Re: [FFmpeg-user] What is Segmentation fault: 11 ?

[Carl Eugen Hoyos]

2016-08-23 6:29 GMT+02:00 Francois Visagie :
> In that case, compare results with the official
> http://ffmpeg.org/download.html.

(Unrelated:)
The binaries linked there are not official (on the contrary).
Testing them if we cannot reproduce still makes sense.

Carl Eugen
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Re: [FFmpeg-user] Piping output of ffmpeg into ffmbc

[Erik Dobberkau]

2016-08-22 23:39 GMT+02:00 Keith Reilly :

> On Sat, Aug 20, 2016 at 7:41 AM, Erik Dobberkau 
> wrote:
>
> > 2016-08-19 22:43 GMT+02:00 Keith Reilly :
> >
> > > wrote:
> > >
> > > > > > 2016-08-18 23:23 GMT+02:00 Paul B Mahol :
> > > > > >
> > > > > > > On 8/18/16, Keith Reilly  wrote:
> > > > > > > > I use ffmbc to create Avid supported files for fast import
> > > (ffmpeg
> > > > > > > doesn't
> > > > > > > > do this). ffmbc is behind in development so there are codecs
> it
> > > > > cannot
> > > > > > > read
> > > > > > > > that i need it to. My solution is to simply read the file
> with
> > > > ffmpeg
> > > > > > and
> > > > > > > > pass it on to ffmbc via standard output that way i can make
> > Avid
> > > > > media
> > > > > > > with
> > > > > > > > anything ffmpeg reads. However i have an issue. I do not get
> > the
> > > > > whole
> > > > > > > > video converted.
> > > > > > > >
> > > > > > > >  I'm running on Mac os 10.11.6 ffmpeg was installed with
> > > macports,
> > > > > > ffmbc
> > > > > > > > from source. The video is about 1 hour 27 min long, i get
> > > roughly 5
> > > > > > > minutes
> > > > > > > > of the imx50 file that is perfect except for the missing hour
> > and
> > > > > > 22min.
> > > > > > > >
> > > > > > > > console input:
> > > > > > > > ffmpeg -i _Youtube.webm -c:v rawvideo -c:a pcm_s16le -f avi
> > > pipe:1
> > > > |
> > > > > > > ffmbc
> > > > > > > > -i pipe:0 -r 29.97 -target imx50 _Youtube.mxf
> > > > > > > >
> > > > > > > > output:
> > > > > > > >
> > > > > > > > ffmpeg version 3.1.1 Copyright (c) 2000-2016 the FFmpeg
> > > developers
> > > > > > > >
> > > > > > > >   built with Apple LLVM version 7.3.0 (clang-703.0.31)
> > > > > > > >
> > > > > > > >   configuration: --prefix=/opt/local --enable-swscale
> > > > > --enable-avfilter
> > > > > > > > --enable-avresample --enable-libmp3lame --enable-libvorbis
> > > > > > > --enable-libopus
> > > > > > > > --enable-libtheora --enable-libschroedinger
> > --enable-libopenjpeg
> > > > > > > > --enable-libmodplug --enable-libvpx --enable-libsoxr
> > > > > --enable-libspeex
> > > > > > > > --enable-libass --enable-libbluray --enable-lzma
> > --enable-gnutls
> > > > > > > > --enable-fontconfig --enable-libfreetype --enable-libfribidi
> > > > > > > > --disable-indev=jack --disable-outdev=xv
> > > > > --mandir=/opt/local/share/man
> > > > > > > > --enable-shared --enable-pthreads --cc=/usr/bin/clang
> > > --enable-vda
> > > > > > > > --enable-audiotoolbox --enable-videotoolbox --arch=x86_64
> > > > > --enable-yasm
> > > > > > > > --enable-gpl --enable-postproc --enable-libx264
> > --enable-libxvid
> > > > > > > >
> > > > > > > >   libavutil  55. 28.100 / 55. 28.100
> > > > > > > >
> > > > > > > >   libavcodec 57. 48.101 / 57. 48.101
> > > > > > > >
> > > > > > > >   libavformat57. 41.100 / 57. 41.100
> > > > > > > >
> > > > > > > >   libavdevice57.  0.101 / 57.  0.101
> > > > > > > >
> > > > > > > >   libavfilter 6. 47.100 /  6. 47.100
> > > > > > > >
> > > > > > > >   libavresample   3.  0.  0 /  3.  0.  0
> > > > > > > >
> > > > > > > >   libswscale  4.  1.100 /  4.  1.100
> > > > > > > >
> > > > > > > >   libswresample   2.  1.100 /  2.  1.100
> > > > > > > >
> > > > > > > >   libpostproc54.  0.100 / 54.  0.100
> > > > > > > >
> > > > > > > > FFmbc version 0.7.4
> > > > > > > >
> > > > > > > > Copyright (c) 2008-2015 Baptiste Coudurier and the FFmpeg
> > > > developers
> > > > > > > >
> > > > > > > > Input #0, matroska,webm, from '/Volumes/RR295-KENNEDY_1/_
> > > > > > Youtube.webm':
> > > > > > > >
> > > > > > > >   Metadata:
> > > > > > > >
> > > > > > > > encoder : Lavf56.1.0
> > > > > > > >
> > > > > > > >   Duration: 01:27:33.64, start: 0.00, bitrate: 480 kb/s
> > > > > > > >
> > > > > > > > Stream #0:0(eng): Video: vp9 (Profile 0), yuv420p(tv),
> > > 640x480,
> > > > > SAR
> > > > > > > 1:1
> > > > > > > > DAR 4:3, 29.97 fps, 29.97 tbr, 1k tbn, 1k tbc (default)
> > > > > > > >
> > > > > > > > Stream #0:1(eng): Audio: vorbis, 44100 Hz, stereo, fltp
> > > > (default)
> > > > > > > >
> > > > > > > > [avi @ 0x7fcd6c83f000] Using AVStream.codec to pass codec
> > > > parameters
> > > > > to
> > > > > > > > muxers is deprecated, use AVStream.codecpar instead.
> > > > > > > >
> > > > > > > > Last message repeated 1 times
> > > > > > > >
> > > > > > > > Output #0, avi, to 'pipe:1':
> > > > > > > >
> > > > > > > >   Metadata:
> > > > > > > >
> > > > > > > > ISFT: Lavf57.41.100
> > > > > > > >
> > > > > > > > Stream #0:0(eng): Video: rawvideo (I420 / 0x30323449),
> > > yuv420p,
> > > > > > > 640x480
> > > > > > > > [SAR 1:1 DAR 4:3], q=2-31, 200 kb/s, 29.97 fps, 29.97 tbn,
> > 29.97
> > > > tbc
> > > > > > > > (default)
> > > > > > > >
> > > > > > > > Metadata:
> > > > > > > >
> > > > > > > >   encoder : Lavc57.48.101 rawvideo
> > > > > > > >
> > > > > > > > Stream #0:1(eng): Audio: pcm_s16le ([1][0][0][0] /
> 0x0001),
> > > > 44100
> > > > > 

[FFmpeg-user] HELP !

[Nicolas Sampson]

Greetings to one and all!!!

I am not a programmer but I had to use FFMPEG due to the fact that a lot of
TV Episodes and Documentaries are coded with the HEVC x265 codec, and my
equipment is not to read said files.  I have looked at a number of examples
to try and come up with a 'formula' that satisfies me.

What I am trying to do is: be able to copy a number of files into a folder
and have Ffmpeg convert the first, then loop to the second, etc. etc. and
obviously stop at the last one in the loop.  Is this possible, and how?

This is the current formula I use and I would like to add the loop into it:

ffmpeg -i "xxx.zzz" -c:v lib264 -framerate 25 -crf 21 -c:a libmp3lame -b:a
190k -b:v 3000k -filter:a "volume=2" "xxx.zzz"

(I am hard of hearing, that is why I doubled the volume)

Is this formula set out correctly? Should the variables be re-arranged from
the order they are in?  Is there anything else I should add to make it
better?

I would greatly appreciate any help and assistance you can render.

Regards,

*​Otto van Dyke.*
*If you intend to forward this message, PLEASE delete my address and/or
details.*
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Re: [FFmpeg-user] HELP !

[Kieran O Leary]

Hi Nicolas,

On Tue, Aug 23, 2016 at 10:37 AM, Nicolas Sampson  wrote:
> Greetings to one and all!!!
>

>
> What I am trying to do is: be able to copy a number of files into a folder
> and have Ffmpeg convert the first, then loop to the second, etc. etc. and
> obviously stop at the last one in the loop.  Is this possible, and how?
>

This is possible. If you don't want to get into scripting, you should
be able to run this in your terminal as a one liner. Which operating
system do you use and are all your h265 files in the same kind of
container?

> This is the current formula I use and I would like to add the loop into it:
>
> ffmpeg -i "xxx.zzz" -c:v lib264 -framerate 25 -crf 21 -c:a libmp3lame -b:a
> 190k -b:v 3000k -filter:a "volume=2" "xxx.zzz"
>

Do you need to have -framerate 25 in there? What is the source fps?

Best,

Kieran.
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Re: [FFmpeg-user] HELP !

[Peter van Houten]

On 23/08/2016 09:37, Nicolas Sampson wrote:
> Greetings to one and all!!!
> 
> I am not a programmer but I had to use FFMPEG due to the fact that a lot of
> TV Episodes and Documentaries are coded with the HEVC x265 codec, and my
> equipment is not to read said files.  I have looked at a number of examples
> to try and come up with a 'formula' that satisfies me.
> 
> What I am trying to do is: be able to copy a number of files into a folder
> and have Ffmpeg convert the first, then loop to the second, etc. etc. and
> obviously stop at the last one in the loop.  Is this possible, and how?
> 
> This is the current formula I use and I would like to add the loop into it:
> 
> ffmpeg -i "xxx.zzz" -c:v lib264 -framerate 25 -crf 21 -c:a libmp3lame -b:a
> 190k -b:v 3000k -filter:a "volume=2" "xxx.zzz"
> 
> (I am hard of hearing, that is why I doubled the volume)
> 
> Is this formula set out correctly? Should the variables be re-arranged from
> the order they are in?  Is there anything else I should add to make it
> better?
> 
> I would greatly appreciate any help and assistance you can render.
> 
> Regards,
> 
> *​Otto van Dyke.*
> *If you intend to forward this message, PLEASE delete my address and/or
> details.*


This should help you get started. You haven't mentioned your input
container but as your input codec is x265, the container is probably mp4
so change if necessary. There is a typo in your "lib264", it should be
libx264 and I've re-positioned the video bitrate logically:

for f in *.mp4; do ffmpeg -i $f -c:v libx264 -b:v 3000k -framerate 25
-crf 21 -c:a libmp3lame -b:a 190k -filter:a "volume=2" -y
/new_directory/${f%.mp4}.mp4; done

--
Peter van Houten
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Re: [FFmpeg-user] FFMPEG build issue arm-linux-androideabi-gcc is unable to create an executable file. C compiler test failed.

[Maroti Mulange]

Hi,
I have tried the above code on my terminal he gives me "No such file or
directory" error.
and when I tried below code
mindbowser@ubuntu:~/FFMPEG/android-ndk-r12b/ffmpeg-3.1.2$ ./configure
--cross-prefix=./FFMPEG/android-ndk-r12b/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-
--arch=arm --target-os=android
--sysroot=./FFMPEG/android-ndk-r12b/platforms/android-24/arch-arm
--cpu=cortex-a8

 give me following error.
./FFMPEG/android-ndk-r12b/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc
is unable to create an executable file.
C compiler test failed.

If you think configure made a mistake, make sure you are using the latest
version from Git.  If the latest version fails, report the problem to the
ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
Include the log file "config.log" produced by configure as this will help
solve the problem.

My Directory structure in the following way.
FFMPEG/android-ndk-r12b/ffmpeg-3.1.2
FFMPEG/android-ndk-r12b/ndk-build and condigure file is
FFMPEG/android-ndk-r12b/ffmpeg-3.1.2/configure



On Wed, Aug 17, 2016 at 7:11 PM, Carl Eugen Hoyos 
wrote:

> Hi!
>
> 2016-08-17 15:24 GMT+02:00 Maroti Mulange :
> > or how ffmpeg build smoothly with android?
>
> After putting current FFmpeg and ndk in the same directory I created a
> build directory
> and successfully tested:
> $ ../FFmpeg/configure
> --cross-prefix=../android-ndk-r12b/toolchains/arm-linux-
> androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-
> --arch=arm --target-os=android
> --sysroot=../android-ndk-r12b/platforms/android-24/arch-arm
> --enable-gpl --cpu=cortex-a8 && make ffmpeg
>
> Carl Eugen
> ___
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>
> To unsubscribe, visit link above, or email
> ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
>



-- 
Thanks and regards,
Maroti Mulange
Software Engineer | Mindbowser Info Solutions
Mobile: +91 9130608079
Skype: mm.mindbowser
Website: www.mindbowser.com
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Re: [FFmpeg-user] FFMPEG build issue arm-linux-androideabi-gcc is unable to create an executable file. C compiler test failed.

[Nicolas Sampson]

I am sorry but I just joined, and I am totally confused how the "system"
works.  Are emails distributed to all those who joined?  I don't even know
how to start the program 

Regards,


*Nicolas "Sam" Sampson.*
*If you intend to forward this message, PLEASE delete my address and/or
details.*

On 23 August 2016 at 21:52, Maroti Mulange 
wrote:

> Hi,
> I have tried the above code on my terminal he gives me "No such file or
> directory" error.
> and when I tried below code
> mindbowser@ubuntu:~/FFMPEG/android-ndk-r12b/ffmpeg-3.1.2$ ./configure
> --cross-prefix=./FFMPEG/android-ndk-r12b/toolchains/
> arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-
> --arch=arm --target-os=android
> --sysroot=./FFMPEG/android-ndk-r12b/platforms/android-24/arch-arm
> --cpu=cortex-a8
>
>  give me following error.
> ./FFMPEG/android-ndk-r12b/toolchains/arm-linux-androideabi-4.9/prebuilt/
> linux-x86_64/bin/arm-linux-androideabi-gcc
> is unable to create an executable file.
> C compiler test failed.
>
> If you think configure made a mistake, make sure you are using the latest
> version from Git.  If the latest version fails, report the problem to the
> ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
> Include the log file "config.log" produced by configure as this will help
> solve the problem.
>
> My Directory structure in the following way.
> FFMPEG/android-ndk-r12b/ffmpeg-3.1.2
> FFMPEG/android-ndk-r12b/ndk-build and condigure file is
> FFMPEG/android-ndk-r12b/ffmpeg-3.1.2/configure
>
>
>
> On Wed, Aug 17, 2016 at 7:11 PM, Carl Eugen Hoyos 
> wrote:
>
> > Hi!
> >
> > 2016-08-17 15:24 GMT+02:00 Maroti Mulange  >:
> > > or how ffmpeg build smoothly with android?
> >
> > After putting current FFmpeg and ndk in the same directory I created a
> > build directory
> > and successfully tested:
> > $ ../FFmpeg/configure
> > --cross-prefix=../android-ndk-r12b/toolchains/arm-linux-
> > androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-
> > --arch=arm --target-os=android
> > --sysroot=../android-ndk-r12b/platforms/android-24/arch-arm
> > --enable-gpl --cpu=cortex-a8 && make ffmpeg
> >
> > Carl Eugen
> > ___
> > ffmpeg-user mailing list
> > ffmpeg-user@ffmpeg.org
> > http://ffmpeg.org/mailman/listinfo/ffmpeg-user
> >
> > To unsubscribe, visit link above, or email
> > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
> >
>
>
>
> --
> Thanks and regards,
> Maroti Mulange
> Software Engineer | Mindbowser Info Solutions
> Mobile: +91 9130608079
> Skype: mm.mindbowser
> Website: www.mindbowser.com
> ___
> ffmpeg-user mailing list
> ffmpeg-user@ffmpeg.org
> http://ffmpeg.org/mailman/listinfo/ffmpeg-user
>
> To unsubscribe, visit link above, or email
> ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
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Re: [FFmpeg-user] FFMPEG build issue arm-linux-androideabi-gcc is unable to create an executable file. C compiler test failed.

[Reindl Harald]

Am 23.08.2016 um 13:59 schrieb Nicolas Sampson:

I am sorry but I just joined, and I am totally confused how the "system"
works.  Are emails distributed to all those who joined?


uhm - that's the definition of a mailing-list - how else do you imagine 
others answer your questions and who decides wo get which mails?



On 23 August 2016 at 21:52, Maroti Mulange 
wrote:


Hi,
I have tried the above code on my terminal he gives me "No such file or
directory" error.
and when I tried below code
mindbowser@ubuntu:~/FFMPEG/android-ndk-r12b/ffmpeg-3.1.2$ ./configure
--cross-prefix=./FFMPEG/android-ndk-r12b/toolchains/
arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-
--arch=arm --target-os=android
--sysroot=./FFMPEG/android-ndk-r12b/platforms/android-24/arch-arm
--cpu=cortex-a8

 give me following error.
./FFMPEG/android-ndk-r12b/toolchains/arm-linux-androideabi-4.9/prebuilt/
linux-x86_64/bin/arm-linux-androideabi-gcc
is unable to create an executable file.
C compiler test failed.

If you think configure made a mistake, make sure you are using the latest
version from Git.  If the latest version fails, report the problem to the
ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
Include the log file "config.log" produced by configure as this will help
solve the problem.

My Directory structure in the following way.
FFMPEG/android-ndk-r12b/ffmpeg-3.1.2
FFMPEG/android-ndk-r12b/ndk-build and condigure file is
FFMPEG/android-ndk-r12b/ffmpeg-3.1.2/configure



On Wed, Aug 17, 2016 at 7:11 PM, Carl Eugen Hoyos 
wrote:


Hi!

2016-08-17 15:24 GMT+02:00 Maroti Mulange 
or how ffmpeg build smoothly with android?


After putting current FFmpeg and ndk in the same directory I created a
build directory
and successfully tested:
$ ../FFmpeg/configure
--cross-prefix=../android-ndk-r12b/toolchains/arm-linux-
androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-
--arch=arm --target-os=android
--sysroot=../android-ndk-r12b/platforms/android-24/arch-arm
--enable-gpl --cpu=cortex-a8 && make ffmpeg




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Description: OpenPGP digital signature
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Re: [FFmpeg-user] HELP !

[Nicolas Sampson]

Hello Kieran and thanks for the prompt reply.  I am in Australia, and yes,
our frame rate is 25 fps.  Also I made a spelling error with  it
should have been .

Thanks again and regards,


*Nicolas "Sam" Sampson.*
*If you intend to forward this message, PLEASE delete my address and/or
details.*

On 23 August 2016 at 19:57, Kieran O Leary  wrote:

> Hi Nicolas,
>
> On Tue, Aug 23, 2016 at 10:37 AM, Nicolas Sampson 
> wrote:
> > Greetings to one and all!!!
> >
>
> >
> > What I am trying to do is: be able to copy a number of files into a
> folder
> > and have Ffmpeg convert the first, then loop to the second, etc. etc. and
> > obviously stop at the last one in the loop.  Is this possible, and how?
> >
>
> This is possible. If you don't want to get into scripting, you should
> be able to run this in your terminal as a one liner. Which operating
> system do you use and are all your h265 files in the same kind of
> container?
>
> > This is the current formula I use and I would like to add the loop into
> it:
> >
> > ffmpeg -i "xxx.zzz" -c:v lib264 -framerate 25 -crf 21 -c:a libmp3lame
> -b:a
> > 190k -b:v 3000k -filter:a "volume=2" "xxx.zzz"
> >
>
> Do you need to have -framerate 25 in there? What is the source fps?
>
> Best,
>
> Kieran.
> ___
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Re: [FFmpeg-user] HELP !

[Nicolas Sampson]

Hello Peter and thank you for the immediate reply.  Yes, that spelling
error was picked up after I sent the email.  As I stated when I joined
about 1 hour ago, I am not a programmer, so I would ask you how to run the
formula you quoted..do I open a cmd window and type the formula in it
or should I save it a a <.bat> and then run it?  Do I copy the formula or
batch file into the  folder?  Sorry but I feel stupid asking
these questions !!!  Also is the formula set out in one line, and is there
a 'space' after <-y>

Thanks again and sorry for the trouble.

Regards,



*Nicolas "Sam" Sampson.*
*If you intend to forward this message, PLEASE delete my address and/or
details.*

On 23 August 2016 at 23:39, Peter van Houten  wrote:

> On 23/08/2016 09:37, Nicolas Sampson wrote:
> > Greetings to one and all!!!
> >
> > I am not a programmer but I had to use FFMPEG due to the fact that a lot
> of
> > TV Episodes and Documentaries are coded with the HEVC x265 codec, and my
> > equipment is not to read said files.  I have looked at a number of
> examples
> > to try and come up with a 'formula' that satisfies me.
> >
> > What I am trying to do is: be able to copy a number of files into a
> folder
> > and have Ffmpeg convert the first, then loop to the second, etc. etc. and
> > obviously stop at the last one in the loop.  Is this possible, and how?
> >
> > This is the current formula I use and I would like to add the loop into
> it:
> >
> > ffmpeg -i "xxx.zzz" -c:v lib264 -framerate 25 -crf 21 -c:a libmp3lame
> -b:a
> > 190k -b:v 3000k -filter:a "volume=2" "xxx.zzz"
> >
> > (I am hard of hearing, that is why I doubled the volume)
> >
> > Is this formula set out correctly? Should the variables be re-arranged
> from
> > the order they are in?  Is there anything else I should add to make it
> > better?
> >
> > I would greatly appreciate any help and assistance you can render.
> >
> > Regards,
> >
> > *​Otto van Dyke.*
> > *If you intend to forward this message, PLEASE delete my address and/or
> > details.*
>
>
> This should help you get started. You haven't mentioned your input
> container but as your input codec is x265, the container is probably mp4
> so change if necessary. There is a typo in your "lib264", it should be
> libx264 and I've re-positioned the video bitrate logically:
>
> for f in *.mp4; do ffmpeg -i $f -c:v libx264 -b:v 3000k -framerate 25
> -crf 21 -c:a libmp3lame -b:a 190k -filter:a "volume=2" -y
> /new_directory/${f%.mp4}.mp4; done
>
> --
> Peter van Houten
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Re: [FFmpeg-user] HELP !

[Peter van Houten]

On 23/08/2016 12:24, Nicolas Sampson wrote:
> Hello Peter and thank you for the immediate reply.  Yes, that spelling
> error was picked up after I sent the email.  As I stated when I joined
> about 1 hour ago, I am not a programmer, so I would ask you how to run the
> formula you quoted..do I open a cmd window and type the formula in it
> or should I save it a a <.bat> and then run it?  Do I copy the formula or
> batch file into the  folder?  Sorry but I feel stupid asking
> these questions !!!  Also is the formula set out in one line, and is there
> a 'space' after <-y>
> 
> Thanks again and sorry for the trouble.
> 
> Regards,
> *Nicolas "Sam" Sampson.*
> *If you intend to forward this message, PLEASE delete my address and/or
> details.*


Sorry, can't help if you're using Windows, those commands were for a
Linux shell. Maybe someone else on the list knows the equivalent Windows
commands? The solution I gave is all on one line and yes, there is a
space after the "-y"

--
Peter van Houten


> On 23 August 2016 at 23:39, Peter van Houten  wrote:
> 
>> On 23/08/2016 09:37, Nicolas Sampson wrote:
>>> Greetings to one and all!!!
>>>
>>> I am not a programmer but I had to use FFMPEG due to the fact that a lot
>> of
>>> TV Episodes and Documentaries are coded with the HEVC x265 codec, and my
>>> equipment is not to read said files.  I have looked at a number of
>> examples
>>> to try and come up with a 'formula' that satisfies me.
>>>
>>> What I am trying to do is: be able to copy a number of files into a
>> folder
>>> and have Ffmpeg convert the first, then loop to the second, etc. etc. and
>>> obviously stop at the last one in the loop.  Is this possible, and how?
>>>
>>> This is the current formula I use and I would like to add the loop into
>> it:
>>>
>>> ffmpeg -i "xxx.zzz" -c:v lib264 -framerate 25 -crf 21 -c:a libmp3lame
>> -b:a
>>> 190k -b:v 3000k -filter:a "volume=2" "xxx.zzz"
>>>
>>> (I am hard of hearing, that is why I doubled the volume)
>>>
>>> Is this formula set out correctly? Should the variables be re-arranged
>> from
>>> the order they are in?  Is there anything else I should add to make it
>>> better?
>>>
>>> I would greatly appreciate any help and assistance you can render.
>>>
>>> Regards,
>>>
>>> *​Otto van Dyke.*
>>> *If you intend to forward this message, PLEASE delete my address and/or
>>> details.*
>>
>>
>> This should help you get started. You haven't mentioned your input
>> container but as your input codec is x265, the container is probably mp4
>> so change if necessary. There is a typo in your "lib264", it should be
>> libx264 and I've re-positioned the video bitrate logically:
>>
>> for f in *.mp4; do ffmpeg -i $f -c:v libx264 -b:v 3000k -framerate 25
>> -crf 21 -c:a libmp3lame -b:a 190k -filter:a "volume=2" -y
>> /new_directory/${f%.mp4}.mp4; done
>>
>> --
>> Peter van Houten
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Re: [FFmpeg-user] HELP !

[Carl Eugen Hoyos]

Hi!

2016-08-23 11:37 GMT+02:00 Nicolas Sampson :
> This is the current formula I use and I would like to add the loop into it:

As you found out, the problem is that the "loop" only depends on
your shell (and in no way on FFmpeg).

> ffmpeg -i "xxx.zzz" -c:v lib264 -framerate 25 -crf 21 -c:a libmp3lame
> -b:a 190k -b:v 3000k -filter:a "volume=2" "xxx.zzz"

Note that the output file name absolutely has to be different from
the input file name (it is not in your example) and that you should
avoid using framerate unless you absolutely want frames dropped
or duplicated.

Please find out what top-posting means and avoid it here, Carl Eugen
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Re: [FFmpeg-user] HELP !

[Kieran O Leary]

Hi,

On Tue, Aug 23, 2016 at 3:50 PM, Peter van Houten  wrote:

>
> Sorry, can't help if you're using Windows, those commands were for a
> Linux shell. Maybe someone else on the list knows the equivalent Windows
> commands? The solution I gave is all on one line and yes, there is a
> space after the "-y"
>

This doesn't create a new dir as I'm more familiar with python and
bash, but this should work in windows:

https://gist.github.com/kieranjol/55fdfc00be006c78eae8a30b82f03d7f
for %%a in ("*.mp4") do ffmpeg -i %%a -c:v libx264 -b:v 3000k -crf 21
-c:a libmp3lame -b:a 190k -filter:a "volume=2" -y %%a_transcoded.mp4

Save that .bat to whatever folder contains your video files. Double
click it and it should transcode all of them. This mailing-list isn't
usually for troubleshooting batch scripts, but hopefully we can get
this working for you. I removed -framerate 25 as ffmpeg will choose
the same fps as your source.

Best,

Kieran.
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Re: [FFmpeg-user] FFMPEG build issue arm-linux-androideabi-gcc is unable to create an executable file. C compiler test failed.

[Carl Eugen Hoyos]

Hi!

2016-08-23 13:52 GMT+02:00 Maroti Mulange :
> My Directory structure in the following way.
> FFMPEG/android-ndk-r12b/ffmpeg-3.1.2
> FFMPEG/android-ndk-r12b/ndk-build and condigure file is
> FFMPEG/android-ndk-r12b/ffmpeg-3.1.2/configure

Please test the following:
$ mkdir FFMPEG
$ cd FFMPEG
$ wget http://ffmpeg.org/releases/ffmpeg-snapshot.tar.bz2
$ tar xf ffmpeg-snapshot.tar.bz2
$ wget http://dl.google.com/android/repository/android-ndk-r12b-linux-x86_64.zip
$ unzip android-ndk-r12b-linux-x86_64.zip
$ mkdir build
$ cd build
$ ../ffmpeg/configure
--cross-prefix=../android-ndk-r12b/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-
--arch=arm --target-os=android
--sysroot=../android-ndk-r12b/platforms/android-24/arch-arm
--enable-gpl --cpu=cortex-a8 && make ffmpeg

Please avoid top-posting here, Carl Eugen
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Re: [FFmpeg-user] HELP !

[pkv.stream]

Hi Nicolas,
since you seem to be using a windows platform I would suggest that 
instead of using ffmpeg and batch commands which seem a bit remote for 
you given your background , you turn to more user-friendly solutions 
like Handbrake where you can batch encode.

https://handbrake.fr/
google gave me this tutorial for isntance
http://www.howtogeek.com/13/converting-videos-by-the-batch-with-handbrake/

You have presets which you can select to suit the destination you want 
(a smartphone ?)


The h.264 encoder used is x264 as in ffmpeg.
 best

Le 23/08/2016 à 4:50 PM, Peter van Houten a écrit :

On 23/08/2016 12:24, Nicolas Sampson wrote:

Hello Peter and thank you for the immediate reply.  Yes, that spelling
error was picked up after I sent the email.  As I stated when I joined
about 1 hour ago, I am not a programmer, so I would ask you how to run the
formula you quoted..do I open a cmd window and type the formula in it
or should I save it a a <.bat> and then run it?  Do I copy the formula or
batch file into the  folder?  Sorry but I feel stupid asking
these questions !!!  Also is the formula set out in one line, and is there
a 'space' after <-y>

Thanks again and sorry for the trouble.

Regards,
*Nicolas "Sam" Sampson.*
*If you intend to forward this message, PLEASE delete my address and/or
details.*


Sorry, can't help if you're using Windows, those commands were for a
Linux shell. Maybe someone else on the list knows the equivalent Windows
commands? The solution I gave is all on one line and yes, there is a
space after the "-y"

--
Peter van Houten



On 23 August 2016 at 23:39, Peter van Houten  wrote:


On 23/08/2016 09:37, Nicolas Sampson wrote:

Greetings to one and all!!!

I am not a programmer but I had to use FFMPEG due to the fact that a lot

of

TV Episodes and Documentaries are coded with the HEVC x265 codec, and my
equipment is not to read said files.  I have looked at a number of

examples

to try and come up with a 'formula' that satisfies me.

What I am trying to do is: be able to copy a number of files into a

folder

and have Ffmpeg convert the first, then loop to the second, etc. etc. and
obviously stop at the last one in the loop.  Is this possible, and how?

This is the current formula I use and I would like to add the loop into

it:

ffmpeg -i "xxx.zzz" -c:v lib264 -framerate 25 -crf 21 -c:a libmp3lame

-b:a

190k -b:v 3000k -filter:a "volume=2" "xxx.zzz"

(I am hard of hearing, that is why I doubled the volume)

Is this formula set out correctly? Should the variables be re-arranged

from

the order they are in?  Is there anything else I should add to make it
better?

I would greatly appreciate any help and assistance you can render.

Regards,

*​Otto van Dyke.*
*If you intend to forward this message, PLEASE delete my address and/or
details.*


This should help you get started. You haven't mentioned your input
container but as your input codec is x265, the container is probably mp4
so change if necessary. There is a typo in your "lib264", it should be
libx264 and I've re-positioned the video bitrate logically:

for f in *.mp4; do ffmpeg -i $f -c:v libx264 -b:v 3000k -framerate 25
-crf 21 -c:a libmp3lame -b:a 190k -filter:a "volume=2" -y
/new_directory/${f%.mp4}.mp4; done

--
Peter van Houten

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Re: [FFmpeg-user] HELP !

[Carl Eugen Hoyos]

2016-08-23 15:19 GMT+02:00 pkv.stream :
> Hi Nicolas,
> since you seem to be using a windows platform I would suggest that instead
> of using ffmpeg and batch commands which seem a bit remote for you given
> your background , you turn to more user-friendly solutions like Handbrake
> where you can batch encode.

The disadvantage (on Windows) is of course that you get a very old
libavcodec with many known bugs that are not reproducible with FFmpeg.

Please do not top-post here, Carl Eugen
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Re: [FFmpeg-user] HELP !

[Kieran O Leary]

Hi,

On Tue, Aug 23, 2016 at 2:19 PM, pkv.stream  wrote:
> Hi Nicolas,
> since you seem to be using a windows platform I would suggest that instead
> of using ffmpeg and batch commands which seem a bit remote for you given
> your background , you turn to more user-friendly solutions like Handbrake
> where you can batch encode.

While I agree that handbrake is more user-friendly, engaging with the
command line and batch scripting is an excellent skill to have, and
opens up the vast array of options within ffmpeg . For example,
Nicolas is hard of hearing and requires volume adjustment. I'm not
sure if this is readily available in handbreak, but it's an option
that he can add in to his batch scripts.
Also please do not top post here.

Best,

Kieran.
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Re: [FFmpeg-user] HELP !

[pkv.stream]

Le 23/08/2016 à 3:32 PM, Kieran O Leary a écrit :

Hi,

On Tue, Aug 23, 2016 at 2:19 PM, pkv.stream  wrote:

Hi Nicolas,
since you seem to be using a windows platform I would suggest that instead
of using ffmpeg and batch commands which seem a bit remote for you given
your background , you turn to more user-friendly solutions like Handbrake
where you can batch encode.

While I agree that handbrake is more user-friendly, engaging with the
command line and batch scripting is an excellent skill to have, and
opens up the vast array of options within ffmpeg . For example,
Nicolas is hard of hearing and requires volume adjustment.

overlooked that requirement, good point

  I'm not
sure if this is readily available in handbreak, but it's an option
that he can add in to his batch scripts.
Also please do not top post here.
ps: I thought that top-posting was kind of hijacking a thread with your 
own issues. But I answered to a post in the thread. Sorry if my answser 
was posted in a wrong manner. If you can clarify the proper way, much 
thanks.



Best,

Kieran.
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Re: [FFmpeg-user] HELP !

[pkv.stream]

got my answer
https://en.wikipedia.org/wiki/Posting_style#Top-posting

sorry for top-posting folks
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Re: [FFmpeg-user] HELP !

[Moritz Barsnick]

On Tue, Aug 23, 2016 at 19:37:58 +1000, Nicolas Sampson wrote:

> I am not a programmer but I had to use FFMPEG due to the fact that a

Using a command line tool doesn't really have to do with programming,
but yeah, in a way, it may go beyond what many users have done before.

Anyway: In addition to what the others have written, I would like to
add:

> ffmpeg -i "xxx.zzz" -c:v lib264 -framerate 25 -crf 21 -c:a libmp3lame -b:a
> 190k -b:v 3000k -filter:a "volume=2" "xxx.zzz"
> 
> (I am hard of hearing, that is why I doubled the volume)

Raising the volume of videos which are recorded "too silent" is
certainly a good idea - I do it often, silent videos irritate me - but
cannot be generalized. The tool of choice for changing the volume is
usually your player.

The reason I'm saying this: If the maximum volume of your audio is
already above -3 dB (i.e. "1/2"), multiplying it with your "2" will
cause clipping. Clipping implies heavy distortions, which will make it
even worse for you to comprehend the audio.

What you can do is to analyze the audio track:
$ ffmpeg -i mysample.mkv -vn -filter:a volumedetect -f null -

where the filter will give you something like:
[Parsed_volumedetect_0 @ 0x9f3e5e0] n_samples: 9893888
[Parsed_volumedetect_0 @ 0x9f3e5e0] mean_volume: -26.5 dB
[Parsed_volumedetect_0 @ 0x9f3e5e0] max_volume: -10.2 dB
[Parsed_volumedetect_0 @ 0x9f3e5e0] histogram_10db: 25
[Parsed_volumedetect_0 @ 0x9f3e5e0] histogram_11db: 410
[Parsed_volumedetect_0 @ 0x9f3e5e0] histogram_12db: 2297
[Parsed_volumedetect_0 @ 0x9f3e5e0] histogram_13db: 7834

(The astats filter may or may not be better to parse for automation.)

And you can then compensate that insufficient max volume (no more, no
less) with the volume filter:
$ ffmpeg ... -filter:a volume="+10.2 dB" ...

If that's still too silent in most places, you probably need to use a
dynamic filter such as dynaudnorm[1].

> *Otto van Dyke.*
> *If you intend to forward this message, PLEASE delete my address and/or
> details.*

The list server will not really obey, but publicize instead:
http://ffmpeg.org/pipermail/ffmpeg-user/2016-August/033282.html
Just sayin'.

Welcome to ffmpeg,
cheers,
Moritz

[1] https://ffmpeg.org/ffmpeg-filters.html#dynaudnorm
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Re: [FFmpeg-user] HELP !

[rslovers]

On Tue, Aug 23, 2016 at 07:37:58PM +1000, Nicolas Sampson wrote:
> ffmpeg -i "xxx.zzz" -c:v lib264 -framerate 25 -crf 21 -c:a libmp3lame -b:a
> 190k -b:v 3000k -filter:a "volume=2" "xxx.zzz"

well,  since nobody has mentioned, but aren't -crf and -b:v mutu-
ally exclusive? if you want crf then drop the -b:v switch.
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[FFmpeg-user] Problem with ffmpeg installation

[Chandra Shaker Balure]

Dear sir,

I am facing problem with ffmpeg installation. I have downloaded the ffmpeg
from the website https://www.ffmpeg.org/download.html and tried installing
using ./configure, but it fails, and throws an error, i.e.

If you think configure made a mistake, make sure you are using the latest
version from Git.  If the latest version fails, report the problem to the
ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
Include the log file "config.log" produced by configure as this will help
solve the problem.

I would like to know if have any solution to this. I am not able to figure
out the workaround to resolve this issue.

Thanks and regards,
Chandra Shaker Balure
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Re: [FFmpeg-user] Can't stop recording

[estaker]

spookybathtub wrote
> I'm trying to capture a stream from a webcam, and it says "press [q] to
> stop, [?] for help".  But neither of those keys has any effect.  The only
> way I can get it to stop is by pressing ctrl-C repeatedly, and then it
> gives an error and the output file is not playable.  I'm running ffmpeg in
> Terminal in OS X 10.10.5.  The webcam is a Logitech c920.

Were you able to find a solution to this? 



--
View this message in context: 
http://ffmpeg-users.933282.n4.nabble.com/Can-t-stop-recording-tp4676124p4677189.html
Sent from the FFmpeg-users mailing list archive at Nabble.com.
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Re: [FFmpeg-user] Best way to scale interlaced video

[Erik Dobberkau]

Mark,

thank you for sharing your insight here. Does the same method also apply
for upscaling SD footage to HD?

Erik
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[FFmpeg-user] Compile ffmpeg with scale_npp

[Ramiro Ricoy]

Hi, i follow this guide (https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu) 
to compile ffmpeg and added nvenc support on debian jessie. All ok,  i can use 
h264_nvenc codec but i can use scale_npp filter.

I tried to compile ffmpeg with --enable-filter=scale_cpp and it's compile but 
scale_npp filter do not appears in -filters list.


Any clue about what i missing?



CompilationGuide/Ubuntu - 
FFmpeg
trac.ffmpeg.org
Note: FFmpeg has returned in Ubuntu 15.04 Vivid Vervet. You may still wish to 
compile if you experience a bug or want to customize your build, and it will 
not ...


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Re: [FFmpeg-user] Can't stop recording

[Carl Eugen Hoyos]

Hi!

2016-08-23 5:13 GMT+02:00 estaker :
> spookybathtub wrote
>> I'm trying to capture a stream from a webcam, and it says "press [q] to
>> stop, [?] for help".  But neither of those keys has any effect.  The only
>> way I can get it to stop is by pressing ctrl-C repeatedly, and then it
>> gives an error and the output file is not playable.  I'm running ffmpeg in
>> Terminal in OS X 10.10.5.  The webcam is a Logitech c920.
>
> Were you able to find a solution to this?

Command line and complete, uncut console output missing / the broken
output file should be fixed in current FFmpeg.

Carl Eugen
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Re: [FFmpeg-user] FFMpeg - Centos - Godaddy server

[Carl Eugen Hoyos]

Hi!

2016-08-18 18:08 GMT+02:00  :
> We are trying to install FFmpeg on centos VPS server. while installation
> we have got the "libraries not found error".

Did you install libvorbis?
Do you need libvorbis?

> We have attached the document corresponding to this error.

Unfortunately not;-(
Did you read what is printed on the screenshot?

Carl Eugen
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Re: [FFmpeg-user] Problem with ffmpeg installation

[Nicolas George]

Le duodi 2 fructidor, an CCXXIV, Chandra Shaker Balure a écrit :
> I would like to know if have any solution to this. I am not able to figure
> out the workaround to resolve this issue.

Try reading the paragraph you quoted from configure's output, for starters.

Regards,

-- 
  Nicolas George


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Re: [FFmpeg-user] compiling error

[Carl Eugen Hoyos]

Hi!

2016-08-15 5:51 GMT+02:00 yiqun...@vipl.ict.ac.cn :
> it is very nice of you to help me. the mfx problem puzzles me for a long time

> --enable-decoder=h264_qsv

This has no effect, please remove it.

> --disable-yasm

Please understand that using this option is not ok, yasm is a small stand-alone
binary that you should put into /usr/local/bin before compilation.

> --enable-libmfx

Unfortunately claims to need pkg-config.
If you cannot (or don't want to) use pkg-config, you can pass the following
to configure: --pkg-config=true
But you also have to add the necessary include and link flags (that I do not
know) with --extra-cflags=-I/path/to/libmfx --extra-ldflags=-L/path/to/library

Carl Eugen
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Re: [FFmpeg-user] Compile ffmpeg with scale_npp

[Carl Eugen Hoyos]

Hi!

2016-08-21 4:19 GMT+02:00 Ramiro Ricoy :
> Hi, i follow this guide 
> (https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu) to
> compile ffmpeg and added nvenc support on debian jessie. All ok,  i can use
> h264_nvenc codec but i can use scale_npp filter.

Needs --enable-libnpp and --enable-cuda (does not need
--enable-filter=scale_npp)

Carl Eugen
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Re: [FFmpeg-user] Problem with ffmpeg installation

[Reindl Harald]

Am 18.08.2016 um 07:57 schrieb Chandra Shaker Balure:

Dear sir,

I am facing problem with ffmpeg installation. I have downloaded the ffmpeg
from the website https://www.ffmpeg.org/download.html and tried installing
using ./configure, but it fails, and throws an error, i.e.

If you think configure made a mistake, make sure you are using the latest
version from Git.  If the latest version fails, report the problem to the
ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
Include the log file "config.log" produced by configure as this will help
solve the problem.

I would like to know if have any solution to this. I am not able to figure
out the workaround to resolve this issue


how do you imagine help wehn you ar enot capable to read some lines of 
text - where is the "config.log" or at least relevant parts of it?




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Re: [FFmpeg-user] What is Segmentation fault: 11 ?

[Nomis101 🐝]

Am 23.08.16 um 08:56 schrieb Carl Eugen Hoyos:
> Please test a current snapshot (I don't think we support
> releases on osx) and please test with "./configure && make ffmpeg",
> I cannot reproduce on Linux.
> In case this hasn't been said: Crashes are always important.
OK, I've tested with the version 3.1.2 from http://evermeet.cx/ffmpeg/
and I've build a new own version using "./configure && make ffmpeg".
Both times I did not see the Segmentation fault: 11 issue. So, this has
to do with some of my compile options. What option is most likely to
cause this?
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Re: [FFmpeg-user] What is Segmentation fault: 11 ?

[Carl Eugen Hoyos]

2016-08-23 20:42 GMT+02:00 Nomis101 🐝 :
> Am 23.08.16 um 08:56 schrieb Carl Eugen Hoyos:
>> Please test a current snapshot (I don't think we support
>> releases on osx) and please test with "./configure && make ffmpeg",
>> I cannot reproduce on Linux.
>> In case this hasn't been said: Crashes are always important.
>
> OK, I've tested with the version 3.1.2 from http://evermeet.cx/ffmpeg/

Which as explained there is not supported here.
Please understand that all releases contain more bugs and less features
than current FFmpeg, limited support for releases exist for distributions
(but not osx and Windows).

> and I've build a new own version using "./configure && make ffmpeg".
> Both times I did not see the Segmentation fault: 11 issue. So, this has
> to do with some of my compile options.

> What option is most likely to cause this?

This is what I would like you to tell us so we can find out if there is a
bug that can be fixed within FFmpeg.

Carl Eugen
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Re: [FFmpeg-user] What is Segmentation fault: 11 ?

[Nomis101 🐝]

Am 23.08.16 um 20:49 schrieb Carl Eugen Hoyos:
>> What option is most likely to cause this?
> This is what I would like you to tell us so we can find out if there is a
> bug that can be fixed within FFmpeg.
This will mean I need to do several builds and leave out another of my
options every time. This will take a while...
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Re: [FFmpeg-user] What is Segmentation fault: 11 ?

[Moritz Barsnick]

On Tue, Aug 23, 2016 at 20:49:20 +0200, Carl Eugen Hoyos wrote:
> > What option is most likely to cause this?
> 
> This is what I would like you to tell us so we can find out if there is a
> bug that can be fixed within FFmpeg.

And in order to find out, I suggest the following approach:

You built your ffmpeg yourself, you said, right? If you still have the
build directory (or build the same sources again with the identical
options), you have a binary ffmpeg_g in that directory after your build
finished.

Go into the build directory, and launch your ffmpeg command as:

$ gdb --args ./ffmpeg_g -i foo.mp4

Once you get to the gdb prompt, type "r" (or "run") and press return.
This will run your ffmpeg command within gdb. Hopefully, you get the
same segmentation fault, but gdb catches it. At that point (after gdb
says "Program received signal SIGSEGV, Segmentation fault."), you type
"thread apply all bt full".

Then post the full output (from the launch of gdb to the end of your
output) here please.

Moritz
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Re: [FFmpeg-user] What is Segmentation fault: 11 ?

[Reindl Harald]

Am 23.08.2016 um 20:49 schrieb Carl Eugen Hoyos:

2016-08-23 20:42 GMT+02:00 Nomis101 🐝 :

Am 23.08.16 um 08:56 schrieb Carl Eugen Hoyos:

Please test a current snapshot (I don't think we support
releases on osx) and please test with "./configure && make ffmpeg",
I cannot reproduce on Linux.
In case this hasn't been said: Crashes are always important.


OK, I've tested with the version 3.1.2 from http://evermeet.cx/ffmpeg/


Which as explained there is not supported here.
Please understand that all releases contain more bugs and less features
than current FFmpeg, limited support for releases exist for distributions


BLA

stop to tell the world that ffmpeg is the one and only project on this 
planet where the current snapshot never has bugs and regressions than 
releases just because ffmmpeg developers are perfect and never make 
mistakes - if that wold be true then after ffmpeg 1.0 no uodates would 
have been needed


what you *realy* tell the world is that you *hope* that whatever problem 
someone has is fixed *by luck* in current snapshot while *hope* that it 
does not break other things


that *maybe* will happen becuas eof *luck* but pretend it is that way by 
defintionwas, is and will always be *bullshit*


FACT IS: nobody cares really about releases and versions and hence "try 
the latest snapshot because i don't want to take a look at something 
else" is the daily repeated phrase


NO DMANED - yoftware usually is NOT a daily moving target based on 
"hopefully the issue you see is gone today and other things worked 
yesterday and ar eborken now hopefully het fixed the next day while you 
don't face it now"


STOP SPREAD THIS BULLSHIT BY DEFINITION

you can argue that way if someone comes with a months old arndom bug but 
pretend that only the current snapshot is saint is JUST BULLSHIT - 
common sense man!




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Re: [FFmpeg-user] Piping output of ffmpeg into ffmbc

[Carl Eugen Hoyos]

2016-08-23 9:45 GMT+02:00 Erik Dobberkau :

> With the (as of testing a few days ago) latest ffmpeg Win build (3.0.2)

3.0.2 is six months old.

Please consider cutting your quotes, Carl Eugen
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Re: [FFmpeg-user] What is Segmentation fault: 11 ?

[Carl Eugen Hoyos]

Hi!

2016-08-23 21:20 GMT+02:00 Reindl Harald :

>
>
> Am 23.08.2016 um 20:49 schrieb Carl Eugen Hoyos:
>>
>>
>>

> Please understand that all releases contain more bugs and less features
>> than current FFmpeg, limited support for releases exist for distributions
>>
>
> BLA
>

Please understand that this is (unfortunately!) nowadays a reason to get
banned here.


>
> stop to tell the world that ffmpeg is the one and only project on this
> planet where the

current snapshot never has bugs


This is not what I wrote above and it is not true.

If you want to maintain releases please step forward on the developer
mailing list:
This is an important job and we lack volunteers! Our releases are not
sufficiently
maintained and we do need this help!

Thank you, Carl Eugen
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Re: [FFmpeg-user] What is Segmentation fault: 11 ?

[Carl Eugen Hoyos]

2016-08-23 21:11 GMT+02:00 Moritz Barsnick :
> On Tue, Aug 23, 2016 at 20:49:20 +0200, Carl Eugen Hoyos wrote:
>> > What option is most likely to cause this?
>>
>> This is what I would like you to tell us so we can find out if there is a
>> bug that can be fixed within FFmpeg.
>
> And in order to find out, I suggest the following approach:
>
> You built your ffmpeg yourself, you said, right? If you still have the
> build directory (or build the same sources again with the identical
> options), you have a binary ffmpeg_g in that directory after your build
> finished.
>
> Go into the build directory, and launch your ffmpeg command as:
>
> $ gdb --args ./ffmpeg_g -i foo.mp4
>
> Once you get to the gdb prompt, type "r" (or "run") and press return.
> This will run your ffmpeg command within gdb. Hopefully, you get the
> same segmentation fault, but gdb catches it. At that point (after gdb
> says "Program received signal SIGSEGV, Segmentation fault."), you type
> "thread apply all bt full".
>
> Then post the full output (from the launch of gdb to the end of your
> output) here please.

You are right that this is helpful (and wanted).

It will most likely not answer the question which compilation option
either triggers a bug in FFmpeg or a bug in the compiler though;-(

Carl Eugen
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Re: [FFmpeg-user] What is Segmentation fault: 11 ?

[Carl Eugen Hoyos]

2016-08-23 21:10 GMT+02:00 Nomis101 🐝 :
> Am 23.08.16 um 20:49 schrieb Carl Eugen Hoyos:
>>> What option is most likely to cause this?
>> This is what I would like you to tell us so we can find out if there is a
>> bug that can be fixed within FFmpeg.
> This will mean I need to do several builds and leave out another of my
> options every time. This will take a while...

You start with removing everything between --enable-avisynth and
--enable-openssl and confirm that the crash still happens.
Then you remove --enable-lto (or test with --enable-lto only)
because this is the most time-consuming of your options.

Some of the strange other options you use are probably the culprit
but a bug in lto optimization is always possible.

Carl Eugen
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Re: [FFmpeg-user] Piping output of ffmpeg into ffmbc

[Erik Dobberkau]

> 2016-08-23 9:45 GMT+02:00 Erik Dobberkau  >:
>
> > With the (as of testing a few days ago) latest ffmpeg Win build (3.0.2)
>
> 3.0.2 is six months old.
>
> Please consider cutting your quotes, Carl Eugen
>

Sure.
Last downloaded on Aug 8, 2016 --- whatever this (zeranoe) build's version
no. is...should be 3.1.x I guess.

Erik
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Re: [FFmpeg-user] What is Segmentation fault: 11 ?

[Nomis101 🐝]

Am 23.08.16 um 21:11 schrieb Moritz Barsnick:
> Go into the build directory, and launch your ffmpeg command as:
>
> $ gdb --args ./ffmpeg_g -i foo.mp4
I did this. First, I had to install gdb via Macports, because it gets
not installed anymore with Apple Developer Tools. But I think the output
is not helpful and unrelated:

/$ ggdb --args ./ffmpeg_g -i /Users/Downloads/Test.mp4 //
//GNU gdb (GDB) 7.9.1//
//Copyright (C) 2015 Free Software Foundation, Inc.//
//License GPLv3+: GNU GPL version 3 or later
//
//This is free software: you are free to change and redistribute it.//
//There is NO WARRANTY, to the extent permitted by law.  Type "show
copying"//
//and "show warranty" for details.//
//This GDB was configured as "x86_64-apple-darwin16.0.0".//
//Type "show configuration" for configuration details.//
//For bug reporting instructions, please see://
//.//
//Find the GDB manual and other documentation resources online at://
//.//
//For help, type "help".//
//Type "apropos word" to search for commands related to "word"...//
//Reading symbols from ./ffmpeg_g...//
//warning: `/tmp/lto.o': can't open to read symbols: No such file or
directory.//
//(no debugging symbols found)...done.//
//(gdb) run//
//Starting program: /Volumes/Developer/ffmpeg-3.1.2/ffmpeg_g -i
/Users/polysom/Downloads/Test.mp4//
//Unable to find Mach task port for process-id 691: (os/kern) failure
(0x5).//
// (please check gdb is codesigned - see taskgated(8))//
//(gdb)/




Am 23.08.16 um 21:48 schrieb Carl Eugen Hoyos:
> You start with removing everything between --enable-avisynth and
> --enable-openssl and confirm that the crash still happens.
> Then you remove --enable-lto (or test with --enable-lto only)
> because this is the most time-consuming of your options.
OK, I did lots of different builds now. And the suspicious option is
--enable-lto. I can remove all other options, no difference. But if I
remove --enable-lto, than I do not see the Segmentation fault issue anymore.
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Re: [FFmpeg-user] What is Segmentation fault: 11 ?

[Carl Eugen Hoyos]

Hi!

2016-08-23 23:44 GMT+02:00 Nomis101 🐝 :
> Am 23.08.16 um 21:11 schrieb Moritz Barsnick:
>> Go into the build directory, and launch your ffmpeg command as:
>>
>> $ gdb --args ./ffmpeg_g -i foo.mp4
> I did this. First, I had to install gdb via Macports, because it gets
> not installed anymore with Apple Developer Tools.

It is called lldb now.

[...]

> OK, I did lots of different builds now. And the suspicious option is
> --enable-lto. I can remove all other options, no difference. But if I
> remove --enable-lto, than I do not see the Segmentation fault issue
> anymore.

Did you verify that lto alone triggers the issue?

Thank you, Carl Eugen
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Re: [FFmpeg-user] ffprobe frame rate / time base

[Carl Eugen Hoyos]

2016-08-20 12:08 GMT+02:00 Erik Dobberkau :
> 2016-08-19 10:35 GMT+02:00 Carl Eugen Hoyos :
>> > Am 18.08.2016 um 11:06 schrieb Erik Dobberkau > > It seems for H.264 encoded *interlaced* video the frame rate displayed by
>> > ffprobe -show_streams -i [inputfile]
>> > is still twice the actual frame rate
>>
>> I don't think this is generally correct but please feel free to provide a
>> sample.
>
> please find a test sample at
> https://www.dropbox.com/s/lzb31bw9iymgg8e/H264_1080i.mp4

I believe there is an issue, I opened ticket #5794.

There are at least two reasons why your above assumption is not
generally correct: There are two ways to do interlaced encoding for
h264 (paff and mbaff), the - quality-wise - best h264 encoder only
supports mbaff and the issue you see is most likely paff-related.
I usually see paff-encoded material in mpegts (how did you record
the sample?) and for mpegts, the correct 25fps are shown.

Thank you for the sample, Carl Eugen
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