Re: [FFmpeg-user] In and out-range Scale option able to correct 0-255 video to 0-235?

[tim nicholson]

On 19/05/15 22:06, Carl Eugen Hoyos wrote:
> Christoph Gerstbauer  gmail.com> writes:
> 
>> C:\Windows\System32>ffmpeg -i
>> C:\Users\Administrator\Desktop\big_buck_bunny_ffvhuff.avi -vf
>> "scale=in_range=full:out_range=tv" -vcodec ffvhuff
> 
> It seems to me that the scale filter is so smart 
> that it doesn't scale if the input and output 
> resolution and input and output colourspace 
> are identical.
> 
> Even worse, both the filter and the software 
> scaler are smart enough to skip actual scaling, 
> so fixing the issue in the scale filter is not 
> sufficient...
> 
> I am not 100% sure if this is a bug, but it 
> seems so;-)
> 

This sounds vaguely familiar and istr it only works when going YUV->RGB,
but my memory could be shakey.

> [..]

-- 
Tim.
Key Fingerprint 38CF DB09 3ED0 F607 8B67 6CED 0C0B FC44 8B0B FC83
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[FFmpeg-user] Corrupted output after concat ffmpeg command

[Artem Belov]

Hello,

I'm getting corrupted video file.

I shared archive via google drive.​
 files.zip

​

I was using this commands:

ffmpeg -i google.mp4 -ss 00:00:00 -to 00:00:10 -c:a copy -vf "drawbox= :
x=0 : y=0 : color=invert : t=15"  cut1.mp4;

ffmpeg -i google.mp4 -ss 00:00:10 -c copy cut2.mp4;

ffmpeg -f concat -i mylist.txt  -c copy output.mp4;

+++

mylist.txt

file 'cut1.mp4'
file 'cut2.mp4'

I tried with different files - getting the same output.

Video is playable, but after 10 seconds I'm getting green screen ...

++

ffmpeg -i google.mp4
ffmpeg version 2.6.2 Copyright (c) 2000-2015 the FFmpeg developers
  built with Apple LLVM version 6.1.0 (clang-602.0.49) (based on LLVM
3.6.0svn)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/2.6.2 --enable-shared
--enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables
--enable-avresample --cc=clang --host-cflags= --host-ldflags=
--enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid
--enable-vda
  libavutil  54. 20.100 / 54. 20.100
  libavcodec 56. 26.100 / 56. 26.100
  libavformat56. 25.101 / 56. 25.101
  libavdevice56.  4.100 / 56.  4.100
  libavfilter 5. 11.102 /  5. 11.102
  libavresample   2.  1.  0 /  2.  1.  0
  libswscale  3.  1.101 /  3.  1.101
  libswresample   1.  1.100 /  1.  1.100
  libpostproc53.  3.100 / 53.  3.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7faf29808c00] stream 0, timescale not set
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'google.mp4':
  Metadata:
major_brand : isom
minor_version   : 512
compatible_brands: isomiso2avc1mp41
artist  : Google Developers
album   :
comment : www.mediahuman.com
date: 0
genre   :
title   : Google Drive SDK: Writing your first Drive app in PHP
encoder : Lavf56.4.101
  Duration: 00:25:22.42, start: 0.00, bitrate: 655 kb/s
Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p,
854x480 [SAR 1280:1281 DAR 16:9], 526 kb/s, 30 fps, 30 tbr, 90k tbn, 60 tbc
(default)
Metadata:
  handler_name: VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz,
stereo, fltp, 125 kb/s (default)
Metadata:
  handler_name: SoundHandler
Stream #0:2: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown),
1280x720 [SAR 1:1 DAR 16:9], 90k tbr, 90k tbn, 90k tbc

+++

ffmpeg -i google.mp4 -ss 00:00:00 -to 00:00:10 -c:a copy -vf "drawbox= :
x=0 : y=0 : color=invert : t=15"  cut1.mp4;
ffmpeg version 2.6.2 Copyright (c) 2000-2015 the FFmpeg developers
  built with Apple LLVM version 6.1.0 (clang-602.0.49) (based on LLVM
3.6.0svn)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/2.6.2 --enable-shared
--enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables
--enable-avresample --cc=clang --host-cflags= --host-ldflags=
--enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid
--enable-vda
  libavutil  54. 20.100 / 54. 20.100
  libavcodec 56. 26.100 / 56. 26.100
  libavformat56. 25.101 / 56. 25.101
  libavdevice56.  4.100 / 56.  4.100
  libavfilter 5. 11.102 /  5. 11.102
  libavresample   2.  1.  0 /  2.  1.  0
  libswscale  3.  1.101 /  3.  1.101
  libswresample   1.  1.100 /  1.  1.100
  libpostproc53.  3.100 / 53.  3.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fce09012000] stream 0, timescale not set
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'google.mp4':
  Metadata:
major_brand : isom
minor_version   : 512
compatible_brands: isomiso2avc1mp41
artist  : Google Developers
album   :
comment : www.mediahuman.com
date: 0
genre   :
title   : Google Drive SDK: Writing your first Drive app in PHP
encoder : Lavf56.4.101
  Duration: 00:25:22.42, start: 0.00, bitrate: 655 kb/s
Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p,
854x480 [SAR 1280:1281 DAR 16:9], 526 kb/s, 30 fps, 30 tbr, 90k tbn, 60 tbc
(default)
Metadata:
  handler_name: VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz,
stereo, fltp, 125 kb/s (default)
Metadata:
  handler_name: SoundHandler
Stream #0:2: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown),
1280x720 [SAR 1:1 DAR 16:9], 90k tbr, 90k tbn, 90k tbc
[libx264 @ 0x7fce090fe600] using SAR=1280/1281
[libx264 @ 0x7fce090fe600] using cpu capabilities: MMX2 SSE2Fast SSSE3
SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0x7fce090fe600] profile High, level 3.1
[libx264 @ 0x7fce090fe600] 264 - core 144 r2533 c8a773e - H.264/MPEG-4 AVC
codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options:
cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1
psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1
cqm=0 deadzone=21,11 fast_pskip=1 chr

Re: [FFmpeg-user] Alexa input dpx

[Reto Kromer]

Dave Rice wrote:

>AFAIK ffmpeg only supports linear sampling in dpx. I think
>support for logarithmic dpx would be very helpful. For now
>there's various workarounds with
>filters such as haldclut, see:
>http://trac.ffmpeg.org/ticket/3751.

I agree with Dave, and I second the request. However:

AFAIK there are three flavours of "logarithmic" DPX:

  - "log neg encoding" ("Cineon printing density encoding")
  - "power-law encoding" (also called "gamma encoding» or
"DIT-linear encoding")
  - "quasi-log encoding" ("log RGB encoding")

The most useful approach is in my opinion and for today's
use the quasi-log. Still AFAIK there are many proprietary
variants (e.g. ARRI log, Panalog, Sony-log, REDLOG) that are
badly documented - or not documented at all.

Hope this is correct - and helps! Reto

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[FFmpeg-user] Could ffmpeg add fade effect for watermark picture?

[Nemo]

I means, increase or reduce the watermark transparency.
Thanks a lot.
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[FFmpeg-user] ffplay can fading out be forced?

[Bill Leahy]

I am working on a simple Python GUI which will play sound effects and songs at 
the push of a button. Audio only. On Windows. For use in a theater during live 
performances. 

In general I need to be able to start at some arbitrary location, fade in, play 
some portion, and then at some arbitrary location fade out over some duration. 

For example given a 1 minute sound clip, start at 4 seconds in, fade in to 80% 
volume over 3 seconds, play for 23 seconds and then fade to zero volume in 6 
seconds. 

I believe given all the parameters for that I could use ffmpeg to produce a 
file that could then be played with ffplay. 

(If you have a better idea let me know!) 

But one issue I need to address. During a show it may be necessary to end a 
sound effect early and it should fade out or it will sound awful. Is there a 
way to tell ffplay to immediately fade out a sound? The fade out time could be 
prespecified. 

Thanks! 


Bill Leahy 


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Re: [FFmpeg-user] H264 IP-camera dump causes wrong duration/bitrate

[しらせ けんじ]

Is it possible that your camera actually captures at a lower
framerate at night/in low light condition?


I think framerate is fixed rate.
The probrem is in frame detection.

Talking about the sample, the bitrate at night has bigger than day time 
one.

I think the frame in night doesn't need more bitrate.
That's way I think frame detection has problem.


* http://temp1.shirase.tk/1505151230.mp4
   This file is a sample in day time.
   The duration of this file is 00:01:07.20.
   The bit rate of this file is 3005 kb/s

* http://temp1.shirase.tk/1505152058.mp4
   This file is a sample in night time.
   The duration is 00:00:24.00.
   The bit rate of this file is 5545 kb/s.

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Re: [FFmpeg-user] Alexa input dpx

[Dave Rice]

> On May 20, 2015, at 9:34 AM, lorenzo angeli  
> wrote:
> 
> Cheers Carl,
> here is the complete command with output debug* :
> http://pastebin.com/wn7j6Bsv
> 
> The problem is that the input sequence of dpx has an AlexaV3LogC color
> space, and I'm applying a lut which expect to have that type of color space
> as input.

AFAIK ffmpeg only supports linear sampling in dpx. I think support for 
logarithmic dpx would be very helpful. For now there's various workarounds with 
filters such as haldclut, see: http://trac.ffmpeg.org/ticket/3751.
Dave Rice

> In Nuke (which is the tool I'm using to check the output) on the read node
> I can define what color space is the input. It does assume is cineon (as
> it's dpx), but I can change it to alexa.
> Just wondering if there's any way to do the same with ffmpeg, or if not ,
> what's the alternative way.
> 
> Thanks a bunch.
> L.
> 
> * note there's another input for a first image before the clip, you can
> ignore that.
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[FFmpeg-user] 10 seconds delay from real image to computer

[Daniel Viana]

Well i can sucessfull stream my ip camera trough http using ffserver and
ffmplayer, but when i open the stream i receive the video with a 9 sec
delay, i tryied to search about libtheora configuration and ffserver to
improve this but i failed to find something usefull, here is my conf:

Port 8090
BindAddress 0.0.0.0
MaxHTTPConnections 2000
MaxClients 1000
MaxBandwidth 1000
CustomLog -
#NoDaemon



File /tmp/cam1.ffm
FileMaxSize 200K
ACL allow localhost



Format ogg
Feed cam1.ffm
VideoCodec libtheora
VideoFrameRate 10
VideoBitRate 128
VideoSize 320x240
#AVOptionVideo crf 23
#AVOptionVideo preset medium
#AVOptionVideo global_quality 0
# for more info on crf/preset options, type: x264 --help
AVOptionVideo flags +global_header
NoAudio
Strict -2



i start ffmjpeg with the command:
ffmpeg -i rtsp://:8554//CH001.sdp http://localhost:8090/cam1.ffm

what options should i try to lower this delay? or what can i do?
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Re: [FFmpeg-user] MINGW/MSYS compile ffmpeg, libavcodec module fail to compile?

[Carl Eugen Hoyos]

flywindsc  qq.com> writes:

> LD libavcodec/avcodec-56.dll
> gcc.exe: error: libavcodec/x86/lossles: No such file or directory

Workaround iirc is to use make V=1 ffmpeg.exe 
but I suspect you have to upgrade to MSYS2.

Carl Eugen

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[FFmpeg-user] MINGW/MSYS compile ffmpeg, libavcodec module fail to compile?

[flywindsc]

hi all, recently I got trouble when compling ffmpeg in mingw/msys
environment.
any advice, very appreciate!!

I have gcc version: 4.8.1 ;ffmpeg version: 2.6.2
(I try to compile x264, everything ok, I think that mingw/msys
compile'environment
is ok basicly)

but compile ffmpeg, step like:
$./configure --enable-shared --disable-static --enable-memalign-hack
configure ok.

$make
 
everytime I got same errors like below:

LD libavcodec/avcodec-56.dll
gcc.exe: error: libavcodec/x86/lossles: No such file or directory
library.mak:110: recipe for target 'libavcodec/avcodec-56.dll' failed
make: ***[libavcodec/avcodec-56.dll] Error 1

I couldn't find any useful information when google. I download another
newest ffmpeg, it still gots same error but:

LD libavcodec/avcodec-56.dll
gcc.exe: error: libavcodec/x86/huffy: No such file or directory
library.mak:110: recipe for target 'libavcodec/avcodec-56.dll' failed
make: ***[libavcodec/avcodec-56.dll] Error 1

in src directory, I couldn;t find anything about lossles or huffy, but
have lossless_videodsp_init.c/lossless_audiodsp_init.c/huffyuvdsp_init.c...

did I miss something? anyone can give me handle what should do?
thanks a lot.



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Re: [FFmpeg-user] HD > SD Down-Convert Prores Color

[Kevin Wells]

> To: ffmpeg-user@ffmpeg.org
> From: ceho...@ag.or.at
> Date: Wed, 20 May 2015 14:58:19 +
> Subject: Re: [FFmpeg-user] HD> SD Down-Convert Prores Color
>
> Kevin Wells  hotmail.co.uk> writes:
>
>> the out.mov is still flagged as bt709, but needs to be bt601.
>
> Do you have a file (any file) that is flagged as bt601?
> If not, how do you know that it is possible to flag the
> file as bt601 (I also believe it is possible but I will
> only be able to help you if I at least see ffmpeg -i
> output for such a sample)?
>
> Carl Eugen
>
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Sorry Carl, I misunderstood. Here is the output of a PAL SD file:


ffmpeg -i Bars_100_SD.mov 
ffmpeg version 2.6.git Copyright (c) 2000-2015 the FFmpeg developers
  built with Apple LLVM version 6.1.0 (clang-602.0.49) (based on LLVM 3.6.0svn)
  configuration: --prefix=/Volumes/tempdisk/sw --enable-gpl --enable-pthreads 
--disable-ffplay --disable-ffserver --enable-libvpx --disable-decoder=libvpx 
--enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 
--enable-libxvid --enable-avfilter --enable-zlib --enable-filters --arch=x86 
--enable-runtime-cpudetect
  libavutil      54. 23.101 / 54. 23.101
  libavcodec     56. 38.100 / 56. 38.100
  libavformat    56. 32.100 / 56. 32.100
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 16.101 /  5. 16.101
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  1.100 /  1.  1.100
  libpostproc    53.  3.100 / 53.  3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Bars_100_SD.mov':
  Metadata:
    major_brand     : qt  
    minor_version   : 537199360
    compatible_brands: qt  
    creation_time   : 2015-05-15 16:49:46
  Duration: 00:00:03.56, start: 0.00, bitrate: 9649 kb/s
    Stream #0:0(eng): Video: prores (apch / 0x68637061), 
yuv422p10le(bt470bg/smpte170m/unknown), 720x576, 9622 kb/s, 25 fps, 25 tbr, 
2500 tbn, 2500 tbc (default)
    Metadata:
      creation_time   : 2015-05-15 16:49:50
      handler_name    : Apple Alias Data Handler
      encoder         : Apple ProRes 422 HQ
      timecode        : 00:00:00:00
    Stream #0:1(eng): Data: none (tmcd / 0x64636D74), 0 kb/s
    Metadata:
      creation_time   : 2015-05-15 16:49:50
      handler_name    : Apple Alias Data Handler
      reel_name       : 89202
      timecode        : 00:00:00:00
At least one output file must be specified  
  
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[FFmpeg-user] RTCP RR when streaming RTP over RTSP/TCP

[Ralf Globisch]

Hi, 


I'm just looking to confirm whether or not ffmpeg sends RTCP RRs when streaming 
over TCP (RTP over RTSP/TCP). 
Sniffing the traffic seems to indicate that ffmpeg does not send them. 


If not, are there any plans to add such functionality?


Thanks!
Ralf




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Re: [FFmpeg-user] HD > SD Down-Convert Prores Color

[Carl Eugen Hoyos]

Kevin Wells  hotmail.co.uk> writes:

> the out.mov is still flagged as bt709, but needs to be bt601.

Do you have a file (any file) that is flagged as bt601?
If not, how do you know that it is possible to flag the 
file as bt601 (I also believe it is possible but I will 
only be able to help you if I at least see ffmpeg -i 
output for such a sample)?

Carl Eugen

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Re: [FFmpeg-user] HD > SD Down-Convert Prores Color

[Kevin Wells]

> To: ffmpeg-user@ffmpeg.org
> From: ceho...@ag.or.at
> Date: Wed, 20 May 2015 13:05:23 +
> Subject: Re: [FFmpeg-user] HD> SD Down-Convert Prores Color
>
> Kevin Wells  hotmail.co.uk> writes:
>
>> Hi Carl, what should I change to make the output bt601?
>
> Please provide such a bt601 sample (including ffmpeg -i
> output for the sample).
>
> Carl Eugen
>
>>
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Hi Carl, I think you misunderstand. We have the HD file (bt709) which is the 
HD_BARS.mov, sample and readout log already provided, which I want to goto 
SD_BARS.mov (bt601). The last line of code you provided was almost perfect, log 
readout already provided:

ffmpeg -i HD_BARS.mov -s pal -vcodec prores -an -movflags +write_colr -an -s 
pal -color_primaries bt709 -color_trc bt709 -colorspace bt709 out.mov

This was great, but the out.mov is still flagged as bt709, but needs to be 
bt601. What would I change in your code to correct this please?

Kind regards. 
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Re: [FFmpeg-user] Alexa input dpx

[lorenzo angeli]

Cheers Carl,
here is the complete command with output debug* :
http://pastebin.com/wn7j6Bsv

The problem is that the input sequence of dpx has an AlexaV3LogC color
space, and I'm applying a lut which expect to have that type of color space
as input.

In Nuke (which is the tool I'm using to check the output) on the read node
I can define what color space is the input. It does assume is cineon (as
it's dpx), but I can change it to alexa.
Just wondering if there's any way to do the same with ffmpeg, or if not ,
what's the alternative way.

Thanks a bunch.
L.

* note there's another input for a first image before the clip, you can
ignore that.
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Re: [FFmpeg-user] HD > SD Down-Convert Prores Color

[Carl Eugen Hoyos]

Kevin Wells  hotmail.co.uk> writes:

> Hi Carl, what should I change to make the output bt601?

Please provide such a bt601 sample (including ffmpeg -i 
output for the sample).

Carl Eugen

> 




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Re: [FFmpeg-user] Alexa input dpx

[Carl Eugen Hoyos]

lorenzo angeli  efestolab.uk> writes:

> No command line here

> If it's not clear

At least to me, it is completely unclear without 
command line and complete, uncut console output.

Carl Eugen

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Re: [FFmpeg-user] HD > SD Down-Convert Prores Color

[Kevin Wells]

> To: ffmpeg-user@ffmpeg.org
> From: ceho...@ag.or.at
> Date: Tue, 19 May 2015 19:44:37 +
> Subject: Re: [FFmpeg-user] HD> SD Down-Convert Prores Color
>
> Kevin Wells  hotmail.co.uk> writes:
>
>> Hi Carl, what should I change to make the output bt601?
>
> Please provide such a sample (including ffmpeg -i output
> for the sample).
>
> Carl Eugen
>
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Hi Carl, I have already supplied this.

Kind regards. 
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[FFmpeg-user] Alexa input dpx

[lorenzo angeli]

Hi All,

No command line here, just an overall question about color management.
I have a sequence of DPX which are supposed to be in ALEXAv3LogC, how can I
tell ffmpeg to use that color space to read the images in ? Or , what color
space ffmpeg assume is by default a sequence of dpx (linear I guess)?

Asking because I have to apply a lut on it , but the outcome doesn't match
the reference quicktime I have. I tried to replicate it in nuke and
changing the input color space to alexa make it come out well.

If it's not clear , let me know and I'll try to expand further.

Thanks a lot.
L.

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