Re: [FFmpeg-user] Option to suppress Overwrite existing file ?

> > is there an option to suppress prompting for Overwrite existing file ? > > Hello "-y" see : https://www.ffmpeg.org/ffmpeg.html#Main-options Martin ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user T

Re: [FFmpeg-user] Detect Frozen video

Le mer. 28 nov. 2018 à 12:46, José María Infanzón a écrit : > Hi All, I'm streaming a live channel and I want to use ffmpeg to monitor > the stream, what I need to check is when the image is frozen. Is there a > way yo achieve this? I've read that I can use blend function, but not sure > how. > >

Re: [FFmpeg-user] Setting colour range.

> > I think prores encoder will soon get color_range writing from prores_ks. Doesn't seems like prores_ks do something about color_range. The color difference between prores_ks and aw, have been fixed, by setting the color prim, trc, space in prores frame header in prores_aw (already in master, p

Re: [FFmpeg-user] HD MXF SMPTE ST377 Standard Compliance Problem with multiple IndexTableSegments carring Unique ID twins (maybe a bug)

Hello, I think this report is interesting. Creating file for broadcast delivery, is not just about having a file which play or doesn't play It's mainly about passing Quality Control. Even if a file can be play in most of software, if it doesn't pass broadcaster QC, it will be reject. In my use i

Re: [FFmpeg-user] How to choose pixfmt output for video generator

Le mar. 9 oct. 2018 à 22:48, Carl Eugen Hoyos a écrit : > 2018-10-09 22:41 GMT+02:00, Martin Vignali : > > Hello, > > > > I would like to use a generator for testing > > Some generator, seems to have several pix fmt supported, but can't find > the > > way

[FFmpeg-user] How to choose pixfmt output for video generator

Hello, I would like to use a generator for testing Some generator, seems to have several pix fmt supported, but can't find the way to choose one For example allyuv seems to support yuv444p, gbrp ./ffmpeg -f lavfi -i allyuv=rate=5:duration=1 -pix_fmt yuv444p -f null - -loglevel debug ==> Output y

Re: [FFmpeg-user] -c:v png

Le lun. 24 sept. 2018 à 10:50, Benoit LELOUTRE a écrit : > Hi, > I try to compress video with alpha. > For this I'm using -c:v png codec. But for technical issue, I want to > limit the bitrate at 100Mb/s. > First I tried with -b:v 100M but not working. > After I tried with -compression_level 50

Re: [FFmpeg-user] FFMpeg Exr Encoder

2018-05-12 9:06 GMT+02:00 Paul B Mahol : > On 5/11/18, Matthew.Alexander - The Empire Post > wrote: > > Hi, > > > > > > I've been trying to use ffmpeg to speed up processes here at work, > however > > it has come to my attention that ffmpeg does not have an encoder for exr, > > all I want to do r

Re: [FFmpeg-user] Hap_q_alpha is it possible?

Hello, 2018-04-22 19:56 GMT+02:00 Alex Ramos : > Hello, > I think I'm missing something. > ffmpeg -i source.mov -vcodec hap -format hap target.mov OK > ffmpeg -i source.mov -vcodec hap -format hap_alpha target.mov OK > ffmpeg -i source.mov -vcodec hap -format hap_q target.mov OK > This is not wor

Re: [FFmpeg-user] Convert images to DNXHD 444

> There is also an image http://elmtreecottages.co.uk/Charts.jpg which > shows a screen example of the difference. (ffmpeg on the left) The > quicktime version is, to me, indistinguishable from the source tiff in > terms of colour. The ffmpeg version is less saturated and a bit "milky". I > have be

Re: [FFmpeg-user] Audio Meter filter

> > > > Is there another filter for that ? > > Only ebur128 meter. > > The peak meter, is just that peak, if you want more dynamics incrase > rate option to 60fps. > Default 25 is very low :) > > I'm not happy with rms option, so if you can improve this and add > others meter that would be great. >

[FFmpeg-user] Audio Meter filter

Hello, I would like to show an audio meter from an audio file (something like what edit software display or like Audacity display) I try the showvolume filter, but the result is not what i would like to have. My command line : "C:\ffmpeg-20180329-af043b8-win64-static\bin\ffmpeg.exe" -i "D:\RefSo

Re: [FFmpeg-user] EXR displayWindow != dataWindow

2017-08-09 0:12 GMT+02:00 sdas : > I'm using ffmpeg on windows, and creating a movie file from a series of > uncropped frames, ffmpeg chokes with this message: > Could not find codec parameters for stream 0 (Video: exr, rgb48le): > unspecified size > > Googling, I see that other people have hi

Re: [FFmpeg-user] OpenEXR input with cropped data window produces black output

Hello, FFmpeg EXR decoder, have some trouble with display window != data window And if i remember correctly, if top left doesn't start at 0/0 But the way to manage the display window, is not the same, if data window is bigger than display window or the opposite. I begin to work on this, but not

Re: [FFmpeg-user] How to make CBR AAC

> > I can confirm your finding. Apparently, the native aac encoder doesn't > support true CBR (but does VBR or ABR instead). > > I tried with libfdk_aac, and the results are according to what you are > trying to achieve. The Zeranoe build doesn't have libfdk_aac support > though. > > Moritz > > The

[FFmpeg-user] How to make CBR AAC

Hello, I need to create mp4 file with aac audio with a 256kbits average bitrate. The problem, is that my file, have lot of silence, but i need to have an average audio bitrate very close to 256k. Is there a way, to force the aac encoder to add some "fill" in order to appear like a cbr bitrate (

Re: [FFmpeg-user] Mov : how to set interlaced value of mov muxer

2016-10-23 20:13 GMT+02:00 Carl Eugen Hoyos : > 2016-10-23 19:46 GMT+02:00 Martin Vignali : > > > Instead of writing xd5c data format, ffmpeg write xd5e. > > This is ticket #5504. > > Thanks for your answer, I found a way to resolve the issue. need to add after the input

[FFmpeg-user] Mov : how to set interlaced value of mov muxer

Hello I would like to encode some progressive video to interlace quicktime I try to use -top 1 and +ildct, The frames seems to be compressed as interleaved, but the mov muxer, still think it's a progressive frame. The codec name for xdcam is not the right one, and the fiel value is not correct fo

Re: [FFmpeg-user] Compile ffmpeg on mips-qemu

> > What does gcc -v for the used compiler show? > gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/lib/gcc/mips-linux-gnu/4.6/lto-wrapper Target: mips-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Debian 4.6.3-14' --with-bugurl=file:///usr/share/doc/gcc-4.

Re: [FFmpeg-user] Compile ffmpeg on mips-qemu

2016-06-30 23:33 GMT+02:00 Carl Eugen Hoyos : > Martin Vignali gmail.com> writes: > > > Configure result : > > ./configure --arch=mips64 --prefix=../build --disable-ffplay > > --disable-ffprobe --disable-ffserver --enable-zlib --disable-asm > > --disable-vi

Re: [FFmpeg-user] Compile ffmpeg on mips-qemu

2016-06-30 17:18 GMT+02:00 Carl Eugen Hoyos : > Martin Vignali gmail.com> writes: > > > I try several configure line, but when i launch ffmpeg, i still > > have "Illegal instruction" > > You could try --disable-asm > > > Thanks for your answer.

[FFmpeg-user] Compile ffmpeg on mips-qemu

Hello, I would like to compile ffmpeg on mips, in order to test the exr decoder on it. I try several configure line, but when i launch ffmpeg, i still have "Illegal instruction" I use qemu on mac os x, launch with this command : qemu-system-mips64 -M malta -kernel ./vmlinux-3.2.0-4-5kc-malta -hd

Re: [FFmpeg-user] converting broadcast wavs strips xml metadata

Hello, If i correctly remember you need to use -write_bext 1, in order to create BWF file. Best regards Martin 2015-04-19 21:18 GMT+02:00 Dave Rice : > Hi Pete, > > > On Apr 19, 2015, at 11:34 AM, Pete Coward wrote: > > > > ffmpeg supports decoding and encoding of broadcast wavs (bwf format)