Re: [FFmpeg-user] OpenVPL-cpu and ffmpeg's qsv encoder

On Mon, Oct 14, 2024 at 5:25 PM Ferdi Scholten wrote: > Hello all! > > I was trying to debug my _qsv profiles for Cinelerra-GG (of course) and > was > > hitting wall due to my machine being AMD CPU/Nvidia (nouveau) GPU. > > > > Then I foundhttps:// > github.com/oneapi-src/oneVPL-cpu/blob/master/I

[FFmpeg-user] OpenVPL-cpu and ffmpeg's qsv encoder

Hello all! I was trying to debug my _qsv profiles for Cinelerra-GG (of course) and was hitting wall due to my machine being AMD CPU/Nvidia (nouveau) GPU. Then I found https://github.com/oneapi-src/oneVPL-cpu/blob/master/INSTALL.md Deprecated by intel but still buildable after some fighting. bas

[FFmpeg-user] origin of those coefficients for rgb-yuv matrix

Not sure if it was explained to me elsewhere before https://sites.google.com/view/ananyamukherjeehome/image-processing/color-spaces UV coefficients from Y coefficients In a 3x3 RGB to YUV matrix, it is enough to know the RGB to Y conversion coefficients. The coefficients for U and V can be

Re: [FFmpeg-user] How chrRangeToJpeg_c() works?

пн, 9 сент. 2024 г., 23:19 Andrew Randrianasulu : > > > пн, 9 сент. 2024 г., 23:04 Andrew Randrianasulu : > >> >> >> пн, 9 сент. 2024 г., 18:06 Andrew Randrianasulu > >: >> >>> Looking at libswscale/swscale.c (due to >>> https://trac.ff

Re: [FFmpeg-user] yuvtestsrc to y4m differs with and without format rgba->yuv444p conversion

On Tue, Sep 10, 2024 at 4:09 AM Paul B Mahol wrote: > > On Sun, Sep 8, 2024 at 8:07 PM Andrew Randrianasulu > wrote: > > > On Sun, Sep 8, 2024 at 9:02 PM Paul B Mahol wrote: > > > > > > On Sun, Sep 8, 2024 at 7:49 AM Andrew Randrianasulu < &

Re: [FFmpeg-user] How chrRangeToJpeg_c() works?

пн, 9 сент. 2024 г., 23:04 Andrew Randrianasulu : > > > пн, 9 сент. 2024 г., 18:06 Andrew Randrianasulu : > >> Looking at libswscale/swscale.c (due to >> https://trac.ffmpeg.org/ticket/11182#comment:5) I do not understand >> how it works :) >> >> why shit

Re: [FFmpeg-user] How chrRangeToJpeg_c() works?

пн, 9 сент. 2024 г., 18:06 Andrew Randrianasulu : > Looking at libswscale/swscale.c (due to > https://trac.ffmpeg.org/ticket/11182#comment:5) I do not understand > how it works :) > > why shits to 11 and to 12 ? > > // FIXME all pal and rgb srcFormats could do this conversi

[FFmpeg-user] How chrRangeToJpeg_c() works?

Looking at libswscale/swscale.c (due to https://trac.ffmpeg.org/ticket/11182#comment:5) I do not understand how it works :) why shits to 11 and to 12 ? // FIXME all pal and rgb srcFormats could do this conversion as well // FIXME all scalers more complex than bilinear could do half of this transf

Re: [FFmpeg-user] yuvtestsrc to y4m differs with and without format rgba->yuv444p conversion

On Sun, Sep 8, 2024 at 9:02 PM Paul B Mahol wrote: > > On Sun, Sep 8, 2024 at 7:49 AM Andrew Randrianasulu > wrote: > > > git up to d9f594209fb1a9c87017034f943dcb311a9d2896 > > > > first command > > > > > > bash-5.1$ /dev/shm/ffmpeg/ffmpe

[FFmpeg-user] yuvtestsrc to y4m differs with and without format rgba->yuv444p conversion

git up to d9f594209fb1a9c87017034f943dcb311a9d2896 first command bash-5.1$ /dev/shm/ffmpeg/ffmpeg -f lavfi -i yuvtestsrc -frames 1 -r 25 -vf format=rgba,format=yuv444p -color_range 1 /dev/shm/yuv-mpeg-rgba-yuv444p.y4m -debug log ffmpeg version N-115688-gd9f594209f Copyright (c) 2000-2024 th

Re: [FFmpeg-user] can swscale handle AV_PIX_FMT_YUV444P input/output?

пт, 6 сент. 2024 г., 15:02 Andrew Randrianasulu : > On Thu, Sep 5, 2024 at 9:21 AM Andrew Randrianasulu > wrote: > > > > On Wed, Sep 4, 2024 at 11:27 PM Andrew Randrianasulu > > wrote: > > > > > > https://www.cinelerra-gg.org/bugtracker/view.php?id=66

Re: [FFmpeg-user] can swscale handle AV_PIX_FMT_YUV444P input/output?

On Thu, Sep 5, 2024 at 9:21 AM Andrew Randrianasulu wrote: > > On Wed, Sep 4, 2024 at 11:27 PM Andrew Randrianasulu > wrote: > > > > https://www.cinelerra-gg.org/bugtracker/view.php?id=665 > > > > we run into strange problem: > > > > if cinele

Re: [FFmpeg-user] can swscale handle AV_PIX_FMT_YUV444P input/output?

чт, 5 сент. 2024 г., 09:23 Diederick C. Niehorster : > On Thu, Sep 5, 2024 at 8:19 AM Andrew Randrianasulu > wrote: > > > > so, I used ffmpeg git up to d9f594209fb1a9c87017034f943dcb311a9d2896 > > > > make testprog (after ./configure) > > > > the

Re: [FFmpeg-user] can swscale handle AV_PIX_FMT_YUV444P input/output?

On Wed, Sep 4, 2024 at 11:27 PM Andrew Randrianasulu wrote: > > https://www.cinelerra-gg.org/bugtracker/view.php?id=665 > > we run into strange problem: > > if cinelerra-gg uses RGBA-8 format internally we can process yuv444p (full > chroma) test sample made with &

[FFmpeg-user] can swscale handle AV_PIX_FMT_YUV444P input/output?

https://www.cinelerra-gg.org/bugtracker/view.php?id=665 we run into strange problem: if cinelerra-gg uses RGBA-8 format internally we can process yuv444p (full chroma) test sample made with ffmpeg -f lavfi -i yuvtestsrc -frames 1 -color_range 2 /dev/shm/yuv-test.y4m by rendering it to y4m (y

Re: [FFmpeg-user] init_hw_device qsv for hwaccel on Skylake iGPU + Nvidia GF GPU

пн, 2 сент. 2024 г., 22:54 Terje Hanssen : > > Den 02.09.2024 15:58, skrev Wang, Fei W: > > On Mon, 2024-09-02 at 15:29 +0200, Terje J. Hanssen wrote: > >> > >> > >> On 9/2/24 07:01, Wang, Fei W wrote: > >> > >>> On Sun, 2024-09-01 at 10:53 +0200, Terje J. Hanssen wrote: > >>> > I have not su

Re: [FFmpeg-user] Failed setup for format vulkan: hwaccel initialisation returned error for Arc A750

вт, 13 авг. 2024 г., 19:46 Terje J. Hanssen : > Hi, > > I try to test Vulkan h264 or h265 decoding according to test command at > https://trac.ffmpeg.org/wiki/HWAccelIntro#Vulkan > ffmpeg -init_hw_device "vulkan=vk:0" -hwaccel vulkan > -hwaccel_output_format vulkan -i INPUT -f null - -benchmark >

Re: [FFmpeg-user] AMD Ryzen 5500GT APU video processing libraries and Linux ffmpeg video encoding.

сб, 10 авг. 2024 г., 19:06 Guddla Rupesh : > What does uvd, vce, freesync mean in general. > > I think vce means video codec engine. > > Freesync from AMD is equivalent to Intel quicksync. > > == > No, I think it more related to variable refresh rate for monitor, not en/decoding try va-api?

Re: [FFmpeg-user] Region of interest in ISOBMFF?

чт, 8 авг. 2024 г., 21:34 Bruce Gavin via ffmpeg-user < ffmpeg-user@ffmpeg.org>: > Thanks for the great tip. > Much appreciated. > If this works, it is exactly what I am searching for. > > I'm having an invalid argument error. > Please take a peek at the command line below, see if you can spot wh

Re: [FFmpeg-user] IDR frames

чт, 4 июл. 2024 г., 02:39 Mark Filipak : > H.264 appears to have made I- P- & B-frames obsolete. > > Everyone's probably seen my DTS-PTS diagrams. > > Closed GOP > PTS order I B B P B B P.. > / __/ __/ > / // > DTS order I P B B P B B.

Re: [FFmpeg-user] key frame

чт, 27 июн. 2024 г., 23:39 Mark Filipak : > Hello All, > > I'm considering buying professional video software to evaluate and analyze > FFmpeg trims and splices > and for troubleshooting. My objective is to improve my edits, and to > improve FFmpeg. I'm retired, I > have plenty of time, I have ple

Re: [FFmpeg-user] This is totally out of line / should not happen / is a reason for moderation on this list.

чт, 20 июн. 2024 г., 10:17 Reindl Harald : > > > Am 20.06.24 um 01:23 schrieb Bouke / edit 'B: > > Well, why don’t you seek some professional help and get some drugs for > your anger problems? > I think it must be noted that having mental problems is not something ppl just do voluntary. So, plea

Re: [FFmpeg-user] field_sequence from H.262

пт, 24 мая 2024 г., 20:16 Mark Filipak : > This is from H.262. > ___ > | | > | field_sequence – A 3-bit integer which defines the number of the | > | field in the ei

Re: [FFmpeg-user] Correct configuration for Mac Pro 6, 1 AMD FirePro D500s?

пт, 24 мая 2024 г., 12:07 Scott Lutz : > I have been trying for a couple of days to leverage the h264_videotoolbox > hardware acceleration capabilities of ffmpeg on dual AMD FirePro D500s of > my Mac Pro 6,1, but without success. Does hw acceleration working anywhere in macos? google put this s

Re: [FFmpeg-user] ffmpeg wav lossless to youtube mov?

пт, 24 мая 2024 г., 01:37 Reindl Harald : > > > Am 24.05.24 um 00:34 schrieb Zathras Yes: > > Yes, I know that. Just add a picture and it's fine. > > MOV with PCM/WAV is never fine > from compatibility with older software? yes. Youtube probably does not want to serve relatively huge lossless unco

Re: [FFmpeg-user] ffmpeg wav lossless to youtube mov?

пт, 24 мая 2024 г., 01:00 Reindl Harald : > > > Am 23.05.24 um 23:44 schrieb Zathras Yes: > > And yes, a conversion of the soundfiles is not wanted, exactly. > > > > In a picky manner of speaking, it is a conversion of one file to another, > > but let''s not go into this nitpicking here. > > again

Re: [FFmpeg-user] ffmpeg 6.1.1 fails to compile with mingw-w64 gcc 14

пт, 17 мая 2024 г., 20:02 Reindl Harald : > > > Am 17.05.24 um 17:58 schrieb Biswapriyo Nath: > >> what about trying the latest version instead 6.1.1 from last year when > >> you use a compiler even newer than on Fedora 39? > > > > The same issue was reported with 7.0 release > > https://trac.ffmp

Re: [FFmpeg-user] How to play stereo stream as stereo on Windows 10

пт, 15 мар. 2024 г., 11:37 Mice Tecumseh via ffmpeg-user < ffmpeg-user@ffmpeg.org>: > Hello; > > I stream stereo FLAC from Ubuntu 22.04 with command: > > ffmpeg -f pulse -i "remote.monitor" -acodec pcm_s16le -ar 48000 -f s16le > -ac 2 "udp://192.168.1.99:18181" > and play this stereo stream correc

Re: [FFmpeg-user] Packet corrupt on cut, notice on concat

вт, 20 февр. 2024 г., 05:02 amindfv--- via ffmpeg-user < ffmpeg-user@ffmpeg.org>: > On Mon, Feb 19, 2024 at 08:49:14PM +0100, Paul B Mahol wrote: > > > Best to create minimal reproducible usecase with all required files to > reproduce it > > By the way, this isn't just for reporting on Trac. For m

Re: [FFmpeg-user] amr_nb in mp4 container?

On Thu, Feb 15, 2024 at 12:00 PM Ferdi Scholten wrote: > > чт, 15 февр. 2024 г., 11:00 Andrew Randrianasulu : > >> > >> чт, 15 февр. 2024 г., 10:39 Ferdi Scholten: > >> > >>> The AMR audio format is not specified as a valid audio format for the >

Re: [FFmpeg-user] amr_nb in mp4 container?

чт, 15 февр. 2024 г., 11:00 Andrew Randrianasulu : > > > чт, 15 февр. 2024 г., 10:39 Ferdi Scholten : > >> The AMR audio format is not specified as a valid audio format for the >> mp4 container (see *ISO >> < >> https://en.wikipedia.org/wiki/Internationa

Re: [FFmpeg-user] amr_nb in mp4 container?

чт, 15 февр. 2024 г., 10:39 Ferdi Scholten : > The AMR audio format is not specified as a valid audio format for the > mp4 container (see *ISO > < > https://en.wikipedia.org/wiki/International_Organization_for_Standardization>/IEC > >

[FFmpeg-user] amr_nb in mp4 container?

I managed to make video with amr_nb codec in openCamera (android 11) mediainfo /dev/shm/VID_20240215_064913.mp4 General Complete name: /dev/shm/VID_20240215_064913.mp4 Format : MPEG-4 Format profile : Bas

[FFmpeg-user] where ffmpeg parses mpeg audio headers?

I was looking into https://trac.ffmpeg.org/ticket/1258#comment:12 (mpeg2 multichannel audio in HDV) and reading documents linked in this ticket. I still have very vague understanding on where ffmpeg audio (PES?) headers read by ffmpeg somewhere in ffmpeg/libavformat/mpeg.c ? According to this

Re: [FFmpeg-user] LPCM in DVD - 44.1/32khz sample rate?

On Sun, Jan 21, 2024 at 2:47 PM Paul B Mahol wrote: > > /* no traces of 44100 and 32000Hz in any commercial software or player */ well, but mpv (and vlc?) supports it > > On Sun, Jan 21, 2024 at 3:44 AM Andrew Randrianasulu < > randrianas...@gmail.com> wrote: > >

[FFmpeg-user] patch for 44.1/32 khz pcm input in pcm dvd encoder

0438f90d10ef7f5162d6b7221a02ad240c1e99dd Mon Sep 17 00:00:00 2001 From: Andrew Randrianasulu Date: Sun, 21 Jan 2024 06:10:32 +0300 Subject: [PATCH] Add 32/44.1 khz sampling frequencies to pcm-dvd encoder Signed-off-by: Andrew Randrianasulu --- libavcodec/pcm-dvdenc.c | 8 +++- 1 file changed

[FFmpeg-user] LPCM in DVD - 44.1/32khz sample rate?

According to this source (vlc) lpcm dvd audio supports lower frequencies like 44100/32000 hz - useful for direct dv transcoding for example https://github.com/videolan/vlc/blob/master/modules/codec/lpcm.c see lines 524, 608 Does this mean that libavcodec/pcm-dvdenc.c can be trivially extend

Re: [FFmpeg-user] cutting mp4 with ffmpeg

e information > > --Mark. > > On 13/01/2024 22.11, Andrew Randrianasulu wrote: > > On Sat, Jan 13, 2024 at 10:27 PM Mark Filipak > > wrote: > >> > >> On 13/01/2024 12.50, Andrew Randrianasulu wrote: > >>> On Sat, Jan 13, 2024 at 8:57 PM Def Eti

Re: [FFmpeg-user] cutting mp4 with ffmpeg

вс, 14 янв. 2024 г., 06:51 Mark Filipak : > On 13/01/2024 22.11, Andrew Randrianasulu wrote: > -snip- > > I added ticket about ffprobe/vf_showinfo displaying truncated duration: > > > > https://trac.ffmpeg.org/ticket/10799#ticket > > Andrew, please remove that ticke

Re: [FFmpeg-user] cutting mp4 with ffmpeg

On Sat, Jan 13, 2024 at 10:27 PM Mark Filipak wrote: > > On 13/01/2024 12.50, Andrew Randrianasulu wrote: > > On Sat, Jan 13, 2024 at 8:57 PM Def Etienne wrote: > -snip- > >> ffmpeg -i ~/6029.mp4 -copyts c:v copy -c:acopy -t 64.600 > >> dev/shm/6029_cut.mp4 &

Re: [FFmpeg-user] cutting mp4 with ffmpeg

On Sat, Jan 13, 2024 at 9:22 PM DEF wrote: > > On Sat, 13 Jan 2024 at 19:09, Andrew Randrianasulu > wrote: > > > > > > > also > > > > /dev/shm/ffmpeg/ffmpeg -i /dev/shm/6029_cut_2.mp4 -vf showinfo -f null > > /dev/null > > > > last li

Re: [FFmpeg-user] cutting mp4 with ffmpeg

On Sat, Jan 13, 2024 at 8:57 PM Def Etienne wrote: > > > Sent from my iPhone > > > On 13 Jan 2024, at 15:44, Andrew Randrianasulu > > wrote: > > > > I compiled new ffmpeg I tried to cut mp4 > > > > -to parameter was coming from mpv: > &

[FFmpeg-user] cutting mp4 with ffmpeg

I compiled new ffmpeg I tried to cut mp4 -to parameter was coming from mpv: bash-5.1$ mpv ~/6029.mp4 (+) Video --vid=1 (*) (h264 720x400 25.000fps) (+) Audio --aid=1 (*) (aac 2ch 48000Hz) AO: [alsa] 48000Hz stereo 2ch float VO: [gpu] 720x400 yuv420p (Paused) AV: 00:01:04.600 / 01:28:31.600 (1%)

[FFmpeg-user] split from Mark's trimming thread

I was looking into loslesscut issue tracker and found two related issues: https://github.com/mifi/lossless-cut/issues/126 " Implement "smart cut" this branches into avcut and its explanation, and into https://github.com/mifi/lossless-cut/issues/1216 "How to seek to and cut from a frame in ffmpeg

Re: [FFmpeg-user] Force target DTS == source DTS -- How?

пт, 12 янв. 2024 г., 05:18 Mark Filipak : > On 1/10/24 16:50, Devin Heitmueller wrote: > > On Wed, Jan 10, 2024 at 4:26 PM Mark Filipak > wrote: > >> The change from 1048560 to 1174560 has to be happening inside the > muxer, wouldn't you say? We now > >> know that what's going into the muxer is r

Re: [FFmpeg-user] Faster ffprobe-based detection of open GOP h264 ?

чт, 11 янв. 2024 г., 17:42 Nicolas Gaullier : > >De : ffmpeg-user De la part de Andrew > Randrianasulu > > > >But as it was said in forum post above - ffprobe a bit slow, few > minutes for whole video, eating one cpu core completely. > > > >Is there faste

Re: [FFmpeg-user] Faster ffprobe-based detection of open GOP h264 ?

чт, 11 янв. 2024 г., 03:13 Andrew Randrianasulu : > I was looking at videohelp forum > > > https://web.archive.org/web/20201125203546/https://forum.videohelp.com/threads/398119-Cutting-Open-GOP-H264-videos-properly > > (web archive link because it hopefully will stay active

[FFmpeg-user] Faster ffprobe-based detection of open GOP h264 ?

I was looking at videohelp forum https://web.archive.org/web/20201125203546/https://forum.videohelp.com/threads/398119-Cutting-Open-GOP-H264-videos-properly (web archive link because it hopefully will stay active for some time even if forum software will be upgraded and ruin old links in the futu

Re: [FFmpeg-user] Towards better trims & concatenations

ср, 10 янв. 2024 г., 06:23 Andrew Randrianasulu : > > > вт, 9 янв. 2024 г., 15:04 Rob Hallam : > >> On Mon, 8 Jan 2024 at 23:02, Mark Filipak >> wrote: >> >> > [explanation snipped] >> > Oh, I think I see why your difficulty, Rob. >> >

Re: [FFmpeg-user] Towards better trims & concatenations

вт, 9 янв. 2024 г., 15:04 Rob Hallam : > On Mon, 8 Jan 2024 at 23:02, Mark Filipak > wrote: > > > [explanation snipped] > > Oh, I think I see why your difficulty, Rob. > > Thank you for taking the time to write the explanations, they are much > appreciated. > > My difficulty, as you guessed, is I

Re: [FFmpeg-user] sntsc

вт, 9 янв. 2024 г., 11:35 Mark Filipak : > On 1/8/24 01:46, Andrew Randrianasulu wrote: > > пн, 8 янв. 2024 г., 09:13 Mark Filipak : > > > >> On 1/8/24 00:26, Andrew Randrianasulu wrote: > >>> пн, 8 янв. 2024 г., 05:14 Mark Filipak : > >>>> What

Re: [FFmpeg-user] Towards better trims & concatenations

вт, 9 янв. 2024 г., 02:02 Mark Filipak : > On 1/8/24 08:08, Rob Hallam wrote: > > On Mon, 8 Jan 2024 at 12:37, Mark Filipak > wrote: > >> > >> On 1/8/24 07:16, Rob Hallam wrote: > >>> On Mon, 8 Jan 2024 at 12:07, Mark Filipak > wrote: > >>> > For example, if 'v' (video) and 'a' (audio) pack

Re: [FFmpeg-user] sntsc

пн, 8 янв. 2024 г., 09:13 Mark Filipak : > On 1/8/24 00:26, Andrew Randrianasulu wrote: > > пн, 8 янв. 2024 г., 05:14 Mark Filipak : > >> What is it that you want to know? > >> > > > > I think I like to try and see bigger picture behind acronym

Re: [FFmpeg-user] Towards better trims & concatenations

пн, 8 янв. 2024 г., 07:02 Mark Filipak : > On 1/7/24 22:12, Jim DeLaHunt wrote: > > > For instance, this command: > > > > > ffmpeg -f lavfi -i "testsrc" -to 1:00 testpat.m2ts > > > > generates a 60-second video with a test pattern. Anyone with recent > FFmpeg can generate a video like > > this,

Re: [FFmpeg-user] sntsc

пн, 8 янв. 2024 г., 05:14 Mark Filipak : > On 1/7/24 17:34, Andrew Randrianasulu wrote: > > > > Well, we (cinelerra-gg users/hackers/maintainers) run into aspect ratio > > issues too , and I tried to demistify it for myself ... only to run into > > much more complex e

Re: [FFmpeg-user] sntsc

чт, 28 дек. 2023 г., 08:54 Kieran O Leary : > Hi Mark > > On Wed 27 Dec 2023 at 08:53, Mark Filipak > wrote: > > > On 12/27/23 01:58, Kieran O Leary wrote: > > > On Tue 26 Dec 2023 at 22:53, Mark Filipak > > >> Oh, no! Mister Billipedia! Hahahaha... (where people who are as ill > > >> informed

[FFmpeg-user] libswresample patch on master but not in 6.1 branch?

"swr/swresample: avoid reapplication of firstpts" Shouldn't it appear in 6.1 branch too? http://git.ffmpeg.org/gitweb/ffmpeg.git/commit/be8a4f80b97222d99b4262c9230ca8a1db28973a ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mail

Re: [FFmpeg-user] kmsgrab and audio problem

вс, 10 дек. 2023 г., 21:51 KoreanFanOfficial : > Show me your code where kmsrab working with alsa/pulse without any issue on > debian/arch system Cuz you cant, cuz this problem exist many years and > dont fixed. Do you even try to install debian/arch??? If you already > install arch/debian the

Re: [FFmpeg-user] resululotion probem

сб, 2 дек. 2023 г., 14:55 frhun : > > Hello > > > I've posted a couple of times before, where it's for this reason or that > reason, now my problem is that since q-scale was set to -g 2 well, every second frame is keyframe is kinda drastic on encoder! Try 15 or 25 . the > resolution has

Re: [FFmpeg-user] Compiling FFmpeg for nvidia hardware encoding on Debian 12

пн, 27 нояб. 2023 г., 19:54 Lowell Friesen : > Hi there, > > I’m trying to compile FFmpeg on Debian 12 to enable hardware encoding > with an Nvidia graphics card, but am having some issues. I have > installed the nvidia driver and cuda toolkit. This is the output of > |nvidia-smi|: > > |+-

[FFmpeg-user] does swscale support rgbf32 conversions?

I am trying to add fp32 tiff reading via ffmpeg for cinelerra-gg. we have this routine: convert_ctx = sws_getCachedContext(convert_ctx, ip->width, ip->height, pix_fmt, frame->get_w(), frame->get_h(), ofmt, SWS_POINT, NULL, NULL, NULL); if( !convert_ctx ) { fprintf(stderr, "FFVide

Re: [FFmpeg-user] A question about video encoding.

пн, 13 нояб. 2023 г., 14:35 Aditya Dandavate : > On Sun, 12 Nov, 2023, 11:15 pm Andrew Randrianasulu, < > randrianas...@gmail.com> wrote: > > > вс, 12 нояб. 2023 г., 20:23 Aditya Dandavate < > adityadandavat...@gmail.com > > >: > > > > > >

Re: [FFmpeg-user] UVC Interlaced Video

сб, 11 нояб. 2023 г., 13:05 Zdravko Ćirić : > Hello all, > > I'm trying to combine an alternating fields interlaced video stream from an > UVC video device. The device is an analog (CVBS) to digital converter that > supports Interlaced video through usage of the FID flag in the UVC data > headers.

Re: [FFmpeg-user] A question about video encoding.

вс, 12 нояб. 2023 г., 20:23 Aditya Dandavate : > I have an Intel Pentium G3240 processor. > This is a quite a low end processor and even x264 etc is cpu-intensive and > even encoding with this encoder is really slow. (6.0 to 6.5 fps with medium > preset). > > I encoded some videos with mpeg4 video

Re: [FFmpeg-user] 6.1 is out but I have request

сб, 11 нояб. 2023 г., 18:20 Gyan Doshi : > > > On 2023-11-11 08:03 pm, Andrew Randrianasulu wrote: > > For announcement writer(s) - can you please at least list API changes > with > > pointer to documentation section? > > See doc/APIchanges > well, there

[FFmpeg-user] 6.1 is out but I have request

For announcement writer(s) - can you please at least list API changes with pointer to documentation section? As someone who tries to co-maintain software (cinelerra-gg) relying on ffmpeg AND other libraries fishing out changes and examples out of git log exhaust me and makes me sad. __

Re: [FFmpeg-user] trying to save its output to the input

пт, 10 нояб. 2023 г., 22:01 Mark Filipak : > Never mind. I see it. Duh? > you missed "-i" before input? > ___ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above,

Re: [FFmpeg-user] question about opencl use in decoders/encoders

ср, 8 нояб. 2023 г., 00:36 Dennis Mungai : > On Tue, 7 Nov 2023 at 00:55, Andrew Randrianasulu > > wrote: > > > FFmpeg today support some opencl filters (but I was unable to use them > > freely in Cinelerra-gg probably because they require not just > > initializatio

Re: [FFmpeg-user] Seeking Efficient Video Redaction Using FFMPEG with Limited Memory Usage

вт, 7 нояб. 2023 г., 20:57 Carl Zwanzig : > On 11/7/2023 10:00 AM, Paul B Mahol wrote: > > I can answer it, > > Then DO SO! There's no reason to hold back. > well, I am not sure if anything can pull 2000 filters ON TOP of each other (src-> f1 -> f2 -> f3 ... -> f2000 ->end) but applying dynamic

[FFmpeg-user] question about opencl use in decoders/encoders

FFmpeg today support some opencl filters (but I was unable to use them freely in Cinelerra-gg probably because they require not just initialization of hw device but also manual up and download of data ...) but I wonder if same opencl infra can be used in decoders and encoders too? https://cml.new

Re: [FFmpeg-user] bad video settings

пт, 27 окт. 2023 г., 15:14 frhun : > > Hello everyone > > I have a problem > > youtube say this: > > " > ffmpeg For the keyframe frequency, set a maximum of four seconds. > Currently sending frames is not frequent enough, which causes buffering. > The current key frame rate is 9.0 seconds. Process

[FFmpeg-user] libcamera_android build fix?

diff --git a/libavdevice/android_camera.c b/libavdevice/android_camera.c index 602b59047d..c981985f10 100644 --- a/libavdevice/android_camera.c +++ b/libavdevice/android_camera.c @@ -648,8 +648,8 @@ static int add_display_matrix(AVFormatContext *avctx, AVStream *st)

[FFmpeg-user] ffmpeg git and makeinfo 7.1 error?

I am trying to build new ffmpeg on my aarch64 termux installation. pulled git long time ago, now tried to integrate libxcam filter (without libxcam installed for now) but I think I run into unrelated build error: makeinfo: error parsing ./doc/t2h.pm: Undefined subroutine &Texinfo::Config::set_fro

Re: [FFmpeg-user] A question about video codecs.

вс, 15 окт. 2023 г., 23:17 Phil Rhodes via ffmpeg-user < ffmpeg-user@ffmpeg.org>: > > > We removed cinepak encoder and decoder long time ago. > Boo! Vector compression is beautiful! > I think Paul trolled us a bit, from that I can see Cinepack decoder and encoder still around at https://git.ffmp

[FFmpeg-user] mlv demuxer fails to set codec?

I was playing around with raw2mlv utility and thus downloaded sample file from this forum post: https://www.magiclantern.fm/forum/index.php?topic=25945.0 https://www.dropbox.com/s/p2j112gyph5ywzu/ElgersburgBHF.zip?dl=0 around 20 mb. relatively recent ffprobe from git (as part of Cinelerra-GG co

Re: [FFmpeg-user] Trying to remember how I did this.....

ср, 4 окт. 2023 г., 10:34 Mark Dm : > Its NOT Telecine. It is Digital Video 8 video at 27.97 FPS > I am looking specifically for the setting that derives the 59.94FPS from > the 27.97 FPS source with such beauty and without deinterlace. > this answer mentions yadif=1 https://superuser.com/questi

Re: [FFmpeg-user] Is there a way to re-encode an inefficiently encoded file without losing quality and reducing file size?

вс, 1 окт. 2023 г., 02:43 Stéphane Archer : > Let's say you have a video file encoded with high bitrate with the > ultra-fast preset in H.264 because you couldn't afford CPU at that time. > Now you have a huge file mostly because it was encoded quickly. > > You are now two days later with access t

Re: [FFmpeg-user] How to merge and map 1 video file with 4 audio files?

сб, 30 сент. 2023 г., 20:58 MediaMouth : > > > > On Sep 30, 2023, at 09:31, Andrew Randrianasulu > wrote: > > > > may be remove all OUTPUT_CHx lines so output will be clearly into one mxf > > file? > > Thanks Andrew, will try! > > What made you think

Re: [FFmpeg-user] Is there an equivalent of Drobox Lepton but for h.264 videos?

ep 30, 2023 at 10:10 AM Stéphane Archer < > archersteph...@gmail.com > > > > > wrote: > > > > > On Sat, Sep 30, 2023 at 10:00 AM Andrew Randrianasulu < > > > randrianas...@gmail.com> wrote: > > > > > > > сб, 30 сент. 2023 г., 16:58 St

Re: [FFmpeg-user] How to merge and map 1 video file with 4 audio files?

сб, 30 сент. 2023 г., 19:08 Media Mouth : > How to merge and map 1 video file with 4 audio files? > > We've have 1 video file, 4 audio files, all same length. > The video file is DNxHD36 > The audio tracks are all .wav > > The goal is to merge all 5 files in sync > > Based on https://ffmpeg.org/ff

Re: [FFmpeg-user] Is there an equivalent of Drobox Lepton but for h.264 videos?

сб, 30 сент. 2023 г., 16:58 Stéphane Archer : > Is there an equivalent of Drobox Lepton but for h.264 videos? > Lepton is a lossless compression algorithm to compress jpeg at around 20% > there initial file size without any data loss. This is ideal to > achieve jpeg. > What about h.264 videos? >

[FFmpeg-user] mplayer's vdpau output broke after ffmpeg git be07145109074e128bd7a8255d81a2b9fdcdf10b

I was testing nouveau's vdpau state tracker and realized only MPlayer 1.5 was working, but not svn. I bisected ffmpeg embedded in mplayer's tree and found this: === be07145109074e128bd7a8255d81a2b9fdcdf10b is the first bad commit commit be07145109074e128bd7a8255d81a2b9fdcdf10b Author: Lynne Date