Re: [FFmpeg-user] Multiple outputs advice. Live stream/Record/Preview

>But the general advice is to use ffmpeg for video processing >(capturing, filtering, encoding), >then provide output streams to the streaming server (for reliability, >run it on the same machine). >Use the streaming server API to control recording, provide streams for >outside users (or CDN). Ju

[FFmpeg-user] Multiple outputs advice. Live stream/Record/Preview

another way? We want to keep CPU use down to as reasonable as possible. https://trac.ffmpeg.org/wiki/Creating%20multiple%20outputs is the relevant page, but not sure which way to go. Thanks, Andrew ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org

[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

On Sun, Jan 14, 2024 at 8:24 AM Mark Filipak wrote: > > This is not the way to do things, Andrew. > > Please do not add your notice of a trac ticket submission to my reply. It has > nothing to do with my > reply. > > Your ticket has justifiably been closed. > > Tr

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

[FFmpeg-user] ffmpeg unable to read/play a blu-ray MPLS that works in other players

s output despite mpv playing fine. Thank you! Andrew --- * Sample: https://files.pub.chiller3.com/issues/ffmpeg/20230122-mpls/AVATAR_CE_D1.sample.tar - SHA-256: 0b2db33fb089f928d6f0d93cef4fcecb0a8bb2d52ab3d18603cd444f960cf1f3 - ~3.8 GiB tarball with original BDMV directory structure - This is th

[FFmpeg-user] Compile error: libavcodec/x86/hevc_mc.o] Error 1

libavutil/x86/tx_float.o - This error occurs with or without x265, I am running x265 version 3.4. Encoding with FFmpeg / hevc still works fine... Thanks, Andrew -- You think that's air you're breathing now? ___ ffmpeg-user mail

[FFmpeg-user] Video filters are ignoring -noautorotate

I’m noticing that -noautorotate is not being accounted for by the video filters. This is apparent with a rotated video input and grabbing a thumbnail from it using the video filters. Tried it with a couple different commands, with the same results: `ffmpeg -noautorotate -i [rotated-video.mov] -

[FFmpeg-user] fps output stuck at 5fps with flv / rtmp outpu

I have a problem with ffmpeg 4.1.6 (raspbian release) that is really strange. I'm trying to stream a webcam to an rtmp endpoint and the framerate is stuck at 5fps. Things i've checked: - camera can do 25fps at 800x600 with mjpeg or raw output, verified with v4l2-ctl and ffmpeg - camera works to

Re: [FFmpeg-user] Can FFmpeg Record Video On Linux Using V4L2 in V4L2_CAP_VIDEO_CAPTURE_MPLANE Mode?

/dev/video0 ffmpeg version 4.2.1 Copyright (c) 2000-2019 the FFmpeg developers built with gcc 9.2.0 (GCC) configuration: --disable-stripping --enable-pic --enable-shared --enable-pthreads --cross-prefix=aarch64-klondike-linux- --ld='aarch64-klondike-linux-gcc --sysroot=/home/andrew/Proje

[FFmpeg-user] Can FFmpeg Record Video On Linux Using V4L2 in V4L2_CAP_VIDEO_CAPTURE_MPLANE Mode?

V4L2_CAP_VIDEO_CAPTURE to open. My device does not support V4L2_CAP_VIDEO_CAPTURE but it does support V4L2_CAP_VIDEO_CAPTURE_MPLANE. Does FFmpeg have support for V4L2_CAP_VIDEO_CAPTURE_MPLANE? ~ Andrew ___ ffmpeg-user mailing list ffmpeg-user

[FFmpeg-user] How to analyse?

I need to: Determine (in ms) the silence between the start of an audio file and the start of the audio. Determine the time (in ms) at the end of the file when the audio level drops to -20db pydub uses ffmpeg for this in the python module: audio_segment but I can't figure out how! Please hel

[FFmpeg-user] Loss of mp4 metadata when copying

is the output: https://pastebin.com/r8kgt7Ny I am trying to change these as I forgot to modify the name of the audio stream when transcoding with HandBrake. I am trying to avoid re-encoding the file just to rename the audio track (so it appears correctly in programs such as VLC). Thanks for any h

[FFmpeg-user] Settings behind nvenc presets?

wrapped up in these presets? The encoding settings from h264_nvenc are not revealed in the metadata of the output file and grep'ing through the source has been fruitless so far... Thanks, Andrew -- You think that's air you're breathing now? ___

Re: [FFmpeg-user] List members behaving badly

ve which would have had > just two posts at all - practice what you preach hypocrite > ___ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or e

Re: [FFmpeg-user] How to UN-sub (and re-sub) the the mailing list?

And I subscribe again by asking any question? On Wednesday, February 20, 2019, 3:26:28 AM EST, Moritz Barsnick wrote: On Wed, Feb 20, 2019 at 08:14:18 +, Andrew Valenkov wrote: > I am but a novice, not aiming to be an FFMPEG expert. I have some > questions, and pretty m

[FFmpeg-user] How to UN-sub (and re-sub) the the mailing list?

I am but a novice, not aiming to be an FFMPEG expert. I have some questions, and pretty much no answers. It is not in my best interest to be subscribed to the mailing list all the time, since I get about a dozen (or 3 dozens) messages in my inbox DAILY. So, how does one unsubscribe (AND RE-SUBSC

Re: [FFmpeg-user] I need to be able to convert audio files to video & run through an admin system on a website

o post the data to a script on a server that you do control, and then copy the finished file to the web server. If you still need help, please let me know. Thanks, Andrew Watters -- Andrew G. Watters and...@andrewwatters.com +1 (415) 261-8527 http://www.andreww

[FFmpeg-user] unsubscribe

> On Oct 2, 2018, at 9:41 AM, David wrote: > > Hi > > I am trying to get ffmpeg to get a feed from a security camera an capture > "motion only" - I have successfully done that when processing a recording, > but whenever I capture from the stream it gets cut at exactly 400 frames: > > > >

Re: [FFmpeg-user] Same binary and same command 1 byte difference first frame

On Tue, 4 Sep 2018 at 09:15 Carl Eugen Hoyos wrote: > 2018-08-31 2:57 GMT+02:00, Andrew Sinclair : > > > Bit of a long shot here in case anyone may know, I am running the same > > binary of ffmpeg on the same docker image on 2 different hosts and as a > > result I get a

[FFmpeg-user] Same binary and same command 1 byte difference first frame

Hi, Bit of a long shot here in case anyone may know, I am running the same binary of ffmpeg on the same docker image on 2 different hosts and as a result I get a different sized first I frame (out by 1 byte) between the 2 hosts, anyone have any idea how that could happen or know any settings I cou

Re: [FFmpeg-user] ffmpeg named pipe

>> I am trying to use named pipe as the input of ffmpeg. Any reason you can’t use stdin or a socket? ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-

[FFmpeg-user] Is there a way to exit after output file is saved?

ffmpeg is listening on a socket for input. I need ffmpeg to exit after the output file is saved. Is there any way to do this? thanks! ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe,

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