May 2005 - ffmpeg-user - lists.ffmpeg.org

4:2:0 to 4:2:2 conversion
by mangeshsk＠gmail.com 11 May '05

11 May '05

Experts, Pls let me how do I use ffmpeg to convert 4:2:0 YUV to 4:2:2 YUV. Infact whether I can use the ffmpeg for this purpose? Thanks in advance, Mangesh

3 6

MPEG patent infringement examples
by thiago.santos＠gmail.com 11 May '05

11 May '05

Hi, FFmpeg page (and MPlayer page) speak about "Multimedia is a patent minefield". Discussing MPEG standards with some colleagues, I was thinking about MPEG video coding examples of patent infringement. Are patent problems there in MPEG-1,2,4 implementations? Where? Motion-compensated prediction? Rate control? Storage? Are patent questions there equally in coding and decoding? Thank you for any example -- Thiago Santos

3 2

ffmpeg, choppy video
by runlevel_4＠passagen.se 11 May '05

11 May '05

Hi all, i'm using ffmpeg 0.6.4 (Linux) to stream a live feed over my intranet, since i get better signal 100 meters away from my "living-house", but i've got a choppy video-problem: I've tried most codecs, bitrates and settings but when i send video with absolutely no sound att all, video is fine and dandy, but when ANY sound is muxed in, video get's choppy. Have anyone else out there enqountered this problemo? Best regards to you all. _______________________________________________________ Skicka gratis SMS! http://www.passagen.se

3 4

Choppy video and horrible audio sync problems...
by keenerb＠roleplayga.org 11 May '05

11 May '05

Using either ffmpeg cvs snapshot or PLF's ffmpeg-0.4.9-0.pre1.0.101.2plf, ffmpeg seems to have some serious issues. ./ffmpeg -target vcd -ad /dev/dsp -vd /dev/video0 output.mpg results in seriously choppy video, and sound sync that starts off about a half-second out of sync and gradually gets worse. Video seems to play at about 1.5 times the actual speed. I've got a AthlonXP 2600+ with a half-gig of DDR400 memory, so it's not likely to be a performance problem with my system, I can't imagine. Here's my exact commandline and returned information: [keenerb at briank keenerb]$ xine output.mpg This is xine (X11 gui) - a free video player v0.99.2. (c) 2000-2004 The xine Team. [keenerb at briank keenerb]$ ffmpeg -target vcd -tvstd ntsc -ad /dev/dsp -vd /dev/video0 output.mpg ffmpeg version 0.4.9-pre1, build 4718, Copyright (c) 2000-2004 Fabrice Bellard built on Nov 18 2004 04:44:23, gcc: 3.4.1 (Mandrakelinux 10.1 3.4.1-4mdk) Assuming PAL for target. File 'output.mpg' already exists. Overwrite ? [y/N] y Input #0, video4linux, from '': Duration: N/A, bitrate: N/A Stream #0.0: Video: rawvideo, yuv420p, 352x288, 25.00 fps Input #1, audio_device, from '': Duration: N/A, bitrate: N/A Stream #1.0: Audio: pcm_s16le, 44100 Hz, mono, 705 kb/s Output #0, vcd, to 'output.mpg': Stream #0.0: Video: mpeg1video, 352x288, 25.00 fps, q=2-31, 1150 kb/s Stream #0.1: Audio: mp2, 44100 Hz, mono, 224 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #1.0 -> #0.1 Press [q] to stop encoding [mpeg1video @ 0x40261008]rc buffer underflow [mpeg1video @ 0x40261008]rc buffer underflow [mpeg1video @ 0x40261008]rc buffer underflow [mpeg1video @ 0x40261008]rc buffer underflow [mpeg1video @ 0x40261008]rc buffer underflow [mpeg1video @ 0x40261008]rc buffer underflowitrate=1823.4kbits/s [mpeg1video @ 0x40261008]rc buffer underflowitrate=1398.9kbits/s frame= 264 q=2.5 Lsize= 1813kB time=10.5 bitrate=1412.1kbits/s video:881kB audio:288kB global headers:0kB muxing overhead 55.141613% What's up with the "assuming PAL for target?" Doesnt -tvstd ntsc specify NTSC rather than pal? ANyway, any assistance you could offer would be appreciated. Brian K

5 16

ffserver problem
by runlevel_4＠passagen.se 10 May '05

10 May '05

I've got everything working just fine, audio and video streaming beatifully exept for a minor detail, with option NoAudio, video is perfect, but when i have audio (any codec, any samplerate etc...) video is choppy, just like there's dropped frames but still playing at set framerate (25fps) Pack-version 0.4.6 System: AMD-600Mhz, 128 Mb mem when running 70-75 % of CPU is used What can i do to make it lovely? _______________________________________________________ Skicka gratis SMS! http://www.passagen.se

2 3

"cannot find -lmp3lame"
by egksf＠earthlink.net 10 May '05

10 May '05

I'm trying to do an FFMPEG build on Windows (XP) according to the instructions at http://soenkerohde.com/tutorials/ffmpeg, but I'm getting stuck with this error on the link of avcodec.dll: ld.exe: cannot find -lmp3lame I'm using the "lame-3.96.1" version, and that compiled just fine. I tried copying its output files "libmp3lame.*" from /local/lib into the libavcodec directory, but that didn't help. I'm definitely not a Unix expert, so maybe this is something very obvious, but what exactly is the linker looking for, and where could it be? Thanks, Ed

3 2

Stream mapping
by r2d2d3d4d5＠hotmail.com 09 May '05

09 May '05

Is it possible to tell ffmpeg to map the video to stream x.1 and the audio to stream x.0 (especially when creating an asf)? I've tried using the map switch but it complains of a "Codec type mismatch for mapping"? I have some asf files in this configuration and when I run them through ffmpeg it switches the streams around automatically. I'm hoping it might work the other way around.

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Duration of converted H.263 file is incorrect
by Jon.Plotky＠Glenayre.com 09 May '05

09 May '05

I'm using ffmpeg to process a raw H.263 file into an AVI file with mpeg1 video. The duration of the H.263 video is about 10 seconds, but the resulting mpeg1 AVI file is only about 1 second long. If I use "-vcodec copy" to create an AVI file with H.263 video, the duration is also about 1 second. How can I make ffmpeg create an mpeg1 AVI file with the correct duration? I know the duration of the raw H.263 because it was captured from an RTP stream. I also know the frame rate is 10 fps, and there are 65 picture frames. Is there a way to use the RTP timestamps to make the output duration correct (by writing my own program, not through ffmpeg)? I've uploaded the raw H.263 file to ftp.mplayerhq.hu/MPlayer/incoming/video.h263. Here's the ffmpeg output: $ ./ffmpeg -s qcif -r 10 -i video.h263 -r 25 -vcodec mpeg1video video.avi ffmpeg version 0.4.9-pre1, build 4742, Copyright (c) 2000-2004 Fabrice Bellard configuration: --enable-shared --enable-memalign-hack built on Feb 18 2005 13:31:37, gcc: 3.2.3 (mingw special 20030504-1) Input #0, h263, from 'video.h263': Duration: N/A, bitrate: N/A Stream #0.0: Video: h263, 176x144, 29.97 fps File 'video.avi' already exists. Overwrite ? [y/N] y Output #0, avi, to 'video.avi': Stream #0.0: Video: mpeg1video, 176x144, 25.00 fps, q=2-31, 200 kb/s Stream mapping: Stream #0.0 -> #0.0 frame= 20 q=0.0 Lsize= 39kB time=0.8 bitrate= 415.1kbits/s video:34kB audio:0kB global headers:0kB muxing overhead 14.899196% $ ./ffmpeg -s qcif -r 10 -i video.h263 -vcodec copy video.avi ffmpeg version 0.4.9-pre1, build 4742, Copyright (c) 2000-2004 Fabrice Bellard configuration: --enable-shared --enable-memalign-hack built on Feb 18 2005 13:31:37, gcc: 3.2.3 (mingw special 20030504-1) Input #0, h263, from 'video.h263': Duration: N/A, bitrate: N/A Stream #0.0: Video: h263, 176x144, 29.97 fps File 'video.avi' already exists. Overwrite ? [y/N] y Output #0, avi, to 'video.avi': Stream #0.0: Video: h263, 176x144, 29.97 fps, q=2-31 Stream mapping: Stream #0.0 -> #0.0 frame= 23 q=42940.0 Lsize= 44kB time=0.8 bitrate= 470.5kbits/s video:39kB audio:0kB global headers:0kB muxing overhead 13.003856%

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amr_nb-fixed on Solaris
by Ave.Wrigley＠itn.co.uk 09 May '05

09 May '05

I have tried downloading and compiling amr-nb as instructed in libavcodec/amr.c, and I still ge the same problem. Is there anything else I should do appart from this and configuring with --enable-amr_nb-fixed? > ./ffmpeg -version ffmpeg version 0.4.9-pre1, build 4754, Copyright (c) 2000-2004 Fabrice Bellard configuration: --enable-amr_nb-fixed --disable-ffplay built on May 9 2005 11:14:49, gcc: 3.4.2 ffmpeg 0.4.9-pre1 libavcodec 4754 libavformat 4624 > ./ffmpeg -formats ffmpeg version 0.4.9-pre1, build 4754, Copyright (c) 2000-2004 Fabrice Bellard configuration: --enable-amr_nb-fixed --disable-ffplay built on May 9 2005 11:14:49, gcc: 3.4.2 File formats: E 3g2 3gp2 format E 3gp 3gp format D 4xm 4X Technologies format D RoQ Id RoQ format DE ac3 raw ac3 DE alaw pcm A law format DE asf asf format E asf_stream asf format DE au SUN AU Format DE avi avi format E crc crc testing format D dts raw dts DE dv DV video format E dvd MPEG2 PS format (DVD VOB) D ea Electronic Arts Multimedia Format DE ffm ffm format D film_cpk Sega FILM/CPK format D flic FLI/FLC animation format DE flv flv format DE gif GIF Animation DE h261 raw h261 DE h263 raw h263 DE h264 raw H264 video format D idcin Id CIN format DE image image sequence DE image2 image2 sequence DE image2pipe piped image2 sequence DE imagepipe piped image sequence D ipmovie Interplay MVE format DE m4v raw MPEG4 video format D matroska Matroska file format DE mjpeg MJPEG video E mov mov format D mov,mp4,m4a,3gp,3g2 QuickTime/MPEG4 format E mp2 MPEG audio layer 2 D mp3 MPEG audio E mp4 mp4 format DE mpeg MPEG1 System format E mpeg1video MPEG video E mpeg2video MPEG2 video DE mpegts MPEG2 transport stream format D mpegvideo MPEG video E mpjpeg Mime multipart JPEG format DE mulaw pcm mu law format D nsv NullSoft Video format E null null video format DE nut nut format D ogg Ogg E psp psp mp4 format D psxstr Sony Playstation STR format DE rawvideo raw video format D redir Redirector format DE rm rm format E rtp RTP output format D rtsp RTSP input format DE s16be pcm signed 16 bit big endian format DE s16le pcm signed 16 bit little endian format DE s8 pcm signed 8 bit format D sdp SDP D shn raw shn E singlejpeg single JPEG image D sol Sierra SOL Format E svcd MPEG2 PS format (VOB) DE swf Flash format DE u16be pcm unsigned 16 bit big endian format DE u16le pcm unsigned 16 bit little endian format DE u8 pcm unsigned 8 bit format E vcd MPEG1 System format (VCD) D vmd Sierra VMD format E vob MPEG2 PS format (VOB) DE wav wav format D wc3movie Wing Commander III movie format D wsaud Westwood Studios audio format D wsvqa Westwood Studios VQA format DE yuv4mpegpipe YUV4MPEG pipe format Image formats (filename extensions, if any, follow): DE gif gif Codecs: D V 4xm D V D 8bps D V D aasc EA ac3 DEA adpcm_4xm DEA adpcm_adx DEA adpcm_ct DEA adpcm_ea DEA adpcm_ima_dk3 DEA adpcm_ima_dk4 DEA adpcm_ima_qt DEA adpcm_ima_smjpeg DEA adpcm_ima_wav DEA adpcm_ima_ws DEA adpcm_ms DEA adpcm_swf DEA adpcm_xa D A alac DEV D asv1 DEV D asv2 D V D camtasia D V D cinepak D V D cljr D V D cyuv DEV D dvvideo DEV D ffv1 DEVSD ffvhuff D A flac D V D flic DEVSD flv DEA g726 DEV D h261 DEVSDT h263 D VSD h263i EV h263p D V DT h264 DEVSD huffyuv D V D idcinvideo D V D indeo2 D V indeo3 D A interplay_dpcm D V D interplayvideo EV ljpeg D V D loco D A mace3 D A mace6 D V D mdec DEV D mjpeg D V D mjpegb DEA mp2 D A mp3 D A mp3adu D A mp3on4 DEVSDT mpeg1video DEVSDT mpeg2video DEVSDT mpeg4 D VSDT mpegvideo DEVSD msmpeg4 DEVSD msmpeg4v1 DEVSD msmpeg4v2 D V D msrle D V D msvideo1 D V D mszh DEV pam DEV pbm DEA pcm_alaw DEA pcm_mulaw DEA pcm_s16be DEA pcm_s16le DEA pcm_s8 DEA pcm_u16be DEA pcm_u16le DEA pcm_u8 DEV pgm DEV pgmyuv DEV png DEV ppm D V D qdraw D V D qpeg D V D qtrle DEV rawvideo D A real_144 D A real_288 D A roq_dpcm D V D roqvideo D V D rpza DEV D rv10 DEV D rv20 D A shorten D V D smc DEV snow D A sol_dpcm DEA sonic EA sonicls D V D sp5x DEV D svq1 D VSD svq3 D V theora D V D truemotion1 D V D ultimotion D V vc9 D V D vcr1 D A vmdaudio D V D vmdvideo D V vp3 D V D vqavideo D A wmav1 D A wmav2 DEVSD wmv1 DEVSD wmv2 D V wmv3 D V D wnv1 D A ws_snd1 D A xan_dpcm D V D xan_wc3 D V D xl DEV D zlib Supported file protocols: file: pipe: udp: rtp: tcp: http: Frame size, frame rate abbreviations: ntsc pal qntsc qpal sntsc spal film ntsc-film sqcif qcif cif 4cif Motion estimation methods: zero(fastest) full(slowest) log phods epzs(default) x1 Note, the names of encoders and decoders dont always match, so there are several cases where the above table shows encoder only or decoder only entries even though both encoding and decoding are supported for example, the h263 decoder corresponds to the h263 and h263p encoders, for file formats its even worse Ave Wrigley Head of New Media Development, ITN 200 Grays Inn Rd, tel:+44-20-7430-4719 London WC1X 8XZ, mobile:+44-7713-986247 United Kingdom mailto:ave.wrigley at itn.co.uk > -----Original Message----- > From: ffmpeg-user-bounces at mplayerhq.hu > [mailto:ffmpeg-user-bounces at mplayerhq.hu] On Behalf Of Alex > Sent: 06 May 2005 16:27 > To: FFMpeg user questions and RTFMs > Subject: Re: [Ffmpeg-user] amr_nb-fixed on Solaris > > You need download amr-nb implementation. Please take a look at the > comment of libavcodec/arm.c . > > > On 5/5/05, Wrigley, Ave <Ave.Wrigley at itn.co.uk> wrote: > > Hi, > > > > I am compiling ffmpeg on a Solaris box (SunOS www3 5.8 > Generic_108528-22 > > sun4u sparc SUNW,Ultra-250 Solaris). I am trying to include > the amr_nb > > audio codec, using the --enable-amr_nb-fixed configure > option. However, > > the compiled version of ffmpeg doesn't appear to support amr_nb: > > > > > ./ffmpeg -version > > ffmpeg version 0.4.9-pre1, build 4754, Copyright (c) > 2000-2004 Fabrice > > Bellard > > configuration: --enable-amr_nb-fixed --disable-ffplay > > built on May 5 2005 11:37:57, gcc: 3.4.2 > > ffmpeg 0.4.9-pre1 > > libavcodec 4754 > > libavformat 4624 > > > > > ./ffmpeg -formats > > ffmpeg version 0.4.9-pre1, build 4754, Copyright (c) > 2000-2004 Fabrice > > Bellard > > configuration: --enable-amr_nb-fixed --disable-ffplay > > built on May 5 2005 11:37:57, gcc: 3.4.2 > > File formats: > > E 3g2 3gp2 format > > E 3gp 3gp format > > D 4xm 4X Technologies format > > D RoQ Id RoQ format > > DE ac3 raw ac3 > > DE alaw pcm A law format > > DE asf asf format > > E asf_stream asf format > > DE au SUN AU Format > > DE avi avi format > > E crc crc testing format > > D dts raw dts > > DE dv DV video format > > E dvd MPEG2 PS format (DVD VOB) > > D ea Electronic Arts Multimedia Format > > DE ffm ffm format > > D film_cpk Sega FILM/CPK format > > D flic FLI/FLC animation format > > DE flv flv format > > DE gif GIF Animation > > DE h261 raw h261 > > DE h263 raw h263 > > DE h264 raw H264 video format > > D idcin Id CIN format > > DE image image sequence > > DE image2 image2 sequence > > DE image2pipe piped image2 sequence > > DE imagepipe piped image sequence > > D ipmovie Interplay MVE format > > DE m4v raw MPEG4 video format > > D matroska Matroska file format > > DE mjpeg MJPEG video > > E mov mov format > > D mov,mp4,m4a,3gp,3g2 QuickTime/MPEG4 format > > E mp2 MPEG audio layer 2 > > D mp3 MPEG audio > > E mp4 mp4 format > > DE mpeg MPEG1 System format > > E mpeg1video MPEG video > > E mpeg2video MPEG2 video > > DE mpegts MPEG2 transport stream format > > D mpegvideo MPEG video > > E mpjpeg Mime multipart JPEG format > > DE mulaw pcm mu law format > > D nsv NullSoft Video format > > E null null video format > > DE nut nut format > > D ogg Ogg > > E psp psp mp4 format > > D psxstr Sony Playstation STR format > > DE rawvideo raw video format > > D redir Redirector format > > DE rm rm format > > E rtp RTP output format > > D rtsp RTSP input format > > DE s16be pcm signed 16 bit big endian format > > DE s16le pcm signed 16 bit little endian format > > DE s8 pcm signed 8 bit format > > D sdp SDP > > D shn raw shn > > E singlejpeg single JPEG image > > D sol Sierra SOL Format > > E svcd MPEG2 PS format (VOB) > > DE swf Flash format > > DE u16be pcm unsigned 16 bit big endian format > > DE u16le pcm unsigned 16 bit little endian format > > DE u8 pcm unsigned 8 bit format > > E vcd MPEG1 System format (VCD) > > D vmd Sierra VMD format > > E vob MPEG2 PS format (VOB) > > DE wav wav format > > D wc3movie Wing Commander III movie format > > D wsaud Westwood Studios audio format > > D wsvqa Westwood Studios VQA format > > DE yuv4mpegpipe YUV4MPEG pipe format > > > > Image formats (filename extensions, if any, follow): > > DE gif gif > > > > Codecs: > > D V 4xm > > D V D 8bps > > D V D aasc > > EA ac3 > > DEA adpcm_4xm > > DEA adpcm_adx > > DEA adpcm_ct > > DEA adpcm_ea > > DEA adpcm_ima_dk3 > > DEA adpcm_ima_dk4 > > DEA adpcm_ima_qt > > DEA adpcm_ima_smjpeg > > DEA adpcm_ima_wav > > DEA adpcm_ima_ws > > DEA adpcm_ms > > DEA adpcm_swf > > DEA adpcm_xa > > D A alac > > DEV D asv1 > > DEV D asv2 > > D V D camtasia > > D V D cinepak > > D V D cljr > > D V D cyuv > > DEV D dvvideo > > DEV D ffv1 > > DEVSD ffvhuff > > D A flac > > D V D flic > > DEVSD flv > > DEA g726 > > DEV D h261 > > DEVSDT h263 > > D VSD h263i > > EV h263p > > D V DT h264 > > DEVSD huffyuv > > D V D idcinvideo > > D V D indeo2 > > D V indeo3 > > D A interplay_dpcm > > D V D interplayvideo > > EV ljpeg > > D V D loco > > D A mace3 > > D A mace6 > > D V D mdec > > DEV D mjpeg > > D V D mjpegb > > DEA mp2 > > D A mp3 > > D A mp3adu > > D A mp3on4 > > DEVSDT mpeg1video > > DEVSDT mpeg2video > > DEVSDT mpeg4 > > D VSDT mpegvideo > > DEVSD msmpeg4 > > DEVSD msmpeg4v1 > > DEVSD msmpeg4v2 > > D V D msrle > > D V D msvideo1 > > D V D mszh > > DEV pam > > DEV pbm > > DEA pcm_alaw > > DEA pcm_mulaw > > DEA pcm_s16be > > DEA pcm_s16le > > DEA pcm_s8 > > DEA pcm_u16be > > DEA pcm_u16le > > DEA pcm_u8 > > DEV pgm > > DEV pgmyuv > > DEV png > > DEV ppm > > D V D qdraw > > D V D qpeg > > D V D qtrle > > DEV rawvideo > > D A real_144 > > D A real_288 > > D A roq_dpcm > > D V D roqvideo > > D V D rpza > > DEV D rv10 > > DEV D rv20 > > D A shorten > > D V D smc > > DEV snow > > D A sol_dpcm > > DEA sonic > > EA sonicls > > D V D sp5x > > DEV D svq1 > > D VSD svq3 > > D V theora > > D V D truemotion1 > > D V D ultimotion > > D V vc9 > > D V D vcr1 > > D A vmdaudio > > D V D vmdvideo > > D V vp3 > > D V D vqavideo > > D A wmav1 > > D A wmav2 > > DEVSD wmv1 > > DEVSD wmv2 > > D V wmv3 > > D V D wnv1 > > D A ws_snd1 > > D A xan_dpcm > > D V D xan_wc3 > > D V D xl > > DEV D zlib > > > > Supported file protocols: > > file: pipe: udp: rtp: tcp: http: > > Frame size, frame rate abbreviations: > > ntsc pal qntsc qpal sntsc spal film ntsc-film sqcif qcif cif 4cif > > Motion estimation methods: > > zero(fastest) full(slowest) log phods epzs(default) x1 > > > > Note, the names of encoders and decoders dont always match, > so there are > > several cases where the above table shows encoder only or > decoder only > > entries > > even though both encoding and decoding are supported for > example, the > > h263 > > decoder corresponds to the h263 and h263p encoders, for > file formats its > > even > > worse > > > > Ave Wrigley > > Head of New Media Development, ITN > > 200 Grays Inn Rd, tel:+44-20-7430-4719 > > London WC1X 8XZ, mobile:+44-7713-986247 > > United Kingdom mailto:ave.wrigley at itn.co.uk > > > > This email (and any attachments) is intended solely for the > individual(s) > > to whom addressed. > > It may contain confidential and/or legally privileged information. > > Any statement or opinions therein are not necessarily those > of ITN unless specifically stated. > > Any unauthorised use, disclosure or copying is prohibited. > > If you have received this email in error, please notify the > sender and delete it from your system. > > Security and reliability of the e-mail and attachments are > not guaranteed. > > You must take full responsibility for virus checking. > > > > Please note that to ensure regulatory compliance and for > the protection of our clients and business, > > we may monitor and read e-mails sent to and from our server(s). > > > > Independent Television News Limited, > > > > Registered No. 548648 England, > > > > VAT Reg. No: GB 756 2995 81, > > > > 200 Gray's Inn Road, London WC1X 8XZ, > > > > Telephone: 020 7833 3000. > > > > _______________________________________________ > > ffmpeg-user mailing list > > ffmpeg-user at mplayerhq.hu > > http://mplayerhq.hu/mailman/listinfo/ffmpeg-user > > > > _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user at mplayerhq.hu > http://mplayerhq.hu/mailman/listinfo/ffmpeg-user > > This email (and any attachments) is intended solely for the individual(s) to whom addressed. It may contain confidential and/or legally privileged information. Any statement or opinions therein are not necessarily those of ITN unless specifically stated. Any unauthorised use, disclosure or copying is prohibited. If you have received this email in error, please notify the sender and delete it from your system. Security and reliability of the e-mail and attachments are not guaranteed. You must take full responsibility for virus checking. Please note that to ensure regulatory compliance and for the protection of our clients and business, we may monitor and read e-mails sent to and from our server(s). Independent Television News Limited, Registered No. 548648 England, VAT Reg. No: GB 756 2995 81, 200 Gray's Inn Road, London WC1X 8XZ, Telephone: 020 7833 3000.

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How do I set the encode frame rate?
by pfraser＠covad.net 09 May '05

09 May '05

I am using FFMpeg for simulation. The input is a series of 1024 x 768 jpegs, and I am making them into an MPEG2 file. I can't work out how to change the frame rate to something that isn't in Table 6-4. If I use: ffmpeg -r 24 -i .\1\jpg\flight_sim%3d.jpg -b 8000 -me zero -y test.mpg everything works fine, but if I use: ffmpeg -r 12 -i .\1\jpg\flight_sim%3d.jpg -b 8000 -me zero -y test.mpg I get: [mpeg1video @ 006E2720]MPEG1/2 does not support 12/1 fps What am I doing wrong? If there is an argument to set frame_rate_extension_n and frame_rate_extension_d I can't find it. Thanks

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