September 2012 - FFmpeg-trac - lists.ffmpeg.org

#317(undetermined:new): mpeg4 (geov & geox fouccs) needs to be flipped
by FFmpeg 24 Aug '13

24 Aug '13

#317: mpeg4 (geov & geox fouccs) needs to be flipped --------------------------+-------------------------- Reporter: ami_stuff | Type: defect Status: new | Priority: normal Component: undetermined | Version: unspecified Keywords: | Blocked By: Blocking: | Reproduced: 0 Analyzed: 0 | --------------------------+-------------------------- http://samples.mplayerhq.hu/V-codecs/geov.avi https://trac.videolan.org/vlc/ticket/3615 {{{ C:\>ffmpeg -i geov.avi ffmpeg version N-30956-g81ef892, Copyright (c) 2000-2011 the FFmpeg developers built on Jun 22 2011 17:34:15 with gcc 4.5.3 configuration: --enable-gpl --enable-version3 --enable-memalign-hack --enable- runtime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-libo pencore-amrnb --enable-libopencore-amrwb --enable-libfreetype --enable- libgsm -- enable-libmp3lame --enable-libopenjpeg --enable-librtmp --enable- libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enabl e-libx264 --enable-libxavs --enable-libxvid --enable-zlib libavutil 51. 9. 1 / 51. 9. 1 libavcodec 53. 7. 0 / 53. 7. 0 libavformat 53. 4. 0 / 53. 4. 0 libavdevice 53. 1. 1 / 53. 1. 1 libavfilter 2. 23. 0 / 2. 23. 0 libswscale 2. 0. 0 / 2. 0. 0 libpostproc 51. 2. 0 / 51. 2. 0 [avi @ 01E5A600] Something went wrong during header parsing, I will ignore it an d try to continue anyway. [mpeg4 @ 01E5AB00] hmm, seems the headers are not complete, trying to guess time _increment_bits [mpeg4 @ 01E5AB00] my guess is 5 bits ;) [avi @ 01E5A600] Could not find codec parameters (Subtitle: [0][0][0][0] / 0x000 0) Input #0, avi, from 'geov.avi': Duration: 00:00:03.03, start: 0.000000, bitrate: 1374 kb/s Stream #0.0: Video: mpeg4, yuv420p, 720x240, 30 fps, 30 tbr, 30 tbn, 30 tbc Stream #0.1: Subtitle: [0][0][0][0] / 0x0000 At least one output file must be specified }}} -- Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/317> FFmpeg <http://ffmpeg.org> FFmpeg issue tracker

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#259(undetermined:new): framerate detection does not work properly.
by FFmpeg 24 Aug '13

24 Aug '13

#259: framerate detection does not work properly. ---------------------------------------+-------------------------- Reporter: mbosner | Type: defect Status: new | Priority: normal Component: undetermined | Version: unspecified Keywords: false framerate detection | Blocked By: Blocking: | Reproduced: 0 Analyzed: 0 | ---------------------------------------+-------------------------- Frameratedetection does not work well on some of my files: ffmpeg -i wrong_framerate.mkv: [matroska,webm @ 0x276e420] Estimating duration from bitrate, this may be inaccurate Input #0, matroska,webm, from 'wrong_framerate.mkv': Duration: 01:47:42.18, start: 0.000000, bitrate: 1984 kb/s Stream #0.0: Video: vc1 (Advanced), yuv420p, 1920x1080 [PAR 1:1 DAR 16:9], 29.97 fps, 29.97 tbr, 1k tbn, 29.97 tbc (default) Stream #0.1: Audio: eac3, 48000 Hz, 5.1, s16, 1536 kb/s (default) Stream #0.2: Audio: eac3, 48000 Hz, 5.1, s16, 448 kb/s At least one output file must be specified ffmpeg version: git-N-30444-geb5a3ab correct framerate: 23.98/24 fps same false framerate detection with latest VLC xbmc does play it with the correct framerate and does play it without problems. -- Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/259> FFmpeg <http://ffmpeg.org> FFmpeg issue tracker

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#914(undetermined:new): tiff: reject (later support) "quadric surfaces"
by FFmpeg 22 Aug '13

22 Aug '13

#914: tiff: reject (later support) "quadric surfaces" -------------------------------------+------------------------------------- Reporter: ami_stuff | Type: defect Status: new | Priority: normal Component: | Version: undetermined | unspecified Keywords: | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- quad-lzw.tif 512x384 8-bit RGB (lzw) "quadric surfaces" {{{ C:\>ffmpeg -i quad-lzw.tif out.bmp ffmpeg version N-36635-gceb0dd9 Copyright (c) 2000-2012 the FFmpeg developers built on Jan 9 2012 17:39:58 with gcc 4.6.2 configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-ru ntime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable- libope ncore-amrnb --enable-libopencore-amrwb --enable-libfreetype --enable- libgsm --en able-libmp3lame --enable-libopenjpeg --enable-librtmp --enable- libschroedinger - -enable-libspeex --enable-libtheora --enable-libvo-aacenc --enable-libvo- amrwben c --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable- libxvid --enable-zlib libavutil 51. 34.100 / 51. 34.100 libavcodec 53. 54.100 / 53. 54.100 libavformat 53. 29.100 / 53. 29.100 libavdevice 53. 4.100 / 53. 4.100 libavfilter 2. 58.100 / 2. 58.100 libswscale 2. 1.100 / 2. 1.100 libswresample 0. 6.100 / 0. 6.100 libpostproc 51. 2.100 / 51. 2.100 [tiff @ 02645B60] Decoded only 3 bytes of 1536 Input #0, image2, from 'quad-lzw.tif': Duration: 00:00:00.04, start: 0.000000, bitrate: N/A Stream #0:0: Video: tiff, rgb24, 512x384, 25 tbr, 25 tbn, 25 tbc Incompatible pixel format 'rgb24' for codec 'bmp', auto-selecting format 'bgr24' [buffer @ 020F1760] w:512 h:384 pixfmt:rgb24 tb:1/1000000 sar:0/1 sws_param: [buffersink @ 020F19E0] auto-inserting filter 'auto-inserted scale 0' between th e filter 'src' and the filter 'out' [scale @ 020F1E60] w:512 h:384 fmt:rgb24 -> w:512 h:384 fmt:bgr24 flags:0x4 Output #0, image2, to 'out.bmp': Metadata: encoder : Lavf53.29.100 Stream #0:0: Video: bmp, bgr24, 512x384, q=2-31, 200 kb/s, 90k tbn, 25 tbc Stream mapping: Stream #0:0 -> #0:0 (tiff -> bmp) Press [q] to stop, [?] for help [tiff @ 02645B60] Decoded only 3 bytes of 1536 frame= 1 fps= 0 q=0.0 Lsize= 0kB time=00:00:00.04 bitrate= 0.0kbits/ s video:576kB audio:0kB global headers:0kB muxing overhead -100.000000% }}} -- Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/914> FFmpeg <http://ffmpeg.org> FFmpeg issue tracker

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#625(undetermined:new): support 2/3/5bit IMA ADPCM
by FFmpeg 22 Aug '13

22 Aug '13

#625: support 2/3/5bit IMA ADPCM -------------------------------------+------------------------------------- Reporter: ami_stuff | Type: Status: new | enhancement Component: | Priority: normal undetermined | Version: Keywords: | unspecified Blocking: | Blocked By: Analyzed by developer: 0 | Reproduced by developer: 0 -------------------------------------+------------------------------------- (issue 1598) {{{ C:\>ffmpeg -i IMAADPCM_2bits.wav ffmpeg version N-34318-g8475ec1, Copyright (c) 2000-2011 the FFmpeg developers built on Oct 31 2011 17:50:05 with gcc 4.6.1 configuration: --enable-gpl --enable-version3 --enable-runtime-cpudetect --ena ble-avisynth --enable-bzlib --enable-frei0r --enable-libopencore-amrnb --enable- libopencore-amrwb --enable-libfreetype --enable-libgsm --enable-libmp3lame --ena ble-libopenjpeg --enable-librtmp --enable-libschroedinger --enable- libspeex --en able-libtheora --enable-libvo-aacenc --enable-libvo-amrwbenc --enable- libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib libavutil 51. 22. 0 / 51. 22. 0 libavcodec 53. 26. 0 / 53. 26. 0 libavformat 53. 18. 0 / 53. 18. 0 libavdevice 53. 4. 0 / 53. 4. 0 libavfilter 2. 45. 3 / 2. 45. 3 libswscale 2. 1. 0 / 2. 1. 0 libpostproc 51. 2. 0 / 51. 2. 0 [adpcm_ima_wav @ 020A90C0] Only 4-bit ADPCM IMA WAV files are supported [wav @ 020A2320] parser not found for codec adpcm_ima_wav, packets or times may be invalid. [adpcm_ima_wav @ 020A90C0] Only 4-bit ADPCM IMA WAV files are supported Last message repeated 26 times [wav @ 020A2320] Could not find codec parameters (Audio: adpcm_ima_wav ([17][0][ 0][0] / 0x0011), 44100 Hz, 2 channels, 352 kb/s) IMAADPCM_2bits.wav: could not find codec parameters }}} -- Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/625> FFmpeg <http://ffmpeg.org> FFmpeg issue tracker

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#449(undetermined:new): ALSA, as a first input, together with -isync gives error "[alsa @ 0x97ddae0] cannot set parameters (Connection timed out)"
by FFmpeg 21 Aug '13

21 Aug '13

#449: ALSA, as a first input, together with -isync gives error "[alsa @ 0x97ddae0] cannot set parameters (Connection timed out)" -------------------------------------+------------------------------------- Reporter: burek | Type: defect Status: new | Priority: normal Component: | Version: undetermined | unspecified Keywords: | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- This works: {{{ # ffmpeg -isync -f video4linux2 -r 15 -s qqvga -i /dev/video0 -f alsa -ac 1 -i hw:1 -vcodec libx264 -preset ultrafast -g 15 -crf 20 -acodec aac -strict experimental -ar 44100 -ab 96k -ac 1 -f mpegts udp://192.168.25.101:10001 ffmpeg version N-32427-g22bf6f7, Copyright (c) 2000-2011 the FFmpeg developers built on Sep 10 2011 06:14:04 with gcc 4.6.1 configuration: --enable-static --enable-shared --enable-gpl --enable- nonfree --enable-postproc --enable-runtime-cpudetect --enable-libx264 --enable-libaacplus --extra-cflags=-fPIC WARNING: library configuration mismatch postproc configuration: --extra-version=4:0.6.2-5 --arch=i386 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libsp eex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable- vaapi --enable-libopenjpeg --enable-gpl --enable-postproc --e nable-swscale --enable-x11grab --enable-libfaad --enable-libdirac --enable-libfaad --enable-libmp3lame --enable-librtmp --enable-libx264 --enable-libxvid --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cp u=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay libavutil 51. 16. 0 / 51. 16. 0 libavcodec 53. 13. 0 / 53. 13. 0 libavformat 53. 12. 0 / 53. 12. 0 libavdevice 53. 3. 0 / 53. 3. 0 libavfilter 2. 39. 0 / 2. 39. 0 libswscale 2. 1. 0 / 2. 1. 0 libpostproc 51. 2. 0 / 51. 2. 0 [video4linux2 @ 0x998fb00] Estimating duration from bitrate, this may be inaccurate Input #0, video4linux2, from '/dev/video0': Duration: N/A, start: 7618.708052, bitrate: 4608 kb/s Stream #0.0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 160x120, 4608 kb/s, 15 tbr, 1000k tbn, 15 tbc [alsa @ 0x99906e0] Estimating duration from bitrate, this may be inaccurate Input #1, alsa, from 'hw:1': Duration: N/A, start: 1315632754.420454, bitrate: N/A Stream #1.0: Audio: pcm_s16le, 16000 Hz, 1 channels, s16, 256 kb/s Incompatible pixel format 'yuyv422' for codec 'libx264', auto-selecting format 'yuv420p' [buffer @ 0x999ab20] w:160 h:120 pixfmt:yuyv422 tb:1/1000000 sar:0/1 sws_param: [buffersink @ 0x999abc0] auto-inserting filter 'auto-inserted scaler 0' between the filter 'src' and the filter 'out' [scale @ 0x99961e0] w:160 h:120 fmt:yuyv422 -> w:160 h:120 fmt:yuv420p flags:0x4 [libx264 @ 0x998b7c0] using cpu capabilities: MMX2 SSE2 Cache64 [libx264 @ 0x998b7c0] profile Constrained Baseline, level 1.0 [mpegts @ 0x998b040] muxrate VBR, pcr every 1 pkts, sdt every 200, pat/pmt every 40 pkts Output #0, mpegts, to 'udp://192.168.25.101:10001': Metadata: encoder : Lavf53.12.0 Stream #0.0: Video: h264, yuv420p, 160x120, q=-1--1, 90k tbn, 15 tbc Stream #0.1: Audio: aac, 44100 Hz, 1 channels, s16, 96 kb/s Stream mapping: Stream #0.0 -> #0.0 (rawvideo -> libx264) Stream #1.0 -> #0.1 (pcm_s16le -> aac) Press [q] to stop, [?] for help frame= 288 fps= 17 q=24.0 Lsize= 604kB time=00:00:17.20 bitrate= 287.6kbits/s dup=30 drop=0 video:324kB audio:188kB global headers:0kB muxing overhead 17.897995% frame I:20 Avg QP:15.81 size: 5393 [libx264 @ 0x998b7c0] frame P:268 Avg QP:18.68 size: 835 [libx264 @ 0x998b7c0] mb I I16..4: 100.0% 0.0% 0.0% [libx264 @ 0x998b7c0] mb P I16..4: 0.5% 0.0% 0.0% P16..4: 60.0% 0.0% 0.0% 0.0% 0.0% skip:39.5% [libx264 @ 0x998b7c0] coded y,uvDC,uvAC intra: 90.5% 95.0% 86.3% inter: 26.5% 48.7% 14.6% [libx264 @ 0x998b7c0] i16 v,h,dc,p: 40% 25% 20% 15% [libx264 @ 0x998b7c0] i8c dc,h,v,p: 49% 7% 30% 13% [libx264 @ 0x998b7c0] kb/s:138.22 }}} This doesn't work (just switched places for audio and video input): {{{ # ffmpeg -isync -f alsa -ac 1 -i hw:1 -f video4linux2 -r 15 -s qqvga -i /dev/video0 -vcodec libx264 -preset ultrafast -g 15 -crf 20 -acodec aac -strict experimental -ar 44100 -ab 96k -ac 1 -f mpegts udp://192.168.25.101:10001 ffmpeg version N-32427-g22bf6f7, Copyright (c) 2000-2011 the FFmpeg developers built on Sep 10 2011 06:14:04 with gcc 4.6.1 configuration: --enable-static --enable-shared --enable-gpl --enable- nonfree --enable-postproc --enable-runtime-cpudetect --enable-libx264 --enable-libaacplus --extra-cflags=-fPIC WARNING: library configuration mismatch postproc configuration: --extra-version=4:0.6.2-5 --arch=i386 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable- vaapi --enable-libopenjpeg --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libfaad --enable-libdirac --enable-libfaad --enable-libmp3lame --enable-librtmp --enable-libx264 --enable-libxvid --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable- shared --disable-static --disable-ffmpeg --disable-ffplay libavutil 51. 16. 0 / 51. 16. 0 libavcodec 53. 13. 0 / 53. 13. 0 libavformat 53. 12. 0 / 53. 12. 0 libavdevice 53. 3. 0 / 53. 3. 0 libavfilter 2. 39. 0 / 2. 39. 0 libswscale 2. 1. 0 / 2. 1. 0 libpostproc 51. 2. 0 / 51. 2. 0 [alsa @ 0x8303ae0] cannot set parameters (Connection timed out) hw:1: Input/output error }}} -- Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/449> FFmpeg <http://ffmpeg.org> FFmpeg issue tracker

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#450(documentation:new): Specify the position of -isync more precisely
by FFmpeg 21 Aug '13

21 Aug '13

#450: Specify the position of -isync more precisely -------------------------------------+------------------------------------- Reporter: burek | Owner: stefano Type: | Status: new enhancement | Component: Priority: normal | documentation Version: | Keywords: unspecified | Blocking: Blocked By: | Analyzed by developer: 0 Reproduced by developer: 0 | -------------------------------------+------------------------------------- I've figured that the -isync option does not produce the same effect when placed in front of inputs, between the inputs and after the inputs. I just think it would be a good idea to put a little explanation in the documentation about the proper usage of that option. For example, these 2 examples produce different results: ffmpeg -f alsa -ac 1 -i hw:1 -isync -f video4linux2 -r 15 -s qqvga -i /dev/video0 -vcodec libx264 -preset ultrafast -g 15 -crf 20 -acodec aac -strict experimental -ar 44100 -ab 96k -ac 1 -f mpegts udp://192.168.25.101:10001 ffmpeg -f alsa -ac 1 -i hw:1 -f video4linux2 -r 15 -s qqvga -i /dev/video0 -isync -vcodec libx264 -preset ultrafast -g 15 -crf 20 -acodec aac -strict experimental -ar 44100 -ab 96k -ac 1 -f mpegts udp://192.168.25.101:10001 (the second example has -isync moved after the 2nd input) -- Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/450> FFmpeg <http://ffmpeg.org> FFmpeg issue tracker

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#679(undetermined:new): DVB subtitles are badly placed on the screen
by FFmpeg 18 Aug '13

18 Aug '13

#679: DVB subtitles are badly placed on the screen -------------------------------------+------------------------------------- Reporter: cehoyos | Owner: Type: defect | Status: new Priority: normal | Component: Version: git- | undetermined master | Keywords: dvbsub Blocked By: | mpegts Reproduced by developer: 0 | Blocking: | Analyzed by developer: 0 -------------------------------------+------------------------------------- Attached sample shows subtitles too far right on the screen so that a part cannot be read. mplayer -demuxer mpegts -sid 593 and mplayer -demuxer lavf -sid 0 show the subtitle at the right position in the center of the screen (but cuts away the upper half). {{{ $ ffmpeg -i subtitles.ts ffmpeg version N-35086-g530a540, Copyright (c) 2000-2011 the FFmpeg developers built on Nov 23 2011 00:29:45 with gcc 4.5.3 configuration: --cc='/usr/local/gcc-4.5.3/bin/gcc -m32' libavutil 51. 26. 0 / 51. 26. 0 libavcodec 53. 36. 0 / 53. 36. 0 libavformat 53. 21. 0 / 53. 21. 0 libavdevice 53. 4. 0 / 53. 4. 0 libavfilter 2. 49. 0 / 2. 49. 0 libswscale 2. 1. 0 / 2. 1. 0 [mpeg2video @ 0x8dac120] mpeg_decode_postinit() failure Last message repeated 10 times [mpegts @ 0x8d93a80] max_analyze_duration 5000000 reached at 5016000 [NULL @ 0x8db0420] start time is not set in estimate_timings_from_pts [NULL @ 0x8dd06c0] start time is not set in estimate_timings_from_pts [NULL @ 0x8dd6780] start time is not set in estimate_timings_from_pts [NULL @ 0x8ddca00] start time is not set in estimate_timings_from_pts [NULL @ 0x8de2c80] start time is not set in estimate_timings_from_pts [mpegts @ 0x8d93a80] PES packet size mismatch Input #0, mpegts, from 'subtitles.ts': Duration: 00:00:09.17, start: 11318.457333, bitrate: 2233 kb/s Program 8270 Metadata: service_name : ITV1 service_provider: ITV Program 8325 Metadata: service_name : ITV2 service_provider: ITV Program 8634 Metadata: service_name : Rabbit service_provider: Teletext Limited Program 8384 Metadata: service_name : Channel 4 service_provider: Channel 4 TV Program 8448 Metadata: service_name : E4 service_provider: Channel 4 TV Program 8442 Metadata: service_name : More 4 service_provider: Channel 4 TV Stream #0:0[0x24e]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p, 544x576 [SAR 32:17 DAR 16:9], 15000 kb/s, 26.80 fps, 25 tbr, 90k tbn, 50 tbc Stream #0:1[0x24f](eng): Audio: mp2 ([4][0][0][0] / 0x0004), 48000 Hz, stereo, s16, 192 kb/s Stream #0:2[0x250](eng): Audio: mp3 ([4][0][0][0] / 0x0004), 0 channels, s16 (visual impaired) Stream #0:3[0x251](eng): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006) Stream #0:4[0x84f]: Unknown: none ([11][0][0][0] / 0x000B) Stream #0:5[0x911]: Unknown: none ([11][0][0][0] / 0x000B) Stream #0:6[0x912]: Unknown: none ([11][0][0][0] / 0x000B) Stream #0:7[0xbbb]: Unknown: none ([11][0][0][0] / 0x000B) Program 8452 Metadata: service_name : Channel 4+1 service_provider: Channel 4 TV Program 8577 Metadata: service_name : Gay Rabbit service_provider: Teletext Limited Program 8500 Metadata: service_name : Channel 5 service_provider: five Program 8370 Metadata: service_name : ITV1 +1 service_provider: ITV At least one output file must be specified }}} -- Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/679> FFmpeg <http://ffmpeg.org> FFmpeg issue tracker

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#500(undetermined:new): Seemingly inconsistent AVIndexEntry timestamps for movs starting with B-Frames
by FFmpeg 09 Aug '13

09 Aug '13

#500: Seemingly inconsistent AVIndexEntry timestamps for movs starting with B-Frames -------------------------------------+------------------------------------- Reporter: rmk | Type: defect Status: new | Priority: normal Component: | Version: undetermined | unspecified Keywords: | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- A while ago I asked on the ml regarding the semantics of the undocumented fields of AVIndexEntry defined in avformat.h (http://www.mail-archive.com /libav-user(a)ffmpeg.org/msg00535.html) I didn't get an answer so I still do not know what the correct behaviour is but I have observed things that at least appear inconsistent. I have two examples of MPEG-2 files in a mov container which both start with the sequence BBI (presentation order). One is the file that is attached to issue #479 that has the following properties: Mesht0456_01_cut.MP4 AVStream.time_base = 1/30000 AVStream.start_time = 3003 (0.1001s) start frame order = BBI PTS of first I-Frame = 3003 PTS of first frame (B) = 0 first I-frame AVIndexEntry.timestamp = 0 Then another one (uploaded to http://www.datafilehost.com/download- 27d635cc.html since I do not have a smaller sample): xdcam_hd422_1080p24.mov AVStream.time_base = 1/2400 AVStream.start_time = 200 (0.08333333333333334s) start frame order = BBI PTS of first I-Frame = 200 PTS of first frame (B) = 0 first I-frame AVIndexEntry.timestamp = -100 (-0.416666666666667s) The first sample looks like AVIndexEntry.timestamp is set with the stream's start_time subtracted from the respective frame's PTS. This also works for all following index entries. However, this does not work for the second example. I have no idea if this is related to issue #479. All I'm trying to do is use the index (if it is there) to find out the PTSs of keyframes and I thought that was OK to do via AVIndexEntry. So either I am abusing the API and it would help to document this so others don't run into this or one of the files is broken or it is indeed a bug. In any case, just a short, unambiguous sentence of documentation for each AVIndexEntry field by someone who knows the semantics would help libav API users a great deal to use this and to help improve the seeking functionality of ffmpeg be it only by providing bug reports with samples. One more observation is that in both cases the timestamp of the index entry corresponding to the first I frame matches the DTS of the packet containing the I-Frame. Is that the semantics of AVIndexEntry.timestamp? In that case how would one derive the PTS of the I-frame from the index entry? Any insight/help would be greatly appreciated. -- Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/500> FFmpeg <http://ffmpeg.org> FFmpeg issue tracker

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#1438(FFmpeg:new): problems with using -ss option when transcoding from *.vob to *.avi
by FFmpeg 31 Jul '13

31 Jul '13

#1438: problems with using -ss option when transcoding from *.vob to *.avi -------------------------------------+------------------------------------- Reporter: | Type: defect superandrzej | Priority: normal Status: new | Version: Component: FFmpeg | unspecified Keywords: | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- I am trying to transcode from *.vob to *.avi. As long as I don't use -ss option everything works as expected. With -ss option ffmpeg exits with following error: [ac3 @ 0xa0c75a0] frame sync error Error while decoding stream #0:9 [mpeg @ 0xa0133c0] Adjusting PTS forward Last message repeated 27 times frame= 0 fps=0.0 q=0.0 Lsize= 27kB time=00:-17:-25.-89 bitrate= -0.2kbits/s dup=0 drop=7 video:0kB audio:16kB global headers:0kB muxing overhead 65.411932% The command line that I use is: ffmpeg -ss 0:17:47 -t 01:28:48.4 -i '/A/film.vob' '/A/film.avi' The information about input file: -> ffmpeg -v 9 -loglevel 99 -i '/A/film.vob' ffmpeg version 0.11.1 Copyright (c) 2000-2012 the FFmpeg developers built on Jun 9 2012 00:17:30 with gcc 4.6.2 configuration: --cpu=i686 --prefix=/usr --disable-static --enable-shared --enable-gpl --enable-version3 --disable-ffserver --enable-x11grab --disable--amrnb --enable-libopencore-amrwb --enable-libmp3lame --enable- libtheora libavutil 51. 54.100 / 51. 54.100 libavcodec 54. 23.100 / 54. 23.100 libavformat 54. 6.100 / 54. 6.100 libavdevice 54. 0.100 / 54. 0.100 libavfilter 2. 77.100 / 2. 77.100 libswscale 2. 1.100 / 2. 1.100 libswresample 0. 15.100 / 0. 15.100 libpostproc 52. 0.100 / 52. 0.100 [mpeg @ 0x906f3c0] Format mpeg probed with size=8192 and score=52 [mpeg @ 0x906f3c0] File position before avformat_find_stream_info() is 0 [mpeg @ 0x906f3c0] probing stream 0 pp:2500 [mpeg @ 0x906f3c0] Probe with size=2012, packets=1 detected mpegvideo with score=25 [mpeg @ 0x906f3c0] probing stream 0 pp:2499 [mpeg @ 0x906f3c0] Probe with size=4037, packets=2 detected mpegvideo with score=25 [mpeg @ 0x906f3c0] probing stream 0 pp:2498 [mpeg @ 0x906f3c0] Probe with size=6062, packets=3 detected mpegvideo with score=25 [mpeg @ 0x906f3c0] probing stream 0 pp:2497 [mpeg @ 0x906f3c0] probing stream 0 pp:2496 [mpeg @ 0x906f3c0] Probe with size=10112, packets=5 detected mpegvideo with score=51 [mpeg @ 0x906f3c0] probed stream 0 [mpeg @ 0x906f3c0] first_dts 22254 not matching first dts 29454 in que Last message repeated 3 times [mpeg @ 0x906f3c0] first_dts 22254 not matching first dts 47454 in que Last message repeated 2 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 31614 in que Last message repeated 1 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 34494 in que Last message repeated 2 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 40254 in que [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 46014 in que Last message repeated 4 times [mpeg @ 0x906f3c0] first_dts 22254 not matching first dts 65454 in que [mpeg @ 0x906f3c0] first_dts 22254 not matching first dts 72654 in que Last message repeated 3 times [mpeg @ 0x906f3c0] first_dts 22254 not matching first dts 90654 in que Last message repeated 2 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 48894 in que [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 54654 in que Last message repeated 1 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 57534 in que Last message repeated 2 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 63294 in que [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 69054 in que Last message repeated 4 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 77694 in que [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 74814 in que [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 83454 in que Last message repeated 4 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 92094 in que Last message repeated 1 times [mpeg @ 0x906f3c0] first_dts 22254 not matching first dts 108654 in que [mpeg @ 0x906f3c0] first_dts 22254 not matching first dts 115854 in que Last message repeated 3 times [mpeg @ 0x906f3c0] first_dts 22254 not matching first dts 133854 in que Last message repeated 2 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 94974 in que Last message repeated 2 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 100734 in que Last message repeated 1 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 106494 in que Last message repeated 4 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 115134 in que Last message repeated 1 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 118014 in que Last message repeated 2 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 123774 in que [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 126654 in que [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 129534 in que Last message repeated 4 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 138174 in que [mpeg @ 0x906f3c0] first_dts 22254 not matching first dts 151854 in que [mpeg @ 0x906f3c0] first_dts 22254 not matching first dts 159054 in que Last message repeated 3 times [mpeg @ 0x906f3c0] first_dts 22254 not matching first dts 177054 in que Last message repeated 2 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 143934 in que Last message repeated 4 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 152574 in que Last message repeated 2 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 155454 in que Last message repeated 2 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 161214 in que [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 166974 in que Last message repeated 4 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 175614 in que Last message repeated 1 times [mpeg @ 0x906f3c0] first_dts 22254 not matching first dts 198654 in que [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 178494 in que Last message repeated 3 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 184254 in que [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 190014 in que Last message repeated 4 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 198654 in que [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 204414 in que Last message repeated 5 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 213054 in que Last message repeated 1 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 215934 in que Last message repeated 2 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 221694 in que [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 227454 in que Last message repeated 4 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 230334 in que [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 236094 in que Last message repeated 1 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 238974 in que Last message repeated 2 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 244734 in que [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 250494 in que Last message repeated 4 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 259134 in que [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 256254 in que [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 264894 in que Last message repeated 4 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 273534 in que Last message repeated 1 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 276414 in que Last message repeated 2 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 282174 in que Last message repeated 1 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 287934 in que Last message repeated 4 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 296574 in que Last message repeated 1 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 299454 in que Last message repeated 2 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 305214 in que [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 308094 in que [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 310974 in que Last message repeated 4 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 319614 in que [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 325374 in que Last message repeated 4 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 334014 in que Last message repeated 2 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 336894 in que Last message repeated 2 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 342654 in que [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 348414 in que Last message repeated 4 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 357054 in que Last message repeated 1 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 359934 in que Last message repeated 3 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 365694 in que [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 371454 in que Last message repeated 4 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 380094 in que [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 385854 in que Last message repeated 5 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 394494 in que Last message repeated 1 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 397374 in que Last message repeated 2 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 403134 in que [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 408894 in que Last message repeated 4 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 411774 in que [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 417534 in que Last message repeated 1 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 420414 in que Last message repeated 2 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 426174 in que [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 431934 in que Last message repeated 4 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 440574 in que [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 437694 in que [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 446334 in que Last message repeated 4 times [mpeg @ 0x906f3c0] first_dts 25854 not matching first dts 454974 in que Last message repeated 1 times [mpeg @ 0x906f3c0] max_analyze_duration 5000000 reached at 5000000 [mpeg @ 0x906f3c0] File position after avformat_find_stream_info() is 0 Input #0, mpeg, from '/A/film.vob': Duration: 00:00:21.02, start: 0.287267, bitrate: -2147483 kb/s Stream #0:0[0x1e0], 127, 1/90000: Video: mpeg2video (Main), yuv420p, 720x576 [SAR 64:45 DAR 16:9], 1/50, 9800 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc Stream #0:1[0x20], 1, 1/90000: Subtitle: dvd_subtitle Stream #0:2[0x21], 1, 1/90000: Subtitle: dvd_subtitle Stream #0:3[0x22], 1, 1/90000: Subtitle: dvd_subtitle Stream #0:4[0x23], 1, 1/90000: Subtitle: dvd_subtitle Stream #0:5[0x24], 1, 1/90000: Subtitle: dvd_subtitle Stream #0:6[0x25], 1, 1/90000: Subtitle: dvd_subtitle Stream #0:7[0x26], 1, 1/90000: Subtitle: dvd_subtitle Stream #0:8[0x27], 1, 1/90000: Subtitle: dvd_subtitle Stream #0:9[0x80], 149, 1/90000: Audio: ac3, 48000 Hz, 5.1(side), s16, 448 kb/s Stream #0:10[0x81], 149, 1/90000: Audio: ac3, 48000 Hz, 5.1(side), s16, 384 kb/s Stream #0:11[0x82], 149, 1/90000: Audio: ac3, 48000 Hz, 5.1(side), s16, 384 kb/s Stream #0:12[0x83], 149, 1/90000: Audio: ac3, 48000 Hz, 5.1(side), s16, 384 kb/s Stream #0:13[0x84], 152, 1/90000: Audio: ac3, 48000 Hz, stereo, s16, 192 kb/s Stream #0:14[0x28], 1, 1/90000: Subtitle: dvd_subtitle Stream #0:15[0x29], 1, 1/90000: Subtitle: dvd_subtitle Stream #0:16[0x2a], 1, 1/90000: Subtitle: dvd_subtitle At least one output file must be specified best regards Andrzej P.S. I've already reported this issue almost 2 years ago. It disappeared from bug reports in ffmpeg but I google it out: http://roundup.libav.org/issue2199 -- Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1438> FFmpeg <http://ffmpeg.org> FFmpeg issue tracker

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#1616(undetermined:new): bad seek in WMV2 file
by FFmpeg 30 Jul '13

30 Jul '13

#1616: bad seek in WMV2 file -------------------------------------+------------------------------------- Reporter: DonMoir | Type: defect Status: new | Priority: normal Component: | Version: undetermined | unspecified Keywords: | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- Sample file: http://sms.pangolin.com/temp/bad_seek_wmv2.wmv (3 mb) If you do ffplay -ss 7 bad_seek_wmv2.wmv it works correctly. But ffplay -ss 8 bad_seek_wmv2.wmv will fail with gray frame. For my app, I see corruption and not gray. VLC has a bit of a problem with it but not as bad. WMP gets it perfect. With the following you will get a gray frame and a warning about first frame is not keyframe. The first frame is a keyframe but maybe not the one it seeked to. ffplay -ss 8 CreaToon3.wmv ffplay version N-43206-gf857465 Copyright (c) 2003-2012 the FFmpeg developers built on Aug 4 2012 16:12:33 with gcc 4.7.1 (GCC) configuration: --disable-static --enable-shared --enable-gpl --enable- version3 --disable-w32threads --enable-runtime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-libass --enable-libcelt --enable-libopencore- amrnb --enable-libopencore-amrwb --enable-libfreetype --enable-libgsm --enable- libmp3lame --enable-libnut --enable-libopenjpeg --enable-librtmp --enable- libschroedinger --enable-libspeex --enable-libtheora --enable-libutvideo --enable-libvo- aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable- libx264 --enable-libxavs --enable-libxvid --enable-zlib libavutil 51. 66.100 / 51. 66.100 libavcodec 54. 49.100 / 54. 49.100 libavformat 54. 22.100 / 54. 22.100 libavdevice 54. 2.100 / 54. 2.100 libavfilter 3. 5.102 / 3. 5.102 libswscale 2. 1.100 / 2. 1.100 libswresample 0. 15.100 / 0. 15.100 libpostproc 52. 0.100 / 52. 0.100 Input #0, asf, from 'CreaToon3.wmv': Metadata: title : CreaToon 3 artist : ANIMANTE BALEARES S.L. copyright : ANIMANTE BALEARES S.L. 2004 WMFSDKVersion : 9.00.00.2980 WMFSDKNeeded : 0.0.0.0000 IsVBR : 0 Duration: 00:00:42.23, start: 0.000000, bitrate: 664 kb/s Stream #0:0(spa): Audio: wmav2 (a[1][0][0] / 0x0161), 44100 Hz, 1 channels, s16, 20 kb/s Stream #0:1(spa): Video: wmv2 (WMV2 / 0x32564D57), yuv420p, 640x480, 671 kb/ s, 25 tbr, 1k tbn, 1k tbc [asf @ 012a04a0] ignoring invalid packet_obj_size (15 116 116 310) [asf @ 012a04a0] freeing incomplete packet size 310, new 1580 1344327525.2[wmv2 @ 012a7060] 2 warning: '''first frame is no keyframe''' Frame changed from size:0x0 to size:640x480q= 0B f=0/0 29.51 A-V: 0.186 fd= 163 aq= 5KB vq= 83KB sq= 0B f=0/0 -- Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1616> FFmpeg <http://ffmpeg.org> FFmpeg issue tracker

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