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

#538(avcodec:new): J2K files with 444p are incorrectly written
by FFmpeg 24 Aug '13

24 Aug '13

#538: J2K files with 444p are incorrectly written --------------------------------------+--------------------------------- Reporter: cehoyos | Owner: Type: defect | Status: new Priority: normal | Component: avcodec Version: git-master | Keywords: Blocked By: | Blocking: Reproduced by developer: 0 | Analyzed by developer: 0 --------------------------------------+--------------------------------- Files written with yuv444p cannot be read. {{{ ./ffmpeg -i tests/lena.pnm -pix_fmt yuv444p -strict experimental out.jp2 ffmpeg version N-33430-gcb50ada, Copyright (c) 2000-2011 the FFmpeg developers built on Oct 9 2011 20:28:29 with gcc 4.5.3 configuration: --cc=/usr/local/gcc-4.5.3/bin/gcc libavutil 51. 20. 1 / 51. 20. 1 libavcodec 53. 19. 1 / 53. 19. 1 libavformat 53. 14. 0 / 53. 14. 0 libavdevice 53. 4. 0 / 53. 4. 0 libavfilter 2. 43. 6 / 2. 43. 6 libswscale 2. 1. 0 / 2. 1. 0 Input #0, image2, from 'tests/lena.pnm': Duration: 00:00:00.04, start: 0.000000, bitrate: N/A Stream #0:0: Video: ppm, rgb24, 256x256, 25 tbr, 25 tbn, 25 tbc [buffer @ 0x12d9e20] w:256 h:256 pixfmt:rgb24 tb:1/1000000 sar:0/1 sws_param: [buffersink @ 0x12cf7e0] auto-inserting filter 'auto-inserted scale 0' between the filter 'src' and the filter 'out' [scale @ 0x12d0000] w:256 h:256 fmt:rgb24 -> w:256 h:256 fmt:yuv444p flags:0x4 Output #0, image2, to 'out.jp2': Metadata: encoder : Lavf53.14.0 Stream #0:0: Video: j2k, yuv444p, 256x256, q=2-31, 200 kb/s, 90k tbn, 25 tbc Stream mapping: Stream #0.0 -> #0.0 (ppm -> j2k) Press [q] to stop, [?] for help frame= 1 fps= 0 q=0.0 Lsize= -0kB time=00:00:00.04 bitrate= -4.4kbits/s video:89kB audio:0kB global headers:0kB muxing overhead -100.024241% }}} {{{ /ffmpeg -i out.jp2 ffmpeg version N-33430-gcb50ada, Copyright (c) 2000-2011 the FFmpeg developers built on Oct 9 2011 20:28:29 with gcc 4.5.3 configuration: --cc=/usr/local/gcc-4.5.3/bin/gcc libavutil 51. 20. 1 / 51. 20. 1 libavcodec 53. 19. 1 / 53. 19. 1 libavformat 53. 14. 0 / 53. 14. 0 libavdevice 53. 4. 0 / 53. 4. 0 libavfilter 2. 43. 6 / 2. 43. 6 libswscale 2. 1. 0 / 2. 1. 0 Input #0, image2, from 'out.jp2': Duration: 00:00:00.04, start: 0.000000, bitrate: N/A Stream #0:0: Video: j2k, rgb24, 256x256, 25 tbr, 25 tbn, 25 tbc At least one output file must be specified }}} -- Ticket URL: <https://avcodec.org/trac/ffmpeg/ticket/538> FFmpeg <http://ffmpeg.org> FFmpeg issue tracker

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#162(undetermined:new): Avid AVI Codec - wrong resolution reported by FFmpeg
by FFmpeg 24 Aug '13

24 Aug '13

#162: Avid AVI Codec - wrong resolution reported by FFmpeg --------------------------+-------------------------- Reporter: ami_stuff | Type: defect Status: new | Priority: normal Component: undetermined | Version: unspecified Keywords: | Blocked By: Blocking: | Reproduced: 0 Analyzed: 0 | --------------------------+-------------------------- issue 1494 https://roundup.libav.org/file579/avid.avi {{{ Author: ami_stuff Date: 2009-10-19.18:53:59 Attached file is encoded with "Avid AVI Codec" and have 720x576 resolution, but FFmpeg reports 720x592 and adds black bar on the top of the video. -------- C:\>ffmpeg -i avid.avi FFmpeg version SVN-r20231, Copyright (c) 2000-2009 Fabrice Bellard, et al. built on Oct 14 2009 04:04:42 with gcc 4.2.4 configuration: --enable-memalign-hack --prefix=/mingw --cross- prefix=i686-ming w32- --cc=ccache-i686-mingw32-gcc --target-os=mingw32 --arch=i686 --cpu=i686 --e nable-avisynth --enable-gpl --enable-version3 --enable-zlib --enable-bzlib --ena ble-libgsm --enable-libfaad --enable-pthreads --enable-libvorbis --enable- libthe ora --enable-libspeex --enable-libmp3lame --enable-libopenjpeg --enable- libxvid --enable-libschroedinger --enable-libx264 --enable-libopencore_amrwb --enable-li bopencore_amrnb libavutil 50. 3. 0 / 50. 3. 0 libavcodec 52.37. 0 / 52.37. 0 libavformat 52.39. 1 / 52.39. 1 libavdevice 52. 2. 0 / 52. 2. 0 libswscale 0. 7. 1 / 0. 7. 1 [mjpeg @ 0x1a68250]Found 1 unreleased buffers! Input #0, avi, from 'avid.avi': Duration: 00:00:01.79, start: 0.000000, bitrate: 4289 kb/s Stream #0.0: Video: mjpeg, yuvj422p, 720x592, 23.97 tbr, 23.97 tbn, 23.97 tb c Stream #0.1: Audio: mp3, 44100 Hz, 2 channels, s16, 128 kb/s At least one output file must be specified }}} {{{ Author: cehoyos Date: 2009-10-19.23:46:14 Reproducible with mplayer avid.avi -vc avid }}} -- Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/162> FFmpeg <http://ffmpeg.org> FFmpeg issue tracker

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#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 19 Aug '13

19 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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