April 2016 - FFmpeg-trac - lists.ffmpeg.org

#3674(avcodec:new): Just audio without video in windows decoder
by FFmpeg 11 Jul '24

11 Jul '24

#3674: Just audio without video in windows decoder -------------------------------------+------------------------------------- Reporter: mfz | Type: defect Status: new | Priority: normal Component: avcodec | Version: Keywords: h264, | unspecified height, audio, windows media | Blocked By: player, internet explorer | Reproduced by developer: 0 Blocking: | Analyzed by developer: 0 | -------------------------------------+------------------------------------- Summary of the bug: I have a screen recorded video with frame rate 15, video codec H.264 (MP4) and AAC as audio. The target via FFmpeg should contain frame rate 25, height of 720 pixel and the codecs without change. After encoding, the file is playable in VLC player, Chrome browser (HTML5 video tag) and Firefox. In Windows Media player I just get the audio played (no video to see) and in Internet Explorer 11, I get an error ("Unknown source.") How to reproduce: {{{ % ffmpeg -i input_file.mp4 -vf "scale='(trunc((out_h*a)/2)*2):(min(720, in_h))'" output_file.mp4 VERSION: N-63439-g96470ca N-63439-g96470ca }}} Strange is: If I encode the video with a height of 718 or 722 (or any other height I tried), the video is playable anywhere - without problems. Test video file for input (short, length of 1 second): http://www.datafilehost.com/d/1ca920ac -- Ticket URL: <https://trac.ffmpeg.org/ticket/3674> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#4995(undetermined:new): Error when inserting sidx atoms
by FFmpeg 08 Jul '24

08 Jul '24

#4995: Error when inserting sidx atoms -------------------------------------+------------------------------------- Reporter: alan1523 | Type: defect Status: new | Priority: normal Component: | Version: undetermined | unspecified Keywords: | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- bash-3.2$ /Volumes/storage/render/ffmpeg/ffmpeg -y -i "/Volumes/storage/render/media/in/input.mp4" -movflags global_sidx+frag_keyframe -frag_duration 1000 -codec:v libx264 -profile:v baseline -pix_fmt yuv420p -b:v 500k -codec:a aac -b:a 96k -strict -2 -s 426x240 -threads 0 "/Volumes/storage/render/media/out/output.mp4" ffmpeg version N-76633-g4746653-tessus Copyright (c) 2000-2015 the FFmpeg developers built with Apple LLVM version 6.0 (clang-600.0.57) (based on LLVM 3.5svn) configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --as=yasm --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libass --enable-libbluray --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable- libvpx --enable-libwavpack --enable-libx264 --enable-libx265 --enable- libxavs --enable-libxvid --enable-libzmq --enable-version3 --disable- ffplay --disable-indev=qtkit --disable-indev=x11grab_xcb libavutil 55. 5.100 / 55. 5.100 libavcodec 57. 13.102 / 57. 13.102 libavformat 57. 13.100 / 57. 13.100 libavdevice 57. 0.100 / 57. 0.100 libavfilter 6. 14.101 / 6. 14.101 libswscale 4. 0.100 / 4. 0.100 libswresample 2. 0.100 / 2. 0.100 libpostproc 54. 0.100 / 54. 0.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Volumes/storage/render/media/in/input.mp4': Metadata: major_brand : qt minor_version : 537199360 compatible_brands: qt creation_time : 2015-10-27 16:59:17 Duration: 00:00:10.64, start: 0.000000, bitrate: 3098 kb/s Stream #0:0(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 83 kb/s (default) Metadata: creation_time : 2015-10-27 16:59:41 handler_name : Apple Alias Data Handler Stream #0:1(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 1280x720, 3008 kb/s, SAR 1:1 DAR 16:9, 29.97 fps, 29.97 tbr, 90k tbn, 180k tbc (default) Metadata: creation_time : 2015-10-27 16:59:41 handler_name : Apple Alias Data Handler encoder : H.264 [libx264 @ 0x7fc1d3012e00] using SAR=640/639 [libx264 @ 0x7fc1d3012e00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX [libx264 @ 0x7fc1d3012e00] profile Constrained Baseline, level 2.1 [libx264 @ 0x7fc1d3012e00] 264 - core 148 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=0 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=7 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=abr mbtree=1 bitrate=500 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00 Output #0, mp4, to '/Volumes/storage/render/media/out/output.mp4': Metadata: major_brand : qt minor_version : 537199360 compatible_brands: qt encoder : Lavf57.13.100 Stream #0:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 426x240 [SAR 640:639 DAR 16:9], q=-1--1, 500 kb/s, 29.97 fps, 30k tbn, 29.97 tbc (default) Metadata: creation_time : 2015-10-27 16:59:41 handler_name : Apple Alias Data Handler encoder : Lavc57.13.102 libx264 Stream #0:1(eng): Audio: aac ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 96 kb/s (default) Metadata: creation_time : 2015-10-27 16:59:41 handler_name : Apple Alias Data Handler encoder : Lavc57.13.102 aac Stream mapping: Stream #0:1 -> #0:0 (h264 (native) -> h264 (libx264)) Stream #0:0 -> #0:1 (aac (native) -> aac (native)) Press [q] to stop, [?] for help frame= 124 fps=0.0 q=25.0 size= 182kB time=00:00:04.88 bitrate= 305.0kbits/frame= 179 fps=179 q=27.0 size= 353kB time=00:00:06.61 bitrate= 437.2kbits/frame= 317 fps=211 q=25.0 size= 766kB time=00:00:10.64 bitrate= 589.2kbits/[mp4 @ 0x7fc1d3010400] Starting second pass: inserting sidx atoms Non-consecutive fragments, writing incorrect sidx Last message repeated 711 times frame= 319 fps=202 q=-1.0 Lsize= 913kB time=00:00:10.68 bitrate= 699.5kbits/s video:678kB audio:125kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 13.572538% [libx264 @ 0x7fc1d3012e00] frame I:5 Avg QP:20.79 size: 11995 [libx264 @ 0x7fc1d3012e00] frame P:314 Avg QP:23.62 size: 2019 [libx264 @ 0x7fc1d3012e00] mb I I16..4: 20.0% 0.0% 80.0% [libx264 @ 0x7fc1d3012e00] mb P I16..4: 0.9% 0.0% 2.6% P16..4: 36.6% 17.0% 6.8% 0.0% 0.0% skip:36.1% [libx264 @ 0x7fc1d3012e00] final ratefactor: 21.26 [libx264 @ 0x7fc1d3012e00] coded y,uvDC,uvAC intra: 66.7% 84.4% 57.9% inter: 16.3% 31.1% 3.8% [libx264 @ 0x7fc1d3012e00] i16 v,h,dc,p: 28% 26% 21% 25% [libx264 @ 0x7fc1d3012e00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 18% 25% 15% 6% 8% 7% 9% 6% 7% [libx264 @ 0x7fc1d3012e00] i8c dc,h,v,p: 50% 26% 15% 8% [libx264 @ 0x7fc1d3012e00] ref P L0: 75.7% 14.4% 9.9% [libx264 @ 0x7fc1d3012e00] kb/s:521.63 [aac @ 0x7fc1d3025a00] Qavg: 526.973 bash-3.2$ -- Ticket URL: <https://trac.ffmpeg.org/ticket/4995> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#4478(avformat:new): PlayStation 2 movie files not supported (.pss)
by FFmpeg 08 Jul '24

08 Jul '24

#4478: PlayStation 2 movie files not supported (.pss) -------------------------------------+------------------------------------- Reporter: Melchior | Type: Status: new | enhancement Component: avformat | Priority: normal Keywords: PlayStation | Version: 2, PS2, .pss | unspecified Blocking: | Blocked By: Analyzed by developer: 0 | Reproduced by developer: 0 -------------------------------------+------------------------------------- I decided to dig out 2 of my Sony PlayStation 2 games: - Suikoden 3 - Suikoden 4 and extract the Movie (Opening/Closing) I found some str.bin files as well but all the movie files are .pss I get FFmpeg builds from and use them with http://ffmpeg.zeranoe.com/builds/ http://avanti.arrozcru.com/ OS used on: DesktopPC -- Windows XP Professional x64 LaptopPC -- Windows 7 Ultimate x64 these files I could barely extract the Video.. but the audio was not getting even seen never-mind getting extracted.. -- Ticket URL: <https://trac.ffmpeg.org/ticket/4478> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#4683(undetermined:new): mjpeg: 12bpp fix artefacts
by FFmpeg 29 Jun '24

29 Jun '24

#4683: mjpeg: 12bpp fix artefacts -------------------------------------+------------------------------------- Reporter: ami_stuff | Owner: Type: defect | Status: new Priority: normal | Component: Version: | undetermined unspecified | Keywords: Blocked By: | Blocking: Reproduced by developer: 0 | Analyzed by developer: 0 -------------------------------------+------------------------------------- artefacts on the logo {{{ C:\>ffmpeg -i 12bpp.jpg out.bmp ffmpeg version N-73189-g7728d23 Copyright (c) 2000-2015 the FFmpeg developers built with gcc 4.9.2 (GCC) configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable- libcaca -- enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-l ibilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enab le-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable- librtmp --en able-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --ena ble-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo- amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enabl e-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --ena ble-decklink --enable-zlib libavutil 54. 27.100 / 54. 27.100 libavcodec 56. 45.100 / 56. 45.100 libavformat 56. 38.102 / 56. 38.102 libavdevice 56. 4.100 / 56. 4.100 libavfilter 5. 18.100 / 5. 18.100 libswscale 3. 1.101 / 3. 1.101 libswresample 1. 2.100 / 1. 2.100 libpostproc 53. 3.100 / 53. 3.100 Input #0, image2, from '12bpp.jpg': Duration: 00:00:00.04, start: 0.000000, bitrate: 65308 kb/s Stream #0:0: Video: mjpeg, gray16le(12 bpc, bt470bg/unknown/unknown), 999x74 9 [SAR 300:300 DAR 999:749], 25 tbr, 25 tbn, 25 tbc Output #0, image2, to 'out.bmp': Metadata: encoder : Lavf56.38.102 Stream #0:0: Video: bmp, gray, 999x749 [SAR 1:1 DAR 999:749], q=2-31, 200 kb /s, 25 fps, 25 tbn, 25 tbc Metadata: encoder : Lavc56.45.100 bmp Stream mapping: Stream #0:0 -> #0:0 (mjpeg (native) -> bmp (native)) Press [q] to stop, [?] for help frame= 1 fps=0.0 q=0.0 Lsize=N/A time=00:00:00.04 bitrate=N/A video:732kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing o verhead: unknown }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/4683> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#3386(undetermined:new): [H264] [Regression] illegal short term buffer state detected
by FFmpeg 19 Jun '24

19 Jun '24

#3386: [H264] [Regression] illegal short term buffer state detected -------------------------------------+------------------------------------- Reporter: | Type: defect Underground78 | Priority: normal Status: new | Version: git- Component: | master undetermined | Blocked By: Keywords: | Reproduced by developer: 0 Blocking: | Analyzed by developer: 0 | -------------------------------------+------------------------------------- '''Summary of the bug:''' A regression in H264 decoding was apparently introduced about 3 months ago. It leads to artifacts appearing during playback with "illegal short term buffer state detected" errors being reported in the log. '''How to reproduce:''' Try [http://stfcc.org/misc/bbc2.sample.ts this sample] in ffplay for example. {{{ >ffplay.exe bbc2.sample.ts ffplay version N-60646-gd601106 Copyright (c) 2003-2014 the FFmpeg developers built on Feb 15 2014 03:11:41 with gcc 4.8.2 (GCC) configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable- librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo- aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-zlib libavutil 52. 63.101 / 52. 63.101 libavcodec 55. 52.101 / 55. 52.101 libavformat 55. 32.101 / 55. 32.101 libavdevice 55. 9.101 / 55. 9.101 libavfilter 4. 1.102 / 4. 1.102 libswscale 2. 5.101 / 2. 5.101 libswresample 0. 17.104 / 0. 17.104 libpostproc 52. 3.100 / 52. 3.100 [NULL @ 04011580] start time is not set in estimate_timings_from_pts [mpegts @ 0400d160] PES packet size mismatch Last message repeated 1 times Input #0, mpegts, from 'bbc2.sample.ts': Duration: 00:00:47.48, start: 0.200000, bitrate: 8424 kb/s Program 1 Stream #0:0[0x157c]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(tv , bt709), 1440x1080 [SAR 4:3 DAR 16:9], 23.75 fps, 25 tbr, 90k tbn, 50 tbc Stream #0:1[0x157d](eng): Audio: ac3 ([6][0][0][0] / 0x0006), 48000 Hz, ster eo, fltp, 192 kb/s Stream #0:2[0x157f](eng): Subtitle: dvb_teletext ([6][0][0][0] / 0x0006) Stream #0:3[0x1580](eng): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006) No codec could be found with id 94215 [h264 @ 054c1980] illegal short term buffer state detected }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/3386> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#5309(undetermined:new): Seek doesn't work in some .mp4 files
by FFmpeg 25 May '24

25 May '24

#5309: Seek doesn't work in some .mp4 files -------------------------------------+------------------------------------- Reporter: Arnaud | Type: defect Status: new | Priority: normal Component: | Version: git- undetermined | master Keywords: | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- Summary of the bug: How to reproduce: {{{ % ffplay -ss 5 ffmpeg version: ffplay version N-78958-g8c24523 built from latest git, on Ubuntu 14.04.3, on 2016-03-07 }}} File is seek_not_working.mp4 The file plays well but always from the beginning: the seek isn't working. -- Ticket URL: <https://trac.ffmpeg.org/ticket/5309> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#4078(ffmpeg:new): Specify audio bitrate per-channel
by FFmpeg 15 Apr '24

15 Apr '24

#4078: Specify audio bitrate per-channel ----------------------------------+--------------------------------------- Reporter: Haravikk | Type: enhancement Status: new | Priority: normal Component: ffmpeg | Version: unspecified Keywords: | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | ----------------------------------+--------------------------------------- Fairly self-explanatory, but currently we can specify audio bit-rate for the entire stream, but this requires us to calculate the total bitrate from the number of input channels ourselves. This is fine for single files, but for batch-encoding a mixture of stereo and surround-sound content it's not as ideal, or even for encoding a file that contains multiple audio-streams. To accommodate these use-cases I'd like to request an alternative syntax for specifying audio channels with a per-channel bit-rate so that I can instead just specify say 64k per channel for AAC, with ffmpeg automatically using a total of 128k for stereo or 384k for 5.1 etc. I'm not sure what the best way to do this would be. I suppose one option would be to have a new parameter -bc for "bits per channel", so I could specify something like ffmpeg -i "$INFILE" -acodec aac -bc:a 64k "$OUTFILE" An alternative would be allowing some kind of suffix to the -b option such as: ffmpeg -i "$INFILE" -acodec aac -b:a 64k/c "$OUTFILE" -- Ticket URL: <https://trac.ffmpeg.org/ticket/4078> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#4209(undetermined:new): GPS coordinates location and other iOS metadata in MOV are not copied to output MP4
by FFmpeg 10 Apr '24

10 Apr '24

#4209: GPS coordinates location and other iOS metadata in MOV are not copied to output MP4 -------------------------------------+------------------------------------- Reporter: elmimmo | Type: defect Status: new | Priority: normal Component: | Version: undetermined | unspecified Keywords: | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- Summary of the bug: Certain metadata in MOV files recorded with iOS devices, such as GPS location, is lost when converting to MP4. **ffmpeg** does state in its log that the output file will contain such metadata, but such is not the case as identified with **ffprobe** and **exiftool**. Some of the metadata present in the input MOV that is missing in the output MP4, according to **ffprobe**: - make ("Apple") - encoder - location (GPS latitude/longitude/altitude coordinates) - model (the iPhone/iPad/iPod model) **exiftool** identifies some more: - camera identifier ("Back" or "Front") - Software Version (iOS version) This happens irrespective of input video/audio being transcoded or just repackaged. How to reproduce: {{{ % ffmpeg -i INPUT.mov -map_metadata 0 -c copy OUTPUT.mp4 ffmpeg version 2.5.2 Copyright (c) 2000-2014 the FFmpeg developers built on Dec 26 2014 21:55:58 with Apple LLVM version 4.2 (clang-425.0.28) (based on LLVM 3.2svn) configuration: --prefix=/usr/local/Cellar/ffmpeg/2.5.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable- libx264 --enable-libmp3lame --enable-libxvid --enable-libvo-aacenc --enable-vda libavutil 54. 15.100 / 54. 15.100 libavcodec 56. 13.100 / 56. 13.100 libavformat 56. 15.102 / 56. 15.102 libavdevice 56. 3.100 / 56. 3.100 libavfilter 5. 2.103 / 5. 2.103 libavresample 2. 1. 0 / 2. 1. 0 libswscale 3. 1.101 / 3. 1.101 libswresample 1. 1.100 / 1. 1.100 libpostproc 53. 3.100 / 53. 3.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'INPUT.mov': Metadata: major_brand : qt minor_version : 0 compatible_brands: qt creation_time : 2014-12-26 20:54:22 model : iPhone 4 model-spa : iPhone 4 encoder : 7.1.1 encoder-spa : 7.1.1 date : 2014-12-26T21:54:22+0100 date-spa : 2014-12-26T21:54:22+0100 location : +41.4082+002.1852+027.119/ location-spa : +41.4082+002.1852+027.119/ make : Apple make-spa : Apple Duration: 00:00:01.07, start: 0.000000, bitrate: 11694 kb/s Stream #0:0(und): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p(tv, bt709), 1280x720, 11890 kb/s, 24 fps, 24 tbr, 600 tbn, 1200 tbc (default) Metadata: rotate : 90 creation_time : 2014-12-26 20:54:22 handler_name : Core Media Data Handler encoder : H.264 Side data: displaymatrix: rotation of -90.00 degrees Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 62 kb/s (default) Metadata: creation_time : 2014-12-26 20:54:22 handler_name : Core Media Data Handler Output #0, mp4, to 'OUTPUT.mp4': Metadata: major_brand : qt minor_version : 0 compatible_brands: qt creation_time : 2014-12-26 20:54:22 model : iPhone 4 model-spa : iPhone 4 make-spa : Apple encoder : Lavf56.15.102 date : 2014-12-26T21:54:22+0100 date-spa : 2014-12-26T21:54:22+0100 location : +41.4082+002.1852+027.119/ location-spa : +41.4082+002.1852+027.119/ make : Apple Stream #0:0(und): Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 1280x720, q=2-31, 11890 kb/s, 24 fps, 19200 tbn, 600 tbc (default) Metadata: rotate : 90 creation_time : 2014-12-26 20:54:22 handler_name : Core Media Data Handler encoder : H.264 Side data: displaymatrix: rotation of -90.00 degrees Stream #0:1(und): Audio: aac ([64][0][0][0] / 0x0040), 44100 Hz, mono, 62 kb/s (default) Metadata: creation_time : 2014-12-26 20:54:22 handler_name : Core Media Data Handler Stream mapping: Stream #0:0 -> #0:0 (copy) Stream #0:1 -> #0:1 (copy) Press [q] to stop, [?] for help frame= 25 fps=0.0 q=-1.0 Lsize= 1522kB time=00:00:01.06 bitrate=11673.4kbits/s video:1512kB audio:8kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.123020% }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/4209> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#4859(undetermined:new): TTML subtitles
by FFmpeg 14 Mar '24

14 Mar '24

#4859: TTML subtitles -------------------------------------+------------------------------------- Reporter: cehoyos | Owner: Type: | Status: new enhancement | Component: Priority: wish | undetermined Version: git- | Keywords: sub master | Blocking: Blocked By: | Analyzed by developer: 0 Reproduced by developer: 0 | -------------------------------------+------------------------------------- vlc ticket 14974: https://trac.videolan.org/vlc/ticket/14974 FFmpeg does not support EBU Timed-Text Markup Language (TTML) subtitles yet. -- Ticket URL: <https://trac.ffmpeg.org/ticket/4859> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#5154(avformat:new): Demux h264 stream from Arecont camera
by FFmpeg 22 Feb '24

22 Feb '24

#5154: Demux h264 stream from Arecont camera ---------------------------------------+---------------------------------- Reporter: cehoyos | Owner: Type: enhancement | Status: new Priority: wish | Component: avformat Version: git-master | Keywords: h264 Blocked By: | Blocking: Reproduced by developer: 0 | Analyzed by developer: 0 ---------------------------------------+---------------------------------- http://ffmpeg.org/pipermail/ffmpeg-user/2016-January/030122.html A user provided a stream dump from his Arecont Vision AV20365CO. FFmpeg correctly autodetects the stream as h264 but every frame starts with a http content header that makes remuxing impossible: {{{ $ ffmpeg -r 25 -i h264stream.dump -vcodec copy out.mov ffmpeg version N-77810-g405abdb Copyright (c) 2000-2016 the FFmpeg developers built with gcc 4.7 (SUSE Linux) configuration: --enable-gpl --enable-libx264 libavutil 55. 13.100 / 55. 13.100 libavcodec 57. 22.100 / 57. 22.100 libavformat 57. 21.101 / 57. 21.101 libavdevice 57. 0.100 / 57. 0.100 libavfilter 6. 23.100 / 6. 23.100 libswscale 4. 0.100 / 4. 0.100 libswresample 2. 0.101 / 2. 0.101 libpostproc 54. 0.100 / 54. 0.100 [h264 @ 0x29a9440] Stream #0: not enough frames to estimate rate; consider increasing probesize Input #0, h264, from 'h264stream.dump': Duration: N/A, bitrate: N/A Stream #0:0: Video: h264 (Baseline), yuv420p, 1280x960, 25 fps, 25 tbr, 1200k tbn, 50 tbc [mov @ 0x2a378e0] Codec for stream 0 does not use global headers but container format requires global headers Output #0, mov, to 'out.mov': Metadata: encoder : Lavf57.21.101 Stream #0:0: Video: h264 (avc1 / 0x31637661), yuv420p, 1280x960, q=2-31, 25 fps, 25 tbr, 12800 tbn, 25 tbc Stream mapping: Stream #0:0 -> #0:0 (copy) Press [q] to stop, [?] for help [mov @ 0x2a378e0] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly frame= 20 fps=0.0 q=-1.0 Lsize= 13897kB time=00:00:00.80 bitrate=142304.5kbits/s speed=34.4x video:13896kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.006613% }}} The output file is unreadable. The following works fine: {{{ $ cat h264stream.dump | sed -u -b -e '/^--fbdr\r$/ {N;N;N;d}' | ffmpeg -i - -vcodec copy out.mov ffmpeg version N-77810-g405abdb Copyright (c) 2000-2016 the FFmpeg developers built with gcc 4.7 (SUSE Linux) configuration: --enable-gpl --enable-libx264 libavutil 55. 13.100 / 55. 13.100 libavcodec 57. 22.100 / 57. 22.100 libavformat 57. 21.101 / 57. 21.101 libavdevice 57. 0.100 / 57. 0.100 libavfilter 6. 23.100 / 6. 23.100 libswscale 4. 0.100 / 4. 0.100 libswresample 2. 0.101 / 2. 0.101 libpostproc 54. 0.100 / 54. 0.100 [h264 @ 0x27a33c0] Stream #0: not enough frames to estimate rate; consider increasing probesize Input #0, h264, from 'pipe:': Duration: N/A, bitrate: N/A Stream #0:0: Video: h264 (Baseline), yuv420p, 1280x960, 25 fps, 25 tbr, 1200k tbn, 50 tbc [mov @ 0x27aa460] Codec for stream 0 does not use global headers but container format requires global headers [mov @ 0x27aa460] WARNING codec timebase is very high. If duration is too long, file may not be playable by quicktime. Specify a shorter timebase or choose different container. Output #0, mov, to 'out.mov': Metadata: encoder : Lavf57.21.101 Stream #0:0: Video: h264 (avc1 / 0x31637661), yuv420p, 1280x960, q=2-31, 25 fps, 25 tbr, 1200k tbn, 1200k tbc Stream mapping: Stream #0:0 -> #0:0 (copy) [mov @ 0x27aa460] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly frame= 20 fps=0.0 q=-1.0 Lsize= 13896kB time=00:00:00.76 bitrate=149782.4kbits/s speed=17.2x video:13895kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.006635% }}} http://www.stardot-tech.com/developer/api.html describes a different but similar format, it also distinguishes between "Content-type: video/H.264I" for I-frames and "Content-type: video/H.264P" for P-frames. -- Ticket URL: <https://trac.ffmpeg.org/ticket/5154> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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