September 2014 - FFmpeg-trac - lists.ffmpeg.org

#3805(undetermined:new): hash brown decoding error
by FFmpeg 07 Oct '20

07 Oct '20

#3805: hash brown decoding error -------------------------------------+------------------------------------- Reporter: dericed | Owner: Type: defect | Status: new Priority: critical | Component: Version: git- | undetermined master | Keywords: png Blocked By: | Blocking: Reproduced by developer: 0 | Analyzed by developer: 0 -------------------------------------+------------------------------------- Summary of the bug: The official digital portrait of the McDonald's hash brown decodes incorrectly in ffmpeg adding distorted orange colors. The png is here: http://www.mcdonalds.com/content/dam/McDonalds/item/mcdonalds-Hash- Brown.png. How to reproduce: {{{ ffplay http://www.mcdonalds.com/content/dam/McDonalds/item/mcdonalds-Hash- Brown.png ffplay version N-64536-gc8b2cf4 Copyright (c) 2003-2014 the FFmpeg developers built on Jul 8 2014 23:01:07 with Apple LLVM version 5.1 (clang-503.0.40) (based on LLVM 3.4svn) configuration: --prefix=/usr/local/Cellar/ffmpeg/HEAD --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-avresample --enable-vda --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libfaac --enable- libmp3lame --enable-libxvid --enable-libfreetype --enable-ffplay --enable- libopenjpeg --extra- cflags='-I/usr/local/Cellar/openjpeg/1.5.1_1/include/openjpeg-1.5 ' libavutil 52. 91.100 / 52. 91.100 libavcodec 55. 68.102 / 55. 68.102 libavformat 55. 45.100 / 55. 45.100 libavdevice 55. 13.102 / 55. 13.102 libavfilter 4. 10.100 / 4. 10.100 libavresample 1. 3. 0 / 1. 3. 0 libswscale 2. 6.100 / 2. 6.100 libswresample 0. 19.100 / 0. 19.100 libpostproc 52. 3.100 / 52. 3.100 Input #0, image2, from 'http://www.mcdonalds.com/content/dam/McDonalds/item/mcdonalds-Hash- Brown.png': Duration: 00:00:00.04, start: 0.000000, bitrate: N/A Stream #0:0: Video: png, rgba, 444x320 [SAR 2835:2835 DAR 111:80], 25 tbr, 25 tbn, 25 tbc 0.67 M-V: 0.000 fd= 0 aq= 0KB vq= 0KB sq= 0B f=0/0 }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/3805> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#3988(undetermined:new): Faasoft violates GPL
by FFmpeg 04 May '20

04 May '20

#3988: Faasoft violates GPL -------------------------------------+------------------------------------- Reporter: llogan | Owner: Type: license | Status: new violation | Component: Priority: normal | undetermined Version: | Keywords: unspecified | Blocking: Blocked By: | Analyzed by developer: 0 Reproduced by developer: 0 | -------------------------------------+------------------------------------- http://www.faasoft.com/video-converter.html `--enable-gpl` and `--enable-nonfree` in the distributed ffmpeg binary. -- Ticket URL: <https://trac.ffmpeg.org/ticket/3988> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#3615(ffmpeg:new): -y option affects audio/video skew during screen capture
by FFmpeg 20 Jan '20

20 Jan '20

#3615: -y option affects audio/video skew during screen capture ---------------------------------+------------------------------------- Reporter: grepfor | Type: defect Status: new | Priority: important Component: ffmpeg | Version: 2.2.1 Keywords: | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | ---------------------------------+------------------------------------- Example: On my system, the following script works fine and consistently renders normally synchronized audio and video: {{{ ffmpeg -f alsa -ac 2 -i hw:0 \ -f x11grab -r 30 -s 1600x900 -i :0.0 \ -acodec mp3 \ -vcodec libx264 -preset ultrafast -threads 0 \ -f matroska -y ofile.mkv }}} However, removing the **-y** option -- and assuming that a file named `ofile.mkv` already exists, so that ffmpeg asks whether to overwrite it -- results in skew between audio and video. The observed skew seems to be roughly equal to the time it takes for the user to respond to the //File exists. Overwrite?// question. This suggests that the source of the problem may be that the audio timestamp is being initialized prior to the //Overwrite?// question and the video timestamp initialized after the user response. Just guessing. In any case, omitting **-y** produces gross skew effects, and is 100% reproducible on my system. Logfiles obtained using the **-report** option are attached, one for each case (with and without **-y** option). **NOTE:** This ticket was filed with priority "important" because during my own investigation of the issue, I came across a large number of reports by others also stumped by A/V skew peculiarities when attempting aud+vid screencaps using `ffmpeg`. Many were frustrated at being unable to get any of the (numerous) cargo-cult 'recipe' commandline approaches to work. A few of the recipies do explicitly specify using **-y**, but I didn't see any explanations as to why it was necessary, and it seems (at least to me) extremely counterintuitive that that option should have any such effect. In short, aud+vid screencap seems like a not-uncommon application of `ffmpeg` and fixing this sooner rather than later may help quite a few people avoid tripping over the same issue. Just my 2c, and perhaps exaggerating the need for priority. Obviously re- prioritize as you see fit. NOTES: 0. Demo system was Arch linux, synched to repos about 2 days ago. 1. Effect has been observed using **mp3** and **pcm_s16le** audio codecs. 2. Have not tried it with video codecs other than **libx264**. -- Ticket URL: <https://trac.ffmpeg.org/ticket/3615> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#3493(ffmpeg:new): ffmpeg unable to download when using AES-128 with https protocol
by FFmpeg 20 Jan '20

20 Jan '20

#3493: ffmpeg unable to download when using AES-128 with https protocol ----------------------------------+-------------------------------------- Reporter: adi10289 | Type: defect Status: new | Priority: critical Component: ffmpeg | Version: git-master Keywords: | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | ----------------------------------+-------------------------------------- Hi Recently I was able to download AES-128 encrypted videos using ffmpeg with normal http protocol but since protocol is changed to secure https I am unable to download any video. Pls find below logs and help. ffmpeg -i "http://hls.spuul.com/va/movies/12610001-c9e0f902/0011/s_renditions.m3u8" -c copy -absf aac_adtstoasc "Ankhon Dekhi 1080p.mkv" -loglevel verbose ffmpeg version N-61722-gfc567ac Copyright (c) 2000-2014 the FFmpeg developers built on Mar 22 2014 22:01:33 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. 67.100 / 52. 67.100 libavcodec 55. 52.103 / 55. 52.103 libavformat 55. 34.101 / 55. 34.101 libavdevice 55. 11.100 / 55. 11.100 libavfilter 4. 3.100 / 4. 3.100 libswscale 2. 5.102 / 2. 5.102 libswresample 0. 18.100 / 0. 18.100 libpostproc 52. 3.100 / 52. 3.100 [https @ 02a0e160] HTTP error 404 Not Found Unable to open key file https://secure.spuul.com/keys/va/movies/12610001-c9e0f902/0011/renditions- encryption-00001.key Format mp3 detected only with low score of 1, misdetection possible! [mp3 @ 02a07180] Header missing Last message repeated 1057 times [mp3 @ 046e9a60] decoding for stream 0 failed [mp3 @ 046e9a60] Could not find codec parameters for stream 0 (Audio: mp3, 0 channels, s16p): unspecified frame size Consider increasing the value for the 'analyzeduration' and 'probesize' options http://hls.spuul.com/va/movies/12610001-c9e0f902/0011/s_renditions.m3u8: Operation not permitted -- Ticket URL: <https://trac.ffmpeg.org/ticket/3493> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#3707(avcodec:new): Support decoding transparency information in dnxhd streams
by FFmpeg 13 Dec '19

13 Dec '19

#3707: Support decoding transparency information in dnxhd streams -------------------------------------+------------------------------------- Reporter: cehoyos | Owner: Type: | Status: new enhancement | Component: avcodec Priority: wish | Keywords: dnxhd alpha Version: git- | Blocking: master | Analyzed by developer: 0 Blocked By: | Reproduced by developer: 0 | -------------------------------------+------------------------------------- http://thread.gmane.org/gmane.comp.video.ffmpeg.libav.user/13205 A user uploaded a dnxhd sample that contains transparency information (the black background is supposed to be transparent), FFmpeg reports yuv422p10le. {{{ $ ffmpeg -i Untitled_dnhd.mov ffmpeg version N-63852-gf341340 Copyright (c) 2000-2014 the FFmpeg developers built on Jun 9 2014 16:59:00 with gcc 4.7 (SUSE Linux) configuration: --enable-gpl libavutil 52. 89.100 / 52. 89.100 libavcodec 55. 66.100 / 55. 66.100 libavformat 55. 42.101 / 55. 42.101 libavdevice 55. 13.101 / 55. 13.101 libavfilter 4. 7.100 / 4. 7.100 libswscale 2. 6.100 / 2. 6.100 libswresample 0. 19.100 / 0. 19.100 libpostproc 52. 3.100 / 52. 3.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Untitled_dnhd.mov': Metadata: major_brand : qt minor_version : 537199360 compatible_brands: qt creation_time : 2014-05-29 21:36:09 Duration: 00:00:01.03, start: 0.000000, bitrate: 842317 kb/s Stream #0:0(eng): Video: dnxhd (AVdn / 0x6E645641), yuv422p10le, 1920x1080, 841432 kb/s, 29.97 fps, 29.97 tbr, 1000k tbn, 1000k tbc (default) Metadata: creation_time : 2014-05-29 21:36:09 handler_name : Apple Alias Data Handler encoder : DNxHD 709 At least one output file must be specified }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/3707> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#3664(undetermined:new): ffprobe can't read packet DTS/PTS
by FFmpeg 07 Nov '19

07 Nov '19

#3664: ffprobe can't read packet DTS/PTS -------------------------------------+------------------------------------- Reporter: hxuanyu | Type: defect Status: new | Priority: normal Component: | Version: undetermined | unspecified Keywords: | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- ffprobe built from latest git head can't read out all DTS/PTS. attached txt are output by calling ffprobe -show_packets -select_streams v INPUT hxuanyu@ubuntu:~/Downloads/ffmpeg$ ./ffprobe -show_packets -select_streams v v_h264_30_yuv420p_dar30x17_0.mpeg >latest.txt ffprobe version N-63381-g64bf845 Copyright (c) 2007-2014 the FFmpeg developers built on May 23 2014 16:39:38 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5) configuration: --enable-static --disable-shared --enable-small libavutil 52. 86.100 / 52. 86.100 libavcodec 55. 63.100 / 55. 63.100 libavformat 55. 40.100 / 55. 40.100 libavdevice 55. 13.101 / 55. 13.101 libavfilter 4. 5.100 / 4. 5.100 libswscale 2. 6.100 / 2. 6.100 libswresample 0. 19.100 / 0. 19.100 Input #0, mpeg, from 'v_h264_30_yuv420p_dar30x17_0.mpeg': Duration: 00:00:06.01, start: 1.000000, bitrate: 703 kb/s Stream #0:0[0x1e0]: Video: h264, yuv420p, 480x272 [SAR 1:1 DAR 30:17], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc but ffprobe built from ffmpeg 2.0.1 could read out all DTS/PTS -- Ticket URL: <https://trac.ffmpeg.org/ticket/3664> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#3885(undetermined:new): cavs: "weighted prediction not yet supported"
by FFmpeg 06 Nov '19

06 Nov '19

#3885: cavs: "weighted prediction not yet supported" -------------------------------------+------------------------------------- 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 -------------------------------------+------------------------------------- I think that there must be some incorrect check in the code, because frame is obviously decoded and looks just fine. {{{ C:\>ffmpeg -i 320.bmp -vcodec libxavs out.avi ffmpeg version N-65672-g65f05ef Copyright (c) 2000-2014 the FFmpeg developers built on Aug 15 2014 22:01:33 with gcc 4.8.3 (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-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-lib modplug --enable-libmp3lame --enable-libopencore-amrnb --enable- libopencore-amrw b --enable-libopenjpeg --enable-libopus --enable-librtmp --enable- libschroedinge r --enable-libsoxr --enable-libspeex --enable-libtheora --enable- libtwolame --en able-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable- libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable- libx265 --enable-libxavs --enable-libxvid --enable-decklink --enable-zlib libavutil 54. 3.100 / 54. 3.100 libavcodec 56. 0.101 / 56. 0.101 libavformat 56. 1.100 / 56. 1.100 libavdevice 56. 0.100 / 56. 0.100 libavfilter 5. 0.100 / 5. 0.100 libswscale 3. 0.100 / 3. 0.100 libswresample 1. 0.100 / 1. 0.100 libpostproc 53. 0.100 / 53. 0.100 Input #0, image2, from '320.bmp': Duration: 00:00:00.04, start: 0.000000, bitrate: N/A Stream #0:0: Video: bmp, bgr24, 320x240, 25 tbr, 25 tbn, 25 tbc File 'out.avi' already exists. Overwrite ? [y/N] y [libxavs @ 02e1b3a0] using cpu capabilities [libxavs @ 02e1b3a0] profile JiZhun, level 6.4 Output #0, avi, to 'out.avi': Metadata: ISFT : Lavf56.1.100 Stream #0:0: Video: cavs (libxavs) (CAVS / 0x53564143), yuv420p, 320x240, q= 2-31, 25 fps, 25 tbn, 25 tbc Metadata: encoder : Lavc56.0.101 libxavs Stream mapping: Stream #0:0 -> #0:0 (bmp (native) -> cavs (libxavs)) Press [q] to stop, [?] for help [avi @ 02f10400] Non-monotonous DTS in output stream 0:0; previous: 0, current: 0; changing to 1. This may result in incorrect timestamps in the output file. frame= 1 fps=0.0 q=26.0 Lsize= 23kB time=00:00:00.08 bitrate=2385.8kbits /s video:18kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing ov erhead: 31.615822% [libxavs @ 02e1b3a0] slice I:1 Avg QP:26.00 size: 18119 [libxavs @ 02e1b3a0] mb I I16..4: 0.0% 100.0% 0.0% [libxavs @ 02e1b3a0] final ratefactor: 22.88 [libxavs @ 02e1b3a0] 8x8 transform intra:100.0% inter:nan% [libxavs @ 02e1b3a0] kb/s:3623.8 }}} {{{ C:\>ffmpeg -i out.avi out2.avi ffmpeg version N-65672-g65f05ef Copyright (c) 2000-2014 the FFmpeg developers built on Aug 15 2014 22:01:33 with gcc 4.8.3 (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-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-lib modplug --enable-libmp3lame --enable-libopencore-amrnb --enable- libopencore-amrw b --enable-libopenjpeg --enable-libopus --enable-librtmp --enable- libschroedinge r --enable-libsoxr --enable-libspeex --enable-libtheora --enable- libtwolame --en able-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable- libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable- libx265 --enable-libxavs --enable-libxvid --enable-decklink --enable-zlib libavutil 54. 3.100 / 54. 3.100 libavcodec 56. 0.101 / 56. 0.101 libavformat 56. 1.100 / 56. 1.100 libavdevice 56. 0.100 / 56. 0.100 libavfilter 5. 0.100 / 5. 0.100 libswscale 3. 0.100 / 3. 0.100 libswresample 1. 0.100 / 1. 0.100 libpostproc 53. 0.100 / 53. 0.100 Input #0, avi, from 'out.avi': Metadata: encoder : Lavf56.1.100 Duration: 00:00:00.08, start: 0.000000, bitrate: 2385 kb/s Stream #0:0: Video: cavs (CAVS / 0x53564143), yuv420p, 320x240, 25 fps, 25 t br, 25 tbn, 25 tbc File 'out2.avi' already exists. Overwrite ? [y/N] y Output #0, avi, to 'out2.avi': Metadata: ISFT : Lavf56.1.100 Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 320x240, q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc Metadata: encoder : Lavc56.0.101 mpeg4 Stream mapping: Stream #0:0 -> #0:0 (cavs (native) -> mpeg4 (native)) Press [q] to stop, [?] for help [cavs @ 02e1c640] weighted prediction not yet supported [cavs @ 02e1c640] no frame decoded Last message repeated 1 times frame= 1 fps=0.0 q=4.1 Lsize= 22kB time=00:00:00.04 bitrate=4430.0kbits/ s video:16kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing ov erhead: 34.707779% }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/3885> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#3854(avcodec:new): Does hevc support ARM (VFP and NEON) optimization?
by FFmpeg 29 Oct '19

29 Oct '19

#3854: Does hevc support ARM (VFP and NEON) optimization? -------------------------------------+------------------------------------- Reporter: | Type: felixyang_tw | enhancement Status: new | Priority: wish Component: avcodec | Version: 2.3 Keywords: HEVC, ARM, | Blocked By: NEON | Reproduced by developer: 0 Blocking: | Analyzed by developer: 0 | -------------------------------------+------------------------------------- Dear Sirs: I downloaded the latest source code and I found the HEVC does not support ARM(NEON and VFP) optimization. Is there any plan to implement it? -- Ticket URL: <https://trac.ffmpeg.org/ticket/3854> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#3874(undetermined:new): tiff: yuv with odd width fails to decode
by FFmpeg 26 Oct '19

26 Oct '19

#3874: tiff: yuv with odd width fails to decode -------------------------------------+------------------------------------- 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 -------------------------------------+------------------------------------- sample from ticket #1178 https://trac.ffmpeg.org/raw-attachment/ticket/1178/out.tif {{{ C:\>ffmpegx -i out.tif out.bmp ffmpeg version N-65738-g3c197442 Copyright (c) 2000-2014 the FFmpeg developers built on Aug 19 2014 02:46:13 with gcc 4.5.0 (GCC) 20100414 (Fedora MinGW 4.5. 0-1.fc14) configuration: --prefix=/var/www/users/research/ffmpeg/snapshots/build --arch= x86 --target-os=mingw32 --cross-prefix=i686-pc-mingw32- --cc='ccache i686 -pc-min gw32-gcc' --enable-pthreads --enable-memalign-hack --enable-runtime- cpudetect -- enable-cross-compile --enable-static --disable-shared --extra- libs='-lws2_32 -lw inmm -lpthread' --extra-cflags='--static -I/var/www/users/research/ffmpeg/snapsh ots/build/include' --extra-ldflags='-static -L/var/www/users/research/ffmpeg/sna pshots/build/lib' --enable-bzlib --enable-zlib --enable-gpl --enable- version3 -- enable-nonfree --enable-libx264 --enable-libspeex --enable-libtheora --enable-li bvorbis --enable-libfaac --enable-libxvid --enable-libopencore-amrnb --enable-li bopencore-amrwb --enable-libmp3lame --enable-libfreetype --enable-libvpx --disab le-decoder=libvpx libavutil 54. 5.100 / 54. 5.100 libavcodec 56. 0.101 / 56. 0.101 libavformat 56. 1.100 / 56. 1.100 libavdevice 56. 0.100 / 56. 0.100 libavfilter 5. 0.100 / 5. 0.100 libswscale 3. 0.100 / 3. 0.100 libswresample 1. 1.100 / 1. 1.100 libpostproc 53. 0.100 / 53. 0.100 [tiff @ 0x230b2c0] Copy went out of bounds Input #0, image2, from 'out.tif': Duration: 00:00:00.04, start: 0.000000, bitrate: N/A Stream #0:0: Video: tiff, yuv410p, 323x240 [SAR 1:1 DAR 323:240], 25 tbr, 25 tbn, 25 tbc Output #0, image2, to 'out.bmp': Metadata: encoder : Lavf56.1.100 Stream #0:0: Video: bmp, bgr24, 323x240 [SAR 1:1 DAR 323:240], q=2-31, 200 k b/s, 25 fps, 25 tbn, 25 tbc Metadata: encoder : Lavc56.0.101 bmp Stream mapping: Stream #0:0 -> #0:0 (tiff (native) -> bmp (native)) Press [q] to stop, [?] for help [tiff @ 0x23075e0] Copy went out of bounds frame= 1 fps=0.0 q=0.0 Lsize=N/A time=00:00:00.04 bitrate=N/A video:228kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing o verhead: unknown }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/3874> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#3955(undetermined:new): native vorbis encoder produces noise
by FFmpeg 27 Sep '19

27 Sep '19

#3955: native vorbis encoder produces noise -------------------------------------+------------------------------------- Reporter: hxuanyu | Type: defect Status: new | Priority: normal Component: | Version: undetermined | unspecified Keywords: | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- Converted a 5.1 channel video into webm with latest ffmpeg (using native vorbis for audio encoder). But can hear noise not exists in source video. Was able to reproduce this issue with 2 videos. Below is the command used to convert. {{{ $ ffmpeg.exe -i Stereotest.mp4 -acodec vorbis -strict -2 test.webm ffmpeg version N-66289-gb76d613 Copyright (c) 2000-2014 the FFmpeg developers built on Sep 15 2014 22:02:10 with gcc 4.8.3 (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-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --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-libwebp --enable- libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable- decklink --enable-zlib libavutil 54. 7.100 / 54. 7.100 libavcodec 56. 1.100 / 56. 1.100 libavformat 56. 4.101 / 56. 4.101 libavdevice 56. 0.100 / 56. 0.100 libavfilter 5. 1.100 / 5. 1.100 libswscale 3. 0.100 / 3. 0.100 libswresample 1. 1.100 / 1. 1.100 libpostproc 53. 0.100 / 53. 0.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Stereotest.mp4': Metadata: major_brand : mp42 minor_version : 0 compatible_brands: isommp42 creation_time : 2013-12-23 05:20:05 Duration: 00:00:20.04, start: 0.000000, bitrate: 159 kb/s Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 480x360, 60 kb/s, 29.97 fps, 29.97 tbr, 60k tbn, 59.94 tbc (default) Metadata: handler_name : VideoHandler Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 95 kb/s (default) Metadata: creation_time : 2013-12-23 05:20:05 handler_name : IsoMedia File Produced by Google, 5-11-2011 File 'test.webm' already exists. Overwrite ? [y/N] y [libvpx @ 04404a60] v1.3.0 Output #0, webm, to 'test.webm': Metadata: major_brand : mp42 minor_version : 0 compatible_brands: isommp42 encoder : Lavf56.4.101 Stream #0:0(und): Video: vp8 (libvpx), yuv420p, 480x360, q=-1--1, 200 kb/s, 29.97 fps, 1k tbn, 29.97 tbc (default) Metadata: handler_name : VideoHandler encoder : Lavc56.1.100 libvpx Stream #0:1(und): Audio: vorbis, 44100 Hz, stereo, fltp (default) Metadata: creation_time : 2013-12-23 05:20:05 handler_name : IsoMedia File Produced by Google, 5-11-2011 encoder : Lavc56.1.100 vorbis Stream mapping: Stream #0:0 -> #0:0 (h264 (native) -> vp8 (libvpx)) Stream #0:1 -> #0:1 (aac (native) -> vorbis (native)) Press [q] to stop, [?] for help frame= 600 fps=145 q=0.0 Lsize= 560kB time=00:00:20.06 bitrate= 228.5kbits/s video:130kB audio:416kB subtitle:0kB other streams:0kB global headers:3kB muxing overhead: 2.403836% $ ffmpeg.exe -i Original51.mkv -acodec vorbis -strict -2 test.webm ffmpeg version N-66289-gb76d613 Copyright (c) 2000-2014 the FFmpeg developers built on Sep 15 2014 22:02:10 with gcc 4.8.3 (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-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --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-libwebp --enable- libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable- decklink --enable-zlib libavutil 54. 7.100 / 54. 7.100 libavcodec 56. 1.100 / 56. 1.100 libavformat 56. 4.101 / 56. 4.101 libavdevice 56. 0.100 / 56. 0.100 libavfilter 5. 1.100 / 5. 1.100 libswscale 3. 0.100 / 3. 0.100 libswresample 1. 1.100 / 1. 1.100 libpostproc 53. 0.100 / 53. 0.100 Input #0, matroska,webm, from 'Original51.mkv': Metadata: ENCODER : Lavf55.33.100 Duration: 00:00:46.63, start: 0.000000, bitrate: 605 kb/s Stream #0:0: Video: h264 (High), yuv420p, 800x600 [SAR 1:1 DAR 4:3], 8 fps, 8 tbr, 1k tbn, 16 tbc (default) Stream #0:1: Audio: aac, 44100 Hz, stereo, fltp (default) File 'test.webm' already exists. Overwrite ? [y/N] y [libvpx @ 037d47e0] v1.3.0 Output #0, webm, to 'test.webm': Metadata: encoder : Lavf56.4.101 Stream #0:0: Video: vp8 (libvpx), yuv420p, 800x600 [SAR 1:1 DAR 4:3], q=-1--1, 200 kb/s, 8 fps, 1k tbn, 8 tbc (default) Metadata: encoder : Lavc56.1.100 libvpx Stream #0:1: Audio: vorbis, 44100 Hz, stereo, fltp (default) Metadata: encoder : Lavc56.1.100 vorbis Stream mapping: Stream #0:0 -> #0:0 (h264 (native) -> vp8 (libvpx)) Stream #0:1 -> #0:1 (aac (native) -> vorbis (native)) Press [q] to stop, [?] for help frame= 373 fps= 49 q=0.0 Lsize= 944kB time=00:00:46.62 bitrate= 165.8kbits/s video:421kB audio:503kB subtitle:0kB other streams:0kB global headers:3kB muxing overhead: 2.077811% }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/3955> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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