#3256 closed defect (fixed)
FFMPEG SVQ3 Matroska remux produces unplayable output (FFPlay don't want to play SVQ3 MKV output)
| Reported by: | Vika Apelsinova | Owned by: | |
|---|---|---|---|
| Priority: | important | Component: | avformat |
| Version: | git-master | Keywords: | mkv svq3 regression |
| Cc: | Michael Niedermayer | Blocked By: | |
| Blocking: | Reproduced by developer: | yes | |
| Analyzed by developer: | yes |
Description
FFMPEG SVQ3 Matroska remux produces unplayable output (FFPlay don't want to play SVQ3 MKV output)
MediaInfo log for input.mov:
General Complete name : input.mov Format : QuickTime Format/Info : Original Apple specifications Format settings : Compressed header File size : 21.5 MiB Duration : 3mn 46s Overall bit rate : 794 Kbps Encoded date : UTC 2002-02-05 18:21:59 Tagged date : UTC 2002-02-05 18:22:15 Writing application : Encoded with Cleaner 5 Writing library : Apple QuickTime Video ID : 1 Format : Sorenson 3 Codec ID : SVQ3 Codec ID/Info : Sorenson Media Video 3 (Apple QuickTime 5) Duration : 3mn 46s Bit rate : 745 Kbps Width : 480 pixels Height : 280 pixels Display aspect ratio : 1.714 Frame rate mode : Constant Frame rate : 25.000 fps Bits/(Pixel*Frame) : 0.222 Stream size : 20.1 MiB (94%) Title : Gestore Apple Media Video Language : English Encoded date : UTC 2002-02-05 16:51:31 Tagged date : UTC 2002-02-05 18:22:15 Audio ID : 2 Format : Qdesign 2 Codec ID : QDM2 Codec ID/Info : QDesign Music 2 Duration : 3mn 46s Bit rate mode : Constant Bit rate : 176.4 Kbps Channel count : 2 channels Sampling rate : 22.05 KHz Bit depth : 16 bits Stream size : 4.77 MiB (22%) Title : Gestore Apple Media Suono Language : English Encoded date : UTC 2002-02-05 16:51:31 Tagged date : UTC 2002-02-05 18:22:15
ffmpeg -v 9 -loglevel 99 -i input.mov
ffmpeg version N-59433-g4aa9c91 Copyright (c) 2000-2013 the FFmpeg developers
built on Dec 29 2013 22:07:20 with gcc 4.8.2 (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-libcaca --enable-libfreetyp
e --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --ena
ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-l
ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libsp
eex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aa
cenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavp
ack --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
libavutil 52. 59.100 / 52. 59.100
libavcodec 55. 47.100 / 55. 47.100
libavformat 55. 22.100 / 55. 22.100
libavdevice 55. 5.102 / 55. 5.102
libavfilter 4. 0.103 / 4. 0.103
libswscale 2. 5.101 / 2. 5.101
libswresample 0. 17.104 / 0. 17.104
libpostproc 52. 3.100 / 52. 3.100
Splitting the commandline.
Reading option '-v' ... matched as option 'v' (set logging level) with argument
'9'.
Reading option '-loglevel' ... matched as option 'loglevel' (set logging level)
with argument '99'.
Reading option '-i' ... matched as input file with argument 'input.mov'.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option v (set logging level) with argument 9.
Successfully parsed a group of options.
Parsing a group of options: input file input.mov.
Successfully parsed a group of options.
Opening an input file: input.mov.
[mov,mp4,m4a,3gp,3g2,mj2 @ 00000000003b6a80] Format mov,mp4,m4a,3gp,3g2,mj2 prob
ed with size=2048 and score=100
[mov,mp4,m4a,3gp,3g2,mj2 @ 00000000003b6a80] Before avformat_find_stream_info()
pos: 26341 bytes read:32768 seeks:0
[qdm2 @ 0000000002750920] size: 36
[mov,mp4,m4a,3gp,3g2,mj2 @ 00000000003b6a80] max_analyze_duration 5000000 reache
d at 5015510 microseconds
[mov,mp4,m4a,3gp,3g2,mj2 @ 00000000003b6a80] After avformat_find_stream_info() p
os: 421817 bytes read:425984 seeks:0 frames:169
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'input.mov':
Metadata:
creation_time : 2002-02-05 18:21:59
encoder : Encoded with Cleaner 5
encoder-eng : Encoded with Cleaner 5
Duration: 00:03:46.68, start: 0.000000, bitrate: 794 kb/s
Stream #0:0(eng), 113, 1/600: Video: svq3 (SVQ3 / 0x33515653), yuvj420p, 480
x280, 1/600, 745 kb/s, 25 fps, 25 tbr, 600 tbn, 600 tbc (default)
Metadata:
creation_time : 2002-02-05 18:21:59
handler_name : Apple Alias Data Handler
Stream #0:1(eng), 56, 1/22050: Audio: qdm2 (QDM2 / 0x324D4451), 22050 Hz, st
ereo, s16, 48 kb/s (default)
Metadata:
creation_time : 2002-02-05 18:21:59
handler_name : Apple Alias Data Handler
Successfully opened the file.
At least one output file must be specified
[AVIOContext @ 00000000003b7020] Statistics: 425984 bytes read, 0 seeks
ffmpeg -i input.mov -vcodec copy -acodec copy output.mkv
ffmpeg version N-59433-g4aa9c91 Copyright (c) 2000-2013 the FFmpeg developers
built on Dec 29 2013 22:07:20 with gcc 4.8.2 (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-libcaca --enable-libfreetyp
e --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --ena
ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-l
ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libsp
eex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aa
cenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavp
ack --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
libavutil 52. 59.100 / 52. 59.100
libavcodec 55. 47.100 / 55. 47.100
libavformat 55. 22.100 / 55. 22.100
libavdevice 55. 5.102 / 55. 5.102
libavfilter 4. 0.103 / 4. 0.103
libswscale 2. 5.101 / 2. 5.101
libswresample 0. 17.104 / 0. 17.104
libpostproc 52. 3.100 / 52. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'input.mov':
Metadata:
creation_time : 2002-02-05 18:21:59
encoder : Encoded with Cleaner 5
encoder-eng : Encoded with Cleaner 5
Duration: 00:03:46.68, start: 0.000000, bitrate: 794 kb/s
Stream #0:0(eng): Video: svq3 (SVQ3 / 0x33515653), yuvj420p, 480x280, 745 kb
/s, 25 fps, 25 tbr, 600 tbn, 600 tbc (default)
Metadata:
creation_time : 2002-02-05 18:21:59
handler_name : Apple Alias Data Handler
Stream #0:1(eng): Audio: qdm2 (QDM2 / 0x324D4451), 22050 Hz, stereo, s16, 48
kb/s (default)
Metadata:
creation_time : 2002-02-05 18:21:59
handler_name : Apple Alias Data Handler
Output #0, matroska, to 'output.mkv':
Metadata:
encoder-eng : Encoded with Cleaner 5
encoder : Lavf55.22.100
Stream #0:0(eng): Video: svq3 (SVQ3 / 0x33515653), yuvj420p, 480x280, q=2-31
, 745 kb/s, 25 fps, 1k tbn, 600 tbc (default)
Metadata:
creation_time : 2002-02-05 18:21:59
handler_name : Apple Alias Data Handler
Stream #0:1(eng): Audio: qdm2 ([255][255][255][255] / 0xFFFFFFFF), 22050 Hz,
stereo, 48 kb/s (default)
Metadata:
creation_time : 2002-02-05 18:21:59
handler_name : Apple Alias Data Handler
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame= 5667 fps=0.0 q=-1.0 Lsize= 22021kB time=00:03:46.64 bitrate= 795.9kbits
/s
video:20623kB audio:1325kB subtitle:0 global headers:0kB muxing overhead 0.33352
5%
MediaInfo log for output.mkv:
General Unique ID : 92083823330401757795842791738927682089 (0x4546B303A87A81C61B6345712E171229) Complete name : output.mkv Format : Matroska Format version : Version 4 / Version 2 File size : 21.5 MiB Duration : 3mn 46s Overall bit rate : 796 Kbps Writing application : Lavf55.22.100 Writing library : Lavf55.22.100 Video ID : 1 Format : V_QUICKTIME Codec ID : V_QUICKTIME Duration : 3mn 46s Width : 480 pixels Height : 280 pixels Display aspect ratio : 1.714 Frame rate mode : Constant Frame rate : 25.000 fps Language : English Default : Yes Forced : No Encoded date : UTC 2002-02-05 18:21:59 HANDLER_NAME : Apple Alias Data Handler Audio ID : 2 Format : A_QUICKTIME/QDM2 Codec ID : A_QUICKTIME/QDM2 Duration : 3mn 46s Channel count : 2 channels Sampling rate : 22.05 KHz Bit depth : 16 bits Language : English Default : Yes Forced : No Encoded date : UTC 2002-02-05 18:21:59 HANDLER_NAME : Apple Alias Data Handler
ffmpeg -v 9 -loglevel 99 -i output.mkv
ffmpeg version N-59433-g4aa9c91 Copyright (c) 2000-2013 the FFmpeg developers
built on Dec 29 2013 22:07:20 with gcc 4.8.2 (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-libcaca --enable-libfreetyp
e --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --ena
ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-l
ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libsp
eex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aa
cenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavp
ack --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
libavutil 52. 59.100 / 52. 59.100
libavcodec 55. 47.100 / 55. 47.100
libavformat 55. 22.100 / 55. 22.100
libavdevice 55. 5.102 / 55. 5.102
libavfilter 4. 0.103 / 4. 0.103
libswscale 2. 5.101 / 2. 5.101
libswresample 0. 17.104 / 0. 17.104
libpostproc 52. 3.100 / 52. 3.100
Splitting the commandline.
Reading option '-v' ... matched as option 'v' (set logging level) with argument
'9'.
Reading option '-loglevel' ... matched as option 'loglevel' (set logging level)
with argument '99'.
Reading option '-i' ... matched as input file with argument 'output.mkv'.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option v (set logging level) with argument 9.
Successfully parsed a group of options.
Parsing a group of options: input file output.mkv.
Successfully parsed a group of options.
Opening an input file: output.mkv.
[matroska,webm @ 00000000003a6a80] Format matroska,webm probed with size=2048 an
d score=100
[matroska,webm @ 00000000003a6a80] Unknown/unsupported AVCodecID V_QUICKTIME.
st:0 removing common factor 1000000 from timebase
st:1 removing common factor 1000000 from timebase
[matroska,webm @ 00000000003a6a80] Before avformat_find_stream_info() pos: 1023
bytes read:32768 seeks:0
[matroska,webm @ 00000000003a6a80] parser not found for codec none, packets or t
imes may be invalid.
[matroska,webm @ 00000000003a6a80] parser not found for codec qdm2, packets or t
imes may be invalid.
[qdm2 @ 0000000002750a20] size: 36
[matroska,webm @ 00000000003a6a80] parser not found for codec none, packets or t
imes may be invalid.
[matroska,webm @ 00000000003a6a80] parser not found for codec qdm2, packets or t
imes may be invalid.
[matroska,webm @ 00000000003a6a80] max_analyze_duration 5000000 reached at 50000
00 microseconds
[matroska,webm @ 00000000003a6a80] Could not find codec parameters for stream 0
(Video: none, 480x280, 1/1000): unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
[matroska,webm @ 00000000003a6a80] After avformat_find_stream_info() pos: 458831
bytes read:491520 seeks:0 frames:179
Input #0, matroska,webm, from 'output.mkv':
Metadata:
ENCODER-eng : Encoded with Cleaner 5
ENCODER : Lavf55.22.100
Duration: 00:03:46.68, start: 0.000000, bitrate: 795 kb/s
Stream #0:0(eng), 125, 1/1000: Video: none, 480x280, 1/1000, SAR 1:1 DAR 12:
7, 25 fps, 25 tbr, 1k tbn, 1k tbc (default)
Metadata:
CREATION_TIME : 2002-02-05 18:21:59
LANGUAGE : eng
HANDLER_NAME : Apple Alias Data Handler
Stream #0:1(eng), 54, 1/1000: Audio: qdm2, 22050 Hz, stereo, s16, 48 kb/s (d
efault)
Metadata:
CREATION_TIME : 2002-02-05 18:21:59
LANGUAGE : eng
HANDLER_NAME : Apple Alias Data Handler
Successfully opened the file.
At least one output file must be specified
[AVIOContext @ 00000000003a7020] Statistics: 491520 bytes read, 0 seeks
ffplay -i output.mkv
ffplay version N-59433-g4aa9c91 Copyright (c) 2003-2013 the FFmpeg developers
built on Dec 29 2013 22:07:20 with gcc 4.8.2 (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-libcaca --enable-libfreetyp
e --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --ena
ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-l
ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libsp
eex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aa
cenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavp
ack --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
libavutil 52. 59.100 / 52. 59.100
libavcodec 55. 47.100 / 55. 47.100
libavformat 55. 22.100 / 55. 22.100
libavdevice 55. 5.102 / 55. 5.102
libavfilter 4. 0.103 / 4. 0.103
libswscale 2. 5.101 / 2. 5.101
libswresample 0. 17.104 / 0. 17.104
libpostproc 52. 3.100 / 52. 3.100
[matroska,webm @ 000000000036b380] Unknown/unsupported AVCodecID V_QUICKTIME.
[matroska,webm @ 000000000036b380] Could not find codec parameters for stream 0
(Video: none, 480x280): unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, matroska,webm, from 'output.mkv':
Metadata:
ENCODER-eng : Encoded with Cleaner 5
ENCODER : Lavf55.22.100
Duration: 00:03:46.68, start: 0.000000, bitrate: 795 kb/s
Stream #0:0(eng): Video: none, 480x280, SAR 1:1 DAR 12:7, 25 fps, 25 tbr, 1k
tbn, 1k tbc (default)
Metadata:
CREATION_TIME : 2002-02-05 18:21:59
LANGUAGE : eng
HANDLER_NAME : Apple Alias Data Handler
Stream #0:1(eng): Audio: qdm2, 22050 Hz, stereo, s16, 48 kb/s (default)
Metadata:
CREATION_TIME : 2002-02-05 18:21:59
LANGUAGE : eng
HANDLER_NAME : Apple Alias Data Handler
No codec could be found with id 0
You can download input.mov, output.mkv and log files for future analysis here: http://goo.gl/6hHwsA
Change History (18)
follow-up: 3 comment:1 by , 11 years ago
comment:2 by , 11 years ago
| Analyzed by developer: | set |
|---|---|
| Component: | undetermined → avformat |
| Keywords: | mkv svq3 regression added |
| Reproduced by developer: | set |
| Status: | new → open |
| Version: | → git-master |
From FFmpeg PoV, it is indeed a regression since 5d2f89a2 but the previous behaviour was also wrong (not specification-compliant), just consistent. The necessary changes are:
- Fixing the matroska muxer so it copies
mov_write_video_tag()to write compliant files - Fixing the matroska demuxer so it reads these files.
$ mkvmerge fate-suite/svq3/Vertical400kbit.sorenson3.mov -o out.mkv
$ ffmpeg -i out.mkv ffmpeg version N-59439-g3cc0f33 Copyright (c) 2000-2013 the FFmpeg developers built on Dec 30 2013 12:50:39 with gcc 4.7 (SUSE Linux) configuration: --enable-gpl libavutil 52. 59.100 / 52. 59.100 libavcodec 55. 47.100 / 55. 47.100 libavformat 55. 22.101 / 55. 22.101 libavdevice 55. 5.102 / 55. 5.102 libavfilter 4. 0.103 / 4. 0.103 libswscale 2. 5.101 / 2. 5.101 libswresample 0. 17.104 / 0. 17.104 libpostproc 52. 3.100 / 52. 3.100 [matroska,webm @ 0x2808100] Unknown/unsupported AVCodecID V_QUICKTIME. [matroska,webm @ 0x2808100] Could not find codec parameters for stream 0 (Video: none ([0][0][0]l / 0x6C000000), 320x240): unknown codec Consider increasing the value for the 'analyzeduration' and 'probesize' options out.mkv: could not find codec parameters
follow-up: 4 comment:3 by , 11 years ago
Replying to cehoyos:
Is this a regression?
Yes, version 20120804-git-f857465 works fine, but version 20120810-git-633b90c has this bug.
It happen beetween commit f85746509ca8b727d97ff801a63a22f81fd27a0c and 633b90ca8d5fbdac4e54b0d6b054e273b3a5efa5.
comment:4 by , 11 years ago
Replying to Vika Apelsinova:
version 20120804-git-f857465 works fine
Not really, the output file was invalid (and can not be decoded with vlc).
comment:5 by , 11 years ago
Any progress?
I've tested remuxing the video using ffmpeg-20120804-git-f857465, ffmpeg-20140109-git-c0a33c4, mkvtoolnix-6.6.0 and mkvtoolnix-6.7.0, and playing outputs using ffplay-20140109-git-c0a33c4, vlc-2.1.2 and mplayer-r36541+g43f9255.
File name : output-ffmpeg-20120804-git-f857465.mkv File size : 22 547 856 bytes
Video ID : 1 Format : V_QUICKTIME Codec ID : V_QUICKTIME Audio ID : 2 Format : A_QUICKTIME/QDM2 Codec ID : A_QUICKTIME/QDM2
FFPlay: video plays, audio plays. VLC: video not plays, audio not plays. MPlayer: video plays, audio plays.
File name : output-ffmpeg-20140109-git-c0a33c4.mkv File size : 22 549 454 bytes
Video ID : 1 Format : V_QUICKTIME Codec ID : V_QUICKTIME Audio ID : 2 Format : A_QUICKTIME/QDM2 Codec ID : A_QUICKTIME/QDM2
FFPlay: video not plays, audio plays. VLC: video not plays, audio not plays. MPlayer: video not plays, audio stuck in loop (i.e. not plays).
File name : output-mkvtoolnix-6.6.0.mkv File size : 30 548 206 bytes
Video ID : 1 Format : V_QUICKTIME Codec ID : V_QUICKTIME Audio ID : 2 Format : A_QUICKTIME Codec ID : A_QUICKTIME
FFPlay: video not plays, audio not plays. VLC: video plays, audio not plays. MPlayer: video not plays, plays noise (i.e. not plays).
File name : output-mkvtoolnix-6.7.0.mkv File size : 22 536 960
Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Codec ID : V_MS/VFW/FOURCC / SVQ1 Codec ID/Info : Sorenson Media Video 1 (Apple QuickTime 3) Codec ID/Hint : Sorenson 1 Audio ID : 2 Format : A_QUICKTIME Codec ID : A_QUICKTIME
FFPlay: video not plays, audio not plays. VLC: video not plays, audio not plays. MPlayer: video not plays, plays noise (i.e. not plays).
You can download output-ffmpeg-20120804-git-f857465.mkv, output-ffmpeg-20140109-git-c0a33c4.mkv, output-mkvtoolnix-6.6.0.mkv and output-mkvtoolnix-6.7.0.mkv files for future analysis here: https://goo.gl/6hHwsA (direct links provided by Google Drive Hosting, TLS 1.2).
comment:6 by , 11 years ago
The bug was fixed in MKVToolNix by https://github.com/mbunkus/mkvtoolnix/commit/6fbbd882d2b0819b2e3a4d4fc2880f94fc985839, but FFPlay and VLC still don't want to play output.
Not really, the output file was invalid (and can not be decoded with vlc).
Moritz Bunkus a.k.a. mosu wrote:
That VLC doesn't play audio doesn't mean that mkvmerge is to blame. Quite the other way around. VLC doesn't support A_QUICKTIME at all. Just do a recursive grep for A_QUICKTIME on VLC's sources and you'll see for yourself. As for the CodecID. mkvmerge has used A_QUICKTIME since 2009. Before it used A_QUICKTIME/QDMx. Back then there was a decision that appending the codec type to the A_QUICKTIME string was superfluous as the FourCC is contained in CodecPrivate for both A_QUICKTIME and A_QUICKTIME/QDMx. This is very similar to how V_QUICKTIME works. The CodecPrivate contains the content of the STSD atom. Unfortunately we totally forgot to update the specs page, which is why it doesn't list A_QUICKTIME. I will update the specs page tonight. So if you want to fix ffmpeg you should do the following: 1. In the demuxing part: treat A_QUICKTIME and A_QUICKTIME/wxyz identically. Get the FourCC from CodecPrivate (should be bytes 4 - 7 starting at 0). 2. In the muxing part: simply don't write A_QUICKTIME/wxyz but just A_QUICKTIME.
follow-up: 13 comment:7 by , 11 years ago
ffplay can now play
the video from output-mkvtoolnix-6.6.0.mkv and
the audio from output-mkvtoolnix-6.7.0.mkv
the video in output-mkvtoolnix-6.7.0.mkv is simply broken, its SVQ3 but marked as SVQ1, you can play it somewhat with -vcodec svq3
comment:8 by , 11 years ago
ffplay now also plays the video from output-ffmpeg-20140109-git-c0a33c4.mkv
follow-up: 15 comment:9 by , 11 years ago
ffplay can now play the video from output-mkvtoolnix-6.6.0.mkv
Why only video?
Ok, everything is clear with FFPlay (decoding). What with encoding?
The output file is still invalid?
Why FFMPEG's output uses deprecated "A_QUICKTIME/QDM2" as Audio Codec ID insted of just "A_QUICKTIME" like mosu wrote?
comment:12 by , 11 years ago
Why FFMPEG's output uses deprecated "A_QUICKTIME/QDM2" as Audio Codec ID insted of just "A_QUICKTIME" like mosu wrote?
Probably because nobody bothered to update it. In the worst case, you'll have to propose a patch and send it to the ffmpeg-devel mailing list.
follow-up: 14 comment:13 by , 11 years ago
comment:14 by , 11 years ago
Replying to Vika Apelsinova:
Replying to compn:
why are you muxing svq3 into mkv ?
Why not? :-/
because.
follow-up: 16 comment:15 by , 11 years ago
Replying to Vika Apelsinova:
ffplay can now play the video from output-mkvtoolnix-6.6.0.mkv
Why only video?
Which tool or player can play the audio ?
If nothing can play it, then most likely the issue is with the file
Ok, everything is clear with FFPlay (decoding). What with encoding?
The output file is still invalid?
Why FFMPEG's output uses deprecated "A_QUICKTIME/QDM2" as Audio Codec ID insted of just "A_QUICKTIME" like mosu wrote?
Which application/player supports A_QUICKTIME?
mosu said vlc does not and if i understood correctly the spec did not list A_QUICKTIME either.
FFmpeg should create files that can be played by most players/applications. We also should conform to the spec. If from 2 revissions of the spec one works with many players and one with few, we should prefer the one that works with many.
Dont hesitate to correct me if one of my assumtations is wrong
follow-up: 17 comment:16 by , 11 years ago
| Cc: | added |
|---|---|
| Resolution: | → fixed |
| Status: | open → closed |
Replying to michael:
Replying to Vika Apelsinova:
ffplay can now play the video from output-mkvtoolnix-6.6.0.mkv
Why only video?
Which tool or player can play the audio ?
If nothing can play it, then most likely the issue is with the file
Ok, everything is clear with FFPlay (decoding). What with encoding?
The output file is still invalid?
Why FFMPEG's output uses deprecated "A_QUICKTIME/QDM2" as Audio Codec ID insted of just "A_QUICKTIME" like mosu wrote?
Which application/player supports A_QUICKTIME?
mosu said vlc does not and if i understood correctly the spec did not list A_QUICKTIME either.
FFmpeg should create files that can be played by most players/applications. We also should conform to the spec. If from 2 revissions of the spec one works with many players and one with few, we should prefer the one that works with many.
Dont hesitate to correct me if one of my assumtations is wrong
just tried to replace A_QUICKTIME/QDM2 by A_QUICKTIME, but the resulting file cannot be played by any player i tried. So its not that simple
Also please open a seperate ticket for the QDM2 issue, this one is about SVQ3 remux not playing in ffplay (which is fixed thus closing it)
dont hesitate to reopen this ticket if svq3 isnt fixed, but please lets move qdm2 to a seperate ticket, so as to keep things easy to manage as these are 2 seperate issues
comment:17 by , 11 years ago
Replying to michael:
Replying to michael:
Replying to Vika Apelsinova:
ffplay can now play the video from output-mkvtoolnix-6.6.0.mkv
Why only video?
Which tool or player can play the audio ?
If nothing can play it, then most likely the issue is with the file
Yes, it's the issue with the file. QDM2 audio in files generated by mkvtoolnix-6.6.0 are broken (this bug was fixed in mkvtoolnix-6.7.0). You don't have to fix FFMPEG for them.
and if i understood correctly the spec did not list A_QUICKTIME either.
Please look at http://matroska.org/technical/specs/codecid/index.html. A_QUICKTIME/ Codec ID is deprecated in favor of A_QUICKTIME (without a trailing codec name).
VLC does not support neither Matroska A_QUICKTIME nor A_QUICKTIME/ Codec IDs at all. I've opened https://trac.videolan.org/vlc/ticket/11038 for this issue.
please lets move qdm2 to a seperate ticket
OK, I'll open new ticket for using A_QUICKTIME instead of deprecated A_QUICKTIME/ Codec IDs, when https://trac.videolan.org/vlc/ticket/11038 is closed.
comment:18 by , 11 years ago
OK, https://trac.videolan.org/vlc/ticket/11038 is closed, I've opened #3602.
Is this a regression?