#4786 closed defect (fixed)
MLP misdetected for dvd_pcm
Reported by: | Alexander E. Patrakov | Owned by: | |
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Priority: | normal | Component: | avformat |
Version: | git-master | Keywords: | mpegps mlp |
Cc: | Blocked By: | ||
Blocking: | Reproduced by developer: | yes | |
Analyzed by developer: | no |
Description
Summary of the bug:
How to reproduce:
$ ffprobe ATS_01_1.AOB ffprobe version 2.7.2 Copyright (c) 2007-2015 the FFmpeg developers built with gcc 5.2.0 (GCC) configuration: --prefix=/usr --disable-debug --disable-static --disable-stripping --enable-avisynth --enable-avresample --enable-fontconfig --enable-gnutls --enable-gpl --enable-libass --enable-libbluray --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libv4l2 --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-shared --enable-version3 --enable-x11grab libavutil 54. 27.100 / 54. 27.100 libavcodec 56. 41.100 / 56. 41.100 libavformat 56. 36.100 / 56. 36.100 libavdevice 56. 4.100 / 56. 4.100 libavfilter 5. 16.101 / 5. 16.101 libavresample 2. 1. 0 / 2. 1. 0 libswscale 3. 1.101 / 3. 1.101 libswresample 1. 2.100 / 1. 2.100 libpostproc 53. 3.100 / 53. 3.100 Input #0, mpeg, from 'ATS_01_1.AOB': Duration: 00:00:22.96, start: 0.007333, bitrate: 3568 kb/s Stream #0:0[0xa1]: Audio: pcm_dvd, 48000 Hz, 6 channels, s16, 4608 kb/s
However the stream is actually MLP, not PCM, and is playable by VLC.
Attachments (2)
Change History (6)
by , 9 years ago
Attachment: | ATS_01_1.AOB added |
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comment:1 by , 9 years ago
by , 9 years ago
Attachment: | patchmpegmlp.diff added |
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comment:2 by , 9 years ago
Component: | undetermined → avformat |
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Keywords: | mpegps mlp added |
Reproduced by developer: | set |
Status: | new → open |
Version: | unspecified → git-master |
I just committed a patch that allows forcing mlp with the following command line:
$ ffmpeg -acodec mlp -i ATS_01_1.AOB out.wav
PoC attached that matches my original patches for issue 1731 on the mailing list:
http://thread.gmane.org/gmane.comp.video.ffmpeg.devel/142613
http://thread.gmane.org/gmane.comp.video.ffmpeg.devel/142629
comment:3 by , 8 years ago
Resolution: | → fixed |
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Status: | open → closed |
Should be fixed in fb9036b3142e06631a70810c3d779f8e2d9f180c - thank you for the sample!
comment:4 by , 19 months ago
I will just point out that this is real mlp (after -c copy you see 0xF8726FBB) and has metadata that gives 24 bit (TrueHD does not have it).
Yes, it is not lossless with what Plex +EAE.exe produce. WHY??
Plex Transcoder.exe -i ATS_01_1.AOB -c:a pcm_s24le fe2e121.wav
ffmpeg.exe -i ATS_01_1.AOB -c:a pcm_s24le daqwdaw1.wav
well, the output in the initial report was for a 10-megabyte sample, and the first 2 megabytes are attached because of the file size limit in this instance of Trac.