[MPlayer-users] Bug with AltiVec and 5.1 AC3 audio

[Nick Koretsky]

On Tue, 3 Jul 2007 14:01:53 +0200
"Guillaume POIRIER" <poirierg at gmail.com> wrote:

> Hi,
> 
> On 7/3/07, KURAAKU Deibiddo <kuraaku.deibiddo at gmail.com> wrote:
> > With the latest SVN of MPlayer (libavutil / libavcodec / libavformat /
> > libpostproc revision 9467, MPlayer revision 23713), I get the following
> > errors when playing video with 5.1 audio:
> 
> I think the problem is not just the fact that the audio is 5.1: All
> the 5.1 soundtracks of my DVDs do decode correctly.

Definitely not :) This file does not have 5.1 audio, its 2 channel AC3. I
think error messages are just misleading...

> 
> > Playing [V-A]_Kenran_Butou_Sai_-_The_Mars_Daybreak_-_02_[A4822E32].mkv.
> > [mkv] Track ID 1: video (V_MPEG4/ISO/AVC) "Video", -vid 0
> > [mkv] Track ID 2: audio (A_AC3) "Japanese Audio", -aid 0, -alang jpn
> > [mkv] Track ID 3: audio (A_AAC/MPEG4/LC/SBR) "English Audio", -aid 1,
> > -alang eng
> > [mkv] Track ID 4: subtitles (S_TEXT/SSA) "Styled Subs", -sid 0, -slang
> > eng [mkv] Track ID 5: subtitles (S_TEXT/UTF8) "Unstyled Subs", -sid 1,
> > -slang eng
> > [mkv] Will play video track 1.
> > [mkv] Will display subtitle track 4.
> > Matroska file format detected.
> > VIDEO:  [avc1]  720x480  24bpp  23.975 fps    0.0 kbps ( 0.0 kbyte/s)
> > dvdsublang...v a kenran butou sai the mars daybreak 02 a4822e32 en us
> > eng english und
> > [ass] auto-open
> > [ass] Init
> > [ass] Updating font cache.
> > ==========================================================================
> > Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
> > Selected video codec: [ffh264] vfm: ffmpeg (FFmpeg H.264)
> > ==========================================================================
> > ==========================================================================
> > Opening audio decoder: [liba52] AC3 decoding with liba52
> > Using AltiVec optimized IMDCT transform
> > Checking for AltiVec resampler : 0x0000000a, 6
> > Unimplemented resampler for mode 0xA -> 6 channels conversion - Contact
> > MPlayer developers!
> > Checking for AltiVec resampler : 0x0000000a, 5
> > Unimplemented resampler for mode 0xA -> 5 channels conversion - Contact
> > MPlayer developers!
> > Checking for AltiVec resampler : 0x0000000a, 4
> > Unimplemented resampler for mode 0xA -> 4 channels conversion - Contact
> > MPlayer developers!
> > Checking for AltiVec resampler : 0x0000000a, 3
> > Unimplemented resampler for mode 0xA -> 3 channels conversion - Contact
> > MPlayer developers!
> > Checking for AltiVec resampler : 0x0000000a, 2
> > Using AltiVec optimized resampler
> > AUDIO: 48000 Hz, 2 ch, s16be, 192.0 kbit/12.50% (ratio: 24000->192000)
> > Selected audio codec: [a52] afm: liba52 (AC3-liba52)
> > AO: [macosx] 48000Hz 2ch s16be (2 bytes per sample)
> > Starting playback...
> > VDec: vo config request - 720 x 480 (preferred colorspace: Planar YV12)
> > VDec: using Planar YV12 as output csp (no 0)
> > Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
> > VO: [quartz] 720x480 => 720x540 Planar YV12  [fs]
> >
> > It will play the file, but down-samples it to 2 channels.  The error
> > message is generated here:
> > http://svn.mplayerhq.hu/mplayer/trunk/liba52/resample.c?view=diff&r1=3909&r2=3910
> 
> Please upload your sample to ftp://upload.mplayerhq.hu/MPlayer/incoming/
> 
> and I'll contact the author of this code so see what he thinks about it.
> 
> Guillaume
> -- 
> Subversion has been the most pointless project ever started
>   -- Linus Torvalds
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> 


-- 
  Nick Koretsky (nikita at public.ua.net)