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

[KURAAKU Deibiddo]

Previously, I did upload a sample of a file with the same issue (a couple of
days ago), I believe the filename is
[V-A]_Kenran_Butou_Sai_-_The_Mars_Daybreak_-_01-sample.mkv (unfortunately,
the FTP is not letting me list that directory, so I cannot confirm this).

It does appear that this file is actually 2-channel; after problems with
other > 2-channel files in MPlayer (they do not play all of the channels
properly through the optical out on my PowerMac G5), I assumed that this was
a new error handling attempt for > 2-channel audio on Mac OS X.  Sorry for
the confusion.

I could provide samples of other files that fail at playback of > 2-channels
on Mac OS X if you'd like.  I wish MPlayer handled audio on Mac as well as
VLC does; for the subtitle support and command-line version, as well as the
config options to auto-play certain tracks, I really like MPlayer.

Thanks.

On 7/3/07, 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.
>
>
> > 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