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[MPlayer-users] Problems with mplayer on PPC


To: mplayer-users@xxxxxxxxxxxx
Subject: [MPlayer-users] Problems with mplayer on PPC
From: Rogério Brito <linuxconsult@xxxxxxxxxxxx>
Date: Wed Apr 24 01:05:02 2002
User-agent: Mutt/1.3.28i

        Dear all (see attached files for complete information),

        I'm using mplayer on a PowerPC notebook (an iBook 2, 600MHz)
        and it seems that mplayer has some problems with it. Here are
        the problems that I'm seeing (all this with the 0.90pre1):


        1 - It seems that mplayer has problems with these machines
            being big-endian when playing PCM audio (MP3 is fine):
            when I extract a track from a CD, it is played correctly
            in a x86 box, but it plays as whitenoise in this iBook.
            xmms plays the same file without problems on the iBook.

            If, on the other hand, I byte-swap it with sox, the file
            sounds like white noise in x86, xmms plays it that way in
            this iBook, but mplayer plays it fine.

            It seems that mplayer doesn't have problems playing mp3
            files created from WAV files.

            Attached is a diff of mplayer's output playing the same
            mp3 file on x86 and ppc. Notice that there are significant
            differences.

            Is a more verbose diff needed?

            I am reporting this because videos with PCM audio has
            problems playing on the iBook and I'm trying to isolate
            the problem.

        2 - is it possible to watch WMA/WMV files at all on non-x86
            archs, with ffmpeg? I already tried passing "-vfm 5" to
            mplayer, but that doesn't work. I guess that it's just not
            available, right?

        3 - mplayer doesn't write a correct header for audiodumps on
            ppc, but it does correctly on x86. I have to strip the
            wrong header or write a headerless file and convert it
            with sox for the audio dump to be usable. I don't know if
            this is related to endianness, but I'd guess so, by the
            symptoms.  Any sample file of this wanted?


        Well, there is more, but I'll keep this short and send more
        later.  :-)



        Thanks in advance, Roger...

-- 
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Rogério Brito - linuxconsult@xxxxxxxxxxxx - http://www.ime.usp.br/~rbrito/
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Attachment: specs.txt
Description: Text document

Attachment: mplayer-wav-ibook.txt
Description: Text document

Attachment: mplayer-mp3-ibook.txt
Description: Text document

Attachment: mplayer-mp3-x86.txt
Description: Text document

Attachment: diff-same-mp3.txt
Description: Text document


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