[MPlayer-users] Mplayer performance on Upgraded PowerBook Wallstreet

[Ivan Kowalenko]

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On Jul 18, 2006, at 13.41, larrystotler at netscape.net wrote:

>
>
> -----Original Message-----
> From: Ivan Kowalenko <ivan.kowalenko at gmail.com>
>
>> What? I don't think MPlayer even knows what that chunk 'o hardware  
>> is (let alone me). MPlayer tends to do >everything in software.  
>> The only hardware it really uses is XvMC, and that's not supported  
>> on ATI cards. I'm not sure OpenGL would work too well for you (and  
>> I doubt that would have anything to do with this decoder card  
>> you're talking about)
>
> I have read that MPlayer would make use of the hardware MPEG2  
> decoders if available, but I do not have one, and have also seen  
> stuff from Googling that say it doesn't seem to use it, so I dunno.

It does, but the MPEG-2 decoders that it is known to use are XvMC  
(which isn't really an MPEG-2 decoder, but offloads some MPEG-2  
decoding parts to the GPU), and the Hauppauge PVR-350's On-board  
MPEG-2 decoder. Given that this is a piece of Apple hardware (and  
likely unique to the Wallstreet PB, and never seen the light of day  
on an x86 system), MPlayer probably doesn't even know it exists.

>> More than likely, yes. Assuming you have a compiler that does  
>> AltiVec compiling decently (I've heard some >versions of the GCC  
>> don't do so well with that).
>
> For some reason, GCC does compile in the altivec.  I also tried  
> compiling it with --disable-altivec(saw it on a site somewhere as a  
> suggestion) and it made no difference.

It IS possible that your G3 does have some AltiVec support, though  
probably older. If the code with AltiVec enabled functions, then you  
probably do have AltiVec.

>> This is really rather odd, given that that G3/466 should outpace  
>> your PIII/450 by a long shot. It's either serious >code  
>> inefficiencies for PowerPC, or there's something really unusual  
>> with your Wallstreet.
>
> Yeah, but the P-III does have SSE, which AFAIK, MPlayer will use  
> for decoding.  Since the Altivec is basically like SSE, maybe that  
> would be a difference.  Anyway, thanx for the reply.

Good luck.
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