[MPlayer-users] How to identify missing video-codec?

[Ivan Kowalenko]

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On Apr 20, 2006, at 23.54, Corey Hickey wrote:

> Ivan Kowalenko wrote:
>>>>>> Playing a two and a half minute long trailer (Apple produced,  
>>>>>> H. 264, 480p at 2.35:1), MPlayer produced a lot of "Error  
>>>>>> while  decoding frame!"
>>>>> Do you have framedrop enabled in an mplayer config file somewhere?
>>>> I enabled it in the command line. I've never had a wonderful   
>>>> experience with H.264 on my laptop, in terms of decoding it,  
>>>> and  I'd never used MPlayer for H.264 playback, so I used it to  
>>>> be on  the safe side.  I guess if that's causing the problem,  
>>>> then  problem solved!
>>> If you're having performance problems with h.264 decoding (it  
>>> needs  a hefty CPU compared to other formats),
>> Well, I only have 1GHz to work with, and PPC isn't the best  
>> supported  platform. However, when I run the trailer with  
>> QuickTime, I have next  to no problems
>
> QuickTime does frame dropping -- you may notice a bit of jerkiness  
> if you look closely. In any case, as far as I know (somebody  
> correct me if I'm wrong) libavcodec doesn't yet have enough PowerPC  
> optimizations to run as well as QuickTime.... but Apple's decoder  
> supports only a very limited part of h.264, as was discussed  
> elsewhere in this thread.

I've noticed that, that would be the "next to no problems" (given  
that the jerkiness usually subsides pretty quickly, even in full  
screen). However, the output is generally smoother than the MPlayer  
output. This I attribute to the lack of PowerPC optimizations (so far).

> By the way, please include a blank line between quoted text and  
> your response. You did in the part immediately below, but not  
> elsewhere.

Oops, my bad. I usually do, but I guess I got lazy or something this  
time.

>>> try the skiploopfilter option. See the man page. For example:
>>>
>>> $ mplayer file.mov -lavdopts skiploopfilter=nonref
>> You know, I find it interesting that I make mention of something,  
>> and  all of a sudden, I'm receiving more help for a problem with  
>> something  I barely use than the person who started the thread ;)
>
> Well, I help out when there's some good combination of:
> - interesting
> - easy to answer
> - the problem is my fault
>
>
> -Corey
>
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> http://mplayerhq.hu/mailman/listinfo/mplayer-users

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