[MPlayer-dvb] Better picture for mplayer-dvb

[Nico Sabbi]

Juri Haberland wrote:

>Nico Sabbi wrote:
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>>Sebastian Kemper wrote:
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>>>yesterday I tried different postprocessing filters on my dvb. I think 
>>>I read all posts to this list concerning blockiness, the dvb card not 
>>>liking bitrates higher then 5000 etc. In the beginning I thought my 
>>>VDR was too slow for say lavc=2 (AMD 1700+), but after writing the 
>>>mpegpes to disk an then replaying it the dvb still refused to play the 
>>>movie fluently. So I think there's a bitrate barrier on the dvb card.
>>>      
>>>
>>Can you explain how your computer is configured and what you are trying 
>>to do exactly?
>>Do you have a FF or a budget card? Maybe FF have such a bitrate barrier, 
>>but imo it's unlikely.
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>
>I don't know whether it's a hardware limitation or a limitation in
>either the dvb driver or mplayer itself, but if I generate mpeg1 files
>from two of my problematic AVIs with
>'mplayer -vo mpegpes:test.mpg -vop lavc,expand=(...),scale=(...) video.avi'
>and I replay those mpeg files with 'mplayer -vo mpegpes test.mpg' I get
>stuttering scenes at exactly the same place where it would stutter when
>playing the avis directly.
>If I play those files on my slower Laptop directly via
>'mplayer test.mpg' those scenes are smooth as they should be. So the
>mpegs itself are ok, but replaying them via the DVB card seems to be
>probematic. What I observed is that at those sceens which stutter, the
>bitrate goes above 2MByte/s  - on my laptop I can see up to 3.4 MByte/s
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2 MB/s means 16 Mbit/s; this may be really too high for the card (the 
previous figure of 5 Mb/s should not,
because the card is supposed to play DVD content, which may get as high 
as 9.8 Mb/s)
but I'm just guessing: I don't have a FF card.

>whereas on the DVB-machine the bitrate seems to hit a barrier at around
>2MByte/s (and yes, this machine is fast enough: P4 2.4GHz, hdparm -t:
>37MB/s).
>
>Any thoughts?
>
>Cheers,
>Juri
>
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