[vdr] HDTV -> mpeg4

Prakash Punnoor prakashp at arcor.de
Mon Mar 28 16:47:08 CEST 2005


Ulf Elsner schrieb:
> Am Montag, 28. März 2005 15:24 schrieb Prakash Punnoor:
> 
> 
>>What kind of CPU do you have and how high is CPU usage. I was just playing
>>around with xvid (I have no experience with it) an mencoder, but 1080i is
>>not playable for me anymore. I have an Athlon XP at 2.2GHz. The mpeg2 file is
>>no problem though. I will try your setting, though.
> 
> well I've got an AMD Athlon64 3000+, CPU load during encoding is 100% ;-),
> while replaying I got different values with gmplayer (about 50 to 60%) and 
> xine (100%, dropping frames, sometimes missing audio).
> With the original mpeg2-file (*.vdr), xine is able to play audio too, but 
> CPU-load is similar.
> So far I don't know why xine is 'slower'.
> It's the first attempt to record and play HDTV-material.

My observations are the same: xine needs a lot more CPU to play hd content.
Nevertheless I fried your ffmpeg paramters and beside the need to patch fourcc
for me, it is not better. Even worse: I suggest using xvid, as picture quality
is worse with ffmpeg's codec for me.

Interesting that your athlon64 has so much more horses than my miserable xp -
even though my XP should have a higher clock rate than your cpu. :-( Or are
you hw accelerating your output? Ie I only have a geforce4 ti4200 which cannot
do idct and even gets slower when doing mc.

Are using a 32 bit or 64 bit os?

Cheers

-- 
Prakash Punnoor

formerly known as Prakash K. Cheemplavam

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