[linux-dvb] mpeg4 fta

Rudy Zijlstra rudy at edsons.demon.nl
Tue Jan 10 14:03:15 CET 2006


On Tue, 10 Jan 2006, Christophe Thommeret wrote:

> Le Mardi 10 Janvier 2006 10:48, Rudy Zijlstra a écrit :
>
>> Depends on the quality and the resolution. SD encoded in H.264 your xp2600
>> should handle. HD it will not handle. Although it also depends a bit on
>> which H.264 tools were used during encoding...
>
> That's definitely HD:
> Input #0, mpegts, from 'tps-h264.m2t':
>  Duration: 00:00:23.1, start: 5976.576389, bitrate: 11170 kb/s
>  Stream #0.0[0x78], 50.00 fps(r): Video: h264, yuv420p, 1920x1088
>  Stream #0.1[0x82](eng): Audio: mp2, 48000 Hz, stereo, 256 kb/s
>
> HD 1920x1088 25fps mpeg2 takes about 90% on my xp2600, so i would need a
> xp5200 to handle that 50fps h264, right? Or does mpeg4 decoding coast a lot
> more than mpeg2?
>
Hmm, considering that resolution is almost always interlaced, i wonder 
whether that 50fps is a translation error.... For the moment very view 
displays can handle 1080p.

H.264 (or MPEG4 part 10) decoding costs more than MPEG2 decoding does.

divx is also part of the MPEG4 spec, and decoding that is way easier.

Rudy


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