AVC HD Decoding: Nero filters superior in zoomplayer - anyone else notice?

[sjchmura]

I was having a hell of a time playing back 1280x720p encoded clips with FFDSHOW+Zoomplayer (5/3/2005 version). After disabling the 264 support, and letting the nero decoder work, my CPU usuage dropped from 100% (3ghz HT) rto 50-60%. They are all playable now.

Anyone notice this?

P4 3ghz HT
1GB RAM
GF 6800GT
WinXP SP2

Latest nero, latest FFDSHOW 5/3/2005

[Leo 69]

That's true. Nero's AVC decoder is (much) faster than ffmpeg's. Do the devs notice that at all ?

http://forum.doom9.org/showthread.php?t=94919

[bond]

afaik nero's decoder drops frames when the cpu is too slow, ffdshow (libavcodec) will not do that

[Sirber]

afaik nero's decoder drops frames when the cpu is too slow, ffdshow (libavcodec) will not do that
Even if it drops frames, it should be at 100% CPU uses too.

[sjchmura]

It is not dropping frames- if you play the clip in mplayer2.exe (still in XP) it shows the FPS to be 29.92+/-0.05. The panning is very very smooth and the audio is in sync. Also, why would it drop frames if my CPU is at 60%?

Something is odd with FFDShow - it is usingthe x264 library right?

I have also disabled auto-post processing.

[bond]

It is not dropping frames- if you play the clip in mplayer2.exe (still in XP) it shows the FPS to be 29.92+/-0.05. The panning is very very smooth and the audio is in sync.
mplayer is afaik all-in-all faster than ffdshow

Also, why would it drop frames if my CPU is at 60%?
i didnt say that it dropped frames in your case

Something is odd with FFDShow - it is usingthe x264 library right?
x264 does offer a decoder, both ffdshow and mplayer use the decoder from libavcodec/ffmpeg

[Sirber]

x264 decoder isn't broken?

[bond]

x264 decoder isn't broken?
dunno, noone develops it or uses it :D

[akupenguin]

x264 does not offer a decoder. It was never finished, and doesn't even compile.

lavc's h264 decoder is about 15% faster now than it was on 5/3, but that's apparently not the magnitue of slowdown you're seeing.

[russo121]

i didnt say that it dropped frames in your case

Soo.... why did you talk about it?

[bond]

Soo.... why did you talk about it?
because its one reason why the nero decoder can be faster than libavcodec

[sjchmura]

I really want FFDShow to work - since then I can use AVC content in MCE2005. Right now, I cannot get MCE2005 to work with the nero filters no matter what I do. FFDShow and xvid, however, work fine.