opensource AVS decoder in libavcodec available

[stefang]

AVS decoding is now available in MPlayer in case somebody wants to try that out. You need a very recent build (and I mean not older than today) and you have to specify the demuxer like this

mplayer -demuxer lavf foo.avs

as the automatic detection of the format does not correctly work yet.
I have already done some MMX optimizations of my decoder, but there is still a lot to be done in that respect. Anyway, playback of those sample clips should be smooth on any half-modern PC.

Btw, I agree the sample clips are not that great. Encoding black bars while the format would allow an aspect ratio definition is bad, and also in terms of quality per bitrate I don't find the clips especially convincing. But who knows, maybe some day a better encoder will come along.

Regards
Stefan Gehrer

[bond]

split to an own thread, i think it deserves it ;)

btw do you have a collection of smaller avs sample clips for general testing?

[videomixer9]

mplayer is easily twice as fast as openavs and doesn't stutter around, the official decoder thing seems to be undownloadable, at least I never got it to download. However the sample encodes are just unusable and it would be nice if someone else could at least provide samples. The samples are blocky and look worse than Xvid rips at lower bitrate I got of e.g. le peuple migrateur. Honestly I think messing with AVS is just a waste of time you could spent on more useful things.

[Sirber]

Honestly I think messing with AVS is just a waste of time you could spent on more useful things.Couldn't agree more :D
and it's a shame libavcodec supports it :sly:

[bond]

guys this thread is about avs and not for posting whereever possible whether you like avs or not

plz respect that

[stefang]

Sorry, I don't have any other samples than those 9 clips from the avs.org.cn website.

The fact that the quality of these clips is not convincing does not disqualify the AVS standard as such. On the decoder side, I think a fully
SIMD optimized version could well be useful for playing HD content on a PC bought in the last years (like I have), not a very modern GPU-supported dual core decoding like you need for AVC. And on the encoder side: Well, if the encoder they used for producing those clips has the same quality as the decoder that was published by this institution called NSCC, then there is large space for improvement. And I believe open source could fill that space.

and it's a shame libavcodec supports it
Thanks for your valuable contribution.