[MPlayer-users] Re: alsa output strangeness with latest CVS

[gabor]

On Thu, 2004-05-20 at 14:12 +0200, Tobias Diedrich wrote:
> gabor wrote:
> 
> > with dmix the video (the visual part) is not smooth...using a large
> > audio buffer size helps, but does not eliminate the problem :(
> 
> "-autosync 30" should help
yes, it helps a lot..thanks for the tip :)

but it's still not perfect :(

now the motion is smooth, but the audio is not EXACTLY in sync...the
delay is relatively small...let's say 0.2seconds at max, and imho not
constant...

mostly u can see it when someone is talking, and you are watching his
lips move...

i tested it like this:
i wrote a simple python script, which randomly started mplayer with and
without dmix on the same file.. then i guessed the option used
(with/without dmix), and stopped mplayer..then the script showed me the
commandline used...

i can identify for 100% when it's with/without dmix :((

question: is it possible to achieve with autosync
perfect/non-distinguishable a/v sync? after reading the man pages, it
seems that the answer is no.... 

of course i can upload a sample if needed :)

gabor