[MPlayer-users] Slower with sound ?

Arpi arpi at thot.banki.hu
Sun Oct 21 12:36:10 CEST 2001


> On Sat, 20 Oct 2001 23:34:32 +0200 (CEST) Arpi <arpi at thot.banki.hu> wrote:
> > sync to video is hard to implement.
> > 1. video cards has no timer, at least what we can use for something
> > 2. if you should shift audio timing - what are you doing? increase/
> >    decrease samplerate? not supported by most soundcards (drivers)
> >    and also sounds very funny. or just skip/duplicate chunks? even worse.
> Didnt you plan sync to video for the DVB cards ?

i had plans - for 5 minutes
as DVB blocks both audio and video - i'll use dvb for a-v sync.
so just convert stream to mpeg pes wiht pts, and leav sync mess to dvb.

> > so the only and best way is using audio card's timer.
> > unfortunately GETODELAY and such ioctl()'s are at the advanced/experimental
> > section of OSS specs, so some _driver_ developer think it's not mandatory
> > to implement and they use dummy functions. :(
> And what about ALSA ? Is the 0.9 usable/better ?

afaik yes. joy ping has fixed it, at least I applied 2 patch.
(i've never tried)

A'rpi / Astral & ESP-team

mailto:arpi at thot.banki.hu

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