[Mplayer-users] mp3 downsampling/mixing? (again)

Arpi arpi at thot.banki.hu
Wed Aug 15 13:52:08 CEST 2001


> >> Why is audio decoding faster with -hardframedrop? Audio is not skiped, is it?
> >it is not faster/slower. (no audio skipped)
> >but all CPU usage times are compared to video times, so if A-V is out of
> >sync (video playback is slower than realtime), they will show false results!
> >Btw not so false, but they mean "how many % of cpu required for playback
> >without A-V desync". this way you can get >100% values, it means that you
> >need xx% more cpu to get synced playback.
> Nope, I did not mean audio %age, I meant absolute values in seconds!
> normal:
> noframedrop:  V:  27.369s VO:   0.002s A:   2.341s Sys:   3.787s =   33.498s
> hardframedrop V:  25.736s VO:   0.008s A:   2.107s Sys:   5.510s =   33.360s
> downmix:
> noframedrop:  V:  27.210s VO:   0.003s A:   1.648s Sys:   4.784s =   33.646s
> hardfraemdrop V:  25.852s VO:   0.014s A:   1.501s Sys:   5.963s =   33.330s
> It's not much, but the effect is stable. Audio goes down a little, also if I 
> rerun. Maybe it's a cache effect or just timing problem...

is A-V in sync until the end of teh movie?
i mean if video ends, audio is stopped and it exits.

A'rpi / Astral & ESP-team

mailto:arpi at thot.banki.hu

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