[Mplayer-users] mp3 downsampling/mixing? (again)
lampert at math.chalmers.se
Wed Aug 15 13:45:45 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!
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
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...
Dipl. math. Christoph Lampert (complex analysis, integral formulae)
Email: gruel at gmx.de | Email: lampert at math.chalmers.se
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