[MPlayer-dev-eng] [PATCH] af_scale* command-line only
Robert Juliano
juliano.1 at osu.edu
Thu Jun 21 05:42:06 CEST 2007
I wrote:
> Here are just the filters (no interactivity and not tied to
> playback_speed). This patch only changes files in libaf and
> then just enough to enable the filters. This should be easier
> to test and allow those in PAL-land to have the audio play
> at a different tempo than the video (why they would want that,
> I dunno know).
>
> Usage:
> mplayer -af scaletempo=1.25 -speed 1.25 ...
> mplayer -af scalerate=.8 -speed=.8 ...
> mplayer -af scalepitch=1.5 ...
>
> As for performance, chaining five instances of scaletempo on
> my Athlon XP 3200, uses roughly 10% of the CPU. The WSOLA
> technique does little more then selectively skip forward/backward
> overlapping each skip. No DSP or FFT number crunching. And
> it produces quite decent results.
>
> ...
Any feedback? Do they compile? Run? Crash? Contain silly code?
Robert
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