[FFmpeg-devel] [PATCH 2/2] libavfilter/af_atempo: Avoid round-off error build-up, ticket #2484

Michael Niedermayer michaelni at gmx.at
Sun Apr 21 11:19:10 CEST 2013

On Sat, Apr 20, 2013 at 09:34:25PM -0600, pkoshevoy at gmail.com wrote:
> From: Pavel Koshevoy <pkoshevoy at gmail.com>
> Current method for constraining fragment position drift suffers from
> round-off error build up.
> Instead of calculating cumulative drift as a sum of input fragment
> position corrections, it is more accurate to calculate drift as the
> difference between current fragment position and the ideal position
> specified by the tempo scale factor.
> Signed-off-by: Pavel Koshevoy <pkoshevoy at gmail.com>



Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

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even the very wise cannot see all ends. -- Gandalf
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