27 Jan
2009
27 Jan
'09
9:09 a.m.
On Tue, 2009-01-27 at 13:49 +0100, Olivier Guilyardi wrote:
For example, in FFmpeg, each audio and video packets
are tagged using a PTS
which is computed using av_gettime() which calls gettimeofday().
this should be considered a bug and reported as such to the FFmpeg group
(preferably with a patch to make it use clock_gettime() if available).
gettimeofday is a non-linear, non-mononotic clock if ntp is used. it is
not suitable for timestamping in this way. without ntp, it will work
better, but it is still subject to potential non-monotonicity.
--p