On 2021-05-18 22:04, Michael Fabian 'Xaymar' Dirks wrote:
Hello,
while tracking some time stamp issues unique to FFmpeg I noticed
AV_Time_BASE(_Q) being present quite often, which appears to be a value to
define time stamps in milliseconds. Tracking it back to its origin I could find
very little to no information about why this value was chosen. All I know so
far is that it was chosen for compatibility with very early versions of FFmpeg.
Does FFmpeg require this value to be a full millisecond? Or is it possible to adjust this
to microseconds and "fix" many of the time stamp issues that occur? While it
seems to be possible to work-around this issue on a muxer/demuxer level, the underlying
issue in FFmpeg would still be present. At the moment, most non-integer ms framerates and
sample rates end up performing weird without post-processing.
It seems like my rubber ducky debugging has misled me into believing the
culprit to be AV_TIME_BASE. Ignore me, I misunderstood how FFmpeg works
internally.
--
Sincerely | Mit freundlichen Grüßen
Michael Fabian 'Xaymar' Dirks
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