When prescale is enabled, time fields are converted to the output
timebase before expression evaluation. This allows option specification
even if the input timebase is unknown.
The setts bsf has an option to change TB. However the filter only
changed the TB and did not rescale the ts and duration, so it
effectively and silently stretched or squeezed the stream.
The pts, dts and duration are now rescaled to maintain temporal fidelity.
Removes the special -I flag specified in the avcodec/bsf/ subdirectory.
This makes code copy-pastable to other parts of the ffmpeg codebase, as
well as simplifying the build script.
It also reduces ambiguity, since there are many instances of same-named
header files existing in both libavformat/ and libavcodec/
subdirectories.
Reviewed-by: Lynne <dev@lynne.ee>
Signed-off-by: James Almer <jamrial@gmail.com>
