Otherwise the extradata used would be ISOBMFF if the input is
even though we use the *_mp4toannexb BSFs to convert it to
annex B to feed it to the actual decoder.
(The mediacodec decoders also use said BSFs, yet they process
the extradata in a way that works even when using the ISOBMFF
extradata; in fact, using the converted extradata would break
their check for whether to warn for missing extradata for
the ISOBMFF without-in-band-header profiles.
Furthermore, there are several users of the *_mp4toannexb BSFs
that don't ever touch extradata. They have not been touched.)
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
