--spu should not be an advanced option
PGS subtitles: use origial frame size (fix #6324)

With CODEC_ID_HDMV_PGS_SUBTITLE use codec_{width,height} for
i_original_picture_{width,height} to correctly display
subtitles with a frame size that is different from the
video stream

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>
AVformat: use a similar compat detection than AVcodec
lavf: Support rotation side data

Support stream side data only

Close #11473

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>