mpegts: always parse pcr

Previously pcr transmitted without payload but as part of the video stream was
not parsed.

Signed-off-by: Marton Balint <cus@passwd.hu>
cinedec: add shutter and crop metadata
Merge remote-tracking branch 'cus/stable'

* cus/stable:
  mpegts: always parse pcr

Merged-by: Michael Niedermayer <michaelni@gmx.at>
swresample: Add AVFrame based API

Based on commit fb1ddcdc8f51b9d261ae8e9c26b91e81f7b6bf45 by Luca Barbato <lu_zero@gentoo.org>
Adapted for libswresample by Michael Niedermayer
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>