Alex Woods authored Mar 18, 2014 and Ilkka Ollakka committed Mar 21, 2014

This patch fixes a problem that occurs at the start of playback of MPEG2
streams.  The symptom is that an initial good frame will display and
then the video appears to skip back a frame or two and some
macroblocking is observed. The stream then plays correctly. This is
really obvious when switching between SAPed multicast streams, where
you're jumping right in to a lot of movement and probably not starting
with an I frame.

The issue appears to be some code introduced way back in 2004 (commit
eaefb850

) which resubmits data to the
video codec. The commit notes suggest it was to avoid dropping the first
I frame, but I see no obviously lost I frames after removing the code
with my test samples. Presumably this was a work-around for a libavcodec
issue that is no longer required.

Therefore, this patch basically just reverts the 2004 commit in its
current form.

Signed-off-by: Ilkka Ollakka <ileoo@videolan.org>