Stop demuxing wtv on eof.

Fixes ticket #3991.
Fixes ticket #3995.
Fixes ticket #3997.

Reviewed-by: Peter Ross
Reviewed-by: Paul B Mahol
(cherry picked from commit 6efe4137ce39fef35e3e7f274160958acdac7581)
avformat/options_table: add FF_COMPLIANCE_UNOFFICIAL

Fixes ticket 3959

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit c02ea58c5f0a77f20c8046041edb974bb4376f4c)
avformat/matroskadec: do not trust the default duration to be the real 1/timebase if its less than 5fps

Fixes Ticket3980

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit be695ee389724d713e1b8a61ef899fe1795193ce)
mpeg4vdpau: Fix priv data size.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
(cherry picked from commit 46353759cb3c90ad8eb4af6526c236513d477296)
Move get_avc_nalsize() and find_start_code() to h264.h

This allows sharing them with the h264 parser

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 4898440f6bd19152373969159fff057b532c6374)

Conflicts:

	libavcodec/h264.c
avcodec/h264: simplify find_start_code()

this also uses avpriv_find_start_code(), though no speed change is expected as
the area searched is generally small

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 3b678da5e386c138316954e867d595f946666051)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/h264_parser: rewrite the parse_nal_units() loop logic based on h264.c

Fixes Ticket4011

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 69a9a90d2ef795162074be24e3ad2182a8676af2)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>