avcodec/pgssubdec: Fix input pts

Fixes part of Ticket2516

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
ffmpeg: fix integer overflows with sub->*display_time

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
lavf/libssh: set freed pointers to NULL

Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/hevc: fix nb_sh / nb_sps check

fixes integer overflow

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/hevc: check slice_header_extension data length

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/hevc_ps: more complete check for vps_max_dec_pic_buffering

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/hevc_ps: Check layer_id_included_flags count

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Support raw dvdsub palette as stored on normal dvd's

This is how the palette is stored on dvd's. Currently
only xbmc passes the palette information to libavcodec
this way.
Check return value of avio_seek and avoid modifying state if it fails

The code still modifies state if the timestamp is not found. Not
sure exactly how to avoid that.
asf hacks
if av_read_packet returns AVERROR_IO, we are done. ffmpeg's codecs might or might not handle returning any completed demuxed packets correctly
added: Ticket #7187, TV Teletext support for DVB EBU Teletext streams
Don't accept mpegts PMT that isn't current
Don't reparse PMT unless it's version has changed
Read PID timestamps as well as PCR timestamps to find location in mpegts stream
Get stream durations using read_timestamp
changed: allow 4 second skew between streams in mov before attempting to seek
fixed: memleak in mpegts demuxer on some malformed (??) mpegts files with too large pes packets

at-visions sample file brokenStream.mpg
Speed up mpegts av_find_stream_info
dxva-h264 Fix dxva playback of streams that don't start with an I-Frame.