prores: Reject negative run and level values

Sample-Id: 00000611-google

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
lavf/riff.c: Fix GeoVision H.264 fourcc.

Fixes d24da748
doc/filters/scale: do not explicitly state the default swscale flags value

This is done is order to avoid the need of synching scale with libswscale
docs in case the libswscale default changes.
Merge remote-tracking branch 'qatar/master'

* qatar/master:
  prores: Reject negative run and level values

See: 93c220e895a417e88a6be7df85e250c5c3f675b6
Merged-by: Michael Niedermayer <michaelni@gmx.at>
doc/codecs: document skip_alpha

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
doc/codecs: Cosmetics in the flags2 description

Signed-off-by: Timothy Gu <timothygu99@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
doc/codecs: Remove no longer existing options

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
doc/codecs: Add ignorecrop

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
doc/codecs: Add missing mpeg2 aac profiles

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avformat/movenc: make AVStream easier to access

This adds a AVStream pointer to Track

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avformat/movenc: set pretty compressor name for XDCAM

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avformat/movenc: set XDCAM codec tag correctly

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avfilter/vf_removelogo: use av_freep() for saftey

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avfilter/vf_removelogo: fix offset for accessing pixels above and below

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avfilter/vf_removelogo: fix pixel pointer so it points where its intended

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avfilter/lavfutils: fix memleak of avpacket

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
riff: Add a mapping for VP6A

This allows demuxing VP6A from F4V files.

Signed-off-by: Martin Storsjö <martin@martin.st>
avdevice/pulse_audio_enc: fix stream index

Signed-off-by: Lukasz Marek <lukasz.m.luki@gmail.com>
avformat/ftp: fix possible deadlock

Signed-off-by: Lukasz Marek <lukasz.m.luki@gmail.com>
avformat/ftp: add log regarding passive mode failure

Signed-off-by: Lukasz Marek <lukasz.m.luki@gmail.com>