Based on the shotdetect algorithm (http://shotdetect.nonutc.fr/ by Johan
MATHE johan.mathe tremplin-utc.net).

This works as expected if the input stream is not yuv4xxp.

Reviewed-by: Paul B Mahol

This fixes -vol leading to 2 inserted volume filters
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Found, analysed and tested by trac user Jamal.

Fixes part of Ticket #1404.

Found, analysed and tested by trac user Jamal.

Fixes part of Ticket #1404.

Found, analysed and tested by trac user Jamal.

Fixes part of Ticket #1404.

This reverts 78da0438; it is not
required anymore since the previous commit (these extended checks were
for the -timecode option in both muxers and encoders), and reduces the
diff with the fork.

Some demuxers set a timecode in the format or streams metadata. The
muxers now make use of this metadata instead of a duplicated private
option.

This makes possible transparent copy of the timecode when transmuxing
and transcoding.

-timecode option for MPEG1/2 codec is also renamed to -gop_timecode. The
global ffmpeg -timecode option will set it anyway so no option change
visible for the user.

avfilter_default_filter_name() is supposed to access an AVFilterContext
struct, if used with a private struct it will cause a crash since it will
access fields which are non defined in the private struct.

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

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

Helps debuggability.

The function is modelled after av_default_item_name(), and will print the
name of the instance filter if defined, otherwise the name of the filter.

This allows to show the instance name in the log, which is useful when
debugging complex filter graphs.

* qatar/master:
  librtmp: return AVERROR_UNKNOWN instead of -1.
  librtmp: don't abuse a variable for two unrelated things.
  librtmp: add rtmp_app and rtmp_playpath private options.
  bmv: add stricter checks for invalid decoded length
  avpacket: fix duplicating side data.
  flv: support stream text data as onTextData

Conflicts:
	libavcodec/bmv.c
	libavformat/flvdec.c
	libavformat/flvenc.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

The test program is useful for checking which raw formats are currently
identified by a codec tag.

icodec can be NULL if there is no input stream
clearly associated with the output stream.

The use of cyan is droped from the levels to avoid confusion
magenta/cyan/blue is used for muxer/codec/filter layer
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

Please help setting the category for all remaining AVClasses
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

fix heap array overflow
Found-by: Piotr Bandurski <ami_stuff@o2.pl>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes ticket1392
Found-by: Piotr Bandurski <ami_stuff@o2.pl>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This makes it easier to switch between native rtmp and librtmp.

This makes decoder handle random data passed as BMV frame data.

Fixes ticket1391
Found-by: Piotr Bandurski <ami_stuff@o2.pl>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes ticket1212
Found-by: Piotr Bandurski <ami_stuff@o2.pl>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes compilation of xbin, adf and idf demuxer if
bintext demuxer was disabled.

Fixes ticket #1399

Use correct side data size instead of just zeroed field.