This allows collecting statistics on probing scores and the amount of data
probing needed for various files and formats.
For example it can be used to find out which formats tend to need more
data for probing or which files are probed with less certain/lower scores
Reviewed-by: Stefano Sabatini <stefasab@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

The description has been moved to the FFmpeg wiki:
https://trac.ffmpeg.org/wiki/ViterbiAlgorithmSigned-off-by: Timothy Gu <timothygu99@gmail.com>

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

Fixes Ticket #1822.

* qatar/master:
  hwaccel: Simplify ff_find_hwaccel

Conflicts:
	libavcodec/mpeg12dec.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

It is always called by passing fields from an AVCodecContext.

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

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

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

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

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

Signed-off-by: Timothy Gu <timothygu99@gmail.com>
Signed-off-by: Stefano Sabatini <stefasab@gmail.com>

See: libavcodec/webp.c
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

The headers and footers are used to integrate Doxygen into Libav's website.
Fixes the Libav-ish look when doing `make apidoc`.
Signed-off-by: Timothy Gu <timothygu99@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

Fixes a particular youtube video that I unfortunately can't share.

Formatted in such a way that DivX certified players can decode it.
Verified on Sony Playstation 3 and Philips DVP3380.

Fixes ticket 2385
Signed-off-by: Erik Olofsson <eaj.olofsson@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

In particular, distinguish if the option was -filter or -filter_script.

Suggested-by: Nicolas George

Avoid the need for multiple potentially inconsistent access operations,
slightly factorize code.

This reduces the amount of data needed to identify dv
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

40% faster probe
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

a758c5e2 added probing for various tools, such as AS. Unfortunately, GNU
AS is reading stdin with -v, and thus configure is stalled with
configure arguments such as --as=as.

Fixes Ticket #1898.

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

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

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

about 3 times faster
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* qatar/master:
  avienc: drop the vfr flag.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

It can be debated if avi is vfr or cfr, it can be either depending
on the definition of vfr and cfr.
This commit ensures that avi is treated correctly independent of
the AVFMT_VARIABLE_FPS value.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* commit '5462dde1':
  metasound: Fix error message argument
Merged-by: Michael Niedermayer <michaelni@gmx.at>

about 71 times faster
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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