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>

AVI does not really support vfr properly, only by padding with null
packets.

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

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

The ico probe function is pretty weak just checking a few bytes for being 0, 1 or not 0

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

* qatar/master:
  h263dsp: K&R formatting cosmetics
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '0338c396':
  dsputil: Split off H.263 bits into their own H263DSPContext

Conflicts:
	configure
	libavcodec/mpegvideo.h
	libavcodec/mpegvideo_enc.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

Signed-off-by: Diego Biurrun <diego@biurrun.de>

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

Also remove array element numbering comments.

Fixes playback of some AAC streams, which are otherwise mangled by the
parser, and stss is typically only valid for video anyway.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

* qatar/master:
  Remove #undefs for formerly forbidden system functions
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

* commit 'cffecc0e':
  avfilter/graphparser: Directly free filter memory if initialization fails

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

Reviewed-by: Wei Gao <highgod0401@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Dave Yeo <daveryeo@telus.net>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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