Add 3 more presets: fast, medium, slow.
Improve min/max QP calculation.
Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>

This simplifies the code
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>

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

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

avformat/flvdec: Use the first index entry to find the first packet if there was a parsing error in the header

Fixes: unknow_codec.flv
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

avformat/flvdec: Print terminator value found if it differs from AMF_END_OF_OBJECT in AMF_DATA_TYPE_MIXEDARRAY
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

avformat/mpjpegdec: Allow mpjpeg headers parsing to succeed upon EOF, if required headers are present
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

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

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

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

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

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

Fixes playback of some files with ffplay.
Signed-off-by: Paul B Mahol <onemda@gmail.com>

Fixes ticket #4841.

* commit 'c0a49077':
  asfdec: add more checks for size left in asf packet buffer
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit '1b2412f5':
  lavc: Fix compilation with --disable-everything --enable-parser=mpeg4video
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit 'f00f6d53':
  lavc: Sanitize header inclusion guards
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit '6064f697':
  lavc: Enable side data only packets by default
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

Allow writing an empty channel mask into the wave format header. Useful
if the input file contains an unknown channel layout.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

The recent commits change the value slightly. Even though it's
within the threshold it's better to risk as little as possible
especially when different systems, processors, FPUs and compilers
are involved.
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>

Since TNS was fixed with the recent commits retweak the values
so it's more frequently used.
Still not enabled by default yet, though it's possible that it
will be made enabled by default in the near future.
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>

This commit was made possible with the earlier commits since the
new quantization method basically means we're working always with
unsigned values. The specifications mention to use compression when
the first 2 bits are identical but they didn't mention if this should
happen before or after the conversion to signed values. Actually
they said nothing about conversion to signed values.

With this commit, coefficient compression usually always happens
which saves a lot of space, especially at extremely low bitrates
and doesn't change the quality at all.
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>