pan=stereo: FL < FL + 0.5*FC + 0.6*BL + 0.6*SL : FR < FR + 0.5*FC +
0.6*BR + 0.6*SR

didn't actually work ('Expected out channel name, got " FL < FL"')

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

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

Signed-off-by: Pavel Koshevoy <pkoshevoy@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

* commit '48a5adab':
  lavfi: add avfilter_init_str() to replace avfilter_init_filter().

avfilter_graph_create_filter() opaque is still passed to avfilter_init_filter()
which continues to pass it to init_opaque as its still used in the buffer sinks
the sinks should be changed and the opaque passing removed
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '1565cbc6':
  lavfi: make avfilter_free() remove the filter from its graph.

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

* commit '11136726':
  lavfi: add AVFilterContext.graph.

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

* commit 'c2c9801b':
  lavfi: deprecate avfilter_graph_add_filter().
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'bc1a985b':
  lavfi: replace avfilter_open() with avfilter_graph_alloc_filter().

Conflicts:
	libavfilter/avfiltergraph.c
	libavfilter/internal.h
	libavfilter/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Based on vf_hue.c code.

Wanted-By: ubitux

* commit '38f0c078':
  lavfi: merge avfiltergraph.h into avfilter.h

Conflicts:
	doc/APIchanges
	ffmpeg_filter.c
	libavfilter/avfilter.h
	libavfilter/avfiltergraph.h
	libavfilter/version.h
	tools/graph2dot.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '4a37d4b3':
  lavfi: add const to the pads parameter of avfilter_pad_get_name/type
  lavfi: add const to AVFilterContext.filter.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

Using the first names of authors sounds somewhat unprofessional
and might be considered offensive which is not intended.
The new names use the initials of the authors due to simplicity
and the possibility to apply it consistently without the need
to find political correct names for each future case where
alternative codecs might exist. Also its shorter ...

If someone has a better idea, like maybe 2 random letters
and people prefer it then iam happy to switch to that ...
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Regression since git 71ef1ec7.

* commit 'f223ad1e':
  doc: document the prores encoder options
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '93e65e9a':
  Cosmetics, restore alphabetic order in atomics lists.

Conflicts:
	libavutil/Makefile
Merged-by: Michael Niedermayer <michaelni@gmx.at>

This filter is not required anymore with aformat. Drop it at next bump.

This is heavily based on 2831b307 by Anton Khirnov <anton@khirnov.net>

* commit '9e6b5e61':
  img2enc: add an option for overwriting one file with subsequent images

Conflicts:
	doc/muxers.texi
	libavformat/img2enc.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

In particular, show h value in degrees.

This also drops support for "flat syntax" and "reinit" command.

"reinit" command is not very robust and complicates the logic more than
necessary, since requires to reset all the options in the command.

*This is a syntax break*.

Parts of this commit are based on: 4fa1f52eSigned-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Drop the unused opaque parameter from its signature.

It will be useful in the following commits.