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.

Helps debuggability.

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

This fixes one (disabled) fate test.

Thanks-to: ubitux to pointing at the odd filter order and stereo/mono messup
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

This fixes the issue that since the last merge -async caused 2 aresample
filters to be inserted
users that generate funny timestamps in a filtergraph should probably
manually insert a aresample filter where they need it.

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

%f refers to a double argument already.

ffmpeg -i in.mxf -filter_complex "[0:0]fieldorder=tff" out.wav will
fail with an error message instead of crashing.

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

Idea found in a commit from Anton Khirnov
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>

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

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

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

Reduces diff to qatar by 9 lines
Should not change anything

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

Inspired-by a change from Anton Khirnov
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This reduces the difference to qatar by 27 lines
No functional change, the code should be unused

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

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

Based on similar code from anton

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

Reduce diff against avconv, and change some doxycomments into normal
comments (no point in doxifying ffmpeg internal fields).

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

These helpers are handy, just notice the user it is done using lavfi.

Deprecate -vol.

Inspired by asyncts auto-insert patch from Anton Khirnov.

fixes a memleak

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

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

This fixes a regression which lead to non monotone timestamps
at the end of a file.

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

Some of the FATE changes are due to off-by-one different rounding being used
(lrintf vs av_rescale_q).
Some fate changes are due to 1 audio frame less being encoded (the new variant seems
matching what qatar does and according to ffprobe its closer to the requested duration)
the mapchan feature sadly is lost in this commit because it depends on resampling
being done in ffmpeg.c which is now moved completely into the av filter layer
-async is broken after this commit, this will be fixed in subsequent commits
the new filter reconfiguration system is flawed and will drop a frame on each
parameter change which is why the nelly moser checksums need updating.

Conflicts:

	ffmpeg.c
	tests/ref/fate/smjpeg

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

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

This restores correct block_align values in case of stream copy.

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

Fixes Ticket1124

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

Fixes ticket1295

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>

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

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