This is consistent with other AVSubtitle timing adjustments.

lavc/utils already rescales avpkt->pts to sub->pts in AV_TIME_BASE_Q
before calling the decode callback. This prevents from rescaling again
into the decoder, and avoid the use of avctx->time_base which will
disappear in the incoming codecpar merge.

This commit also replaces the use of "20 centisecond" (ass time base)
with "200 ms".

This is consistent with the AV_BASE64_SIZE macro and avoids the literal
use of constants in the code.

This is added in 10.11, so we add a #define when building against older SDKs.

The decoder actually supports 7.1-channel eac3, but since the parser only
reports 6 channels, we end up decoding the 5.1 downmix (same as the internal
decoder) for now.

- ADTS-formatted AAC didn't work
- Channel layouts were never exported
- Channel mappings were incorrect beyond stereo
- Channel counts weren't updated after packets were decoded
- Timestamps were exported incorrectly

The build failure here is caused by the enum value not being defined, but
as long as we're on a newer SDK that has it, it's safe to use it even
when our deployment target is older. Setting the property will error, but
we're not failing on errors there.

- size variables were used in a confusing way
- incorrect size var use led to channel layouts not being set properly
- channel layouts were incorrectly mapped for >2-channel AAC
- bitrates not accepted by the encoder were discarded instead of being clamped
- some minor style/indentation fixes

This isn't necessary here, and for some reason broke only multichannel
AAC encoding when a channel layout tag was set.

Most useful for MPEG-TS. Works by having the underlying muxer configure the
bitstream filters, then moving them to our own AVStreams.

They were derived from incorrect values cr=0.2125 (should be cr=0.2126)
and cb=0.0721 (should be cb=0.0722).

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

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

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

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

http://ghostscript.com/~tor/gs-browse/gs/openjpeg/libopenjpeg/t1.cSigned-off-by: Michael Niedermayer <michael@niedermayer.cc>

Looks broken.

Remove the duplicated code for handling failure of apply_param_change().

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>

* commit 'a8068346':
  lavc: add a variant of av_get_audio_frame_duration working with AVCodecParameters

Fixes from jamrial incorporated.
Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

* commit '998e1b8f':
  lavc: add codec parameters API

  Fixes added in:
    - bit_rate has been made int64_t to match.
    - profile and level are properly initialize.
Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Removed previous swscale code under '#ifndef NEW_FILTER'
and removed unused fields of SwsContext