FATE/opus: increase fuzz for the celt tests

This seems to be needed on some 32bit arches.
avisynth: set duration of audio streams

Signed-off-by: Anton Khirnov <anton@khirnov.net>
build: Support building using clang-usan and disable-optimization

Clang Undefined Behaviour Sanitizer seems to make non-constant constant
expressions, making the compilation fail when they are used within
inline assembly if no optimization is requested.

Add -O1 to the cflags to hide the misbehaviour.

Bug-Id: 683
Merge commit '4735784f1ced27026fbeada5fd31505132e565e9'

* commit '4735784f1ced27026fbeada5fd31505132e565e9':
  FATE/opus: increase fuzz for the celt tests

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '7c377f0e74de8ab57f6baa64f3ec197c82104764'

* commit '7c377f0e74de8ab57f6baa64f3ec197c82104764':
  avisynth: set duration of audio streams

See: ae8e2d7634e09fa57941c4c644ba1b6e4cf9eec6
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '4d25c2bc76f0a708c2ba470b6bfeb547efe37115'

* commit '4d25c2bc76f0a708c2ba470b6bfeb547efe37115':
  build: Support building using clang-usan and disable-optimization

Change not merged, as it has been fixed differently and this change
would prevent disabling optimizations with ubsan

See: bebce653e5601ceafa004db0eb6b2c7d4d16f0c0
Merged-by: Michael Niedermayer <michaelni@gmx.at>
rtmpproto: avoid setting auth var value if null

Use default values if parsed variable is found not to
have any value. Avoids crashing at strlen for salt/user
on the auth call afterwards and needless NULL assignments
for the rest (default is already NULL for those).

Should fix Coverity Scan issues #966644 and #966645

Signed-off-by: Reynaldo H. Verdejo Pinochet <r.verdejo@sisa.samsung.com>
rtmpproto: info out for unsupported auth vars

Should aid debugging badly formatted URLs

Signed-off-by: Reynaldo H. Verdejo Pinochet <r.verdejo@sisa.samsung.com>
hlsenc: Set the default codecs to AAC and H264

Most HLS implementation only support these codecs.

Signed-off-by: Martin Storsjö <martin@martin.st>
hevc: fix key_frame as an IRAP

it was always 1 before with ISOBMFF(cherry picked from commit fb1402b1ec78d80acd6ced76bf78d65560965c4c)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '34e2ce5dde073244ccb2b62f930e96fe612690f7'

* commit '34e2ce5dde073244ccb2b62f930e96fe612690f7':
  hlsenc: Set the default codecs to AAC and H264

Merged-by: Michael Niedermayer <michaelni@gmx.at>
doc/filters: fix typo

Found-by: bloody123
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>