Fix out of array read

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes assertion failure

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

The FLV muxer tries to update the header in write_trailer, which is
impossible if writing to a pipe or network stream. Don't write header
data if seek to header fails.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Consistent with the image2 muxer.

Factorize.

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

Fixes CID703728
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes CID733836
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes CID747721
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes CID747722
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes CID747723
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Reviewed-by: Thilo Borgmann <thilo.borgmann@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Reviewed-by: Thilo Borgmann <thilo.borgmann@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Reviewed-by: Thilo Borgmann <thilo.borgmann@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Nedeljko Babic <nbabic@mips.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* qatar/master:
  aacdec: Fix an off-by-one overwrite when switching to LTP profile from MAIN.
  x86inc: fix stack alignment on win64
  rtpproto: Remove unused defines

Conflicts:
	libavcodec/aacdec.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'f3f60dcb':
  rtpdec_mpeg4: Cosmetic cleanup
  rtpdec: Cosmetic cleanup of the header
  rtpdec: Get rid of a useless _s suffix on a struct name
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '7941159d':
  rtpdec/enc: Remove outdated/useless/misleading comments
  rtpdec: Improve some comments
  rtpdec: Remove unused context variables
  rtpdec: Limit writing to the buffer size
  svq1: Fix building with -DDEBUG
  svq1: return meaningful error codes.

Conflicts:
	libavcodec/svq1dec.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '998fdcff':
  lavc: replace some forgotten instances of PixelFormat with AVPixelFormat
  svq1: unmacroify macros used only once.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '95baf701':
  svq1: deMpegEncContextize

Conflicts:
	libavcodec/svq1dec.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

The functions have become unused
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Also log scene value. Improve debugging.

Add options introspection, and improve error feedback.

The variable is now used also for audio frames.

Improve rendering.

The file now contains also an audio select implementation. Also move the
aselect/select documentation from video filters to the multimedia filters
section.

Simplify.

Found-by: pawlkt
CC: libav-stable@libav.org

Avoid rounding differences between x86_32 and x86_64.
Fix trac ticket #1997.

Signed-off-by: Martin Storsjö <martin@martin.st>

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

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

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes assertion failure

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Until now, the end_display_time was ignored, making single
packets subtitles (like dvdsub) stay indefinitely.

start_display_time was also ignored, but is it almost always 0.