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

This makes the encoding of picture descriptions consistent with the
encoding of other text id3 tags and works better with iTunes, which
does not display pictures with some UTF-16 picture descriptions
(including a UTF-16 empty string, i.e. BOM + terminator).  It also
saves a few bytes.

Example:
 ffmpeg -f lavfi -i sine=b=4 -f lavfi -i smptebars -map 0:a -map 1:v \
   -codec:a libmp3lame -codec:v mjpeg -id3v2_version 3 \
   -metadata:s:v comment="Cover (front)" -t 3 -y out.mp3

This example does not set a picture description (-metadata:s:v title=)
so an empty string is written in the id3v2.3 APIC frame.  Without this
patch, UTF-16 is used and the cover art does not display in iTunes.
With the patch the cover art is displayed.  (Note that iTunes does not
display or have a way to set picture descriptions, only the picture
itself, but nevertheless has trouble skipping some UTF-16 descriptions.)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* qatar/master:
  rtmp: Do not misuse memcmp
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '205a4502':
  doc: Clarify the avconv section about -re

Conflicts:
	doc/ffmpeg.texi
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'd175a573':
  doc: Add an example on publishing over RTMP
  doc: Add librtmp to the section header for the librtmp specific details
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'a435ca5b':
  doc: Explain that the default RTMP user agent is different when publishing
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'aa16a6b0':
  doc: Extend the rtmp example to include how to pass username/password
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '8e1fe345':
  rtmp: Detect and warn if the user tries to pass librtmp style parameters
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'ba5393a6':
  rtmp: rename data_size to size
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '4ebc7d65':
  rtmp: Use PRId64 when needed.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

* commit '5a9a9d4a':
  lavc: Add refcounted api to AVPacket

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

* commit 'c1076d84':
  h264: check one context_init() allocation

Conflicts:
	libavcodec/h264.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '5eb488bf':
  h264: use explicit variable names for *_field_flag

Conflicts:
	libavcodec/h264.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

* commit 'b3dc260e':
  h264: return meaningful values

Conflicts:
	libavcodec/h264.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

CC: libav-stable@libav.org

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

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes build with MSVC and ICL.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

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>

This should fix the issue with strings longer than 1024
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

The fact that a different user agent is used is cruicial for getting
publishing authentication working. (When using librtmp, this other
user agent has to be specified manually, but that's not needed
with the libavformat internal RTMP support.)
Signed-off-by: Martin Storsjö <martin@martin.st>

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

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

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

Reviewed-by: Nicolas George <nicolas.george@normalesup.org>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Provide a clean way to manipulate packets.

Signed-off-by: Anton Khirnov <anton@khirnov.net>

Signed-off-by: Anton Khirnov <anton@khirnov.net>

Signed-off-by: Anton Khirnov <anton@khirnov.net>

* qatar/master:
  libavutil: Make avpriv_open a library-internal function on msvcrt
Merged-by: Michael Niedermayer <michaelni@gmx.at>