This is also useful to test seeking on an input file.

This also addresses trac ticket #1437.

Improve rendering.

Files won't validate with mkvalidtor if these two elements are missing.
Use a const "Lavf" string that wont change with library version bumps.
Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

It is already called by av_frame_clone().
Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

* qatar/master:
  movenc: Add an option for omitting the tfhd base offset

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

Signed-off-by: Paul B Mahol <onemda@gmail.com>

The filter was ported to a native libavfilter filter.
Signed-off-by: Paul B Mahol <onemda@gmail.com>

* commit 'a4adabb4':
  movenc: Write the moof atom in two passes
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'c77d409b':
  twinvqdec: Check the ibps parameter separately

See: b8dc5f8b
See: 98b37700Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '8583b142':
  rtmp: Support reading interleaved chunks.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'd4c2a374':
  xmv: Add more sanity checks for parameters read from the bitstream

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

* commit 'dc4acc82':
  rtmpproto: Extend a comment to explain the prev_pkt arrays roles
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '647d655d':
  rtmpproto: Consistently use the right prev_pkt array
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '0d378439':
  rtmpproto: Check for the right return code
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '8411baf6':
  dca_parser: Handle changes in DCA frame size

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

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

* commit '18a245a2':
  jpeg2000dec: Add more checks when parsing headers

The check cannot be true in FFmpeg, but does no harm.
I will move it in a subsequent commit so it can detect missing SIZ
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

With some (buggy) drivers, the VIDIOC_G_STD ioctl returns a std_id that cannot
be matched with any of the enumerated v4l2_standard structures (for example
std_id = 0 or std_id = 0xffffff). Do not fail when we reach the end of the
enumeration without a valid match.

Fixes ticket #2370

Note: This commit message has been modified by Giorgio Vazzana, the original
commit message was:

"Fixed regression for mandatory VIDIOC_ENUMSTD support by v4l2"
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This makes the output fragments independent of their position in
the output stream, making the output work better when streamed.

QuickTime Player doesn't support fragmented mp4 without the base
data offset, though.
Signed-off-by: Martin Storsjö <martin@martin.st>

This is a bit more work, but avoids having to fill in
the data offset field afterwards instead of directly when
the rest of the trun atom is written.

This simplifies future cases where this field needs to be set to
something different.
Signed-off-by: Martin Storsjö <martin@martin.st>

This is required, since invalid parameters actually could
pass the switch check below.

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>

A given packet won't always come in contiguously; sometimes
they may be broken up on chunk boundaries by packets of another
channel.

This support primarily involves tracking information about the
data that's been read, so the reader can pick up where it left
off for a given channel.

As a side effect, we no longer over-report the bytes read if
(toread = MIN(size, chunk_size)) == size
Signed-off-by: Martin Storsjö <martin@martin.st>

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

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

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

Approved-by: Wei Gao <highgod0401@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Contains text suggested by carl
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

It's introduced by the erroneous merging commit cbe47b1e.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Since the number of channels is multiplied by 36 and assigned to
to a uint16_t, make sure this calculation didn't overflow. (In
certain cases the calculation could overflow leaving the
truncated block_align at 0, leading to divisions by zero later.)

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>

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

prev_pkt[0] is used for input packets, while prev_pkt[1] is
used for output.
Signed-off-by: Martin Storsjö <martin@martin.st>

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