It allows to check if a given codec can be written into a container.

Metadata currently is written only at the start of the file in normal
cases, when transcoding from a rtmp source metadata could be
written later and the offset recorded can exceed 32bit.

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

ID3v1 are legacy tags with several limitations; furthermore
avconv/ffmpeg writes the tags in UTF-8 which probably has near-0
software support.

Add a -write_id3v1 option to be able to turn it on; disabled by default.

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

MpegTSContext's AVClass member can be NULL.

AVFormatParameters are converted into corresponding private options in
av_open_input_file/stream() compat wrappers, so accessing them from
demuxers is redundant.

Signed-off-by: Diego Biurrun <diego@biurrun.de>

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

The new function provides a more flexible interface for peeking at a
FIFO buffer data.

FFmpeg writes data_size as AU_UNKNOWN_SIZE, make demuxer not
fail when data_size is set to this value.
Should fix trac issue #394.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

This is based on the original work by Baptiste Coudurier.

This is based on the original work by Baptiste Coudurier.

This is based on the original work by Baptiste Coudurier.

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

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

This fixes the warning:
    libavformat/oggenc.c:75:7: warning: missing braces around initializer [-Wmissing-braces]

This fixes the warning:
    libavformat/avidec.c:81:5: warning: missing braces around initializer [-Wmissing-braces]

This is consistent, allows custom handlers to print more info
(since they probably know about the AVFormatContext class
but not a demuxer-specific one) and also avoids issues due
to the class pointer being NULL for non-raw mpegts.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

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

The v->ctx is always not NULL now, check for streams presence to
mark the read_header state.

Fixes bug #25, possibly introduced by 603b8bc

Fixes Ticket327

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

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

Fixes Ticket333

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

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

Signed-off-by: Zohar Kelrich <lumimies@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Signed-off-by: Zohar Kelrich <lumimies@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

This fixes an issue where packets which start being read
while reading the header stick around after a seek.

Signed-off-by: Zohar Kelrich <lumimies@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Signed-off-by: Zohar Kelrich <lumimies@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Signed-off-by: Zohar Kelrich <lumimies@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Make continuity counter respect discontinuity flag
and null packets. Unpack the adaptation_field_control field.

Signed-off-by: Zohar Kelrich <lumimies@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Do not try to seek when we already know we are not allowed to.
Silences warning that always happens when streaming.

Signed-off-by: Zohar Kelrich <lumimies@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

This avoids a theoretically possible pointer arithmetic overflow
which would lead to a crash due to reading from NULL page.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

This prevents out of bounds reads when extradata is being decoded.

A loop control variable was shadowed inside the loop and never updated.

mpegts_read_header is used by both mpegts and mpegtsraw, so this
erro check is no longer valid.

Signed-off-by: Mike Williams <mike@mikebwilliams.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>

Whitespace of the patch cleaned up by Aurel
Some of the issues have been reported by Steve Manzuik / Microsoft Vulnerability Research (MSVR)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

"SAR" (Sample Aspect Ratio) is globally preferred over "PAR" (Pixel
Aspect Ratio), although the two terms share the same semantics.

For example the corresponding AVStream field is called
sample_aspect_ratio, and libavfilter has a filter named setsar.

Therefore prefer the term "SAR" over "PAR" in the
libavformat/utils.c:dump_stream_format() and avcodec_string() output
for avoiding confusion.

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