It's too unreliable to be useful. avio_size() should be called instead.

This will prevent seeking by bytes for formats that cannot handle this.

This prevents flushing the packet buffer when the input format does not
support seeking.

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

On the first iteration through this code, last_dts is always
INT64_MIN (AV_NOPTS_VALUE) and the subtraction overflows in
an invalid manner.  Although the result is only used if the
input values are valid, performing the subtraction is still
not allowed in a strict environment.

Signed-off-by: Mans Rullgard <mans@mansr.com>

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

This avoids scanning through a whole file just to fail.

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

Fixes Ticket498

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

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

On OS X, av_malloc(0) returns pointers that cause crashes when
freed.

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

It has not been needed since a58858d60d.

Fixes decode of implicit HE-AAC without extradata or ADTS headers.

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

This patch also introduces CODEC_ID_CELT.

Signed-off-by: Nicolas George <nicolas.george@normalesup.org>
Signed-off-by: Diego Biurrun <diego@biurrun.de>

If the demuxer did not set a codec_tag, there is none and
inventing one makes no sense.  This change stops the rawvideo
"decoder" over-writing user-supplied pixfmt with one derived
from the codec_tag.  The pixfmt-codec_tag-pixfmt round-trip
is lossy since several pixfmts map to the same codec_tag.

This fixes fate-lavf-pixfmt with avfilter disabled.

Signed-off-by: Mans Rullgard <mans@mansr.com>

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

Fixes Ticket488

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

Signed-off-by: David Goldwich <david.goldwich@gmail.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>

The new code is free of biasing to the first timestamps
Fixes fraps.fps.test.zip

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

Signed-off-by: Elvis Presley <elvis@e.p>

This is most noticable on matroska files which has duration
as part of it's header.

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

It can take a long time before subtitles or data streams show up,
so we shouldn't wait for those before assuming we have all info
for streams.

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

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

This should improve speed.

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>

Also extend the functionality to use the last found program to start the search
after that program.

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

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

Fixes ticket 365.

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

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

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

"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>

Rename it to "avctx", the old name was confusing as the function is
used also with decoder contexts.

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

libavformat/utils.c:599: warning: missing braces around initializer
libavformat/utils.c:599: warning: (near initialization for ‘ap.time_base’)