`av_packet_unref` matches the AVFrame ref-counted API and can be used as
a drop in replacement.

Deprecate `av_free_packet`.

Reported-By: infer

Since the duration is compared to the tfra durations/intervals which
are expressed in pts, calculate that here as well.
Signed-off-by: Martin Storsjö <martin@martin.st>

When we don't adjust the Period start time, we don't need to
parse the earliest_presentation_time from the sidx boxes either.
Signed-off-by: Martin Storsjö <martin@martin.st>

This was only necessary to get playback to start with dash.js 1.2.0,
it has been fixed in the git version.

The previous behaviour was incorrect - the Period's start time
is irrespective of the actual first timestamp of the contents
within the period. The Period start time only says when, within the
global timeline, this particular piece should start to be played
back.
Signed-off-by: Martin Storsjö <martin@martin.st>

This fixes playback with dash.js, when the input is one separate
mp4 file per track.
Signed-off-by: Martin Storsjö <martin@martin.st>

This tool can write an MPD file for fragmented MP4 files with
a sidx index at the start of the file.
Signed-off-by: Martin Storsjö <martin@martin.st>

Whenever av_gettime() is used to measure relative period of time,
av_gettime_relative() is prefered as it guarantee monotonic time
on supported platforms.
Signed-off-by: Martin Storsjö <martin@martin.st>

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

Read the fragment duration from the trun sample data, rather than
assuming that there are no gaps.
Signed-off-by: Martin Storsjö <martin@martin.st>

The input file may not have consistent start times, stream durations and
chunk durations. This patch at least removes negative durations that
make chromecast unhappy, and correctly sets starting time on chunks so
that the split (or .ismf) outputs match the manifest.
Signed-off-by: Martin Storsjö <martin@martin.st>

Previously, this could create files named "(null).ismf", if the -ismf
parameter is specified (before an input file name), but without
specifying any base name.
Signed-off-by: Martin Storsjö <martin@martin.st>

This is a non-standard file that maps the MSS segment names to offsets
in the ISMV file. This can be used to build a custom MSS streaming
server without splitting the ISMV into separate files.
Signed-off-by: Martin Storsjö <martin@martin.st>

This creates best-effort results from input that is missing stream
contents, there are warnings printed when this happens.
Signed-off-by: Martin Storsjö <martin@martin.st>

This improves error messages for completely and somewhat broken inputs.
Signed-off-by: Martin Storsjö <martin@martin.st>

This avoids a number of redefinition warnings on MinGW64.

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

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

This allows storing the .ismv/.isma/.ismc files separately from
the .ism file on a server, without having to manually edit the
.ism file after generating it with the ismindex tool.
Signed-off-by: Martin Storsjö <martin@martin.st>

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

Without this cast, the BE_32() expression is sign extended when
assigned to an uint64_t, since the uint8_t|uint8_t expression
is promoted to an int.

Also avoid undefined behaviour when left shifting an uint8_t
by 24 by casting it to an uint32_t explicitly before shifting.

Based on a patch by Michael Niedermayer.
Signed-off-by: Martin Storsjö <martin@martin.st>

CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>

This silences a warning in the coverity static analyzer.
Signed-off-by: Martin Storsjö <martin@martin.st>

These variables are assigned the return values of ftello, which
returns an off_t, which is a signed type. On errors, ftello returns
-1, thus make sure this error return value can be stored properly.
Signed-off-by: Martin Storsjö <martin@martin.st>

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

qt-faststart doesn't use the normal libav headers at all since
it's supposed to be a completely standalone tool, so we implement
the macro locally in this file.
Signed-off-by: Martin Storsjö <martin@martin.st>

Copying data in chunks of 1 KB is a little wasteful.

64 KB should still easily fit on the stack, so there's no need
to allocate it dynamically.
Signed-off-by: Martin Storsjö <martin@martin.st>

This avoids the caller having to calculate the byte rate if wanting
to push a file in a rate resembling realtime.
Signed-off-by: Martin Storsjö <martin@martin.st>

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

This reduces the risk for overflow in pathlogical cases.
Signed-off-by: Martin Storsjö <martin@martin.st>

If the input file contains other tracks (non video/audio) that
aren't included in ismindex, the global file duration as returned
by libavformat might not be equal to the maximum of the duration
of the actual included tracks.
Signed-off-by: Martin Storsjö <martin@martin.st>

The stream duration is used for calculating the duration of the
last fragment easily without manually parsing anything else than
the mfra/tfra atoms. When the global file duration was used
previously, the duration of the last fragment could end up wrong
if the streams weren't equally long.
Signed-off-by: Martin Storsjö <martin@martin.st>

os_support.h contains more precise workarounds for non-POSIX mkdir().