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

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>