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ffmpeg.c: fix calculation of input file duration in seek_to_start()

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Fixes looping files without audio or when using stream_copy, where
ist->nb_samples is not set since no decoding is done.

This fixes ticket #5719 and also fixes an endless loop with the sample
in ticket #6139.

Signed-off-by: Peter Große <pegro@friiks.de>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Peter Große 2017-10-29 12:08:05 +01:00 committed by Michael Niedermayer
parent b9cd26f556
commit 3ddb887c88
1 changed files with 2 additions and 2 deletions
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4
fftools/ffmpeg.c
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@ -4150,9 +4150,9 @@ static int seek_to_start(InputFile *ifile, AVFormatContext *is)
continue;
} else {
if (ist->framerate.num) {
duration = av_rescale_q(1, ist->framerate, ist->st->time_base);
duration = av_rescale_q(1, av_inv_q(ist->framerate), ist->st->time_base);
} else if (ist->st->avg_frame_rate.num) {
duration = av_rescale_q(1, ist->st->avg_frame_rate, ist->st->time_base);
duration = av_rescale_q(1, av_inv_q(ist->st->avg_frame_rate), ist->st->time_base);
} else duration = 1;
}
if (!ifile->duration)