If the value is negative then it means padding at the start of the packet
instead of at the end.
Based on a patch by Hendrik Leppkes.
Reviewed-by: James Zern <jzern-at-google.com@ffmpeg.org>
Signed-off-by: James Almer <jamrial@gmail.com>
av_free(pkt);
return AVERROR(ENOMEM);
}
- AV_WL32(side_data, 0);
- AV_WL32(side_data + 4, av_rescale_q(discard_padding,
+ discard_padding = av_rescale_q(discard_padding,
(AVRational){1, 1000000000},
- (AVRational){1, st->codecpar->sample_rate}));
+ (AVRational){1, st->codecpar->sample_rate});
+ if (discard_padding > 0) {
+ AV_WL32(side_data + 4, discard_padding);
+ } else {
+ AV_WL32(side_data, -discard_padding);
+ }
}
if (track->ms_compat)