return t;
}
-float
+optional<float>
FFmpegExaminer::video_frame_rate () const
{
/* This use of r_frame_rate is debateable; there's a few different
return ContentTime (max (ContentTime::Type (1), length.get ()));
}
+optional<float>
+FFmpegExaminer::sample_aspect_ratio () const
+{
+ AVRational sar = av_guess_sample_aspect_ratio (_format_context, _format_context->streams[_video_stream], 0);
+ if (sar.num == 0) {
+ /* I assume this means that we don't know */
+ return optional<float> ();
+ }
+ return float (sar.num) / sar.den;
+}
+
string
FFmpegExaminer::audio_stream_name (AVStream* s) const
{