*/
AVRational ff_choose_timebase(AVFormatContext *s, AVStream *st, int min_precision);
+/**
+ * Chooses a timebase for muxing the specified stream.
+ */
+enum AVChromaLocation ff_choose_chroma_location(AVFormatContext *s, AVStream *st);
+
/**
* Generate standard extradata for AVC-Intra based on width/height and field
* order.