av_guess_sample_aspect_ratio 1893 ffplay.c               frame->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, frame);
av_guess_sample_aspect_ratio 3007 ffplay.c               AVRational sar = av_guess_sample_aspect_ratio(ic, st, NULL);
av_guess_sample_aspect_ratio 1795 ffprobe.c              sar = av_guess_sample_aspect_ratio(fmt_ctx, stream, frame);
av_guess_sample_aspect_ratio 2098 ffprobe.c                  sar = av_guess_sample_aspect_ratio(fmt_ctx, stream, NULL);
av_guess_sample_aspect_ratio 2640 libavformat/avformat.h AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame);