Module: libav Branch: master Commit: 9df9309d233f59d9706444a1e24ac24139f2640d
Author: Peter Große <[email protected]> Committer: Martin Storsjö <[email protected]> Date: Mon Jan 30 13:49:44 2017 +0100 dashenc: calculate stream bitrate from first segment if not available Bandwidth information is required in the manifest, but not always provided by the demuxer. In that case calculate the bandwith based on the size and duration of the first segment. Signed-off-by: Peter Große <[email protected]> Signed-off-by: Martin Storsjö <[email protected]> --- libavformat/dashenc.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/libavformat/dashenc.c b/libavformat/dashenc.c index 98722cd..21acb90 100644 --- a/libavformat/dashenc.c +++ b/libavformat/dashenc.c @@ -834,6 +834,16 @@ static int dash_flush(AVFormatContext *s, int final, int stream) if (ret < 0) break; } + + if (!os->bit_rate) { + // calculate average bitrate of first segment + int64_t bitrate = (int64_t) range_length * 8 * AV_TIME_BASE / (os->max_pts - os->start_pts); + if (bitrate >= 0) { + os->bit_rate = bitrate; + snprintf(os->bandwidth_str, sizeof(os->bandwidth_str), + " bandwidth=\"%d\"", os->bit_rate); + } + } add_segment(os, filename, os->start_pts, os->max_pts - os->start_pts, start_pos, range_length, index_length); av_log(s, AV_LOG_VERBOSE, "Representation %d media segment %d written to: %s\n", i, os->segment_index, full_path); } _______________________________________________ libav-commits mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-commits
