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]> --- v2: reword commit message --- libavformat/dashenc.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/libavformat/dashenc.c b/libavformat/dashenc.c index 98722cd..ae1bb0b 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 + double bitrate = (int)( (double) range_length * 8.0 * AV_TIME_BASE / (double)(os->max_pts - os->start_pts) ); + if (bitrate >= 0 && bitrate <= INT64_MAX) { + 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); } -- 2.10.2 _______________________________________________ libav-devel mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-devel
