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]> --- v3: replaced unnecessary casts to double --- 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); } -- 2.10.2 _______________________________________________ libav-devel mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-devel
