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mkvmuxer: Write last block in each Cluster with Duration

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This helps browsers implementing Media Source Extensions (MSE) to
know the exact duration of a Cluster without relying on the next
Cluster.

Change-Id: Idd0422e432430c5702a4864740f89fc6d3c85189
This commit is contained in:
Vignesh Venkatasubramanian
2016-03-14 16:33:46 -07:00
parent 008aa63d6a
commit 0407360dcf
7 changed files with 345 additions and 48 deletions
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9
sample_muxer.cpp
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@@ -54,6 +54,8 @@ void Usage() {
printf(" -video_track_number <int> >0 Changes the video track number\n");
printf(" -chunking <string> Chunk output\n");
printf(" -copy_tags <int> >0 Copies the tags\n");
printf(" -accurate_cluster_duration <int> ");
printf(">0 Writes the last frame in each cluster with Duration\n");
printf("\n");
printf("Video options:\n");
printf(" -display_width <int> Display width in pixels\n");
@@ -164,6 +166,7 @@ int main(int argc, char* argv[]) {
bool chunking = false;
bool copy_tags = false;
const char* chunk_name = NULL;
bool accurate_cluster_duration = false;
bool output_cues_block_number = true;
@@ -219,6 +222,10 @@ int main(int argc, char* argv[]) {
chunk_name = argv[++i];
} else if (!strcmp("-copy_tags", argv[i]) && i < argc_check) {
copy_tags = strtol(argv[++i], &end, 10) == 0 ? false : true;
} else if (!strcmp("-accurate_cluster_duration", argv[i]) &&
i < argc_check) {
accurate_cluster_duration =
strtol(argv[++i], &end, 10) == 0 ? false : true;
} else if (!strcmp("-display_width", argv[i]) && i < argc_check) {
display_width = strtol(argv[++i], &end, 10);
} else if (!strcmp("-display_height", argv[i]) && i < argc_check) {
@@ -297,6 +304,8 @@ int main(int argc, char* argv[]) {
return EXIT_FAILURE;
}
muxer_segment.AccurateClusterDuration(accurate_cluster_duration);
if (live_mode)
muxer_segment.set_mode(libwebm::mkvmuxer::Segment::kLive);
else