2017-02-20 6:22 GMT+09:00 Martin Storsjö <mar...@martin.st>:
> In these cases, the CTTS flag is set, but no edit list is necessary.
> ---
> libavformat/movenc.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/libavformat/movenc.c b/libavformat/movenc.c
> index 713c145..f1c2253 100644
> --- a/libavformat/movenc.c
> +++ b/libavformat/movenc.c
> @@ -1811,8 +1811,7 @@ static int mov_write_trak_tag(AVIOContext *pb,
> MOVMuxContext *mov,
> ffio_wfourcc(pb, "trak");
> mov_write_tkhd_tag(pb, mov, track, st);
> if (track->start_dts != AV_NOPTS_VALUE &&
> - (track->mode == MODE_PSP || track->flags & MOV_TRACK_CTTS ||
> - track->start_dts || is_clcp_track(track))) {
> + (track->mode == MODE_PSP || track->start_dts ||
> is_clcp_track(track))) {
> if (mov->use_editlist)
> mov_write_edts_tag(pb, mov, track); // PSP Movies require
> edts box
> else if ((track->entry && track->cluster[0].dts) || track->mode
> == MODE_PSP || is_clcp_track(track))
> --
> 2.10.1 (Apple Git-78)
>
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I dislike this patch since an implicit one‐to‐one mapping of presentation
timeline and media timeline does not specify the relative rate. For
example, QuickTime plays a track at double rate relative to a corresponding
media if the media duration is twice as much as the track duration.
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