opensource/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2025-08-06 15:49:50 +08:00
Code Issues Packages Projects Releases Wiki Activity

avformat/segment: calculate segment durations correctly.

Browse Source 
segment_time and segment_times are defined as duration specifications, not
timestamps, so calculation of segment duration must account for initial
timestamp. Fixed.

FATE ref for segment-mp4-to-ts changed on account of avoiding premature
segment cut at the end of the first segment.
This commit is contained in:
Gyan Doshi
2023-01-07 15:10:52 +05:30
parent 2524d0b33b
commit 01f46f18db
2 changed files with 17 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
libavformat/segment.c
View File

@ -116,6 +116,7 @@ typedef struct SegmentContext {
int64_t initial_offset; ///< initial timestamps offset, expressed in microseconds
char *reference_stream_specifier; ///< reference stream specifier
int reference_stream_index;
int64_t reference_stream_first_pts; ///< initial timestamp, expressed in microseconds
int break_non_keyframes;
int write_empty;
@ -746,6 +747,8 @@ static int seg_init(AVFormatContext *s)
seg->reference_stream_index,
av_get_media_type_string(s->streams[seg->reference_stream_index]->codecpar->codec_type));
seg->reference_stream_first_pts = AV_NOPTS_VALUE;
seg->oformat = av_guess_format(seg->format, s->url, NULL);
if (!seg->oformat)
@ -898,6 +901,18 @@ calc_times:
pkt->flags & AV_PKT_FLAG_KEY,
pkt->stream_index == seg->reference_stream_index ? seg->frame_count : -1);
if (seg->reference_stream_first_pts == AV_NOPTS_VALUE &&
pkt->stream_index == seg->reference_stream_index &&
pkt->pts != AV_NOPTS_VALUE) {
seg->reference_stream_first_pts = av_rescale_q(pkt->pts, st->time_base, AV_TIME_BASE_Q);
}
if (seg->reference_stream_first_pts != AV_NOPTS_VALUE) {
end_pts += (INT64_MAX - end_pts >= seg->reference_stream_first_pts) ?
seg->reference_stream_first_pts :
INT64_MAX - end_pts;
}
if (pkt->pts != AV_NOPTS_VALUE)
pkt_pts_avtb = av_rescale_q(pkt->pts, st->time_base, AV_TIME_BASE_Q);