Up until now, it was simply presumed that the first packet had a pts of
zero; otherwise the duration of the first chunk was wrong.
Signed-off-by: Andreas Rheinhardt <andreas.rheinha...@googlemail.com>
---
libavformat/webm_chunk.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/libavformat/webm_chunk.c b/libavformat/webm_chunk.c
index 391fee721a..d45ebfb1e5 100644
--- a/libavformat/webm_chunk.c
+++ b/libavformat/webm_chunk.c
@@ -52,7 +52,7 @@ typedef struct WebMChunkContext {
int chunk_index;
char *http_method;
uint64_t duration_written;
- int prev_pts;
+ int64_t prev_pts;
ff_const59 AVOutputFormat *oformat;
AVFormatContext *avf;
} WebMChunkContext;
@@ -124,6 +124,7 @@ static int webm_chunk_write_header(AVFormatContext *s)
wc->oformat = av_guess_format("webm", s->url, "video/webm");
if (!wc->oformat)
return AVERROR_MUXER_NOT_FOUND;
+ wc->prev_pts = AV_NOPTS_VALUE;
ret = chunk_mux_init(s);
if (ret < 0)
@@ -211,9 +212,10 @@ static int webm_chunk_write_packet(AVFormatContext *s,
AVPacket *pkt)
int ret;
if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
- wc->duration_written += av_rescale_q(pkt->pts - wc->prev_pts,
- st->time_base,
- (AVRational) {1, 1000});
+ if (wc->prev_pts != AV_NOPTS_VALUE)
+ wc->duration_written += av_rescale_q(pkt->pts - wc->prev_pts,
+ st->time_base,
+ (AVRational) {1, 1000});
wc->prev_pts = pkt->pts;
}
--
2.19.2
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