virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2025-06-30 22:24:04 +02:00
Code Issues Releases Activity

lavfi/vf_libplacebo: only drain actually used PTS

Browse Source 
When combining multiple inputs, the output PTS may be less than the PTS
of the input. In this case, the current's code assumption of always
draining one value from the FIFO is incorrect. Replace by a smarter
function which drains only those PTS values that were actually consumed.
This commit is contained in:
Niklas Haas
2023-06-15 16:03:32 +02:00
parent 502b699a50
commit 6c41c3f928
1 changed files with 8 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
libavfilter/vf_libplacebo.c
View File

@ -971,6 +971,13 @@ static int handle_input(AVFilterContext *ctx, LibplaceboInput *input)
return 0;
}
static void drain_input_pts(LibplaceboInput *in, int64_t until)
{
int64_t pts;
while (av_fifo_peek(in->out_pts, &pts, 1, 0) >= 0 && pts <= until)
av_fifo_drain2(in->out_pts, 1);
}
static int libplacebo_activate(AVFilterContext *ctx)
{
int ret, retry = 0;
@ -1023,8 +1030,7 @@ static int libplacebo_activate(AVFilterContext *ctx)
ff_inlink_request_frame(in->link);
return 0;
case PL_QUEUE_OK:
if (!s->fps.num)
av_fifo_drain2(in->out_pts, 1);
drain_input_pts(in, out_pts);
return output_frame(ctx, out_pts);
case PL_QUEUE_ERR:
return AVERROR_EXTERNAL;