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| author | Giorgio Vazzana <mywing81@gmail.com> | 2013-03-11 16:39:52 +0100 |
|---|---|---|
| committer | Nicolas George <nicolas.george@normalesup.org> | 2013-03-12 17:14:47 +0100 |
| commit | ee4a6586952ba0ac8309468b04631da12767cebd (patch) | |
| tree | 500f306af127986734aa8c649fb939df816efaca | |
| parent | 7093b7534fd385263f678e48b7ef3177ad58da06 (diff) | |
| download | ffmpeg-ee4a6586952ba0ac8309468b04631da12767cebd.tar.gz | |
lavd/v4l2: fix bug in init_convert_timestamp()
The current code returned a period=0, resulting in identical pts for all frames
after time-filtering. This is because AV_TIME_BASE_Q={1, AV_TIME_BASE} and
not {AV_TIME_BASE, 1}. With this patch the correct period in microseconds is computed.
| -rw-r--r-- | libavdevice/v4l2.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavdevice/v4l2.c b/libavdevice/v4l2.c index dec82b6568..0c1eb85014 100644 --- a/libavdevice/v4l2.c +++ b/libavdevice/v4l2.c @@ -527,8 +527,8 @@ static int init_convert_timestamp(AVFormatContext *ctx, int64_t ts) now = av_gettime_monotonic(); if (s->ts_mode == V4L_TS_MONO2ABS || (ts <= now + 1 * AV_TIME_BASE && ts >= now - 10 * AV_TIME_BASE)) { - int64_t period = av_rescale_q(1, AV_TIME_BASE_Q, - ctx->streams[0]->avg_frame_rate); + AVRational tb = {AV_TIME_BASE, 1}; + int64_t period = av_rescale_q(1, tb, ctx->streams[0]->avg_frame_rate); av_log(ctx, AV_LOG_INFO, "Detected monotonic timestamps, converting\n"); /* microseconds instead of seconds, MHz instead of Hz */ s->timefilter = ff_timefilter_new(1, period, 1.0E-6); |