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The following commit(s) were added to refs/heads/master by this push:
new 48c9c38684 fftools/ffmpeg_demux: Fix readrate sleep calculation
48c9c38684 is described below
commit 48c9c38684846fa6eedf22bdb6c60bb2a1d7a18b
Author: Desmond Liu <[email protected]>
AuthorDate: Mon Jan 5 13:34:24 2026 -0800
Commit: desmondliu <[email protected]>
CommitDate: Fri Jan 9 01:28:45 2026 +0000
fftools/ffmpeg_demux: Fix readrate sleep calculation
Calculation of max_pts and limit_pts may overflow because adding
(int64_t + int64_t + float) results in a float that easily
overflows. This can trigger a very long av_usleep().
---
fftools/ffmpeg_demux.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fftools/ffmpeg_demux.c b/fftools/ffmpeg_demux.c
index cb79dd7611..193967fce1 100644
--- a/fftools/ffmpeg_demux.c
+++ b/fftools/ffmpeg_demux.c
@@ -525,7 +525,7 @@ static void readrate_sleep(Demuxer *d)
pts = av_rescale(ds->dts, 1000000, AV_TIME_BASE);
now = av_gettime_relative();
wc_elapsed = now - d->wallclock_start;
- max_pts = stream_ts_offset + initial_burst + wc_elapsed * d->readrate;
+ max_pts = stream_ts_offset + initial_burst + (int64_t)(wc_elapsed *
d->readrate);
lag = FFMAX(max_pts - pts, 0);
if ( (!ds->lag && lag > 0.3 * AV_TIME_BASE) || ( lag > ds->lag + 0.3 *
AV_TIME_BASE) ) {
ds->lag = lag;
@@ -539,7 +539,7 @@ static void readrate_sleep(Demuxer *d)
ds->lag = ds->resume_wc = ds->resume_pts = 0;
if (ds->resume_wc) {
elapsed = now - ds->resume_wc;
- limit_pts = ds->resume_pts + elapsed * d->readrate_catchup;
+ limit_pts = ds->resume_pts + (int64_t)(elapsed *
d->readrate_catchup);
} else {
elapsed = wc_elapsed;
limit_pts = max_pts;
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