[FFmpeg-cvslog] fftools/ffmpeg_demux: don't flag timestamps as unreliable if they are generated

[James Almer]

ffmpeg | branch: release/6.1 | James Almer <jamrial at gmail.com> | Wed Jul  9 16:45:05 2025 -0300| [78690eba61ccb0c06ca869acb899128c84178250] | committer: James Almer

fftools/ffmpeg_demux: don't flag timestamps as unreliable if they are generated

Regardless of the source being an AVFMT_NOTIMESTAMPS format, if the timestamps
are generated like when using the use_wallclock_as_timestamps demuxer option,
then they are reliable.

Fixes ticket #11268

Signed-off-by: James Almer <jamrial at gmail.com>
(cherry picked from commit 1787fade209b1ecbd4b911c9d77a52bcdec13fa6)

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=78690eba61ccb0c06ca869acb899128c84178250
---

 fftools/ffmpeg_demux.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/fftools/ffmpeg_demux.c b/fftools/ffmpeg_demux.c
index 350f233ab7..1ca40eda5a 100644
--- a/fftools/ffmpeg_demux.c
+++ b/fftools/ffmpeg_demux.c
@@ -1363,6 +1363,8 @@ int ifile_open(const OptionsContext *o, const char *filename)
     char *    data_codec_name = NULL;
     int scan_all_pmts_set = 0;
 
+    int64_t use_wallclock_as_timestamps;
+
     int64_t start_time     = o->start_time;
     int64_t start_time_eof = o->start_time_eof;
     int64_t stop_time      = o->stop_time;
@@ -1595,6 +1597,12 @@ int ifile_open(const OptionsContext *o, const char *filename)
     d->nb_streams_warn = ic->nb_streams;
 
     f->format_nots = !!(ic->iformat->flags & AVFMT_NOTIMESTAMPS);
+    ret = av_opt_get_int(ic, "use_wallclock_as_timestamps", 0, &use_wallclock_as_timestamps);
+    if (ret < 0)
+        return ret;
+
+    if (use_wallclock_as_timestamps)
+        f->format_nots = 0;
 
     f->readrate = o->readrate ? o->readrate : 0.0;
     if (f->readrate < 0.0f) {