fftools/ffmpeg: convert timestamps inside the muxer

Packets submitted to the muxer now have their timebase attached to them,
so the muxer can do conversion to muxing timebase and avoid exposing it
to callers.

1 files changed, 6 insertions, 0 deletions

diff --git a/fftools/ffmpeg_mux.c b/fftools/ffmpeg_mux.c
index 121796a55a..dc2d189ff0 100644
--- a/fftools/ffmpeg_mux.c
+++ b/fftools/ffmpeg_mux.c
@@ -334,6 +334,12 @@ void of_output_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int eof)
     if (!eof && pkt->dts != AV_NOPTS_VALUE)
         ost->last_mux_dts = av_rescale_q(pkt->dts, pkt->time_base, AV_TIME_BASE_Q);
 
+    /* rescale timestamps to the muxing timebase */
+    if (!eof) {
+        av_packet_rescale_ts(pkt, pkt->time_base, ost->mux_timebase);
+        pkt->time_base = ost->mux_timebase;
+    }
+
     /* apply the output bitstream filters */
     if (ms->bsf_ctx) {
         int bsf_eof = 0;