ffmpeg: replace magic number with VSYNC_CFR

[ffmpeg] / ffmpeg.c

diff --git a/ffmpeg.c b/ffmpeg.c
index 4b278a25f57f3aec5147347d004bfe0daa9787a1..36e9c2b23d3b6fe8e446e413783062ffebdf50cf 100644 (file)
--- a/ffmpeg.c
+++ b/ffmpeg.c
@@ -209,17 +209,29 @@ static void sub2video_update(InputStream *ist, AVSubtitle *sub)
     AVFilterBufferRef *ref = ist->sub2video.ref;
     int8_t *dst;
     int     dst_linesize;
-    int i;
-    int64_t pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ist->st->time_base);
+    int num_rects, i;
+    int64_t pts, end_pts;
 
     if (!ref)
         return;
+    if (sub) {
+        pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000,
+                                 AV_TIME_BASE_Q, ist->st->time_base);
+        end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000,
+                                 AV_TIME_BASE_Q, ist->st->time_base);
+        num_rects = sub->num_rects;
+    } else {
+        pts       = ist->sub2video.end_pts;
+        end_pts   = INT64_MAX;
+        num_rects = 0;
+    }
     dst          = ref->data    [0];
     dst_linesize = ref->linesize[0];
     memset(dst, 0, h * dst_linesize);
-    for (i = 0; i < sub->num_rects; i++)
+    for (i = 0; i < num_rects; i++)
         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
     sub2video_push_ref(ist, pts);
+    ist->sub2video.end_pts = end_pts;
 }
 
 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
@@ -242,6 +254,8 @@ static void sub2video_heartbeat(InputStream *ist, int64_t pts)
         /* do not send the heartbeat frame if the subtitle is already ahead */
         if (pts2 <= ist2->sub2video.last_pts)
             continue;
+        if (pts2 >= ist2->sub2video.end_pts)
+            sub2video_update(ist2, NULL);
         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
         if (nb_reqs)
@@ -789,7 +803,7 @@ static void do_video_out(AVFormatContext *s,
 
     format_video_sync = video_sync_method;
     if (format_video_sync == VSYNC_AUTO)
-        format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
+        format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
 
     switch (format_video_sync) {
     case VSYNC_CFR: