Fix [#21257] Renders blank images when audio clip is present.

Only render sequencer when there are non-audio strips on the timeline.

1 files changed, 19 insertions, 1 deletions

diff --git a/source/blender/render/intern/source/pipeline.c b/source/blender/render/intern/source/pipeline.c
index f9089e7399b..dfe61b29109 100644
--- a/source/blender/render/intern/source/pipeline.c
+++ b/source/blender/render/intern/source/pipeline.c
@@ -2403,6 +2403,24 @@ static void renderresult_stampinfo(Scene *scene)
 	RE_ReleaseResultImage(re);
 }
 
+static int seq_render_active(Render *re)
+{
+	Editing *ed;
+	Sequence *seq;
+
+	ed = re->scene->ed;
+	
+	if (!(re->r.scemode & R_DOSEQ) || !ed || !ed->seqbase.first)
+		return 0;
+	
+	for (seq= ed->seqbase.first; seq; seq= seq->next) {
+		if (seq->type != SEQ_SOUND)
+			return 1;
+	}
+	
+	return 0;
+}
+
 static void do_render_seq(Render * re)
 {
 	static int recurs_depth = 0;
@@ -2484,7 +2502,7 @@ static void do_render_all_options(Render *re)
 	if(external_render_3d(re, 1)) {
 		/* in this case external render overrides all */
 	}
-	else if((re->r.scemode & R_DOSEQ) && re->scene->ed && re->scene->ed->seqbase.first) {
+	else if(seq_render_active(re)) {
 		/* note: do_render_seq() frees rect32 when sequencer returns float images */
 		if(!re->test_break(re->tbh)) 
 			do_render_seq(re);