From 12c132006c97502d30ff51d245102c3eb1a7a37f Mon Sep 17 00:00:00 2001
From: Hunter Kvalevog <hunter@kvog.sh>
Date: Fri, 3 Jul 2026 21:34:39 -0500
Subject: ffmpeg-shadertoy: flush encoder

---
 ffmpeg-shadertoy/ffmpeg-shadertoy.c | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'ffmpeg-shadertoy')

diff --git a/ffmpeg-shadertoy/ffmpeg-shadertoy.c b/ffmpeg-shadertoy/ffmpeg-shadertoy.c
index 9ecd9c7..c7779ea 100644
--- a/ffmpeg-shadertoy/ffmpeg-shadertoy.c
+++ b/ffmpeg-shadertoy/ffmpeg-shadertoy.c
@@ -324,6 +324,12 @@ int main(int argc, const char **argv)
         ret = avcodec_send_frame(avcc, dst_frame);
         ASSERT_AV(ret, "Failed to send frame to encoder");
 
+        // After the last frame, flush the encoder
+        if (quit || t + 1.0f / (double)a_r > (double)a_t) {
+            ret = avcodec_send_frame(avcc, 0);
+            ASSERT_AV(ret, "Failed to flush encoder");
+        }
+
         // Receive 0 or more packets from encoder
         while (ret >= 0) {
             ret = avcodec_receive_packet(avcc, pkt);
-- 
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