From 5776d3c9e00d60365938db2df659ede1c2cc9cb1 Mon Sep 17 00:00:00 2001
From: will-v-pi <108662275+will-v-pi@users.noreply.github.com>
Date: Mon, 14 Oct 2024 14:42:18 +0100
Subject: [PATCH] Fix V4L2 encoder not releasing requests

Signed-off-by: William Vinnicombe <william.vinnicombe@raspberrypi.com>
---
 picamera2/encoders/v4l2_encoder.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/picamera2/encoders/v4l2_encoder.py b/picamera2/encoders/v4l2_encoder.py
index 5f3944dd..5f9e5c38 100644
--- a/picamera2/encoders/v4l2_encoder.py
+++ b/picamera2/encoders/v4l2_encoder.py
@@ -189,6 +189,9 @@ def thread_poll(self, buf_available):
                 # few hundred ms than wait forever. Note that self.buf_frame.qsize()
                 # frames (usually just 1) are getting dropped here, and won't be
                 # encoded. I've only ever seen this on a Pi Zero.
+                while self.buf_frame.qsize() > 0:
+                    queue_item = self.buf_frame.get()
+                    queue_item.release()
                 break
 
             for _, event in events: