From cbca79b95baa2b2cf39b72d0a0b2b3de0725959a Mon Sep 17 00:00:00 2001
From: Romain Vimont <rom@rom1v.com>
Date: Sun, 12 Mar 2023 12:39:05 +0100
Subject: [PATCH] Fix v4l2 sink

The codec id to write as codec parameters is the one from the v4l2
encoder, not from the decoder.

Regression introduced by be985b8242e0626288674b84c5039725170f8f0c.

Fixes #3795 <https://github.com/Genymobile/scrcpy/issues/3795>
---
 app/src/v4l2_sink.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/app/src/v4l2_sink.c b/app/src/v4l2_sink.c
index 717d2bd5..3b3eb8d0 100644
--- a/app/src/v4l2_sink.c
+++ b/app/src/v4l2_sink.c
@@ -210,6 +210,9 @@ sc_v4l2_sink_open(struct sc_v4l2_sink *vs, const AVCodecContext *ctx) {
         goto error_avformat_free_context;
     }
 
+    // The codec is from the v4l2 encoder, not from the decoder
+    ostream->codecpar->codec_id = encoder->id;
+
     int ret = avio_open(&vs->format_ctx->pb, vs->device_name, AVIO_FLAG_WRITE);
     if (ret < 0) {
         LOGE("Failed to open output device: %s", vs->device_name);