Fix AV1 demuxing

For AV1, the config packet must not be merged with the next non-config
packet.

This fixes the following error when passing --video-codec=av1:

> INFO: [FFmpeg] libdav1d 1.3.0
> ERROR: [FFmpeg] Unknown OBU type 0 of size 29393
> ERROR: [FFmpeg] Error parsing OBU data
> ERROR: Decoder 'video': could not send video packet: -1094995529

PR #4487 <https://github.com/Genymobile/scrcpy/pull/4487>

app/src/demuxer.c

@@ -227,8 +227,9 @@ run_demuxer(void *data) {
     }
 
     // Config packets must be merged with the next non-config packet only for
-    // video streams
-    bool must_merge_config_packet = codec->type == AVMEDIA_TYPE_VIDEO;
+    // H.26x
+    bool must_merge_config_packet = raw_codec_id == SC_CODEC_ID_H264
+                                 || raw_codec_id == SC_CODEC_ID_H265;
 
     struct sc_packet_merger merger;
 

app/src/scrcpy.c

@@ -419,12 +419,21 @@ scrcpy(struct scrcpy_options *options) {
         sdl_set_hints(options->render_driver);
     }
 
-    // Initialize the video subsystem even if --no-video or --no-video-playback
-    // is passed so that clipboard synchronization still works.
-    // <https://github.com/Genymobile/scrcpy/issues/4418>
-    if (SDL_Init(SDL_INIT_VIDEO)) {
-        LOGE("Could not initialize SDL video: %s", SDL_GetError());
-        goto end;
+    if (options->video_playback ||
+            (options->control && options->clipboard_autosync)) {
+        // Initialize the video subsystem even if --no-video or
+        // --no-video-playback is passed so that clipboard synchronization
+        // still works.
+        // <https://github.com/Genymobile/scrcpy/issues/4418>
+        if (SDL_Init(SDL_INIT_VIDEO)) {
+            // If it fails, it is an error only if video playback is enabled
+            if (options->video_playback) {
+                LOGE("Could not initialize SDL video: %s", SDL_GetError());
+                goto end;
+            } else {
+                LOGW("Could not initialize SDL video: %s", SDL_GetError());
+            }
+        }
     }
 
     if (options->audio_playback) {