obs-webrtc: Only advertise relevant codecs for a or v-only outputs

A video-only output should not advertise any audio codecs.

plugins/obs-webrtc/whip-output.cpp

@@ -603,6 +603,12 @@ void WHIPOutput::Send(void *data, uintptr_t size, uint64_t duration,
 void register_whip_output()
 {
  const uint32_t base_flags = OBS_OUTPUT_ENCODED | OBS_OUTPUT_SERVICE;
+#ifdef ENABLE_HEVC
+ const char *video_codecs = "h264;hevc;av1";
+#else
+ const char *video_codecs = "h264;av1";
+#endif
+ const char *audio_codecs = "opus";
 
  struct obs_output_info info = {};
  info.id = "whip_output";
@@ -638,21 +644,19 @@ void register_whip_output()
  info.get_connect_time_ms = [](void *priv_data) -> int {
  return static_cast<WHIPOutput *>(priv_data)->GetConnectTime();
  };
-#ifdef ENABLE_HEVC
- info.encoded_video_codecs = "h264;hevc;av1";
-#else
- info.encoded_video_codecs = "h264;av1";
-#endif
- info.encoded_audio_codecs = "opus";
+ info.encoded_video_codecs = video_codecs;
+ info.encoded_audio_codecs = audio_codecs;
  info.protocols = "WHIP";
-
  obs_register_output(&info);
 
  info.id = "whip_output_video";
  info.flags = OBS_OUTPUT_VIDEO | base_flags;
+ info.encoded_audio_codecs = nullptr;
  obs_register_output(&info);
 
  info.id = "whip_output_audio";
  info.flags = OBS_OUTPUT_AUDIO | base_flags;
+ info.encoded_video_codecs = nullptr;
+ info.encoded_audio_codecs = audio_codecs;
  obs_register_output(&info);
 }