fix Apple encoder issues (#1731)

* enable check_availability_streaming for apple-hevc

* fix VT H264 cannot record to FLV

* fix obs exception "Invalid data found when processing
 inputCouldn't initialize muxer" by returning false since this
Apple VT H.264 Hardware Encoder does not record to this format
* fix https://app.asana.com/1/1083097041131/project/1207748235152481/task/1215301313110016?focus=true

Author: sandboxcoder

obs-studio-server/source/osn-encoders.cpp

@@ -70,7 +70,7 @@ const std::vector<osn::EncoderUtils::EncoderSettings> osn::EncoderUtils::videoEn
 	 APPLE_HARDWARE_VIDEO_ENCODER_M1, "", true, true, true, false, true, false, PRESET_APPLE, FAMILY_APPLE},
 	// get_simple_output_encoder had Apple HEVC so add it here, never used with an advanced name but follow the pattern of M1 above
 	{"Apple VT HEVC Hardware Encoder", APPLE_HARDWARE_VIDEO_ENCODER_HEVC, "Hardware (Apple, HEVC)", SIMPLE_ENCODER_APPLE_HEVC,
-	 APPLE_HARDWARE_VIDEO_ENCODER_HEVC, "", true, true, true, false, true, false, PRESET_APPLE, FAMILY_APPLE},
+	 APPLE_HARDWARE_VIDEO_ENCODER_HEVC, "", true, true, true, true, true, false, PRESET_APPLE, FAMILY_APPLE},
 	// AMD HW H.264
 	{"AMD HW H.264", ADVANCED_ENCODER_AMD, "Hardware (AMD, H.264)", SIMPLE_ENCODER_AMD, ADVANCED_ENCODER_AMD, "", true, true, true, false, true, false,
 	 PRESET_AMD, FAMILY_AMD},
@@ -214,6 +214,9 @@ bool osn::EncoderUtils::isEncoderCompatible(std::string encoderName, obs_service
 		}
 		if (!containerSupportsCodec(container, codec))
 			return false;
+		if (container == "flv" && videoEncoderOptions[checkIndex].family == FAMILY_APPLE) {
+			return false;
+		}
 	}
 
 	return true;