Merge pull request #1644 from seydx/check-h265

Add support for H.265 codec verification

Author: AlexxIT

www/video-rtc.js

@@ -580,7 +580,11 @@ export class VideoRTC extends HTMLElement {
 
             /** @type {MediaStream} */
             const stream = video2.srcObject;
-            if (stream.getVideoTracks().length > 0) rtcPriority += 0x220;
+            if (stream.getVideoTracks().length > 0) {
+                // not the best, but a pretty simple way to check a codec
+                const isH265Supported =  this.pc.remoteDescription.sdp.includes('H265/90000');
+                rtcPriority += isH265Supported ? 0x240 : 0x220;
+            }
             if (stream.getAudioTracks().length > 0) rtcPriority += 0x102;
 
             if (this.mseCodecs.indexOf('hvc1.') >= 0) msePriority += 0x230;