webrtc: fixup h265 keyframe hunting

common/src/rtsp-server.ts

@@ -96,6 +96,8 @@ export const H265_NAL_TYPE_PPS = 34;
 export const H265_NAL_TYPE_IDR_N = 19;
 export const H265_NAL_TYPE_IDR_W = 20;
 export const H265_NAL_TYPE_FU = 49;
+export const H265_NAL_TYPE_SEI_PREFIX = 39;
+export const H265_NAL_TYPE_SEI_SUFFIX = 40;
 
 export function findH264NaluType(streamChunk: StreamChunk, naluType: number) {
     if (streamChunk.type !== 'h264')

common/src/sdp-utils.ts

@@ -383,17 +383,9 @@ export function getSpsPpsVps(
     const pps = parameters['sprop-pps'];
     const vps = parameters['sprop-vps'];
 
-    if (!sps || !pps || !vps) {
-        return {
-            sps: undefined,
-            pps: undefined,
-            vps: undefined,
-        };
-    }
-
     return {
-        vps: Buffer.from(vps, 'base64'),
-        sps: Buffer.from(sps, 'base64'),
-        pps: Buffer.from(pps, 'base64'),
+        sps: sps ? Buffer.from(sps, 'base64') : undefined,
+        pps: pps ? Buffer.from(pps, 'base64') : undefined,
+        vps: vps ? Buffer.from(vps, 'base64') : undefined,
     }
 }

plugins/webrtc/package-lock.json

@@ -1,12 +1,12 @@
 {
    "name": "@scrypted/webrtc",
-   "version": "0.2.66",
+   "version": "0.2.67",
    "lockfileVersion": 2,
    "requires": true,
    "packages": {
       "": {
          "name": "@scrypted/webrtc",
-         "version": "0.2.66",
+         "version": "0.2.67",
          "dependencies": {
             "@scrypted/common": "file:../../common",
             "@scrypted/sdk": "file:../../sdk",

plugins/webrtc/package.json

@@ -1,6 +1,6 @@
 {
    "name": "@scrypted/webrtc",
-   "version": "0.2.66",
+   "version": "0.2.67",
    "scripts": {
       "scrypted-setup-project": "scrypted-setup-project",
       "prescrypted-setup-project": "scrypted-package-json",

plugins/webrtc/src/h265-packetizer.ts

@@ -430,10 +430,13 @@ export class H265Repacketizer {
             return;
         }
 
-        if (!this.codecInfo?.vps || !this.codecInfo?.sps || !this.codecInfo?.pps)
+        // vps is not required.
+        if (!this.codecInfo?.sps || !this.codecInfo?.pps)
             return;
 
-        const agg = [this.codecInfo.vps, this.codecInfo.sps, this.codecInfo.pps];
+        const agg = [this.codecInfo.sps, this.codecInfo.pps];
+        if (this.codecInfo.vps)
+            agg.unshift(this.codecInfo.vps);
         if (this.codecInfo?.sei)
             agg.push(this.codecInfo.sei);