rebroadcast: improve cleanups

plugins/prebuffer-mixin/package-lock.json

@@ -1,22 +1,24 @@
 {
    "name": "@scrypted/prebuffer-mixin",
-   "version": "0.10.57",
+   "version": "0.10.58",
    "lockfileVersion": 2,
    "requires": true,
    "packages": {
       "": {
          "name": "@scrypted/prebuffer-mixin",
-         "version": "0.10.57",
+         "version": "0.10.58",
          "license": "Apache-2.0",
          "dependencies": {
             "@scrypted/common": "file:../../common",
+            "@scrypted/libav": "^1.0.199",
             "@scrypted/sdk": "file:../../sdk",
             "h264-sps-parser": "^0.2.1",
             "semver": "^7.3.7"
          },
          "devDependencies": {
             "@types/node": "^22.13.14",
-            "@types/semver": "^7.3.12"
+            "@types/semver": "^7.3.12",
+            "prebuild-install": "npm:@scrypted/prebuild-install@^7.1.9"
          }
       },
       "../../common": {
@@ -78,10 +80,34 @@
       "../sdk": {
          "extraneous": true
       },
+      "node_modules/@isaacs/fs-minipass": {
+         "version": "4.0.1",
+         "resolved": "https://registry.npmjs.org/@isaacs/fs-minipass/-/fs-minipass-4.0.1.tgz",
+         "integrity": "sha512-wgm9Ehl2jpeqP3zw/7mo3kRHFp5MEDhqAdwy1fTGkHAwnkGOVsgpvQhL8B5n1qlb01jV3n/bI0ZfZp5lWA1k4w==",
+         "license": "ISC",
+         "dependencies": {
+            "minipass": "^7.0.4"
+         },
+         "engines": {
+            "node": ">=18.0.0"
+         }
+      },
       "node_modules/@scrypted/common": {
          "resolved": "../../common",
          "link": true
       },
+      "node_modules/@scrypted/libav": {
+         "version": "1.0.199",
+         "resolved": "https://registry.npmjs.org/@scrypted/libav/-/libav-1.0.199.tgz",
+         "integrity": "sha512-sIrTRwa5CSZgnbCzPEB/laBNJ6RoZ3BKkVrgMCX/GE7oYCBcxIYtgFq942DVckXA6+A6NfXBR1lLt8a52SPpyQ==",
+         "hasInstallScript": true,
+         "dependencies": {
+            "detect-libc": "^2.0.3",
+            "follow-redirects": "^1.15.9",
+            "node-addon-api": "^8.3.1",
+            "tar": "^7.4.3"
+         }
+      },
       "node_modules/@scrypted/sdk": {
          "resolved": "../../sdk",
          "link": true
@@ -102,11 +128,369 @@
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          "dev": true
       },
+      "node_modules/base64-js": {
+         "version": "1.5.1",
+         "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.5.1.tgz",
+         "integrity": "sha512-AKpaYlHn8t4SVbOHCy+b5+KKgvR4vrsD8vbvrbiQJps7fKDTkjkDry6ji0rUJjC0kzbNePLwzxq8iypo41qeWA==",
+         "dev": true,
+         "funding": [
+            {
+               "type": "github",
+               "url": "https://github.com/sponsors/feross"
+            },
+            {
+               "type": "patreon",
+               "url": "https://www.patreon.com/feross"
+            },
+            {
+               "type": "consulting",
+               "url": "https://feross.org/support"
+            }
+         ],
+         "license": "MIT"
+      },
+      "node_modules/bl": {
+         "version": "4.1.0",
+         "resolved": "https://registry.npmjs.org/bl/-/bl-4.1.0.tgz",
+         "integrity": "sha512-1W07cM9gS6DcLperZfFSj+bWLtaPGSOHWhPiGzXmvVJbRLdG82sH/Kn8EtW1VqWVA54AKf2h5k5BbnIbwF3h6w==",
+         "dev": true,
+         "license": "MIT",
+         "dependencies": {
+            "buffer": "^5.5.0",
+            "inherits": "^2.0.4",
+            "readable-stream": "^3.4.0"
+         }
+      },
+      "node_modules/buffer": {
+         "version": "5.7.1",
+         "resolved": "https://registry.npmjs.org/buffer/-/buffer-5.7.1.tgz",
+         "integrity": "sha512-EHcyIPBQ4BSGlvjB16k5KgAJ27CIsHY/2JBmCRReo48y9rQ3MaUzWX3KVlBa4U7MyX02HdVj0K7C3WaB3ju7FQ==",
+         "dev": true,
+         "funding": [
+            {
+               "type": "github",
+               "url": "https://github.com/sponsors/feross"
+            },
+            {
+               "type": "patreon",
+               "url": "https://www.patreon.com/feross"
+            },
+            {
+               "type": "consulting",
+               "url": "https://feross.org/support"
+            }
+         ],
+         "license": "MIT",
+         "dependencies": {
+            "base64-js": "^1.3.1",
+            "ieee754": "^1.1.13"
+         }
+      },
+      "node_modules/chownr": {
+         "version": "3.0.0",
+         "resolved": "https://registry.npmjs.org/chownr/-/chownr-3.0.0.tgz",
+         "integrity": "sha512-+IxzY9BZOQd/XuYPRmrvEVjF/nqj5kgT4kEq7VofrDoM1MxoRjEWkrCC3EtLi59TVawxTAn+orJwFQcrqEN1+g==",
+         "license": "BlueOak-1.0.0",
+         "engines": {
+            "node": ">=18"
+         }
+      },
+      "node_modules/deep-extend": {
+         "version": "0.6.0",
+         "resolved": "https://registry.npmjs.org/deep-extend/-/deep-extend-0.6.0.tgz",
+         "integrity": "sha512-LOHxIOaPYdHlJRtCQfDIVZtfw/ufM8+rVj649RIHzcm/vGwQRXFt6OPqIFWsm2XEMrNIEtWR64sY1LEKD2vAOA==",
+         "dev": true,
+         "license": "MIT",
+         "engines": {
+            "node": ">=4.0.0"
+         }
+      },
+      "node_modules/detect-libc": {
+         "version": "2.0.3",
+         "resolved": "https://registry.npmjs.org/detect-libc/-/detect-libc-2.0.3.tgz",
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+         "license": "Apache-2.0",
+         "engines": {
+            "node": ">=8"
+         }
+      },
+      "node_modules/end-of-stream": {
+         "version": "1.4.4",
+         "resolved": "https://registry.npmjs.org/end-of-stream/-/end-of-stream-1.4.4.tgz",
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+         "dev": true,
+         "license": "MIT",
+         "dependencies": {
+            "once": "^1.4.0"
+         }
+      },
+      "node_modules/expand-template": {
+         "version": "2.0.3",
+         "resolved": "https://registry.npmjs.org/expand-template/-/expand-template-2.0.3.tgz",
+         "integrity": "sha512-XYfuKMvj4O35f/pOXLObndIRvyQ+/+6AhODh+OKWj9S9498pHHn/IMszH+gt0fBCRWMNfk1ZSp5x3AifmnI2vg==",
+         "dev": true,
+         "license": "(MIT OR WTFPL)",
+         "engines": {
+            "node": ">=6"
+         }
+      },
+      "node_modules/follow-redirects": {
+         "version": "1.15.9",
+         "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.15.9.tgz",
+         "integrity": "sha512-gew4GsXizNgdoRyqmyfMHyAmXsZDk6mHkSxZFCzW9gwlbtOW44CDtYavM+y+72qD/Vq2l550kMF52DT8fOLJqQ==",
+         "funding": [
+            {
+               "type": "individual",
+               "url": "https://github.com/sponsors/RubenVerborgh"
+            }
+         ],
+         "license": "MIT",
+         "engines": {
+            "node": ">=4.0"
+         },
+         "peerDependenciesMeta": {
+            "debug": {
+               "optional": true
+            }
+         }
+      },
+      "node_modules/fs-constants": {
+         "version": "1.0.0",
+         "resolved": "https://registry.npmjs.org/fs-constants/-/fs-constants-1.0.0.tgz",
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+         "license": "MIT"
+      },
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+         "resolved": "https://registry.npmjs.org/github-from-package/-/github-from-package-0.0.0.tgz",
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+         "license": "MIT"
+      },
       "node_modules/h264-sps-parser": {
          "version": "0.2.1",
          "resolved": "https://registry.npmjs.org/h264-sps-parser/-/h264-sps-parser-0.2.1.tgz",
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+      "node_modules/ieee754": {
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+         "dev": true,
+         "funding": [
+            {
+               "type": "github",
+               "url": "https://github.com/sponsors/feross"
+            },
+            {
+               "type": "patreon",
+               "url": "https://www.patreon.com/feross"
+            },
+            {
+               "type": "consulting",
+               "url": "https://feross.org/support"
+            }
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+         "license": "BSD-3-Clause"
+      },
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+         "version": "2.0.4",
+         "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
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+         "license": "ISC"
+      },
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+         "resolved": "https://registry.npmjs.org/ini/-/ini-1.3.8.tgz",
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+         "license": "ISC"
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+         "license": "MIT",
+         "funding": {
+            "url": "https://github.com/sponsors/ljharb"
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+         "license": "MIT",
+         "bin": {
+            "mkdirp": "dist/cjs/src/bin.js"
+         },
+         "engines": {
+            "node": ">=10"
+         },
+         "funding": {
+            "url": "https://github.com/sponsors/isaacs"
+         }
+      },
+      "node_modules/mkdirp-classic": {
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+         "dev": true,
+         "license": "MIT"
+      },
+      "node_modules/napi-build-utils": {
+         "version": "1.0.2",
+         "resolved": "https://registry.npmjs.org/napi-build-utils/-/napi-build-utils-1.0.2.tgz",
+         "integrity": "sha512-ONmRUqK7zj7DWX0D9ADe03wbwOBZxNAfF20PlGfCWQcD3+/MakShIHrMqx9YwPTfxDdF1zLeL+RGZiR9kGMLdg==",
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+         "license": "MIT"
+      },
+      "node_modules/node-abi": {
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+         "resolved": "https://registry.npmjs.org/node-abi/-/node-abi-3.74.0.tgz",
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+         "dependencies": {
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+         },
+         "engines": {
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+         }
+      },
+      "node_modules/node-addon-api": {
+         "version": "8.3.1",
+         "resolved": "https://registry.npmjs.org/node-addon-api/-/node-addon-api-8.3.1.tgz",
+         "integrity": "sha512-lytcDEdxKjGJPTLEfW4mYMigRezMlyJY8W4wxJK8zE533Jlb8L8dRuObJFWg2P+AuOIxoCgKF+2Oq4d4Zd0OUA==",
+         "license": "MIT",
+         "engines": {
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+         }
+      },
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+         "dev": true,
+         "license": "ISC",
+         "dependencies": {
+            "wrappy": "1"
+         }
+      },
+      "node_modules/prebuild-install": {
+         "name": "@scrypted/prebuild-install",
+         "version": "7.1.9",
+         "resolved": "https://registry.npmjs.org/@scrypted/prebuild-install/-/prebuild-install-7.1.9.tgz",
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+         "license": "MIT",
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+            "node-abi": "^3.3.0",
+            "pump": "^3.0.0",
+            "rc": "^1.2.7",
+            "tar-fs": "^2.0.0",
+            "tunnel-agent": "^0.6.0"
+         },
+         "bin": {
+            "prebuild-install": "bin.js"
+         },
+         "engines": {
+            "node": ">=10"
+         }
+      },
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+         "dev": true,
+         "license": "MIT",
+         "dependencies": {
+            "end-of-stream": "^1.1.0",
+            "once": "^1.3.1"
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+         "dev": true,
+         "license": "(BSD-2-Clause OR MIT OR Apache-2.0)",
+         "dependencies": {
+            "deep-extend": "^0.6.0",
+            "ini": "~1.3.0",
+            "minimist": "^1.2.0",
+            "strip-json-comments": "~2.0.1"
+         },
+         "bin": {
+            "rc": "cli.js"
+         }
+      },
+      "node_modules/readable-stream": {
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+         "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.6.2.tgz",
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+         "dev": true,
+         "license": "MIT",
+         "dependencies": {
+            "inherits": "^2.0.3",
+            "string_decoder": "^1.1.1",
+            "util-deprecate": "^1.0.1"
+         },
+         "engines": {
+            "node": ">= 6"
+         }
+      },
+      "node_modules/safe-buffer": {
+         "version": "5.2.1",
+         "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.1.tgz",
+         "integrity": "sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ==",
+         "dev": true,
+         "funding": [
+            {
+               "type": "github",
+               "url": "https://github.com/sponsors/feross"
+            },
+            {
+               "type": "patreon",
+               "url": "https://www.patreon.com/feross"
+            },
+            {
+               "type": "consulting",
+               "url": "https://feross.org/support"
+            }
+         ],
+         "license": "MIT"
+      },
       "node_modules/semver": {
          "version": "7.7.1",
          "resolved": "https://registry.npmjs.org/semver/-/semver-7.7.1.tgz",
@@ -119,15 +503,133 @@
             "node": ">=10"
          }
       },
+      "node_modules/string_decoder": {
+         "version": "1.3.0",
+         "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.3.0.tgz",
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+         "dev": true,
+         "license": "MIT",
+         "dependencies": {
+            "safe-buffer": "~5.2.0"
+         }
+      },
+      "node_modules/strip-json-comments": {
+         "version": "2.0.1",
+         "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-2.0.1.tgz",
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+         "dev": true,
+         "license": "MIT",
+         "engines": {
+            "node": ">=0.10.0"
+         }
+      },
+      "node_modules/tar": {
+         "version": "7.4.3",
+         "resolved": "https://registry.npmjs.org/tar/-/tar-7.4.3.tgz",
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+         "license": "ISC",
+         "dependencies": {
+            "@isaacs/fs-minipass": "^4.0.0",
+            "chownr": "^3.0.0",
+            "minipass": "^7.1.2",
+            "minizlib": "^3.0.1",
+            "mkdirp": "^3.0.1",
+            "yallist": "^5.0.0"
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+         "engines": {
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+         "resolved": "https://registry.npmjs.org/tar-stream/-/tar-stream-2.2.0.tgz",
+         "integrity": "sha512-ujeqbceABgwMZxEJnk2HDY2DlnUZ+9oEcb1KzTVfYHio0UE6dG71n60d8D2I4qNvleWrrXpmjpt7vZeF1LnMZQ==",
+         "dev": true,
+         "requires": {
+            "bl": "^4.0.3",
+            "end-of-stream": "^1.4.1",
+            "fs-constants": "^1.0.0",
+            "inherits": "^2.0.3",
+            "readable-stream": "^3.1.1"
+         }
+      },
+      "tunnel-agent": {
+         "version": "0.6.0",
+         "resolved": "https://registry.npmjs.org/tunnel-agent/-/tunnel-agent-0.6.0.tgz",
+         "integrity": "sha512-McnNiV1l8RYeY8tBgEpuodCC1mLUdbSN+CYBL7kJsJNInOP8UjDDEwdk6Mw60vdLLrr5NHKZhMAOSrR2NZuQ+w==",
+         "dev": true,
+         "requires": {
+            "safe-buffer": "^5.0.1"
+         }
+      },
       "undici-types": {
          "version": "6.20.0",
          "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-6.20.0.tgz",
          "integrity": "sha512-Ny6QZ2Nju20vw1SRHe3d9jVu6gJ+4e3+MMpqu7pqE5HT6WsTSlce++GQmK5UXS8mzV8DSYHrQH+Xrf2jVcuKNg==",
          "dev": true
+      },
+      "util-deprecate": {
+         "version": "1.0.2",
+         "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
+         "integrity": "sha512-EPD5q1uXyFxJpCrLnCc1nHnq3gOa6DZBocAIiI2TaSCA7VCJ1UJDMagCzIkXNsUYfD1daK//LTEQ8xiIbrHtcw==",
+         "dev": true
+      },
+      "wrappy": {
+         "version": "1.0.2",
+         "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+         "integrity": "sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ==",
+         "dev": true
+      },
+      "yallist": {
+         "version": "5.0.0",
+         "resolved": "https://registry.npmjs.org/yallist/-/yallist-5.0.0.tgz",
+         "integrity": "sha512-YgvUTfwqyc7UXVMrB+SImsVYSmTS8X/tSrtdNZMImM+n7+QTriRXyXim0mBrTXNeqzVF0KWGgHPeiyViFFrNDw=="
       }
    }
 }

plugins/prebuffer-mixin/package.json

@@ -1,6 +1,6 @@
 {
    "name": "@scrypted/prebuffer-mixin",
-   "version": "0.10.57",
+   "version": "0.10.58",
    "description": "Video Stream Rebroadcast, Prebuffer, and Management Plugin for Scrypted.",
    "author": "Scrypted",
    "license": "Apache-2.0",
@@ -38,12 +38,14 @@
    },
    "dependencies": {
       "@scrypted/common": "file:../../common",
+      "@scrypted/libav": "^1.0.199",
       "@scrypted/sdk": "file:../../sdk",
       "h264-sps-parser": "^0.2.1",
       "semver": "^7.3.7"
    },
    "devDependencies": {
       "@types/node": "^22.13.14",
-      "@types/semver": "^7.3.12"
+      "@types/semver": "^7.3.12",
+      "prebuild-install": "npm:@scrypted/prebuild-install@^7.1.9"
    }
 }

plugins/prebuffer-mixin/src/libav-parser.ts

@@ -0,0 +1,206 @@
+import { Deferred } from "@scrypted/common/src/deferred";
+import { parseSdp } from "@scrypted/common/src/sdp-utils";
+import { sleep } from "@scrypted/common/src/sleep";
+import { StreamChunk } from "@scrypted/common/src/stream-parser";
+import { AVFormatContext, createAVFormatContext } from '@scrypted/libav';
+import { ResponseMediaStreamOptions } from "@scrypted/sdk";
+import { once } from 'events';
+import net from 'net';
+import { EventEmitter } from "stream";
+import tls from 'tls';
+import { RTSP_FRAME_MAGIC } from "../../../common/src/rtsp-server";
+import { ParserSession, setupActivityTimer } from "./ffmpeg-session";
+import { installLibavAddon } from "./libav-setup";
+import { negotiateMediaStream } from "./rfc4571";
+
+let installPromise: Promise<void>;
+
+export async function startLibavSession(console: Console, url: string, mediaStreamOptions: ResponseMediaStreamOptions, options: {
+    useUdp: boolean,
+    audioSoftMuted: boolean,
+    activityTimeout: number,
+}): Promise<ParserSession<"rtsp">> {
+    installPromise ||= installLibavAddon();
+    await installPromise;
+
+    const formatContext = createAVFormatContext();
+    try {
+        return await startLibavSessionWrapped(formatContext, console, url, mediaStreamOptions, options);
+    }
+    catch (e) {
+        await formatContext.close();
+        throw e;
+    }
+}
+
+export async function startLibavSessionWrapped(formatContext: AVFormatContext, console: Console, url: string, mediaStreamOptions: ResponseMediaStreamOptions, options: {
+    useUdp: boolean,
+    audioSoftMuted: boolean,
+    activityTimeout: number,
+}): Promise<ParserSession<"rtsp">> {
+    const events = new EventEmitter();
+
+    let tlsProxy: net.Server;
+    try {
+        if (url.startsWith('rtsps:') || url.startsWith('https:')) {
+            let { hostname, port } = new URL(url);
+            if (!port) {
+                if (url.startsWith('rtsps:'))
+                    port = '322';
+                else
+                    port = '443';
+            }
+
+            const portNumber = parseInt(port);
+            if (!portNumber)
+                throw new Error('invalid port number');
+
+            tlsProxy = net.createServer(async socket => {
+                try {
+                    const tlsSocket = tls.connect({
+                        host: hostname,
+                        port: portNumber,
+                        rejectUnauthorized: false,
+                    });
+                    await once(tlsSocket, 'secureConnect');
+                    socket.pipe(tlsSocket).pipe(socket);
+                }
+                catch (e) {
+                    console.error('tls proxy error', e);
+                    socket.destroy();
+                }
+            });
+
+            tlsProxy.listen(0, '127.0.0.1');
+            await once(tlsProxy, 'listening');
+            const localPort = (tlsProxy.address() as net.AddressInfo).port;
+            // rewrite the url to use the local port
+            const u = new URL(url);
+            u.protocol = u.protocol.replace('s:', ':');
+            u.hostname = '127.0.0.1';
+            u.port = localPort.toString();
+            url = u.toString();
+        }
+
+        await formatContext.open(url, {
+            rtsp_transport: options.useUdp ? 'udp' : 'tcp',
+        });
+    }
+    catch (e) {
+        tlsProxy?.close();
+        throw e;
+    }
+
+    let sdp = formatContext.createSDP();
+    const parsedSdp = parseSdp(sdp);
+    // sdp may contain multiple audio/video sections. take only the first video section.
+    sdp = [...parsedSdp.header.lines, ...parsedSdp.msections.map(msection => msection.lines).flat()].join('\r\n');
+
+    const killDeferred = new Deferred<void>();
+    const startDeferred = new Deferred<void>();
+    killDeferred.promise.catch(e => {
+        events.emit('killed');
+        events.emit('error', e);
+        tlsProxy?.close();
+    });
+
+    const kill = (e?: Error) => {
+        killDeferred.reject(e || new Error('killed'));
+        startDeferred.reject(e || new Error('killed'));
+    }
+
+    const { resetActivityTimer } = setupActivityTimer('rtsp', kill, events, options?.activityTimeout);
+
+    (async () => {
+        const pipelines: {
+            streamIndex: number,
+            writeFormatContext: AVFormatContext,
+        }[] = [];
+
+        try {
+            await startDeferred.promise;
+            formatContext.streams.forEach(stream => {
+                if (options.audioSoftMuted && stream.type === 'audio')
+                    return;
+                if (stream.type !== 'video' && stream.type !== 'audio')
+                    return;
+
+                const { codec } = stream;
+                const rtp = createAVFormatContext();
+                rtp.create('rtp', rtp => {
+                    const prefix = Buffer.alloc(4);
+                    prefix.writeUInt8(RTSP_FRAME_MAGIC, 0);
+                    prefix.writeUInt8(stream.index, 1);
+                    prefix.writeUInt16BE(rtp.length, 2);
+
+                    const chunk: StreamChunk = {
+                        chunks: [prefix, rtp],
+                        type: codec === 'hevc' ? 'h265' : codec,
+                    };
+
+                    events.emit('rtsp', chunk);
+                });
+                rtp.newStream({
+                    formatContext,
+                    streamIndex: stream.index,
+                });
+
+                pipelines.push({
+                    streamIndex: stream.index,
+                    writeFormatContext: rtp,
+                });
+            });
+
+            while (!killDeferred.finished) {
+                using result = await formatContext.receiveFrame(pipelines);
+                if (result)
+                    resetActivityTimer();
+                if (killDeferred.finished)
+                    break;
+            }
+        }
+        catch (e) {
+            kill(e);
+        }
+        finally {
+            kill(new Error('rtsp read loop exited'));
+
+            await sleep(1000);
+            await Promise.allSettled(pipelines.map(pipeline => pipeline.writeFormatContext.close()));
+            await sleep(1000);
+            await formatContext.close();
+        }
+    })();
+
+    return {
+        start: () => {
+            startDeferred.resolve();
+        },
+        sdp: Promise.resolve(sdp),
+        get isActive() { return !killDeferred.finished },
+        kill(error?: Error) {
+            kill(error);
+        },
+        killed: killDeferred.promise,
+        resetActivityTimer,
+        negotiateMediaStream: (requestMediaStream, inputVideoCodec, inputAudioCodec) => {
+            return negotiateMediaStream(sdp, mediaStreamOptions, inputVideoCodec, inputAudioCodec, requestMediaStream);
+        },
+        emit(container: 'rtsp', chunk: StreamChunk) {
+            events.emit(container, chunk);
+            return this;
+        },
+        on(event: string, cb: any) {
+            events.on(event, cb);
+            return this;
+        },
+        once(event: any, cb: any) {
+            events.once(event, cb);
+            return this;
+        },
+        removeListener(event, cb) {
+            events.removeListener(event, cb);
+            return this;
+        }
+    }
+}

plugins/prebuffer-mixin/src/libav-setup.ts

@@ -0,0 +1,19 @@
+import * as libav from '@scrypted/libav';
+import path from 'path';
+
+function getAddonInstallPath() {
+    if (process.versions.electron)
+        process.env.npm_config_runtime = 'electron';
+    const binaryUrl = libav.getBinaryUrl();
+    const u = new URL(binaryUrl);
+    const withoutExtension = path.basename(u.pathname).replace(/\.tar.gz$/, '');
+    return path.join(process.env.SCRYPTED_PLUGIN_VOLUME, libav.version, withoutExtension);
+}
+
+export async function installLibavAddon(installOnly = false) {
+    const nr = installOnly
+        ? null
+        // @ts-expect-error
+        : __non_webpack_require__;
+    await libav.install(getAddonInstallPath(), nr);
+}

plugins/prebuffer-mixin/src/main.ts

@@ -14,8 +14,9 @@ import { parse as h264SpsParse } from "h264-sps-parser";
 import net, { AddressInfo } from 'net';
 import path from 'path';
 import { Duplex } from 'stream';
-import { ParserOptions, ParserSession, startParserSession } from './ffmpeg-rebroadcast';
+import { ParserOptions, ParserSession, startParserSession } from './ffmpeg-session';
 import { FileRtspServer } from './file-rtsp-server';
+import { startLibavSession } from './libav-parser';
 import { getUrlLocalAdresses } from './local-addresses';
 import { REBROADCAST_MIXIN_INTERFACE_TOKEN } from './rebroadcast-mixin-token';
 import { connectRFC4571Parser, startRFC4571Parser } from './rfc4571';
@@ -32,6 +33,8 @@ const SCRYPTED_PARSER_TCP = 'Scrypted (TCP)';
 const SCRYPTED_PARSER_UDP = 'Scrypted (UDP)';
 const FFMPEG_PARSER_TCP = 'FFmpeg (TCP)';
 const FFMPEG_PARSER_UDP = 'FFmpeg (UDP)';
+const LIBAV_PARSER_TCP = 'Scrypted libav (TCP)';
+const LIBAV_PARSER_UDP = 'Scrypted libav (UDP)';
 const STRING_DEFAULT = 'Default';
 
 interface PrebufferStreamChunk extends StreamChunk {
@@ -59,7 +62,6 @@ class PrebufferSession {
   rtspPrebuffer: PrebufferStreamChunk[] = []
   parsers: { [container: string]: StreamParser };
   sdp: Promise<string>;
-  usingScryptedParser = false;
   usingScryptedUdpParser = false;
 
   mixinDevice: VideoCamera;
@@ -236,6 +238,8 @@ class PrebufferSession {
         rtspParser = localStorage.getItem('defaultRtspParser');
       }
       switch (rtspParser) {
+        case LIBAV_PARSER_TCP:
+        case LIBAV_PARSER_UDP:
         case FFMPEG_PARSER_TCP:
         case FFMPEG_PARSER_UDP:
         case SCRYPTED_PARSER_TCP:
@@ -392,6 +396,8 @@ class PrebufferSession {
             SCRYPTED_PARSER_UDP,
             FFMPEG_PARSER_TCP,
             FFMPEG_PARSER_UDP,
+            LIBAV_PARSER_TCP,
+            LIBAV_PARSER_UDP,
           ],
         }
       );
@@ -542,12 +548,11 @@ class PrebufferSession {
     // before launching the parser session, clear out the last detected codec.
     // an erroneous cached codec could cause ffmpeg to fail to start.
     this.storage.removeItem(this.lastDetectedAudioCodecKey);
-    this.usingScryptedParser = false;
+    let usingScryptedParser = false;
-
     const h264Oddities = this.getLastH264Oddities();
 
     if (isRfc4571) {
-      this.usingScryptedParser = true;
+      usingScryptedParser = true;
       this.console.log('bypassing ffmpeg: using scrypted rfc4571 parser')
       const json = await mediaManager.convertMediaObjectToJSON<any>(mo, 'x-scrypted/x-rfc4571');
       let { url, sdp, mediaStreamOptions } = json;
@@ -566,21 +571,22 @@ class PrebufferSession {
       sessionMso = ffmpegInput.mediaStreamOptions || this.advertisedMediaStreamOptions;
 
       let { parser, isDefault } = this.getParser(sessionMso);
-      this.usingScryptedParser = parser === SCRYPTED_PARSER_TCP || parser === SCRYPTED_PARSER_UDP;
+      usingScryptedParser = parser === SCRYPTED_PARSER_TCP || parser === SCRYPTED_PARSER_UDP;
+      const usingLibavParser = parser === LIBAV_PARSER_TCP || parser === LIBAV_PARSER_UDP;
       this.usingScryptedUdpParser = parser === SCRYPTED_PARSER_UDP;
 
       // prefer ffmpeg if this is a prebuffered stream.
       if (isDefault
-        && this.usingScryptedParser
+        && usingScryptedParser
         && h264Oddities
         && !this.stopInactive
         && sessionMso.tool !== 'scrypted') {
         this.console.warn('H264 oddities were detected in prebuffered video stream, the Default Scrypted RTSP Parser will not be used. Falling back to FFmpeg. This can be overriden by setting the RTSP Parser to Scrypted.');
-        this.usingScryptedParser = false;
+        usingScryptedParser = false;
         parser = FFMPEG_PARSER_TCP;
       }
 
-      if (this.usingScryptedParser) {
+      if (usingScryptedParser) {
         const rtspParser = createRtspParser();
         rbo.parsers.rtsp = rtspParser;
 
@@ -590,6 +596,16 @@ class PrebufferSession {
           rtspRequestTimeout: 10000,
         });
       }
+      else if (usingLibavParser) {
+        const rtspParser = createRtspParser();
+        rbo.parsers.rtsp = rtspParser;
+
+        session = await startLibavSession(this.console, ffmpegInput.url, ffmpegInput.mediaStreamOptions, {
+          useUdp: parser === LIBAV_PARSER_UDP,
+          audioSoftMuted,
+          activityTimeout: 10000,
+        });
+      }
       else {
         let acodec: string[];
 
@@ -646,7 +662,7 @@ class PrebufferSession {
         console.error('rebroadcast error', e)
     });
 
-    if (this.usingScryptedParser && !isRfc4571) {
+    if (usingScryptedParser && !isRfc4571) {
       // watch the stream for 10 seconds to see if an weird nalu is encountered.
       // if one is found and using scrypted parser as default, will need to restart rebroadcast to prevent
       // downstream issues.
@@ -1006,10 +1022,6 @@ class PrebufferSession {
     const codecInfo = await this.parseCodecs(true);
     const mediaStreamOptions: ResponseMediaStreamOptions = session.negotiateMediaStream(options, codecInfo.inputVideoCodec, codecInfo.inputAudioCodec);
     let sdp = await this.sdp;
-    if (!mediaStreamOptions.video?.h264Info && this.usingScryptedParser) {
-      mediaStreamOptions.video ||= {};
-      mediaStreamOptions.video.h264Info = this.getLastH264Probe();
-    }
 
     if (this.mixin.streamSettings.storageSettings.values.noAudio)
       mediaStreamOptions.audio = null;
@@ -1623,6 +1635,8 @@ export class RebroadcastPlugin extends AutoenableMixinProvider implements MixinP
         SCRYPTED_PARSER_UDP,
         FFMPEG_PARSER_TCP,
         FFMPEG_PARSER_UDP,
+        LIBAV_PARSER_TCP,
+        LIBAV_PARSER_UDP,
       ],
       onPut: () => {
         this.log.a('Rebroadcast Plugin will restart momentarily.');
@@ -1755,7 +1769,9 @@ export class RebroadcastPlugin extends AutoenableMixinProvider implements MixinP
     this.setHasEnabledMixin(mixinDeviceState.id);
 
     const { id } = mixinDeviceState;
-    const forked = sdk.fork<RebroadcastPluginFork>();
+    const forked = sdk.fork<RebroadcastPluginFork>({
+      runtime: 'node',
+    });
     const { worker } = forked;
     const result = await forked.result;
     const mixin = await result.newPrebufferMixin(mixinDevice, mixinDeviceInterfaces, mixinDeviceState);

plugins/prebuffer-mixin/src/rfc4571.ts

@@ -7,7 +7,7 @@ import { MediaStreamOptions, ResponseMediaStreamOptions } from "@scrypted/sdk";
 import { parse as spsParse } from "h264-sps-parser";
 import net from 'net';
 import { EventEmitter, Readable } from "stream";
-import { ParserSession, setupActivityTimer } from "./ffmpeg-rebroadcast";
+import { ParserSession, setupActivityTimer } from "./ffmpeg-session";
 import { getSpsResolution } from "./sps-resolution";
 
 export function negotiateMediaStream(sdp: string, mediaStreamOptions: MediaStreamOptions, inputVideoCodec: string, inputAudioCodec: string, requestMediaStream: MediaStreamOptions) {

plugins/prebuffer-mixin/src/rtsp-session.ts

@@ -5,7 +5,7 @@ import { StreamChunk } from "@scrypted/common/src/stream-parser";
 import { ResponseMediaStreamOptions } from "@scrypted/sdk";
 import dgram from 'dgram';
 import { EventEmitter } from "stream";
-import { ParserSession, setupActivityTimer } from "./ffmpeg-rebroadcast";
+import { ParserSession, setupActivityTimer } from "./ffmpeg-session";
 import { negotiateMediaStream } from "./rfc4571";
 
 export type RtspChannelCodecMapping = { [key: number]: string };