Mux Transfer

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Environment Variables\nconst FILONE_ACCESS_KEY = Deno.env.get(\"FILONE_ACCESS_KEY\")?.trim();\nconst FILONE_SECRET_KEY = Deno.env.get(\"FILONE_SECRET_KEY\")?.trim();\nconst FILONE_ENDPOINT = (Deno.env.get(\"FILONE_ENDPOINT\") || \"https://us-east-1.s3.fil.one\").trim();\nconst BUCKET = (Deno.env.get(\"FILONE_BUCKET\") || \"deenstreamproduction\").trim();\n\nconst s3 = new S3Client({\n endpoint: FILONE_ENDPOINT,\n region: \"us-east-1\",\n credentials: {\n accessKeyId: FILONE_ACCESS_KEY || \"\",\n secretAccessKey: FILONE_SECRET_KEY || \"\",\n },\n forcePathStyle: true,\n});\n\n// 2. High-Speed Browser Headers\nconst BROWSER_HEADERS = {\n \"User-Agent\": \"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36\",\n \"Accept\": \"*/*\",\n \"Accept-Encoding\": \"gzip, deflate, br\",\n \"Accept-Language\": \"en-US,en;q=0.9,hi;q=0.8\",\n \"Referer\": \"https://stream.mux.com/\",\n \"Origin\": \"https://stream.mux.com\",\n};\n\n// 3. Worker Concurrency Runner\nasync function runWithConcurrency(items: T[], concurrency: number, fn: (item: T) => Promise) {\n let index = 0;\n const workers = Array.from({ length: Math.min(items.length, concurrency) }, async () => {\n while (index < items.length) {\n const currentIndex = index++;\n await fn(items[currentIndex]);\n }\n });\n await Promise.all(workers);\n}\n\n// 4. S3 Upload with Auto Retry\nasync function uploadToS3(key: string, body: Uint8Array, contentType: string) {\n for (let attempt = 1; attempt <= 3; attempt++) {\n try {\n await s3.send(\n new PutObjectCommand({\n Bucket: BUCKET,\n Key: key,\n Body: body,\n ContentType: contentType,\n })\n );\n return;\n } catch (err) {\n if (attempt === 3) throw err;\n await new Promise((r) => setTimeout(r, 200 * attempt));\n }\n }\n}\n\n// 5. Chunk Fetch with Fresh Signature Retry\nasync function fetchChunkWithRetry(url: string, manifestRefreshUrl?: string): Promise {\n let currentUrl = url;\n for (let attempt = 1; attempt <= 4; attempt++) {\n try {\n const res = await fetch(currentUrl, { headers: BROWSER_HEADERS });\n if (res.status === 403 || res.status === 401) {\n // Signature expired! Refresh manifest if available\n if (manifestRefreshUrl && attempt < 4) {\n const freshRes = await fetch(manifestRefreshUrl, { headers: BROWSER_HEADERS });\n if (freshRes.ok) {\n const freshText = await freshRes.text();\n // Find corresponding segment chunk name\n const segName = currentUrl.split(\"?\")[0].split(\"/\").pop();\n const matchingLine = freshText.split(\"\\n\").find((l) => l.includes(segName!));\n if (matchingLine) {\n currentUrl = matchingLine.trim();\n }\n }\n }\n await new Promise((r) => setTimeout(r, 300));\n continue;\n }\n\n if (!res.ok) throw new Error(`HTTP ${res.status}`);\n const buf = new Uint8Array(await res.arrayBuffer());\n if (buf.length > 200) return buf;\n } catch {\n if (attempt === 4) return null;\n await new Promise((r) => setTimeout(r, 300 * attempt));\n }\n }\n return null;\n}\n\nexport default async function (req: Request): Promise {\n const startTime = Date.now();\n try {\n if (!FILONE_ACCESS_KEY || !FILONE_SECRET_KEY) {\n return new Response(\n JSON.stringify({\n error: \"FILONE_ACCESS_KEY and FILONE_SECRET_KEY environment variables are missing in Val Town Settings.\",\n }),\n { status: 500, headers: { \"Content-Type\": \"application/json\" } }\n );\n }\n\n const url = new URL(req.url);\n let playbackId = url.searchParams.get(\"playbackId\") || url.searchParams.get(\"playback_id\");\n let videoId = url.searchParams.get(\"videoId\") || url.searchParams.get(\"video_id\") || `filone_${Date.now()}`;\n\n if (req.method === \"POST\") {\n try {\n const contentType = req.headers.get(\"content-type\") || \"\";\n if (contentType.includes(\"application/json\")) {\n const body = await req.json();\n playbackId = playbackId || body.playbackId || body.playback_id || (body.data?.playback_ids?.[0]?.id);\n videoId = body.videoId || body.video_id || videoId;\n } else if (contentType.includes(\"application/x-www-form-urlencoded\")) {\n const formData = await req.formData();\n playbackId = playbackId || (formData.get(\"playbackId\") as string);\n videoId = (formData.get(\"videoId\") as string) || videoId;\n }\n } catch {}\n }\n\n if (!playbackId) {\n return new Response(\n `\n \n Mux Transfer\n \n

⚡ Fast Mux Transfer (Fresh Token Engine)

\n \n

`,\n { status: 200, headers: { \"Content-Type\": \"text/html\" } }\n );\n }\n\n const folderPrefix = `transcoded_${videoId}_mux`;\n const masterUrl = `https://stream.mux.com/${playbackId}.m3u8`;\n\n console.log(`[🚀 Start Transfer] Mux Playback: ${playbackId}`);\n\n // Step 1: Master Playlist Fetch\n const masterRes = await fetch(masterUrl, { headers: BROWSER_HEADERS });\n if (!masterRes.ok) {\n return new Response(JSON.stringify({ error: `Invalid Mux Playback ID: ${masterRes.status}` }), { status: 400 });\n }\n const masterText = await masterRes.text();\n\n // Step 2: Separate Audio & Video Tracks\n const lines = masterText.split(\"\\n\").map((l) => l.trim());\n const tracksToProcess: { url: string; prefix: string; isAudio: boolean }[] = [];\n \n let audioCounter = 0;\n let videoCounter = 0;\n\n for (const l of lines) {\n if (l.startsWith(\"#EXT-X-MEDIA\") && l.includes(\"TYPE=AUDIO\") && l.includes('URI=\"')) {\n const match = l.match(/URI=\"([^\"]+)\"/);\n if (match) {\n tracksToProcess.push({\n url: match[1],\n prefix: `audio_${audioCounter}`,\n isAudio: true,\n });\n audioCounter++;\n }\n } else if (l.startsWith(\"https://\") || l.startsWith(\"http://\")) {\n tracksToProcess.push({\n url: l,\n prefix: `rendition_${videoCounter}`,\n isAudio: false,\n });\n videoCounter++;\n }\n }\n\n console.log(`Found ${audioCounter} Audio Track(s) and ${videoCounter} Video Rendition(s).`);\n\n // Step 3: Upload Master Playlist to S3\n const masterUploadPromise = uploadToS3(\n `${folderPrefix}/master.m3u8`,\n new TextEncoder().encode(masterText),\n \"application/x-mpegURL\"\n );\n\n // Step 4: Streamlined Rendition Processing with Fresh Live Manifests\n let totalChunksSaved = 0;\n let failedChunks = 0;\n\n const renditionTasks = tracksToProcess.map(async (track) => {\n // Fetch fresh live rendition manifest\n const rRes = await fetch(track.url, { headers: BROWSER_HEADERS });\n if (!rRes.ok) return;\n\n const rText = await rRes.text();\n const renditionPrefix = track.prefix;\n\n // Upload Rendition M3U8\n const manifestUpload = uploadToS3(\n `${folderPrefix}/${renditionPrefix}.m3u8`,\n new TextEncoder().encode(rText),\n \"application/x-mpegURL\"\n );\n\n // Parse fresh segments\n const rLines = rText.split(\"\\n\").map((l) => l.trim());\n const chunkItems: { url: string; s3Key: string; isMap: boolean; isAudio: boolean }[] = [];\n let segCount = 0;\n\n for (const line of rLines) {\n if (line.startsWith(\"#EXT-X-MAP:URI=\")) {\n const mapUrl = line.replace('#EXT-X-MAP:URI=\"', \"\").replace('\"', \"\");\n chunkItems.push({\n url: mapUrl,\n s3Key: `${folderPrefix}/map_${renditionPrefix}_0.m4s`,\n isMap: true,\n isAudio: track.isAudio,\n });\n } else if (line.startsWith(\"https://\") || line.startsWith(\"http://\")) {\n chunkItems.push({\n url: line,\n s3Key: `${folderPrefix}/chunk_${renditionPrefix}_${segCount}.m4s`,\n isMap: false,\n isAudio: track.isAudio,\n });\n segCount++;\n }\n }\n\n console.log(`[${renditionPrefix}] Transferring ${chunkItems.length} fresh segments...`);\n\n // Parallel download segments for this rendition while tokens are 100% active\n await Promise.all([\n manifestUpload,\n runWithConcurrency(chunkItems, 12, async (item) => {\n const data = await fetchChunkWithRetry(item.url, track.url);\n if (data) {\n await uploadToS3(item.s3Key, data, item.isMap ? \"video/mp4\" : item.isAudio ? \"video/mp4\" : \"video/iso.segment\");\n totalChunksSaved++;\n } else {\n console.error(`❌ Missed chunk: ${item.s3Key}`);\n failedChunks++;\n }\n }),\n ]);\n });\n\n await Promise.all([masterUploadPromise, ...renditionTasks]);\n\n const durationSec = ((Date.now() - 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