Added Seek Support

play-dl/YouTube/stream.ts

@@ -1,4 +1,5 @@
 import { LiveStream, Stream } from './classes/LiveStream';
+import { SeekStream } from './classes/SeekStream';
 import { InfoData, StreamInfoData } from './utils/constants';
 import { video_stream_info } from './utils/extractor';
 
@@ -11,6 +12,7 @@ export enum StreamType {
 }
 
 export interface StreamOptions {
+    seek? : number
     quality?: number;
     htmldata?: boolean;
 }
@@ -35,7 +37,7 @@ export function parseAudioFormats(formats: any[]) {
 /**
  * Type for YouTube Stream
  */
-export type YouTubeStream = Stream | LiveStream;
+export type YouTubeStream = Stream | LiveStream | SeekStream;
 /**
  * Stream command for YouTube
  * @param url YouTube URL
@@ -77,7 +79,19 @@ export async function stream_from_info(
     else final.push(info.format[info.format.length - 1]);
     let type: StreamType =
         final[0].codec === 'opus' && final[0].container === 'webm' ? StreamType.WebmOpus : StreamType.Arbitrary;
-    return new Stream(
+    if(options.seek){
+        if(type === StreamType.WebmOpus) {
+            return new SeekStream(
+                final[0].url,
+                info.video_details.durationInSec,
+                Number(final[0].contentLength),
+                info.video_details.url,
+                options
+            )
+        }
+        else throw new Error("Seek is only supported in Webm Opus Files.")
+    }
+    else return new Stream(
         final[0].url,
         type,
         info.video_details.durationInSec,