pipeline rearch

server/src/ffmpeg/builder/constants.ts

@@ -82,6 +82,7 @@ export const OutputFormatTypes = {
   HlsDirectV2: 'hls_direct_v2',
   Nut: 'nut',
   Dash: 'dash',
+  Null: 'null',
 } as const;
 
 export const ColorRanges = {
@@ -195,14 +196,23 @@ export function MpegDashOutputFormat(
   };
 }
 
+export const NullOutputFormat = {
+  type: OutputFormatTypes.Null,
+} as const satisfies NullOutputFormat;
+
+export type NullOutputFormat = {
+  type: typeof OutputFormatTypes.Null;
+};
+
 export type OutputFormat =
   | HlsOutputFormat
   | HlsDirectOutputFormat
   | NutOutputFormat
   | MkvOutputFormat
   | MpegDashOutputFormat
   | Mp4OutputFormat
-  | MpegTsOutputFormat;
+  | MpegTsOutputFormat
+  | NullOutputFormat;
 
 export const OneDayMillis = 7 * 24 * 60 * 60 * 1000;
 export const FiveMinutesMillis = 5 * 60 * 60 * 1000;

server/src/ffmpeg/builder/options/NullOutputFormat.ts

@@ -0,0 +1,7 @@
+import { OutputOption } from './OutputOption.ts';
+
+export class NullOutputFormat extends OutputOption {
+  options(): string[] {
+    return ['-f', 'null'];
+  }
+}

server/src/ffmpeg/builder/pipeline/BasePipelineBuilder.ts

@@ -97,6 +97,7 @@ import {
   StandardFormatFlags,
   ThreadCountOption,
 } from '../options/GlobalOption.ts';
+import { NullOutputFormat } from '../options/NullOutputFormat.ts';
 import {
   ClosedGopOutputOption,
   DoNotMapMetadataOutputOption,
@@ -868,6 +869,8 @@ export abstract class BasePipelineBuilder implements PipelineBuilder {
       }
       case OutputFormatTypes.Dash:
         throw new Error('MPEG-DASH streaming is not yet implemented');
+      case OutputFormatTypes.Null:
+        this.pipelineSteps.push(new NullOutputFormat());
     }
 
     if (