fix(server): selectively apply metadata bitstream filter for video thumbnails (#28162)

server/src/services/media.service.spec.ts

@@ -647,7 +647,7 @@ describe(MediaService.name, () => {
         expect.any(String),
         expect.objectContaining({
           inputOptions: expect.arrayContaining([
-            '-bsf:v',
+            '-bsf:0',
             'hevc_metadata=colour_primaries=1:matrix_coefficients=1:transfer_characteristics=1',
           ]),
           outputOptions: expect.any(Array),

server/src/utils/media.ts

@@ -423,7 +423,7 @@ export class ThumbnailConfig extends BaseConfig {
 
     if (metadataOverrides.length > 0) {
       // workaround for https://fftrac-bg.ffmpeg.org/ticket/11020
-      options.push('-bsf:v', `${videoStream.codecName}_metadata=${metadataOverrides.join(':')}`);
+      options.push(`-bsf:${videoStream.index}`, `${videoStream.codecName}_metadata=${metadataOverrides.join(':')}`);
     }
 
     return options;