Function prepareBackupMetadataVideoForUpload

prepareBackupMetadataVideoForUpload(
    input: {
        source: Readable;
        expectedContentLength: number;
        sourceContentType?: string;
        metadata: BackupInjectedMetadata;
        signal?: AbortSignal;
    },
): Promise<PreparedBackupMetadataVideo>
Stages the source stream to a short-lived temp file, runs ffmpeg with seekable input to write a metadata-injected MP4 or MOV (+faststart, -codec copy), then returns the output file as a web ReadableStream for backup upload. MP4/MOV sources usually place moov at the end of the file, so piping into ffmpeg stdin cannot demux the full media; a seekable temp copy is required for reliable metadata injection without re-encoding.
Parameters
- input: {
      source: Readable;
      expectedContentLength: number;
      sourceContentType?: string;
      metadata: BackupInjectedMetadata;
      signal?: AbortSignal;
  }
  Node readable source, expected byte length, source MIME type, metadata fields, and optional abort signal.
Returns Promise<PreparedBackupMetadataVideo>
Upload stream, content length, preserved container MIME type, and PreparedBackupMetadataVideo.dispose.
- Defined in lib/backup-metadata.ts:384