Are you trying to a video with specific color settings, or are you trying to repair/open a file that has "601" in the name?
In some technical or hobbyist circles, "601" is a serial identifier. 601 mp4
If you are a video editor, "601" usually refers to , the color standard for Standard Definition (SD) video. You might see this when converting old tapes or working with legacy DVD formats. Are you trying to a video with specific
Use this when your project is in 480i or 576i resolution. High Definition (HD) projects should use Rec. 709 instead. You might see this when converting old tapes
Sometimes files are corrupted during transfer. Try the FixVideo Online Tool or Restore.Media if the file was from a camera that cut out.
If you are using downloader scripts like yt-dlp , ensure you are on the latest version, as bugs often cause "unable to download" errors for long videos (common in 600+ MB files).
If you are remuxing files using the OBS Remux Tool, select "Partial" color range to maintain the Rec. 601 levels.