Mp4: 601

For advanced users, FFmpeg can force the color tags during conversion: ffmpeg -i input.mov -vf "colorspace=all=bt601-6-625:itype=interlaced" -c:v libx264 -pix_fmt yuv420p output.mp4 2. File Naming: "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. 601 mp4

If you are trying to a file titled "601.mp4" and it won't play: For advanced users, FFmpeg can force the color

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). For advanced users