: For a fast conversion without quality loss (if only changing the container), you can use the command line: ffmpeg -i input_file.mp4 -c copy output_file.mkv . Troubleshooting Playback

: A popular free tool for converting video. You can choose a "480p" preset and set the output container to MKV.

(typically 720x480 or 640x480) is standard-definition quality, often used to save storage space or for better compatibility with older devices. How to Get 480p MKV Files 1. Downloading Directly in MKV

: Import your video, click "Profile," choose the MKV format, and select the 480p resolution.

If you have already downloaded an MKV file but it won't play: