Run a quick scan with your security software if the file was downloaded from an unknown source. To give you a better guide, could you tell me:
Verify that the file size is large (e.g., hundreds of MBs or GBs) and not just a few KBs.
(e.g., Windows PC, Mac, iPhone, Android, TV) make up artist.mkv.mp4
If it is just a naming error, you can rename the file by removing .mkv from the end, leaving only .mp4 . 2. How to Convert/Fix the File
If simply renaming doesn't work, the file structure might be damaged. Download and open Handbrake . Drag and drop your file into Handbrake. Select a preset (e.g., "Fast 1080p30"). Set the format to MP4 . Run a quick scan with your security software
Based on the file extension, this is likely a that has been mistakenly renamed with double extensions ( .mkv and .mp4 ), or it is an MKV container holding MP4-compatible video. 1. How to Watch the File You likely do not need to convert the file to watch it.
Click to create a playable, standardized MP4 file. 3. Safety Warning Drag and drop your file into Handbrake
Download and install VLC Media Player . It is a free, open-source player that can play almost any file format, including misnamed .mkv.mp4 files.