What the converted MP4 contains
The output uses H.264 video, AAC audio, and the yuv420p pixel format. This combination is commonly supported by browsers, phones, televisions, presentation software, and desktop media players.
Convert video to MP4
Upload a video and convert it to a widely compatible MP4 file.
MP4
Your converted file will appear here.
Video to MP4 converter
MP4 is a practical output when you need a video that works across browsers, phones, and common editing tools.
- Convert MOV, AVI, MKV, MPEG, WebM, and other videos to MP4.
- Create an MP4 file that works across phones, browsers, editors, and players.
- Preview the converted MP4 online and download it when it is ready.
Why conversion can fix playback problems
MOV, AVI, MKV, WebM, and other containers can hold codecs that a particular device does not understand. This converter decodes the source and creates a new H.264/AAC MP4 instead of merely changing the filename.
Web playback and fast start
The MP4 is written with its playback metadata near the beginning of the file. Compatible web players can use this fast-start layout to begin playback without first reading the entire file.
Quality expectations
Video-to-video conversion requires re-encoding, so the result is not a lossless copy. Visual quality and file size can differ from the upload, and conversion cannot restore detail missing from the source.
Frequently asked questions
Which codecs does the output MP4 use?
The converted file uses H.264 video, AAC audio, and the yuv420p pixel format.
Is converting the same as renaming the file?
No. Renaming changes only the filename. Conversion decodes the source and creates a new MP4 container with compatible video and audio codecs.
Can I convert video to MP4 online?
Yes. Upload a video file, choose MP4 as the output format, and download the converted file when processing finishes.
Which video files are supported?
Common video uploads such as MP4, MOV, WebM, AVI, MKV, and MPEG are supported.
What happens to my uploaded file?
The converter processes the upload on the server. Temporary input and output files are deleted after the conversion request finishes.