WebM → MP4

Convert a WebM video to MP4.

Input fileDrop your file hereor click to choose a fileSupported formats: WEBM

input.webm

Selected file

Ready

Output file

FFmpeg command

ffmpeg -i 'input.webm' -c:v libx264 -c:a aac -movflags +faststart 'output.mp4'

This command converts the WebM video to MP4 using H.264 video and AAC audio for broad compatibility.

-i

Specifies the input WebM video file.

-c:v libx264

Encodes the video using H.264, which is widely supported by devices and media players.

-c:a aac

Encodes the audio using AAC.

-movflags +faststart

Moves MP4 metadata to the beginning of the file so playback can start sooner when streaming.