What each format is for
| Format | Use it for |
|---|---|
| MP4 (H.264 + AAC) | Uploading anywhere: TikTok, Instagram, YouTube, X, Discord, phones and editors. The safe default. |
| WebM (VP9 + Opus) | Websites and browsers; often smaller than MP4 at the same quality. |
| MOV | Apple editing apps such as Final Cut and iMovie. |
| MP3 | Audio from a video: a podcast clip, a voiceover, a song you recorded. |
| WAV | Uncompressed audio for editing in a DAW without any quality loss. |
Example: an iPhone MOV recorded in H.264 converts to MP4 almost instantly with "Original" quality, because the video doesn't need re-encoding; it's just moved into the new container. An OBS MKV recording becomes an uploadable MP4 the same way.
Converting without losing quality
With quality set to Original and no resizing, the tool copies the existing video and audio when the new format supports them. That's lossless and very fast. When it does need to re-encode, for a new resolution, a codec the format requires or a smaller file, it uses your browser's built-in encoder, usually hardware-accelerated. Trimming with "Original" may start at the nearest keyframe; choose High if you need a frame-exact start.
If your goal is a smaller file for a specific limit, the video compressor picks the bitrate for you. For a looping clip without sound, try the video to GIF maker.
Frequently asked questions
How do I convert MOV to MP4?
Drop the MOV file in, choose MP4 and press Convert. iPhone videos usually convert without re-encoding, so it takes seconds and keeps the original quality.
How do I get the audio from a video as an MP3?
Choose "MP3 audio only" and press Convert. You can set a start and end time to keep just part of it.
Is there a file size limit?
No upload means no upload limit. Very large files depend on your device's memory; a few gigabytes is fine on most computers.
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