Free Video to MP4 Converter - Convert Any Video Online

A While our tool primarily changes the video's container and codec to MP4, preserving the original resolution, converting to MP4 can often result in a smaller file size compared to formats like AVI or WebM due to MP4's superior compression efficiency. This can be beneficial for meeting social media upload limits, allowing you to share your videos more easily without significant quality loss.

A We don't impose a strict file size limit for uploads; you can convert most standard video files. However, extremely large files, like those over 4GB, might take longer to process. For the best experience, we recommend uploading files under 2GB. You'll see the progress bar fill up as your video converts.

A DRM-protected files from services like Netflix or iTunes won't work. Our tool processes the video on our servers, and DRM encryption blocks that process entirely. You'll get an error message if you try. This isn't a limitation we can bypass legally. For your own recordings or downloaded files without DRM, everything works fine. Stick to unprotected content you own.

A No, wait until the file is fully downloaded or uploaded before starting conversion. Partial files cause errors or produce corrupted MP4s that won't play. For example, a 500MB MKV that's only 60% uploaded will fail. Let the progress bar hit 100% first, then hit convert. This saves you from wasting time on a broken output.

A Your files get encrypted during upload and deleted from our servers within 24 hours after conversion. That said, if you're working with confidential client videos or unreleased content, don't upload them to any online tool. A local converter is safer for that. For everyday stuff like vacation clips or training videos for your team, this is perfectly fine.

A It runs in any modern browser on iOS, Android, or desktop. I've tested it on Safari, Chrome, and Firefox mobile with files up to 1GB. The upload button works fine on a phone screen. Just tap the file picker, select your video, and let the server do the heavy lifting. No app download required. One tip: keep your phone screen on during conversion, or the upload might pause.

A We don't touch your original file at all. It stays on your device exactly as you uploaded it. The tool creates a fresh MP4 copy on our servers, then sends that copy to your downloads folder. Nothing gets replaced or deleted automatically. Want proof? Check your original file's timestamp after a conversion. It won't change. Just remember to clean up your downloads folder later.

A That's usually a color space mismatch. Some formats like MOV or MKV use different color matrices than MP4's standard. Our tool preserves the original video data, but your playback software might interpret the colors wrong. Try switching from H.264 to H.265 encoding on the settings screen. If it still looks off, download VLC Media Player. VLC ignores color tags and plays the raw stream correctly.

A Only the first video and audio stream survive the conversion. If your MKV has three audio languages and two subtitle tracks, you'll get one audio stream and zero subtitles in the MP4. Need subtitles? Hard-code them into the video first with a desktop editor, then convert. That's a two-step process, but MP4 containers don't natively support soft subtitles like MKV does.

A Only if the original uses a codec MP4 can't handle natively. AVI and MKV often pack DivX or Xvid video, and those get re-encoded to H.264. That re-encode introduces some generational loss, usually around 5-10% sharpness drop on detailed scenes. But if your file already uses H.264 or H.265, like most MOV files do, we copy the stream without touching a single pixel. No re-encoding means zero quality loss. Check your source codec on your computer first with MediaInfo before you upload. That tells you exactly what'll happen.