Free Video to MP4 Converter - Convert Any Video Online

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.

A Drag multiple files onto the upload screen at once; the tool queues them automatically. You'll get individual download links for each MP4 once processing finishes, typically 2-3 minutes per 1GB of source footage. The queue handles five files reliably, though pushing ten at once can slow things down on free plans. For teachers prepping a week of lesson clips, this saves serious time. One tip: name your files clearly before uploading, because the output keeps your original filenames.

A That happens when the source uses a high bitrate codec that our encoder preserves by default. A 4K AVI at 80 Mbps can balloon to a 700MB MP4 in a few minutes. Open the settings gear before converting and drop the bitrate slider to around 12 Mbps for 1080p footage. You'll barely notice the difference on a phone screen. For YouTube uploads, 20 Mbps is plenty. If you're making archive copies, keep the default and buy more storage.

A Your 60fps game capture or software demo will drop to 30fps if you leave the default settings unchanged. Open the advanced panel before hitting upload and manually force the output frame rate to match your source file. We process high-resolution streams efficiently, but mismatching playback speeds causes stuttering on standard media players. Try testing a short thirty-second clip first to verify motion smoothness.

A Network bandwidth only matters for the upload and download phases. The actual conversion speed depends entirely on our server CPU clusters crunching your specific codec. A 2GB MOV file might upload in two minutes on a fiber connection, but transcoding complex H.265 footage takes another minute on the backend. If your progress bar stalls around 99%, the server is finalizing the MP4 container structure. Don't close the tab during this step, or you'll corrupt the final file. Grab a coffee while the hardware finishes the heavy lifting.