Convert a Video File to MP4
Upload a video and download it as an MP4. MP4 is the format phones, browsers, social apps and most video editors open without a plugin, so it fixes the usual problem: a MOV from an iPhone that will not play on Windows, an MKV that a TV rejects, or an old AVI or WMV that an editor will not import.
The video also stays in your ScreenApp library with a transcript, so you can search what was said in it or ask the AI a question about it.
What you get:
- An MP4 of your video, downloaded with the Download button on the file
- Video uploads in MP4, M4V, MOV, AVI, WEBM, MKV, FLV, TS, MTS, M2TS, 3GP, 3GPP, 3G2, WMV, ASF, VOB, OGV, RM, RMVB, MPG, MPEG, M2V, F4V, MXF
- Files up to 2 GB in the free online tool on this page, and no set file size limit in the app
- A transcript in 100+ languages, exportable as PDF, DOCX, TXT, SRT and VTT
- AI chat with any recording, so you can check what is in a long video without watching it
- A file with no watermark on any recording or export
How to Convert a Video to MP4
- Upload the video: drop the file on the tool above, or pick it from your computer or phone. Sign in with a free account to save it.
- Let it process: ScreenApp stores the video and transcribes the audio. Both are in your library when processing finishes.
- Download the MP4: open the file and press Download. Downloads are available on paid plans, starting at $19 a month billed annually.
Changing the format does not add detail. A low-resolution or shaky recording stays that way as an MP4. This tool has no resolution, codec or bitrate setting, so if you need to control those, a converter with advanced video settings fits the job better. Transcript quality depends on the audio, so see how we measure accuracy.
If the video is on YouTube, Vimeo or another site rather than saved on your device, paste the link in the tool’s link tab instead. Link to MP4 explains how link imports work.
For one specific format, the single-format pages cover the same job: MOV to MP4, MKV to MP4 and AVI to MP4.
MP4 Converter vs Other Tools
| Feature | ScreenApp | CloudConvert | FreeConvert | HappyScribe |
|---|---|---|---|---|
| Max file size, free | 2 GB (free online tool) | 1 GB | 1 GB | Not stated |
| Free allowance | 3 uploads, lifetime | 10 conversions a day | Not stated beyond the file size cap | Not stated |
| MP4 download on the free plan | No, Paid plans only | Yes | Yes | Yes |
| Codec and resolution settings | No | Resolution, quality and file size options | Yes, H.264 or H.265 | Not stated |
| Transcript of the video | Yes | Not stated | Not stated | Not stated |
Sources, checked 2026-09-12: ScreenApp pricing, cloudconvert.com/pricing, freeconvert.com/mp4-converter, screenapp.io/help/free-account-download-limits
- vs CloudConvert: CloudConvert’s free tier allows 10 conversions a day on files up to 1 GB, with options for resolution and quality. Pick it when you need the MP4 file and want to set those yourself.
- vs FreeConvert: FreeConvert’s MP4 converter takes free files up to 1 GB, lets you choose H.264 or H.265, and deletes uploads after 8 hours. ScreenApp keeps the video in your library with a transcript and AI chat, and the MP4 download is on paid plans.
- vs HappyScribe: HappyScribe’s MP4 converter says it takes over 47 formats with no sign-up. ScreenApp needs a free account and adds the transcript to the same upload.
Who Converts Videos to MP4
iPhone and Mac users convert MOV recordings to MP4 so they play on Windows computers, Android phones and older TVs.
Content creators convert footage to MP4 before uploading to YouTube, Instagram or TikTok, and use the transcript to write captions and descriptions.
Video editors turn MKV, WebM or AVI files into MP4 so they import into Premiere Pro, Final Cut Pro or DaVinci Resolve without a format error.
Teachers and trainers convert screen recordings and lesson videos to MP4 so they upload to a learning platform, and keep a transcript for students who prefer to read.
People sorting old videos convert WMV, 3GP and MPG files from old cameras and phones to MP4 so they play on current devices.
