Video Formats MP4, MOV, AVI, WebM: What Can Be Cleaned Up

TrimTake accepts four formats: MP4, MOV, AVI and WebM. Almost every meeting app, phone and laptop recorder saves in one of these, so most recordings upload as they are. If yours is MKV, MTS or something less common, convert it to MP4 first and then upload.

One recording, before and after

Here is a typical case. A consultant records a nine-minute proposal walkthrough in OBS Studio on a Windows laptop. When they're done, the file in their Videos folder ends in .mkv. That is OBS's safe default, because an MKV file survives a crash halfway through a recording. It is not on the accepted list, though, so the upload screen won't take it.

What happened next: they opened OBS, chose File, then Remux Recordings, and pointed it at the MKV. A few moments later an MP4 sat beside the original. Remuxing only rewraps the same picture and sound in a new container, so nothing was re-encoded and nothing lost quality. They uploaded the MP4, checked the struck-through ums and long pauses in the transcript preview, and downloaded a clean file. The recording was the same and the speaker was the same. Only the file extension changed, and that one step was the whole difference between stuck and finished.

That's the pattern this guide covers. If you searched for video formats mp4 mov because a file wouldn't go where you wanted, the fix is usually small.

What your recorder actually produces

The table below lists the default output of the tools professionals use most. Defaults can change between app versions and settings, so check the extension on your own file before you assume anything.

| Recorder or device | Usual file type | Upload directly? | What to do otherwise | |---|---|---|---| | Zoom (local or cloud recording) | MP4 | Yes | Nothing, use the MP4 file, not the M4A audio file | | Microsoft Teams | MP4 | Yes | Download from the meeting chat or OneDrive | | Google Meet | MP4 | Yes | Download from Google Drive | | Webex | MP4 | Yes | Download the recording from your Webex account | | Loom (downloaded) | MP4 | Yes | Use the download option on the video page | | iPhone camera | MOV | Yes | Transfer the original file, not a compressed message copy | | Android phone camera | MP4 | Yes | Transfer by cable or cloud storage | | Mac QuickTime screen or camera recording | MOV | Yes | Nothing needed | | Browser-based recorders | Often WebM | Yes | Nothing needed | | Older webcams and legacy Windows software | Often AVI | Yes | Nothing needed | | OBS Studio | Often MKV, sometimes FLV | No | Remux to MP4 inside OBS | | Camcorders using AVCHD | MTS or M2TS | No | Convert to MP4 with a free converter | | Screen tools with their own project format | Proprietary project file | No | Export or share as MP4 from that tool |

Commentary: reading the table

MP4 is the safe default. Meeting platforms settled on MP4 years ago because it plays almost everywhere. If your recorder lets you choose, pick MP4 and you won't have to think about formats again. Zoom users can go straight to removing filler words from a Zoom recording without converting anything.

MOV is just as welcome. Apple devices save MOV by default, and plenty of people assume they need to convert it first. You don't. Upload the MOV as it is. The one thing to watch is how the file got off your phone. A video sent through a messaging app is often squeezed down to a smaller, softer copy. AirDrop, a cable, or a cloud photo library usually keeps the original, and the original gives the cleanest result.

WebM shows up more than people expect. Many recorders that run in a browser tab save WebM, because browsers create that format natively. If a web tool handed you a .webm file, it's ready to go.

AVI is the veteran. You'll mostly see it from older webcam software, archived training libraries, or a recording someone made years ago and just found again. AVI files can be large, but they're on the accepted list.

Anything else needs one extra step. MKV, FLV, MTS, M2TS and proprietary project files all fall here. The step is almost always quick.

How to convert a file that isn't accepted

You have three dependable routes, roughly in order of preference.

1. Use the recorder's own export. Most tools that save a project file also have an Export, Share or Download option that offers MP4. This keeps settings consistent and avoids a second program.
2. Remux instead of re-encode when you can. OBS Studio's Remux Recordings option rewraps MKV or FLV as MP4 without touching picture quality. It's quick because no new encoding happens.
3. Use a free converter for everything else. A desktop converter such as HandBrake can turn MTS, M2TS or odd formats into MP4. Choose a general-purpose MP4 preset and keep the resolution the same as the source. Shrinking the file isn't necessary for cleanup.

A small habit saves time later: change your recorder's default output to MP4 or MOV once, and every future recording skips this section entirely.

Things that matter more than the format

Once the file type is sorted, a few other factors decide how well the cleanup goes.

• Length. Pay Per Video covers a recording up to 10 minutes for $0.99. The free plan handles clips up to 90 seconds each, with about 10 minutes of footage a month and no card required. Longer or more frequent recordings fit the monthly plans on the pricing page.
• A clear speaking track. Filler and pause detection works from what is said, so a recording where your voice is easy to hear gives the best result. Background noise removal is available from the Creator plan up.
• One speaker talking to camera or screen. Talking-head recordings, walkthroughs and presentations are the sweet spot.

If you want to see each stage from upload to download, how it works walks through it.

Ready to try your file

Check the extension, convert if the table says to, and upload your recording. You'll get a transcript preview with every removed word struck through before you download, so nothing changes without you seeing it first. It's free to start, then $0.99 per video.

FAQ

Do I need to convert MOV files to MP4 before uploading?

No. MOV files from an iPhone or Mac upload as they are. Just send the original file rather than a compressed copy from a messaging app.

Why won't my OBS recording upload?

OBS often saves recordings as MKV, which isn't one of the accepted formats. Use File, then Remux Recordings in OBS to create an MP4 copy without losing quality.

Will converting a file reduce its quality?

Remuxing doesn't, because it only changes the container. Re-encoding with a converter can soften the picture slightly, so keep the original resolution and use a standard quality preset.

Can I upload a Zoom audio-only M4A file?

Zoom saves both an MP4 video file and an M4A audio file. Upload the MP4, since the accepted formats are MP4, MOV, AVI and WebM.

Does the file format change how long cleanup takes?

The format itself isn't the main factor. Recording length matters more, and the 9-minute-or-free guarantee applies once your file is uploaded.