AVI to MOV Converter

AVI vs MOV — Which Should You Convert To?

Most people land here for one of two reasons: a Mac editor refuses to import a .avi, or an old Windows-era clip needs to live in an Apple workflow. AVI is Microsoft's RIFF-based container from the Video for Windows era; MOV is Apple's QuickTime container and the format Final Cut Pro, iMovie, and QuickTime Player expect. If you are editing on a Mac, convert. If you are archiving a DivX-era collection that already plays fine in VLC, there is no reason to touch it.

AVI vs MOV Side by Side

When AVI Is Still the Right File

• The clip already plays in VLC and you only need to store it — re-encoding costs quality and gains nothing.
• You are feeding VirtualDub or another tool that expects RIFF chunks and an idx1 index.
• The source is uncompressed or HuffYUV-style intermediate footage that you want to keep bit-for-bit in an archive.
• Your target device is a DVD player or set-top box from the DivX era, which often lists AVI but not MOV.

When to Convert to MOV

• Final Cut Pro or iMovie rejects the import, or shows audio without picture — usually a missing DivX/Xvid decoder on macOS.
• You want H.264 or H.265 video that Apple hardware decodes without a third-party codec pack.
• You are handing footage to someone on a Mac and want a file they can double-click into QuickTime Player.
• The AVI is large and old-codec: H.264 typically rewrites the same picture in far fewer bytes than an Xvid or MS-MPEG-4 stream.

How to Convert AVI to MOV

1. Upload Your AVI File: Drag and drop your .avi clip onto the page or click "Add Files" to browse. You can queue several files and convert them with the same settings.
2. Pick the Video Codec and Audio Codec: Open Advanced Options. The output defaults to H.264 video with AAC audio, the pair QuickTime and Final Cut Pro decode natively. Switch the Video Codec to H.265 for smaller files on recent Macs, MPEG-4 for an older editor, or MJPEG for frame-by-frame work.
3. Set File Compression and Resolution: Under File Compression, the Quality Preset starts at "Very High (Recommended)"; you can instead choose Specific file size, Constant Bitrate, or Variable Bitrate. Video resolution offers Keep original, a Preset Resolution, or an exact Width x Height, and Trim starts at "Unchanged" until you set a Time Range.
4. Convert and Download: Click Convert and save your .mov. No sign-up, no watermark.

Choosing the Video Codec for Your MOV

A 15-second 426x240 source clip converts to roughly 1.2 MB as H.264 with AAC audio at the default preset, and to about 5.5 MB with MJPEG video at the same settings — the codec choice moves file size far more than the quality preset does. If you need the file to play on the open web instead of in an editor, convert the AVI to MP4; to shrink a MOV you already have, use the video compressor.

Frequently Asked Questions

Will converting AVI to MOV reduce video quality?

It depends on the source codec, because the server always re-encodes rather than copying the stream across. If your AVI holds DivX or Xvid, going to H.264 is a fresh lossy pass, so keep the Quality Preset at "Very High (Recommended)" or "Highest" to make the loss hard to see. If the AVI already carries H.264, re-encoding to H.264 in a MOV wrapper is close to a wash at a high preset. Either way, quality is capped by the original footage — the encoder cannot restore detail the first compression discarded.

Why does my AVI play in VLC but not in QuickTime Player?

VLC ships its own decoders for the codecs that filled AVI files in the 2000s: DivX, Xvid, and MS-MPEG-4. Apple's QuickTime Player does not include them, so it opens the container, finds a stream it cannot decode, and gives you a black frame, an error, or audio only. Converting to a MOV with H.264 video and AAC audio hands QuickTime, iMovie, and Final Cut Pro a stream they decode natively, which is the whole point of this conversion.

Does the MOV output play in Chrome or Firefox?

Treat it as no. Browser handling of the .mov extension is inconsistent even when the file holds ordinary H.264 and AAC, and no browser guarantees it. If the file needs to play on a web page, in an HTML5 <video> tag, or in a link someone opens on an unknown device, use AVI to MP4 instead — MP4 with H.264 and AAC is the combination every current browser supports.

What codecs can the converted MOV actually contain?

The video side offers H.264 (the default), H.265/HEVC, MPEG-4, and MJPEG. The audio side offers AAC (the default), AC-3, MP3, and PCM 16-bit or 24-bit. AAC is the right choice unless something downstream specifically asks otherwise: it is what Apple's own tools write, and it keeps the file small. PCM is worth choosing only when you are handing the file to an audio post-production step that wants uncompressed sound.

Will the MOV keep my AVI's subtitles or multiple audio tracks?

Plan on one video stream and one audio stream coming out. AVI files that carry a separate subtitle stream or several language tracks are unusual, and the conversion targets the primary streams rather than remapping extras. If your source has alternate audio tracks that matter, convert once per track or handle the remux in a desktop tool such as MKVToolNix before uploading.

My converted MOV is too large to send — how do I shrink it?

Three levers, in order of effect. Switch File Compression to "Specific file size" and type the megabyte figure you need. Drop Video resolution to a smaller Preset Resolution such as 720p, which cuts the pixel count roughly in half for every step down. Or change the Video Codec to H.265, which reaches the same picture quality at a noticeably lower bitrate than H.264. For a MOV you have already produced, run it through the video compressor.

Is MOV the same thing as MP4?

They are close relatives, not twins. Apple's QuickTime File Format was used as the basis for the ISO base media file format, which MP4 is built on, so both store data in nested boxes and both commonly carry H.264 video with AAC audio. The differences that matter in practice are ecosystem ones: MOV is the format Apple's editors prefer and can hold Apple-specific codecs such as ProRes, while MP4 is what browsers, phones, and streaming platforms expect. If you are editing, MOV; if you are publishing, MP4.

What happens to my AVI after the conversion?

Your file is uploaded over an encrypted connection, converted on our servers, and both the upload and the finished MOV are deleted automatically a few hours later. There is no sign-up, no watermark, and files are never shared or made public. The original .avi on your own machine is never modified. For very large source files the practical limit is upload size and time over your connection rather than any per-file cap.