Video to AVI Converter

How to Convert Video to AVI Online

1. Upload Your Video File: Drag and drop or click "+ Add Files" to select MP4, MOV, MKV, WebM, FLV, WMV, AVCHD, MTS, M2TS, MPEG, 3GP, or any of 35+ supported video formats. Batch uploads are supported.
2. Pick Video Codec and File Compression: Default codec is Xvid (the modern MPEG-4 ASP encoder). Choose H.264 for the widest player support, MPEG-4 / DivX for legacy DVD-style devices, MJPEG for frame-accurate editing, or HuffYUV for true lossless archival. Under File Compression, pick Quality Preset (Very High recommended), set a Specific file size in MB, or fine-tune with Constant Bitrate, Variable Bitrate, Constant Quality (CRF/qscale), or Constraint Quality.
3. Set Resolution and Trim (Optional): Keep original resolution, pick a Preset Resolution (4K, 1440p, 1080p, 720p, 480p down to 144p), scale by Resolution Percentage, or enter custom Width x Height. Use Trim → Time Range to crop the start/end down to a clip you actually need.
4. Convert and Download: Click "Convert". Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours — no sign-up, no watermark, never shared.

Why Convert Video to AVI?

AVI (Audio Video Interleave) is Microsoft's RIFF-based container, introduced in November 1992. It predates MP4 by a decade, and despite being older it remains the de-facto format for Windows-era editing pipelines, surveillance NVRs, and any workflow where simplicity and codec flexibility outweigh container efficiency. Converting to AVI is most useful when you need maximum compatibility with legacy software or a wrapper that won't second-guess your codec choice.

• Windows-era editors and capture cards — Older NLE software (early Premiere, Vegas 7-10, Pinnacle Studio, MAGIX) and capture cards from ATI, Hauppauge, and AVerMedia ingest AVI natively. Modern containers like MP4 with HEVC often fail to import on these tools.
• Frame-accurate editing with MJPEG — Motion JPEG inside AVI gives you intra-frame-only video where every frame is a self-contained image. Edits scrub instantly with no GOP guessing, which is why MJPEG-AVI remains common in scientific and machine-vision recording.
• Surveillance and dashcam archives — Many DVRs, NVRs, and dashcams still output AVI clips with MJPEG or MPEG-4 streams. Converting evidence footage to AVI keeps it readable in vendor playback software that doesn't speak modern codecs.
• DivX / Xvid legacy hardware — Standalone DVD players, older Blu-ray decks, smart TVs from the 2008-2014 era, and Roku Classic devices play DivX/Xvid-in-AVI but choke on H.265 MP4. AVI is still the safest bet for sideloading to legacy displays.
• Lossless archival with HuffYUV or FFV1 — When you need bit-perfect preservation (digitised VHS, broadcast masters, color-graded intermediates), AVI with HuffYUV is a long-standing lossless option that any FFmpeg-based player can decode without a Matroska/MKV dependency.
• Maximum codec freedom in one wrapper — Unlike MP4 (which is restrictive about codec combinations), AVI accepts virtually any audio/video codec pair: H.264 + AC3, MPEG-4 + MP3, MJPEG + PCM, FLV1 + AAC. Useful when you need a one-off wrapper without re-encoding both streams.

AVI vs MP4 — Format Comparison

For the reverse direction, see AVI to MP4. For other AVI workflows: compress AVI, trim AVI.

AVI Codec Quick Guide — Which One to Pick

Frequently Asked Questions

Why convert MP4 to AVI if MP4 is the modern standard?

Three common reasons: (1) your editor, DVR, or capture card only ingests AVI; (2) you need MJPEG-in-AVI for frame-accurate cutting where every frame is a keyframe; (3) you're targeting a legacy DivX/Xvid hardware player or older Windows app that rejects modern MP4 with H.265 or AV1. If none of those apply, MP4 is the better default — see AVI to MP4 for the reverse.

What's the file size limit for AVI files?

The original AVI 1.0 specification uses 32-bit RIFF size fields, which gave a practical 2 GB cap (and 4 GB hard ceiling for the entire file). The OpenDML extensions ratified by the AVI M-JPEG File Format Subcommittee in February 1996 — sometimes called AVI 2.0 — lift this with chunked indexing, so modern AVI writers (FFmpeg, VirtualDub) routinely produce multi-gigabyte files. We use FFmpeg's OpenDML-capable writer, so multi-hour 1080p captures convert without splitting.

Which codec should I pick — Xvid, H.264, or MPEG-4?

Xvid is the safe default for general playback on DivX-certified hardware and software. Pick H.264 if your target only needs to play on a modern Windows PC or VLC and you want smaller files. Pick MPEG-4 (Part 2) for 2005-2015-era DVD players and smart TVs. Avoid H.265 inside AVI — it works in FFmpeg but most third-party AVI players refuse it; use MP4 or MKV for HEVC instead.

Will subtitles and chapters survive the conversion?

No. AVI has no native subtitle or chapter track — those features were added by later containers like Matroska and MP4. If your source has embedded subtitles, demux them to a sidecar.srt before converting. If you need chapters or multiple subtitle tracks preserved, convert to MKV instead.

Does AVI support 4K or HDR video?

Technically yes for resolution — the OpenDML extension allows arbitrary frame sizes and we expose 4K (3840×2160), 5K, and 8K presets. But AVI was designed before HDR existed and has no standardized way to signal HDR10, HLG, or Dolby Vision metadata. If your source is HDR, AVI will flatten it to SDR-tagged pixels. Use MP4 or MKV to preserve HDR metadata.

Why is my AVI file so much bigger than the MP4 it came from?

AVI itself is just a container — the size depends on the codec. If you're converting MP4 (H.264 or H.265) to AVI with Xvid or MPEG-4, expect the file to grow 1.5-3× because those codecs are less efficient than H.264/H.265. To minimise growth, pick H.264 inside AVI, set Constant Quality (CRF) to 23, and keep the original resolution. To match the MP4 size exactly, use the Specific file size option under File Compression.

Can I batch-convert multiple videos at once?

Yes. Upload several files at once and they're queued with the same codec, quality, and resolution settings. If you need different settings per file, run them in separate batches. There's no file count cap and no watermark on the output.

Does it work in my browser without installing anything?

Yes — Chrome, Firefox, Edge, and Safari 14+ on desktop and mobile. Files upload to our conversion servers, FFmpeg handles the transcode, and the output streams back as a download. Nothing installs locally and we delete files automatically after a short retention window.

Will the audio track survive the conversion?

Yes. We default to AC3 audio for AVI (the codec most third-party AVI players expect), but you can also pick MP3, AAC, PCM (WAV-quality), MP2, or several legacy options. If your source has multiple audio tracks, AVI only carries one — pick which track to keep before converting, or use MKV if you need to preserve all of them.