WebP to AVI Converter

How to Convert WebP to AVI Online

1. Upload Your WebP Files: Drag and drop or click "+ Add Files" to load static or animated WebP images. Batch upload is supported — drop a whole folder for a multi-clip slideshow or convert a single animated WebP into one AVI clip.
2. Pick Video Codec and Audio Codec: Default is MPEG-4 (XviD/DivX) for maximum legacy AVI compatibility. Pick H.264 (H264_SELECTION) for smaller files at the same quality, MJPEG for frame-accurate editing in older NLEs, or MPEG-2 for DVD-authoring pipelines. Audio codec defaults to AAC; switch to MP3, AC3, or PCM (uncompressed) for Windows Movie Maker and other legacy importers.
3. Set Image Duration, Background Color, Resolution, and Compression (Optional): Choose per-frame Duration (1/60s, 1/30s, 1/24s, 1/10s, 1/5s, 1/3s, 1/2s, 1s, 2s, 3s, 4s, 5s, 6s, 7s, 8s, 9s, 10s) — pick 1/24s to mirror animated WebP playback or 3-5s for slideshows. Set Background Color (Black, White, and 22 named colors) for letterboxing when aspect ratios differ. Resolution offers Keep Original, Fixed Presets (1920×1080, 1280×720, 854×480, 640×480, 800×600, etc.), Preset Resolutions (2160P, 1440P, 1080P, 720P, 480P, 360P, 240P, 144P), or custom Width/Height. Tune compression with Quality Preset (Highest → Lowest), Constant Quality CRF, or Constraint Quality (CRF + max bitrate).
4. Convert and Download: Click Convert. Files process in your browser session — no sign-up, no watermark, no daily quota.

Why Convert WebP to AVI?

WebP is Google's modern still and animated image format that ships in every major browser since 2020, but it's invisible to almost every legacy video tool. AVI, introduced by Microsoft in 1992, remains the lowest-common-denominator container for older Windows software, embedded media players, and broadcast workflows. Converting WebP to AVI bridges a 30-year compatibility gap that no modern format can.

• Windows Movie Maker and Pinnacle Studio imports — Movie Maker (still in use on Windows 7/8.1 machines and offline studio rigs) refuses WebP entirely but happily ingests AVI with MPEG-4 or DivX video and MP3 audio. Pinnacle, VideoStudio, and PowerDirector legacy editions are the same.
• Animated WebP unrolling — A 30-frame animated WebP from a Discord sticker pack or product hero shot becomes a 30-frame AVI you can drop into any timeline, scrub frame-by-frame, or export to DVD. Frame timing is preserved by matching duration to 1/24s or 1/30s.
• Industrial displays and digital signage — Older Scala, Onelan, and BrightSign players, factory HMI panels, and car-entertainment head units dating from 2010-2018 only loop AVI/MPG. WebP plays nowhere in that ecosystem.
• Surveillance and analytics pipelines — DVR/NVR review software, OpenCV ≤3.x demo apps, and MATLAB R2018a's VideoReader only accept AVI containers. Converting WebP capture exports lets the toolchain run.
• DVD authoring and broadcast handoffs — TMPGEnc, DVD Architect, and station ingest systems still want MPEG-2 in AVI for SD masters. WebP-to-AVI with the MPEG-2 codec produces a drop-in master.
• Photo slideshows for older relatives — Burn an AVI of family photos to a USB stick that plays on a 2014 Samsung TV or a Honda head unit that has never heard of WebP, MP4, or HEVC.

If you don't specifically need AVI, WebP to MP4 gives smaller files with H.264, WebP to GIF preserves animation for chat apps, and WebP to WebM is best for modern web embeds.

WebP vs AVI — Format Comparison

Codec Quick Guide for AVI Output

Frequently Asked Questions

Will animated WebP frames transfer to AVI correctly?

Yes. Each frame of the animated WebP becomes a frame of the AVI. To match the original animation speed, set the per-frame Duration to 1/24s (24 fps cinematic), 1/30s (30 fps web standard), or 1/60s. Static WebP files become a single still frame extended to whatever Duration you choose (typically 3-5 seconds for slideshows).

Why pick AVI over MP4 in 2026?

AVI exists for compatibility, not efficiency. Pick AVI when you're feeding a tool, OS, or hardware unit that predates MP4/H.264 ubiquity — Windows Movie Maker, MATLAB ≤R2018a, OpenCV 2.x demo code, certain DVR review apps, BrightSign Classic players, factory HMI panels, in-car head units from 2010-2018, and DVD authoring suites. For everything else, WebP to MP4 gives you 40-60% smaller files at the same visual quality.

Which codec gives the smallest AVI file?

H.264 inside AVI gives you the smallest file at any given visual quality — typically 40% smaller than the default MPEG-4 (XviD) and 70% smaller than MJPEG. The trade-off is that some pre-2010 Windows software can't decode H.264-in-AVI. If your target is Windows Movie Maker or a hardware DivX DVD player, stick with the MPEG-4 default.

How do I make a slideshow from multiple WebP photos?

Upload all your WebP files at once and the converter merges them in alphabetical order into a single AVI. Set per-image Duration to 3-5 seconds for a comfortable viewing pace, pick a Background Color (Black is standard) to letterbox photos with mismatched aspect ratios, and choose a Fixed Resolution like 1920×1080 so every frame outputs at the same size. Add an MP3 audio track via the audio codec setting if needed by your target player.

Can I trim or shorten an animated WebP during conversion?

Yes. Open the Trim option (VIDEO_TRIM) and set a start time and duration in HH:MM:SS.sss or seconds — useful when an animated WebP has 200+ frames but you only want the first 2 seconds. Trimming runs in the same pass, so there's no quality loss from re-encoding.

What's the maximum WebP file size and how many can I convert at once?

Files process in-browser, so the practical limit is your device's available memory rather than a server quota. There's no per-account daily cap, no sign-up, no watermark. Batch converting 100+ static WebP photos into a single slideshow AVI typically completes in under a minute on a modern laptop.

Will the resulting AVI play in Windows Movie Maker?

Yes, with the right codec combination. Use the MPEG-4 (XviD/DivX) video codec with MP3 audio for the broadest compatibility — that combination has been the de facto Movie Maker standard since 2003. Avoid H.265/HEVC and Opus audio: those are too modern for Movie Maker's decoder list.

Why is my AVI larger than the source WebP?

This is normal. WebP is one of the most space-efficient image formats ever made — it compresses 30% better than JPEG and 26% better than PNG. AVI is a 1992 container with no modern compression by default; even with H.264 inside, you're moving from a per-frame compressed image into a per-frame video container with mandatory headers, audio sync metadata, and (usually) less aggressive codecs. Expect a 5-20× size increase, especially if you choose long per-frame durations.

Does converting WebP to AVI add an audio track?

By default the AVI is silent (no audio stream). The audio codec setting only kicks in if you upload audio alongside the WebP — if you want background music for a slideshow, convert the WebP to AVI first, then merge with audio in a video editor or use a tool that mixes audio at conversion time.