WebP to MP4 Converter

Animated WebP becomes a video with its original timing; still WebP becomes a clip or slideshow of the length you choose. Transparency is filled with a colour you pick; output is a silent H.264 MP4.

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Supports: WEBP

OptionsAdvanced Options - Our defaults are optimized for the best results. We recommend you keeping the defaults unless you have a specific need.
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Merge strategy
Select Merge images to combine all uploaded files into a single video. Use Video per image to create a separate video for each individual file.
Image Duration
Duration
How long each still image is held on screen. This applies to static images — including a static WebP, AVIF or HEIC. It is ignored for animated sources, which keep their own frame timing: GIF, APNG, and an animated WebP, AVIF or HEIC.
Background Color
Background Color
File Compression
Preset
Video resolution

Convert WebP to MP4 online, free. This WebP to MP4 converter handles both kinds of WebP: an animated WebP keeps every frame and its timing and becomes a video clip; a still WebP becomes a clip of the length you choose. Transparent areas take a colour you pick, and the output is a silent H.264 MP4 that plays where WebP does not — messaging apps, video players and editors.

How to convert WebP to MP4

  1. Upload the WebP files: Drag .webp files onto the page or click Add Files. Animated and still files can be mixed; several files are joined into one video in list order unless you change Merge strategy.
  2. Check duration and background: Image Duration (default 5 seconds) applies to still images only — an animated WebP plays at its own speed. Set Background Color to the colour that transparent pixels and any empty frame area should take.
  3. Convert and download: Click Convert. The default Very High preset and H.264 codec are right for stickers, memes and product loops alike; Advanced Options holds frame size, codec and file-size controls. Download the MP4.

Animated WebP

An animated WebP is detected automatically. Its frames are carried over one by one and the frame delays stored in the file set the video's timing, so a loop that runs for two seconds in a browser runs for two seconds in the MP4. Image Duration is ignored for these files. The MP4 plays once; looping is a property of the player or the page that embeds it, not of the file.

Image Duration and Merge strategy

For still WebP images, Image Duration is how long each one is shown: 5 seconds per frame by default, anything from 1/60 of a second to 10 seconds. The fractions are for numbered frame sequences exported as WebP — 1/30 s gives a 30 fps clip. Merge images, the default strategy, joins all uploaded files into one MP4 in list order, stills held for the duration and animations played through; Video per image writes a separate MP4 for each file.

Frame size and Background Color

WebP supports transparency; MP4 does not. Transparent and semi-transparent pixels are composited onto the Background Color, and the same colour fills any part of the frame the image does not cover. Choose the colour of the surface the video will sit on — white for a light page, black for a dark theme; 23 further named colours are offered. Video resolution is Keep original by default, which uses the image's own dimensions and is right for stickers and small loops. Fixed Resolutions supplies standard frames such as 1920 × 1080, 1280 × 720, 1080 × 1920 (vertical) or 1080 × 1080 (square); the image is scaled to fit inside with its proportions intact.

Quality, codec and file size

The default Quality Preset, Very High, encodes H.264 at CRF 18 for 1080p output; small graphics and flat colours survive it without visible change. File Compression also offers a target size as a percentage or an exact figure in MB, constant or variable bitrate, and a manual CRF (16–51 for H.264). In Advanced Options, Video Codec adds H.265, AV1, VP9 and MPEG-4; keep H.264 unless you know the destination decodes something newer.

When to convert WebP to MP4

  • An animated sticker or meme has to be posted where animated WebP is rejected or shown as a single frame.
  • A loop downloaded from a website must open in a video editor or a desktop player.
  • A WebP must be sent in a chat or mail app that treats it as an unknown attachment.
  • Still WebP product images are wanted as a short slideshow video.

What to expect

Expect a slightly larger file than the source for very short animations: an MP4 carries container and key-frame overhead that a few-kilobyte WebP does not, though the result is still small. The video has no audio track. Colour is preserved; the one unavoidable change is that transparency becomes a solid colour, because the MP4 produced here carries no alpha channel.

Frequently Asked Questions

Will the animation speed stay the same?

Yes. The delays stored in the animated WebP define the timing of the video, frame for frame.

What happens to a transparent background?

It is flattened onto the Background Color. Pick the colour that matches where the video will be shown; semi-transparent edges blend into it.

Can I join several WebP files into one MP4?

Yes. Upload them together with Merge strategy on Merge images. Stills are held for the Image Duration, animations play through, and the clips follow the order of the file list.

Can I convert the MP4 back to WebP later?

Use MP4 to WebP. Transparency lost in this direction cannot be recovered.

Does XConvert keep my files?

Files are processed on our servers and deleted automatically after a few hours.

References

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