Video to MP4 Converter
Convert a browser-supported video to an MP4 with AVC video and AAC audio. No account or processing-server upload is required.
More private browser video tools
Edit or convert one video without sending it to an Instasize processing server. Codec support and processing speed depend on the browser and device.
Edit video
Create a broadly compatible MP4
Common video inputs
Select an MP4, MOV, WebM, MKV, AVI, or M4V file. A recognized extension does not guarantee that the browser supports every codec inside the container.
Standardized output
The converter requests AVC video and AAC audio in an MP4 container so the result can work across many current browsers, apps, and devices.
Inspect the result
Re-encoding can change size and quality. Play the complete output and verify duration, sync, orientation, and dimensions.
Output, privacy, and compatibility
Private processing
The selected video is read and processed in this browser with MediaBunny. This workflow does not upload the video to an Instasize processing server.
MP4 output
Completed edits download as MP4 files with AVC video and AAC audio when audio is retained. Re-encoding can change file size and visual quality.
Browser limits
Codec support, speed, and memory limits vary by browser and device. Keep the original file and review the complete result before deleting or publishing anything.
How to convert a video to MP4?
- 1
Step 1: Choose a video
Select one supported video file up to 200MB.
- 2
Step 2: Convert to MP4
Start a local browser conversion to AVC and AAC.
- 3
Step 3: Review
Play the completed MP4 and check its important details.
- 4
Step 4: Download
Save the MP4 while retaining the original source file.
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Resizing photos for social media should be a cinch, but most editing programs are a pain to use. Of the dozen I’ve used, Instasize is the fastest, easiest and most consistent...
Great Sizes
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Always helpful
Always helpful when needing to resize photos
Huge fan
I love this app. Makes posting all types of photos. Love how it makes them fit on different formats
I’ve been using for years. Can’t work without it.
I use this app everyday to perfectly resize images for all of my social media platforms
LOVE
This app saved the day for me! I’m finally able to resize my photos for IG....effortlessly
Great App
We use this App weekly to resize pics for social media posts. Very user friendly, easy to use program when you want to get in and out quickly...
The file picker accepts common video containers including MP4, MOV, WebM, MKV, AVI, and M4V. The browser must also support the codecs stored inside the file.
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