Check video compatibility
See why a video might fail playback or upload, then pick a supported next action. The check runs on your device.
Drop a video to check compatibility
See which tracks this browser can decode, then open a tool that can fix the problem. Nothing is converted here.
Any media file this browser’s engine can read.
How to check video compatibility
Inspect the container, video and audio codecs, tracks, and this browser's decoder support. The online video compatibility checker can help diagnose playback or upload problems without changing or uploading the file.
Step 1
Choose a videoPick the file that will not play or upload.Step 2
Review the tracksCheck its container, codecs, and decoder support.Step 3
Choose a next stepOpen the suggested tool if the file needs a fix.
What to expect
- Supported inputs
- Any readable video file. Nothing is converted until you open another tool.
- What happens
- The checker inspects the container, tracks, codecs, and whether this browser can decode them. Decoder support is local, not a guarantee of playback on every device.
- Limits
- This is not an upload-acceptance test for a specific app. Destination rules can vary by account and version.
Private by design
Your video stays on your device
Mastershot processes your file locally in this browser. It does not need to be uploaded to a server, and you do not need an account to use the tool.
- No upload
- No signup
- No watermark
Questions
Playback and upload rules are different. Size, container, and codec requirements are often stricter than browser playback.
Convert to MP4 or try another browser. The next actions below the report point to the relevant tool.