Video file inspector

What this tool does

The inspector loads the file into a video element and reads metadata. That depends on the browser’s decoders. ConvertPass does not ship FFmpeg in this phase and will not invent codec strings the browser does not expose.

How to use it

1. Drop a video under 80 MB.
2. Wait for metadata. Cancel if the browser hangs.
3. Read duration, width, height, and file size.

Privacy

This tool processes files and text locally in your browser. Your content is not uploaded or stored by this site.

ConvertPass does not include your input in analytics, URLs, or error reports. Encoding: Container as the browser understands it. Limit: 80 MB (80.00 MB).

Limitations

• Safari, Firefox, and Chrome support different codecs. A file that fails here may still be valid.
• Bitrate is estimated from file size and duration, not read from a container header.
• No server-side transcode is offered.

Example

clip.mp4 1920×1080, 12.4 s, 8.1 MB

duration 12.4s, 1920×1080, estimated total bitrate from size/duration

Troubleshooting

Metadata never loads

The codec is probably unsupported. Try Chrome for H.264/AAC MP4, or convert offline. ConvertPass will not silently upload the file to transcode it.

FAQ

Can you show HEVC vs AVC?

Only if MediaSource or the video element exposes that information. Many browsers do not. We will not guess from the file extension.

Is the file uploaded?

No. It is read as a blob URL in this page.

Why the 80 MB cap?

Large local videos can exhaust memory on phones. Raise it later only after device testing.

Will trimming come later?

Yes, as a separate phase, with capability detection and explicit resource warnings. It is not hidden behind this inspector.