Video
Video file inspector
Read duration and resolution from a video without uploading it.
This tool processes files and text locally in your browser. Your content is not uploaded or stored by this site.
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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 invent codec strings the browser does not expose.
How to use it
- Drop a video under 80 MB.
- Wait for metadata. Cancel if the browser hangs.
- Read duration, width, height, and file size.
Supported input
- Video files the browser can demux, up to 80 MB
Output
- On-page technical fields plus optional JSON download
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. Short local re-encodes live on the video compressor.
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?
Trim is still a separate job. Compress and convert a short clip to MP4 or WebM in the video compressor; that tool has its own duration and encoder caps.
Related tools
- Video compressor
Auto-compress a short clip locally to MP4 or WebM, using this browser’s encoder.
- Video bitrate calculator
Turn file size and duration into an estimated bitrate, locally.
- Duration and file-size calculator
Estimate how big a clip will be from duration and bitrate.
Related guides
Related formats
Last reviewed 16 August 2026. Report a problem. Reports do not include your input.