📖 Tool Introduction

Video Info is a completely free, instant online tool for inspecting the metadata of your video files. Simply drag a local video onto the page and the browser uses an HTML5 video element to read the container information entirely on your device, then presents it in a tidy table: file name, file type, file size, total duration, frame resolution, aspect ratio, a reference frame rate, an overall bitrate estimated from file size and duration, and a reasonable guess at the video codec based on the container type. Throughout this process the tool never reads pixels, uploads a single byte, or makes any network request, so it works even on a computer inside an isolated intranet with no internet access. It is especially handy for content operators checking delivery specs, developers confirming parameters while debugging playback compatibility, and ordinary users who want to know how long, how large and how sharp a video is before sharing it, without installing professional transcoding software. The layout pairs a centered title block with a two-column information card, supports both drag-and-drop and click-to-browse import, switches automatically between Simplified Chinese, Traditional Chinese and English, follows the site theme colours and corner radius, and opens smoothly on both desktop and mobile browsers. No registration and no installation are required — the result table appears the moment the file's metadata is ready. Because the metadata is read directly from the file's own headers rather than guessed from its name, the reported duration and dimensions are exactly what the browser sees when it actually plays the file, which makes the figures reliable enough for asset checklists, upload forms and quality-control reports. The one-click copy button turns the whole table into a plain-text summary you can paste into spreadsheets or support tickets, and the example button generates a short test clip so first-time visitors can explore the interface before uploading anything real. The tool stores nothing on a server: there is no account, no upload history and no tracking, so sensitive internal footage, private recordings and unreleased drafts can all be inspected with complete peace of mind.

✨ Key Features

• Instant analysis: duration, resolution and every metadata field appear as soon as the file is imported
• Aspect reduction: the resolution is simplified with the greatest common divisor into a clean ratio such as 16:9
• Bitrate estimate: overall bitrate reference computed as file size times 8 divided by duration
• Codec guess: video coding format inferred from MP4, WebM, MOV, MKV and other container types
• One-click copy: the organised details are copied to the clipboard as plain text
• Private by design: every calculation runs locally, with zero uploads and zero leaks

📝 How to Use

1. Click the dashed area to choose a local video, or drop the file straight onto it
2. Wait a moment while the information table in the middle fills automatically
3. Review duration, resolution, aspect ratio, size and the estimated bitrate
4. Click Copy info to store the result on the clipboard for documents or tickets
5. Click Clear to inspect the next file, or Example to try an auto-generated sample clip

⚠️ Notes

• Decoding limits: reading depends on the browser decoder; MKV and AVI containers may fail, so MP4 is the safest choice
• Bitrate basis: the value is an overall estimate including the audio track, not a per-stream figure
• Codec guessing: the codec is inferred from the container type and is for reference, not a per-track probe
• File size: keep a single file under about 1GB; very large videos consume extra memory
• Sample clip: the Example button briefly records a canvas animation, which older browsers may not support