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Video Inspection Studio

Understand a video's container, codecs, streams and timing—with a browsable frame preview and reports made entirely on your device.

◈ MP4 / MOV◈ WebM / Matroska◈ AVI summary◈ Private by design
INSPECTION WORKSPACE OFFLINE-FRIENDLY

Video Inspection Studio

Choose a video to inspect its metadata.

FRAME VIEWER

Look inside the video

No media loaded
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Your frame preview will appear here.

00:00.00000:00.000

Frame stepping seeks by nominal or average frame interval when known, otherwise by 1/30 second. Exact encoded-frame seeking and frame counts are not guaranteed. Presented decoded frame time: not available.

Frame markers

0 / 50

Mark a moment and describe what you noticed. Markers are included in exported inspection reports, but are not embedded in the video.

Stream properties

Metadata

Inspect a file to see codec, track and audio details.

Capture sequence

Optional

Create a 3 × 3 contact sheet from representative points in a decodable video.

Ready · no video uploadedLocal-first · No tracking inside this tool
UNDERSTAND YOUR FILES

From mysterious file to useful technical report.

01 / Choose

Open your video

Select a local MP4, MOV, WebM, MKV or AVI video. We inspect its byte signature, not just its extension.

02 / Inspect

See what is actually there

Review container, stream codecs, resolution, timing and audio properties. Missing data is shown honestly.

03 / Review

Navigate the frames

Use browser playback and nominal frame stepping to inspect visual frames and capture representative images.

04 / Share

Export the facts

Download a JSON, CSV, Markdown or printable HTML report without transmitting the original video.

This is a metadata and preview tool, not a full demuxer/decoder or professional bitstream analyzer. MP4/MOV and WebM/Matroska track metadata are parsed locally; AVI supports common stream headers; uncommon AVI variations may return partial values. Fragmented files, protected media and unusual codec/private metadata may have partial results.

Using Video Inspection Studio

Open a supported video container or queue a bounded metadata batch. Review stream information and supported timing indicators, then preview browser-decodable files. Export reports and frame-marker notes before replacing or clearing the source.

Metadata parsing support differs from browser decoding support. Stepping/seeking is approximate, timing tables do not prove presentation-time VFR behavior, and bitrate may be estimated. DRM/protected media and fragmented MP4 are outside full supported inspection. Frame markers are session-only; batch reports contain metadata rather than video bytes. Header/file and operation budgets apply.

Workflow and output choices for Video Inspection Studio

Inspect supported video-container metadata, review stream and timing fields, and preview files the browser can decode. Add session frame markers or process a bounded metadata-only batch.

Reports describe parsed metadata, not video bytes. Frame markers are session-only; a batch report summarizes metadata and does not package source media or prove that browser playback supports each codec.

Example workflow

  1. Open a supported container and review the parsed stream information.
  2. Compare timing indicators and add session markers to frames worth reviewing, using approximate seeking.
  3. Export a metadata report or queue a small batch; verify playback separately in an appropriate decoder.

Authored example: Review a fictional clip’s container fields and mark a frame for follow-up. Distinguish the parsed codec label from whether this browser can decode the video; the example is not a VFR certification.

Limits and handling: Metadata parsing differs from playback and full frame analysis. Timing tables do not prove presentation-time VFR behavior; seeking is approximate and bitrates may be estimates. DRM/protected media and fragmented MP4 are outside full supported inspection.

Video Inspection Studio questions

Does a parsed codec field guarantee the browser can play the file?

No. Container metadata inspection and browser decoding support are separate capabilities.

Do timing tables certify variable-frame-rate timing?

No. The reported timing indicators do not prove actual presentation-time VFR behavior.

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