Can this inspect a local file without uploading it?

Yes. Local files stay in the browser. The page reads what the browser can expose from the file and does not upload it.

Will this show every audio and video track like ffprobe?

No. This is a lightweight browser-side inspector, not a full media probe. Some browsers expose only partial track information, so the page reports those limits honestly.

What is the best next step after metadata looks correct?

Use MP4 Player, HLS Player, or DASH Player for playback truth-checks, Clip Planner for segment planning, or Social Video Share when the public URL is ready.

Boss classic theme

Video Metadata Inspector

A structured public layer for M3U8, subtitle, and video helper workflows.

Open workspace Browse tools

LayerPublic first

Tools, guides, and blog now share one visual language.

ThemeBoss classic

The legal-page color system becomes a formal theme preset.

RoutingWorkspace second

Execution still stays behind the public layer.

Video toolset

Video Metadata Inspector

Inspect duration, dimensions, MIME, size, and browser-exposed track hints for a local file or direct video URL.

Local files, direct URLs, metadata truth-checks

Open MP4 Player Open workspace

Tool action area

Qualify the job before execution

Keep the public layer focused on qualification before heavier execution starts.

Load a local file or direct URL
Load a local file or direct URL
Review duration, size, dimensions, and track hints
Review duration, size, dimensions, and track hints
Route into playback, clipping, or distribution
Route into playback, clipping, or distribution

Open MP4 Player Open related guide Back to tools hub

Why this page exists

Why use

Use the public surface to qualify the job before moving into execution.

Best for

Metadata truth-checks before clipping, publishing, or sharing

Best for Metadata truth-checks before clipping, publishing, or sharing

Input

Local video file or direct video URL

Input Local video file or direct video URL

Output

Browser-side metadata summary + JSON export

Output Browser-side metadata summary + JSON export

Status

Live now

Status Live now

Best use cases

Video Metadata Inspector

Inspect duration, dimensions, MIME, size, and browser-exposed track hints for a local file or direct video URL.

Check the real duration, dimensions, and estimated bitrate before you publish or clip a file.

Validate a direct video URL before you blame packaging, sharing, or preview metadata.

Export a clean metadata JSON snapshot for QA notes or handoff.

Known Issues

Known issues and next steps

Keep common errors, fallback routes, and next actions on the same surface so public pages and workspace flows tell the same truth.

highp0

M3U8 URL will not open

The URL fails immediately, child playlists 404, or the copied link only works in the original session.

Run M3U8 Link Checker Open M3U8 Inspector Read the playback-error guide

highp0

HLS playback fails after the manifest loads

The manifest parses, but playback stalls, shows a black screen, or throws browser/media errors.

Open HLS Error Diagnosis Open M3U8 Player Open Player Workspace

mediump1

M3U8 plays but has no audio

Video starts, yet the audio track is missing, muted by variant choice, or unavailable in the current browser lane.

Open M3U8 Player Open M3U8 Inspector Open Player Workspace

mediump1

M3U8 subtitles do not show

Playback works, but subtitle tracks are missing, disabled, malformed, or not packaged for the browser surface.

Open Subtitle Sync Open Bilingual Subtitles Open Subtitles Workspace

Recommended order

Inspect metadata first, then branch into playback, clipping, or sharing.

Keep the public layer focused on qualification before heavier execution starts.

Load a local file or direct URL
Load a local file or direct URL
Review duration, size, dimensions, and track hints
Review duration, size, dimensions, and track hints
Route into playback, clipping, or distribution
Route into playback, clipping, or distribution

Start from a task intent

Recommended entry

Video Metadata Inspector

Inspect duration, dimensions, MIME, size, and browser-exposed track hints for a local file or direct video URL.

Video Metadata Inspector

Recommended route map

Inspect metadata first, then branch into playback, clipping, or sharing.

Metadata Inspector should answer source questions before the workflow moves into execution or distribution.

Open MP4 Player

Confirm direct MP4 playback after metadata looks sane.

Open route

Open Clip Planner

Mark highlights only after duration and dimensions are known.

Open route

Keep metadata truth-checks connected to the next useful page.

Check playback after metadata inspection is complete.
Clip Planner
Use the known duration to plan a clean clip range.
Use the playback guide when the same asset fails only after the workflow moves into streaming or browser playback symptoms.

Use Video Metadata Inspector as the fastest browser-side metadata truth check.

Can this inspect a local file without uploading it?
Yes. Local files stay in the browser. The page reads what the browser can expose from the file and does not upload it.
Will this show every audio and video track like ffprobe?
No. This is a lightweight browser-side inspector, not a full media probe. Some browsers expose only partial track information, so the page reports those limits honestly.
What is the best next step after metadata looks correct?
Use MP4 Player, HLS Player, or DASH Player for playback truth-checks, Clip Planner for segment planning, or Social Video Share when the public URL is ready.

Move from metadata inspection into playback or clipping without leaving the public layer too early.

Keep the public page as the qualification layer. Open the workspace only when you need repeat execution or grouped video work.

Open MP4 Player Open workspace