vtt61 B

VTT — Video QC Note 04

Video QC companion SAMPLE (bars-caption.vtt) for Wave G suites.

Preview — first 5 linesvtt

WEBVTT

00:00:00.000 --> 00:00:02.500
Colour bars SAMPLE

Specifications

Role: qc-note
Wave: G

What is a .vtt file?

WebVTT (VTT) is the W3C subtitle and caption format used by the HTML5 <track> element for timed text on the web. It extends the SubRip model with cue settings, positioning, styling, and metadata, and requires a WEBVTT header. It is the standard format for browser-based captions.

How to use this file

Use an example VTT to test HTML5 <track> caption rendering, cue-setting and positioning parsers, and converters between WebVTT and SRT.

How to use this file for testing

“VTT — Video QC Note 04” is a deterministic Novus Examples fixture for Conversion testing, Subtitle parsing. The same content exported across many formats and linked as a group, so you can convert one and diff against the expected twin.

Documented properties for this file: qc-note. Compare results against paired or grouped companions on this page when present (clean↔damaged, searchable↔scanned, or format twins) so scores stay reproducible across runs.

Download the file once, keep the path stable in CI or local scripts, and treat the spec table as the contract: dimensions, seeds, field lists, and roles are intentional. Corrupt or invalid samples are labelled as such — expect parsers to fail loudly rather than silently accept them.

Media fixtures are short and synthetic by design. Prefer waveform or transcript ground truth in the same group when measuring ASR, trim, upscale, or sync tools; do not assume broadcast-quality masters.

Code examples

<video controls src="clip.mp4">
  <track kind="captions" srclang="en" label="English" src="bars-caption.vtt" default>
</video>

Generated by generation/wave_g_pad.py. Free for any use, no attribution required — license.