Free Online Video Tools & Streaming Guides

Browser-based video utilities that run entirely on your device. No uploads, no installs, no tracking. Parse M3U8 playlists, inspect video metadata, convert formats, and learn streaming technology.

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Online Video Tools

All tools run 100% in your browser. Your files never leave your device.

M3U8 Parser

Parse and analyze HLS manifest files. View streams, segments, and encryption details.

Video Metadata Viewer

Inspect codec, resolution, bitrate, and container details of any video file.

TS to MP4 Converter

Convert MPEG-TS segments to MP4 format directly in your browser using WebAssembly.

Subtitle Converter

Convert between SRT, VTT, ASS, and other subtitle formats with encoding support.

Bitrate Calculator

Calculate optimal bitrate settings for streaming based on resolution and frame rate.

HLS Manifest Validator

Validate HLS playlists against the specification and detect common issues.

Latest Articles

Streaming technology guides and video engineering deep-dives.

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How HLS Streaming Works

A complete guide to HTTP Live Streaming protocol, from manifest files to adaptive bitrate.

Understanding Video Containers vs Codecs

Learn the difference between MP4, MKV, WebM containers and H.264, H.265, VP9 codecs.

M3U8 Playlist Format Explained

Deep dive into M3U8 tags, variant streams, and encryption key management.

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Why gv45?

100% Browser-based

Every tool runs entirely in your browser using WebAssembly and modern Web APIs. No server processing, no file uploads, no waiting.

Zero Tracking

We don't track your usage, collect your files, or sell your data. Your media stays on your device, always.

Open Knowledge

In-depth technical guides on streaming protocols, video codecs, and media engineering. Written by engineers, for engineers.

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