Useful guides and tutorials related to codecs and multimedia.

How to make Windows open every HEVC file - .hevc, .h265, .mp4 and .mkv - with the player you actually want, and stop the setting resetting itself.

The best free IPTV players for M3U playlists on every device - and exactly how to load your list in each one.

Five free fixes for out-of-sync MP4 audio on Windows - from an instant audio-delay nudge to resolving the splitter, decoder, or renderer causing the drift.

A plain-English comparison of AC3 Filter and LAV Audio, explaining which audio decoder to install for AC3 and DTS sound in 2026 and who still has a reason to pick the older one.

A friendly, no-jargon walkthrough that shows everyday users how to watch their PC's internet traffic in real time using the free Wireshark network analyzer.

The five codecs behind almost every modern video and song - what each does best, and how to play all of them on Windows for free.

A frustration-first guide to playing any MP4 file - online with no install, or with the right free desktop player and codecs when your browser gives up.

Three free ways to see what codec is inside a video file and which filters your player is using to play it on Windows.

Three free ways to convert AVIF to JPG, PNG, or WebP - desktop batch, online, or power-user. No upload, no watermark, batch-ready.

Boot a full Android OS on any PC from a portable SSD in 15 minutes. Bliss OS + X Drive Writer + free.