---
title: "Media Player Codec Pack - For Windows 11 / 10 / 8.1 / 7"
description: "Media Player Codec Pack for Windows 11, 10, 8.1 and 7. Play MKV, MP4, AVI, MOV, HEVC, H.264, AV1, FLAC, AAC, AC3, DTS and more."
canonical: "https://www.mediaplayercodecpack.com/"
version: "5.1.2"
date_modified: "2026-06-25"
price: "Free"
registration_required: "No"
---

# Media Player Codec Pack

Media Player Codec Pack for Windows 11, 10, 8.1 and 7. Play MKV, MP4, AVI, MOV, HEVC, H.264, AV1, FLAC, AAC, AC3, DTS and more.

## Download facts

- **Latest version:** 5.1.2
- **Updated:** 25 June 2026
- **Price:** Free
- **Registration required:** No
- **Recommended edition:** Standard
- **Recommended download:** https://www.mediaplayercodecpack.com/standard/

## Choose an edition

| Edition | Best for | URL |
| --- | --- | --- |
| Standard | Most Windows users who want broad everyday playback support. | https://www.mediaplayercodecpack.com/standard/ |
| Plus | Power users who want the largest toolkit and extra components. | https://www.mediaplayercodecpack.com/plus/ |
| Lite | Older, smaller, or simpler systems that need a smaller install. | https://www.mediaplayercodecpack.com/lite/ |

## Supported playback

- Common containers and formats including MKV, MP4, AVI, WEBM, FLV, M4V, TS and 3GP, with many additional containers also supported.
- Modern video formats including H.264, H.265, HEVC, AV1, MPEG-2, MPEG-4, DivX and XviD.
- Popular audio formats including AAC, AC3, DTS, FLAC, ALAC, OGG, APE and MPC, with many additional audio formats also supported.
- Playback support for Windows Media Player and compatible DirectShow-based players.

## Why install a codec pack?

A codec pack adds playback components that help Windows and compatible media players open video and audio files that may not work on a default installation. It is useful when files fail to open, play without sound, show only video, or report that a codec is missing.

## Common playback problems

- Error 0xc00d5212: missing codec — https://www.mediaplayercodecpack.com/errors/fix-0xc00d5212/
- Error 0xc00d36c4: unsupported format — https://www.mediaplayercodecpack.com/errors/fix-0xc00d36c4/
- Windows Media Player error 80040265 — https://www.mediaplayercodecpack.com/errors/fix-80040265/
- Video plays but there is no sound — https://www.mediaplayercodecpack.com/errors/video-plays-no-sound/
- HEVC/H.265 codec missing — https://www.mediaplayercodecpack.com/errors/hevc-h265-codec-missing/
- AV1 codec missing — https://www.mediaplayercodecpack.com/errors/av1-codec-missing/
- MKV, MP4, or MOV file not playing — https://www.mediaplayercodecpack.com/errors/mkv-file-not-playing/

## Frequently asked questions

### What is the definition of codec?

A codec is software or hardware that encodes and decodes digital media, such as audio or video. The word codec comes from coder-decoder or compressor-decompressor.

### What is a codec used for?

A codec is used to compress, store, transmit, and play back digital media files. Codecs help reduce file size while preserving audio or video quality, making streaming, downloading, recording, and playback more efficient.

### What is a codec pack?

A codec pack is a set of playback components that lets Windows open video and audio formats that are not fully supported by default.

### Why will my video not play?

If a file will not open, has no sound, or only shows part of the video, your system may be missing support for that format. Installing the codec pack solves that in many common cases.

### Which version should I download?

The Standard edition is the best choice for most people. Choose Plus if you specifically want extra tools, or Lite if you prefer a smaller, simpler install.

### Does this work with Windows Media Player?

Yes. It is designed to improve playback support in Windows Media Player and other compatible players already installed on your PC.

### Do I need this if I already have VLC?

VLC can already play many formats on its own, but this pack can help add broader playback support across Windows and other media players on your system.

### Is the codec pack safe?

Yes. It is designed for a clean install, updated for compatibility and stability, and all editions are free to download.