MKV: conversion steps
- Upload your MKV file to start.
- Convert MKV to 3GP.
- Download the MKV file.
About MKV files
a flexible open container for video with any number of audio and subtitle tracks
Matroska (MKV) is an open container format that can hold almost any video and audio codec, any number of audio and subtitle tracks, chapters and attachments.
It is popular for films and series with several audio languages and subtitle tracks, and for archiving video.
MKV: what conversion changes
Converting MKV re-encodes video.
MKV: settings to change
Before you convert MKV files, you can adjust: Video codec, Audio codec, Frame rate, Rate control, Width, Quality (CRF), Audio bitrate, Video bitrate, Quality (VBR), Resolution, Sample rate, Colours, Channels, Height, Scale fit, Normalize loudness, Dithering, Encoder preset, Trim start, Trim duration, Keep tags, and Remove metadata.
Limits of the MKV format
Many phones, browsers and TVs do not play MKV files directly, even when they support the codecs inside.
Common questions about MKV
Why won't my MKV file play on my TV or phone? Most TVs and phones play MP4 or H.264 but not the Matroska container, so converting to MP4 makes the file playable on almost any device.
Why convert video to MKV? When one file must carry several audio languages, subtitle tracks and chapters, no container holds them as flexibly.
Will an MKV file play on my TV or phone? Many smart TVs and Android players open MKV, but iPhone, iPad and some TVs do not support the container. Converting to MP4 is the reliable way to play it on Apple devices and upload services.