Convert video files online

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Conversion Results:
# Output File Source File Action

NEW! Download Video Converter for Android to convert video files on your phone offline.

Steps:

1. Click "FILE" or "URL" button to switch local file or online file. Click "Choose file" button to select a file on your computer or enter an online file URL. The source file can also be audio format. Video and audio file size can be up to 200M.

2. Choose target video format. The target video format can be MP4, AVI, FLV, MPG, MKV, WMV, M2TS, WEBM, ASF, MOV, M4V, RM, VOB, OGV or GIF.

3. Click "Convert Now!" button to start conversion. It will automatically retry another server if one failed, please be patient while converting. The output files will be listed in the "Conversion Results" section. Click icon to show file QR code or save file to online storage services such as Google Drive or Dropbox.

Compare MP4 with MKV:
Name MP4 MKV
Full name MPEG-4 Part 14 Matroska
File extension .mp4, .m4a, .m4p, .m4b, .m4r, .m4v .mkv, .mk3d, .mka, .mks
MIME video/mp4 video/x-matroska, audio/x-matroska
Developed by International Organization for Standardization www.matroska.org
Type of format Media container Container format
Introduction MPEG-4 Part 14 or MP4 is a digital multimedia format most commonly used to store video and audio, but can also be used to store other data such as subtitles and still images. Like most modern container formats, it allows streaming over the Internet.MPEG-4 Part 14 or MP4 is a digital multimedia format most commonly used to store video and audio, but can also be used to store other data such as subtitles and still images. Like most modern container formats, it allows streaming over the Internet. The Matroska Multimedia Container is an open standard free container format, a file format that can hold an unlimited number of video, audio, picture, or subtitle tracks in one file. It is intended to serve as a universal format for storing common multimedia content, like movies or TV shows.
Technical details Most kinds of data can be embedded in MPEG-4 Part 14 files through private streams. A separate hint track is used to include streaming information in the file. The registered codecs for MPEG-4 Part 12-based files are published on the website of MP4 Registration authority (mp4ra.org). Matroska is similar in concept to other containers like AVI, MP4, or Advanced Systems Format (ASF), but is entirely open in specification, with implementations consisting mostly of open source software.
Associated programs Windows Media Player, RealPlayer, MPlayer, Media Player Classic, VLC Media Player, K-Multimedia Player VLC Media Player
Sample file sample.mp4 sample.mkv
Wiki MP4 on Wikipedia MKV on Wikipedia