MP4 to ASF - Convert video online
Conversion Results:
| # | Output File | Source File | Action |
|---|
How to convert MP4 to ASF:
1. Click the "Choose Files" button to select multiple files on your computer or click the "URL" button to choose an online file from URL, Google Drive or Dropbox. The source file can also be audio format. Video and audio file size can be up to 200M. You can use file analyzer to get source video's detailed information such as video codec, duration and bitrate.
2. Set target video format, bitrate, aspect ratio, frame size and frame rate. All audio streams will be removed if the "Mute" option is checked. The target video format can be MP4, AVI, FLV, MPG, MKV, WMV, M2TS, WEBM, ASF, MOV, M4V, RM, VOB, OGV or GIF.
3. Click the "Convert Now!" button to start batch conversion. It will automatically retry conversion on another server if one fails, 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 cloud storage services such as Google Drive or Dropbox.
MP4 vs ASF:
| Name | MP4 | ASF |
| Full name | MPEG-4 Part 14 | Advanced Systems Format |
| File extension | .mp4, .m4a, .m4p, .m4b, .m4r, .m4v | .asf |
| MIME | video/mp4 | video/x-ms-asf, application/vnd.ms-asf |
| Developed by | International Organization for Standardization | Microsoft |
| Type of format | Media container | Digital 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. | Advanced Systems Format (formerly Advanced Streaming Format, Active Streaming Format) is Microsoft's proprietary digital audio/digital video container format, especially meant for streaming media. ASF is part of the Media Foundation framework. |
| 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). | The format does not specify how the video or audio should be encoded; it just specifies the structure of the video/audio stream. This is similar to the function performed by the QuickTime, AVI, or Ogg container formats. One of the objectives of ASF was to support playback from digital media servers, HTTP servers, and local storage devices such as hard disk drives. |
| Associated programs | Windows Media Player, RealPlayer, MPlayer, Media Player Classic, VLC Media Player, K-Multimedia Player | Windows Media Player |
| Sample file | sample.mp4 | sample.asf |
| Wikipedia | MP4 on Wikipedia | ASF on Wikipedia |