Video converter from ASF to WEBM



Valid sizes are 128x96, 176x144, 352x288, 704x576, and 1408x1152


Reverse video and audio


# ResultSource file

To convert video, follow these steps::
  • Use the "Local file" or "Online file" buttons to specify how to upload the video to the server. Use the "local file" if you need to convert a file from your computer, in order to specify a file on the Internet, select "Online file" and in the appeared field paste the link to the file. We do not set any limits on the size of the video file, but the larger the file, the more time it will take to convert. Just be patient and everything will turn out. You can convert files from AVI, WMV, MPEG, MOV, FLV, MP4, 3GP, VOB and other video formats.
  • To start the conversion, click the "Convert" button to start the transformation. If the conversion is successful, the file will be available in the "Conversion Results" section. If you just need to download a file, click on the file name. If you want to get other ways to save, then click on the icon to generate a QR code to upload the result to your mobile phone or tablet, and also if you want to save the file in one of the online storage services such as Google Drive or Dropbox.

Please be patient in the conversion process.

Compare ASF with WEBM

Format introduction 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. WebM is a video file format. It is primarily intended to offer a royalty-free alternative to use in the HTML5 video tag. It has a sister project WebP for images. The development of the format is sponsored by Google, and the corresponding software is distributed under a BSD license.
Technical details 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. The WebM container is based on a profile of Matroska. WebM initially supported VP8 video and Vorbis audio streams. In 2013 it was updated to accommodate VP9 video and Opus audio.
File extension .asf .webm
MIME video/x-ms-asf, application/vnd.ms-asf video/webm, audio/webm
Developed by Microsoft Google
Type of format Digital container format video file format
Associated programs Windows Media Player VLC media player, MPlayer, K-Multimedia Player, Mozilla Firefox, Opera, Google Chrome, FFmpeg.
Wiki https://en.wikipedia.org/wiki/Advanced_Systems_Format https://en.wikipedia.org/wiki/WebM