Avendoo® online documentation

Embed HTML5 videos

If you embed HTML5 videos it is important to upload the video in various formats. This ensures a support by as many browsers as possible. For further information see table.

We recommend the mp4 format for the HTML5 videos. This format is appropriate for all browsers, this means Chrome, Firefox and Internet Explorer (since 11). If there problems with playing the HTML5 video, it is often a problem of the audio codec, for example mp3 instead of aac. In this case convert the HTML5 video into a correct mp4 file with H.264 video code and ACC audio code by converting the HTML5 video via http://video.online-convert.com/convert-to-mp4 online in a mp4 format.

Video support in browsers

Update: May 2015

Container (Codecs)Ogg (Theora+Vorbis) MP4 (H.264+AAC) WebM
internet_explorerInternet Explorer9.09.0 (***)
firefoxFirefox3.5 +(**)4.0 +
chromeChrome3.0 +3.0 +6.0 +
10.5 +24.010.6 +
safariSafari3.1 +
os_ios_darkiOS3.1 +
google_androidAndroid2.3 +3.0 +2.3 +

** Firefox supports MP4 in Windows 7+ (21.0), Windows Vista (22.0), Android (17.0), OS X (34.0) and Firefox OS (1.1)
*** The Internet Explorer 9 supports WebM only, if an additional VP8 Plugin has been installed.

After uploading you can embed the video. Click now in the editor on the button Video video and the dialog window “video settings” opens. First you can insert a placeholder image which will appear instead of the videos, before the user it has started. The width and height represent the size of the placeholder image. Compression and distortion of the image can happen, if the width-heigh-relation will be changed. The sizes are also important for the video. But the video adjusts his size proportionally. Thus the proportions of the video are maximum big as the proportions of the displayed placeholder image.

HTML5 test video

If you can play the video on the left side and you can hear it, your browser is able to play HTML5 videos. This example video has the format mp4.

If you can’t play this video, the message “Your browser doesn’t support HTML5 videos. Please save the file on the hard disk drive.” appears.

Restrictions without HTML5

Users without HTML5 have problems with the following restrictions:

  • No videos with formerly HTML versions available
  • To ensure that videos are seen by all users, they have to be provided for download


Flash: the flash technology enables embedding videos in a browser. Flash isn’t supported by Safari on iOS devices, for example iPhone and iPad.

Advantages of HTML5

  • Videos can be embedded directly into the browser
  • You can upload videos parallel in multiple formats. This ensures a compatibility of all known browsers.
  • Videos don’t have to be downloaded, but can be shown directly in the browser