Happy to announce that we've released a new version of AVD for Mozilla Firefox, 220.127.116.11. Now AVD supports more video formats. Due to that a lot of websites starting using new formats of video streaming. We are also try not to retreat and readjust AVD for a new formats. On the website where AVD doesn't have support you will get special notification.
Some websites made online playback easier by splitting full video for amount of small audio and video chunks. That is why while downloading such videos "downloading arrow" will "flash" several times. Video will be downloaded successfully. Each flash of the arrow means that the AVD just forced Firefox to save one chunk which will be merged into full file with help of converter at the end of downloading.