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SpeedBit Video Accelerator Full

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* Eliminate buffering of
YouTube
  and other web videos
* Watch smooth HD videos with Premium acceleration
* Video Downloader expansion lets you save YouTube videos
WebVideo University Podcast

Independent Review

Video expert Dave Kaminski tested an HD YouTube video on a faster than 20MB connection and it got stuck 25 times,
while with SpeedBit Video Accelerator it played smoothly.
SpeedBit Video Accelerator Review
NEW

HD video acceleration (Premium)

Open up the world of High Definition videos as HD Video Accelerator for YouTube lets you stream HD videos quickly with significantly reduced buffering times. You'll also download all your favorite iTunes content extremely fast. Upgrade now!.

Just install - it will do the rest on its own

All you have to do is install Video Accelerator and enter a new world of watching video over the web. Forget irritating hiccups, picture freezes, and buffering; Video Accelerator configures itself automatically to seamlessly provide you with the best web video experience available.
Download now!.

Now accelerating over 165 video sites

Enjoy accelerated videos from YouTube and 165 sites including: Break, Yahoo Video, Facebook, AOL Video, Dailymotion, MySpace, Metacafe, ABC, CNN, ESPN, msnbc, Veoh, Heavy, and many more!

Suggest a site for acceleration

Ground-breaking technology

Leveraging SpeedBit's unique technology, Free Video Accelerator for YouTube works with your web browser to stream web videos from multiple sources simultaneously allowing for significantly improved download speeds and video playback. Find out more.


  1. What are the different available qualities of YouTube streaming videos?

    YouTube originally offered videos in only one format, but it now has three main formats, as well as a mobile format for viewing on mobile phones. The original format, now labeled Standard Quality, displays videos at a resolution of 320x240 using the Sorenson Spark codec with mono MP3 audio. This was, at the time, the standard for streaming online videos.

    High Quality videos, introduced in March 2008, are shown at 480x360 with mono MP3 sound. They can also be viewed with the H.264 codec and stereo AAC audio by adding &fmt=18 to the end of the video URL. This offers a significant improvement over standard quality. This was followed up in November 2008 by 720p HD support. At the same time, the YouTube player was changed from a 4:3 aspect ratio to widescreen 16:9. This was introduced more than a year behind competing website Vimeo. 720p videos are shown in full 1280x720 and encoded with the H.264 codec. They also feature stereo audio encoded with AAC. From February 2009, all new videos are shown using H.264 and AAC by default for both Standard and High Quality viewing, allowing for higher quality videos at approximately the same file size.

    Source: http://en.wikipedia.org/wiki/YouTube

  2. Can I choose the quality of the video to watch on Youtube?

    YouTube offers videos in several different resolutions. When a High Quality or High Definition version of a video is available, a HQ or HD icon displays in the lower right corner.


    Click on the icon to view the video in the HQ/HD format, and the icon background turns red.



    You can also browse from YouTube's collection of High Definition videos at:
    http://www.youtube.com/browse?s=mphd.

  3. What Internet connection speed do I need for a smooth viewing experience of HQ/HD videos?

    There are two elements that will dictate your viewing experience:

    (a) Effective internet connection speed - This determines your potential data delivery speed and thus your potential viewing experience. This means that if your effective connection speed is lower than the video's bitrate (see table below) then the video cannot possibly play smoothly. On the other hand, an effective connection speed that appears to be sufficient does not guarantee a smooth viewing experience since this is dependant on the video throughput rate.

    (b) Video delivery (throughput) rate - This is the actual flow of data from the video servers to your PC. Think of the video throughput as water flowing to the top of a skyscraper. Having the largest pipes possible at the base of the building does not guarantee a strong flow of water at the top. The flow at the top is limited by the pipes located there and by the tap itself.

    YouTube Standard Video YouTube High Quality video (HQ) YouTube High Definition video (HD)
    Encoding MPEG-4 MPEG-4 MPEG-4
    Aspect Ratio 4:3, 16:9 4:3, 16:9 16:9
    Resolution 320*240 480*360 1280*720
    Bitrate (mbit/sec) 0.5 0.9 2

  4. Is there a difference between the internet connection speed I'm paying for and my effective connection speed?

    Your actual connection speed may be substantially lower than what is advertised by your Internet service provider. This is due to various reasons including:
    - Shared bandwidth, in which the ISP imposes a limit on the aggregate bandwidth allocated to a neighborhood or group of subscribers. This means that at peak hours subscribers will have a much lower bandwidth allocated to them.
    - Bandwidth allocation between several machines or users on the same connection
    - Applications and processes on your computer continuously using up bandwidth, thus reducing your effective speed for watching video.

  5. What controls the video delivery rate?

    The video delivery throughput rate depends largely on the rate in which the video is streamed from the server and on the barriers between the server and the destination computer. Actual throughput will drop with the physical distance between the source server and the destination computer. Busy servers and/or congested areas along the way will result in a further drop in throughput.

  6. How can I see that the video is being accelerated?

    Each time SpeedBit Video Accelerator improves the performance of a YouTube style video, a Now Accelerating message appears from your desktop tray to let you know it is working. Additionally, you can look at the YouTube video progress bar and see that the video is being loaded in rapid chunks, taking leaps forward instead of gradual and slow progress.

    Here you can see a side by side comparison of a video loading regularly, and a video that is playing smoothly thanks to Video Accelerator.

  7. Complementing YouTube's video delivery

    The Internet protocol is very limited in its ability to deliver video efficiently. The quality of the delivery deteriorates due to physical distance, congested areas along the way, busy servers, and other reasons. YouTube is making great efforts to overcome those limitations, and Speedbit Video Accelerator works hand in hand with those efforts to provide the missing link to enjoying the best possible viewing experience. Only Speedbit Video Accelerator with its patented and award winning technology can acquire the video using multi threads and other sophisticated algorithms. Video Accelerator fully utilizes the available bandwidth and overcomes congested areas, busy servers, and last mile issues. It provides the best user experience for watching YouTube videos, and even "long tail" videos that are hosted only on the YouTube backbone.

Download here

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