Is there an example available online to understand the difference between SD & HD? It's not clear if HD is really required.
Is there a sample of each I can see before purchasing?
The SD versions of our videos are optimized for the web, they are the same streaming files that you can view in our online library, and they're of a higher quality than most videos that are rated SD.The HD files are not required by any means, but do provide a better viewing experience with a higher frame rate and better sound quality.
Here's some additional information and a link to download a sample HD file from our FAQ:
What is the difference between the "standard" and "HD" downloads?
The HD is definitely more pleasant to look at and it has a higher sound quality, while the standard version is good enough for picking out the important details and following along. The standard version is optimized for web viewing, but it's still pretty high resolution - particularly for the web - at 960x600.
To further optimize for a speedy download, the sound quality is bumped down to about 64kb (still not bad for the web) and the frame rate is set at 8 frames a second, which makes it look a bit more like anime and less like a soap opera. The HD downloads are about twice the file size, with double the sound quality and a natural, smooth frame rate that tops out at around 30 frames per second. The dimensions also match size of the screen recorded on, 1280x800, which means that if you play it at full size, it will look a lot like your looking right at someone else's screen.
For those of you with mobile devices, the HD videos work well on the iPad 3, but you will need SD videos for the iPad 1 and 2.
Can I see what an High-Definition (HD) Video looks like?
No problem, click here to download a sample High-Definition (HD) video. Note that the HD videos will play on the iPad 3, but you will need a Standard Definition (SD) version for iPad 1 and 2.
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