Recommended specs for exporting videos
We do have a few specifications and guidelines we recommend following in order to obtain the best performance using our service. However, you can upload pretty much any video and it will work well - these are just best practices. In summary, any 720p videos are ideal. Generally 5,000 kbps.
More details for ideal file sizes/specs below:
Resolution: between 640px and 1280px wide
Bitrate: 5,000 - 10,000 kbps
Aspect ratio: Landscape videos are best as portrait videos will not display nicely in most cases. We accept any resolution, though 16:9 works best for courses and landing pages.
Codec: AAC (Advanced Audio Codec)
Sample rate: 44.1mhz
Channels: 2-channel Stereo (not surround)
A little more explanation on why these settings are preferable...
After you upload a video we perform encoding on it, creating multiple versions for different use cases and environments (such as iOS devices), and we also get these versions ready to stream on the web.
We have video-type detection and encoding settings (what we call Smart Encoding) so that live-action videos look great, and longer videos that require fine detail (like webinars) will be as efficient a file-size as possible (for smooth playback).
The largest resolution we create is 720p, or 1280px by 720px. If you upload any video larger than 1280px wide, we're going to create the following derivatives:
|1280px wide HD||2,500 kbps|
|960px wide MD||1,200 kbps|
|640px wide SD||700 kbps|
|HD iPhone (for iPad3)||1,200 kbps|
We recommend uploading video at 1280px wide because it is the most efficient approach - your original files won't be taking up extra space in your account, and your uploading/processing times will be as speedy as possible as well.