If you are having trouble uploading large videos, you can use Handbrake (free tool) to reduce them. 

After downloading the application, follow these steps:

Add the video as a source
Select a folder as the output folder
Use format = mp4
Encoder = h.264

Now, you should pick a video quality. We recommend using HQ720p for very HD quality and HQ 576 for reduced video size.

After you finish setting, just click on Start. 

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