How to Add a Video Slide to the Carousel
Step 1.- Select a File
You need a .mp4 video that is no longer than 10 secs, no audio and less than 4 MB in file size. You can compress your video by uploading it to vimeo and downloading with a HD 720 resolution or lower.
Step 2.- Change the File Extension
Create a copy of your .mp4 video and save it again with the same name but with a .webm extension
For example: sample.mp4 to sample.webm
Step 3.- Create a Sample.vtt File
Create a sample.vtt file with the video information for screen readers (open sample.vtt in a text editor for details).
Step 4.- Create a Sample.txt File
Create a copy of your .vtt file and save it again with the same name but with a .txt (open sample.txt for details).
Step 5.- Create a Sample.jpg or .png File
Select the first frame of you video and save it as a .jpg or .png. To do so, follow the next steps:
- Open Quicktime.
- Open your .mp4 in full-width (do not play)
- Take a screen shot of your video
- Save it as a jpg or png (only the image)
Step 6.- File Check
Make sure you have the following files:
- sample.jpg or sample.png
Step 7.- Upload to Cascade
In Cascade, upload all your files and fill out all the fields