I'm building an app in Grails, but I am well versed in Java also. I need to display thumbnails of video files, and then when the user clicks on a thumbnail, open that video in a player. (Like Youtube).
What I am thinking is, when the user posts the video, I'll use xuggler to grab a thumbnail, and save that along with the video file itself.
Question 1: Is that a good design?
I am not familiar with xuggler.
Question 2: Is there some way to grab a thumbnail from input stream as the user is uploading? Otherwise, I am going to write the file, and then grab the thumbnail from that as described here.
Xuggler seems like the way to go.
I'm doing something similar at the moment. I'm opting to download the entire file payload before attempting to assume I was given a video.
I've built a similar system in PHP and users submitting Windows Movie Maker project files was a real issue.
application/octet-stream was a very common content-type from machines that didn't know file type associations