Re: How to check if a thumbnail generated is black?

On Apr 25, 2006, at 5:25 PM, Jordan Rohan wrote:

> Hi - I wrote a program to automatically generate thumbnails from video
> files, but I found that sometimes the thumbnails are black. It  
> seems like
> many Quicktime files have a few frames that are black in the first few
> seconds of the clip. How do you check if a thumbnail generated by  
> ffmeg is
> black (or mostly black)?
>
> Jordan

I would say the best option is to take a thumb from a few seconds  
into the file. That would be easier, imho.

Sean