I think the formats are free to use. One exception may be BSP, cause of the compiler. 3ds is no problem.
I think it's more the compression algorithms that are patented in eg. MP3, GIF or JPG that may not be exported by your software without a costy license. But selling such files is off course the content owners business.
So don't worry about it.
I think it's more the compression algorithms that are patented in eg. MP3, GIF or JPG that may not be exported by your software without a costy license. But selling such files is off course the content owners business.
So don't worry about it.