How can I make it take the first frame of the title clip and the thumbnail image?
I have a similar issue - I have two clips in my timeline and the S/W makes the first frame in the video that starts second (although it's clip 1) as the thumbnail for the whole video. Even when I do the trick above, and export the first frame and make it the thumbnail, then the HTML version looks fine. But I don't want to produce the HTML version - just straight MP4. And the icon of the underlying .MP4 file still shows the first frame of the second video as the thumbnail.
Wow. I'm having the same problem, and I'm trying to create a very important video for a business startup. Unfortunately, Camtasia seems to be grabbing a random frame - and it was a very unflattering frame with my mouth wide open and eyes closed. I have a still photo at the beginning and the end of the video, yet Camtasia chooses that frame? And I searched help, and all the menus - what the hell is the 'smart thumbnail' ? I don't see anywhere in the product how to set/change this.
I need an mp4 output and can't use the entire contents of the html page generated so I can't swap -- but the hilarious thing is, the _First_Frame.png and the _Thumbnails.png are both showing the correct image for the first frame. So wtf?
I am changing the 'Start thumbnail' option to 'Custom' and adding my own image. When I produce the video, it still shows a random thumbnail for the MP4 file in Windows Explorer. BUT when I copy the file to a server to give to our web team, it shows as the thumbnail I selected. Correct on the server but incorrect on my local machine.
I believe this is to do with the way Windows displays thumbnails. It's pretty annoying as you can't quickly check by looking that the thumbnail is correct. Does anyone know of a way around this?
I wanted to chime in on this because I thought I was having the same problem. I produce to mp4 only all the time and there isn't an option to point to a file/png as the thumbnail.
When the file saves to my computer, it shows a random image from the video. However, when I upload the video to, for example, Dropbox, the correct image from the first slide in the video is showing as the thumbnail. Whew!
So this appears to be a messed up Windows thing in how it displays locally. I hope this helps someone else! I was starting to tear my hair out and trying to solve this.