Yep learning Torah through movies isn't a good idea. This happens often even with people learning Torah here and their. I had someone in my family argue on a point once by what he saw in the 10 Commandments movie. Its a great movie, but its not accurate. Movies also have a strong and lasting impression upon people especially the visualization so I guess when its not accurate it confusing some people who took and take it as being the representation of the real facts.
I always imagined the Torah being given at night because of the movie. But the Torah was actually given during the day. Also, I remember seeing a clip of the end of the movie on YouTube and its said the Jews wandered in the Desert for 40 years because of the Golden Calf. The real reason is because of the Sin of the Spies.
I've never seen the whole movie. It's really long and when I saw it, I just saw the parts starting with leaving Egypt when it was on TV. I'd like to see the whole thing one time. I guess when I was younger, I didn't have the patience to see the whole long movie. If you know the real Torah account, I don't think watching the movie would be a problem. If you watch the movie at a young age without knowing the real story first, your imagination of how it looked is shaped by the movie. As an adult who studied the real Torah account, there's no problem watching it. On the other hand, modesty issues pose a different problem when watching movies. But if we watch TV shows that have immodest parts, is it any worse? Maybe it would be worse since it's in the name of the Torah that they have immodest scenes.