I was watching a non-pornographic movie, which I had seen before. In it was a scene that had 4-5 shots of brief nudity and I remembered that it had such a scene. After the first shot of nudity, I rewound it to see the shot again. I did so out of curiosity as to how much was shown, instead of an intent to arouse. After seeing the entire scene I realized I should have just fast-forwarded through it. Believing I committed a venial sin, I have partaken in the Holy Eucharist. Since then I have been second-guessing myself.
Have I committed a mortal sin by viewing what is considered pornography (therefore committing mortal sin by also going to communion), or venial sin by viewing an image that is immodest?