Building on the earlier suggestion, you should definitely check out Kling AI Free Tier right now! It gives you 66 daily credits for free which is plenty for a few high-quality clips. The motion physics in Kling are absolutely insane because it uses an advanced diffusion transformer architecture. You get 1080p output at 30fps and it looks fantastic on a big screen for a party! Another killer option is Haiper AI Free Plan. They still offer unlimited free generations at 720p for 2-4 second clips. The UI is dead simple so you wont get lost. The rendering speed on their cloud servers is amazing, usually taking under two minutes per generation. Grab a few of these free clips, throw them into a free editor like CapCut Desktop Version and you are good to go! You can totally get this done tonight!

@Reply #2 - good point! Kling is great, but since you are making a tribute video, you are probably gonna want to animate actual photos of your brother. I had a moment to think about this and honestly, you should look at Leonardo.ai Motion Generator. I use their free tier all the time and have no complaints. You get 150 tokens daily, and turning still photos into moving clips is super easy. Another solid choice is Haiper AI Video Generator v2.0. The interface is very clean for beginners, and unlike Runway, you actually get enough free generations to finish a short project without hitting a paywall immediately. Between Luma, Kling, and Leonardo, you easily have enough free tools to stitch together a great 30-second video by tomorrow. Just grab CapCut to edit them together and you are golden.

Free trials unfortunately suck right now. Quick tips:

• Use Luma Labs Dream Machine v1.5 for free generations.
• Put clips together in CapCut. Forget Sora, it isn't public.