for 0368 and 0339 I used a real picture and did the video with WAN2.2, so no Grok.

For 0728 I generated the picture with Grok and then used WAN2.2 for the video.

You can see if it's grok generated if you look at the length. Grok videops are 6 sec.

I'm not able to generate 6sec long videos with WAN2.2 only 4-5sec.