Clip thumbnails appear in timeline but not in video

[geoff.downs]

Hi there - n00bie here. I am trying to create a video from a series of images. Everything was going fine until I hit the 21m30s mark. After that point in the timeline, every image I add into the timeline on layer V1:

1. shows up in the timeline as a thumbnail
2. does not appear in the video preview

If I move the image to layer v2, the image appears in the video just fine.
If I move the same image earlier in layer v1, it appears in the video just fine.
If I copy an image from earlier in the layer v1 timeline and place it after the 21m30s mark, the image does not appear in the video.

I imagine I accidentally added or changed something on the V1 layer at this point in the timeline. But I have no idea what I did or how to undo it. Help?

[shotcut]

It might be due to the track filter you have on V1. See the V1 track header. There is an icon that looks like a funnel. Click it and look in the Filters and Keyframes panel.

[geoff.downs]

Thank you! That was the problem. I added a video fade-in and fade-out filter. I meant to add it to a clip but looks like I added it to the track by mistake. Removing the track level filters did the trick.