Can't transitions be applied to PNG sequences?

Hello , I have a few PNG sequences and a few MP4 sequences. I can use transition on the MP4, but not on the PNG sequences. Does this perhaps have something to do with the fact that Fusion 2 render passes (Reflection and Glosy) are attached to the PNGs?

You have sufficient handles?

No, there are no handles in the PNG sequences, but there are handles in the MP4s

You have sufficient handles?

By this, Jim means do you have enough extra footage at the end or beginning of the video clips for the transition?

For example, if you're transitioning from a video clip to the PNG using a 1-second fade, you'll need a half-second of "extra" footage beyond the end of the video clip because the transition is still fading out of the video after it ends and into the first half-second of the PNG. This means you have to trim back the end of the video clip at least a half second from it's "real", hard end point.

The "extra" footage that's available beyond the point where you trimmed the start or end of a clip is known as a "handle". Handles apply to video clips, they don't really apply to still images since Resolve can add as many extra still frame copies as it needs for a transition.

Ahh thanks for the clarification. No, I didn't, but the transition is a fade in fade out, doesn't actually require any additional material. Or am I seeing that wrong?

If it's a single transition between clips, then it actually does require "extra" content.

Or you are trying to add one to the beginning or end of a clip, rather than between them?

Ok I understand . That would also explain why the autotrim function exists. Unfortunately there isn't much left with a 2 second render. But thanks for the information, now I know that I should always render 1 second longer in order to have half a second of material left at the front and back.

SOP on a film set is to have at least five seconds of footage before calling "action".

Ahh thanks for the clarification. No, I didn't, but the transition is a fade in fade out, doesn't actually require any additional material. Or am I seeing that wrong?

Are you talking about a fade to black at the very end of the video with nothing following, or a cross fade from the current clip to the one following?

For a cross fade, the cut point that's shown in the video editor is normally at the halfway point of the fade. So for a 1-second fade at 30fps, the cut point would be 15 frames into the fade, where both the previous and next clips are equally blended. But you need another 15 frames beyond that during which the previous clip will be further faded out from 50% to 0% as the following clip is faded in to the 100% level. Therefore, you need at least 15 frames of "handle" at the end of the clip.

Ok I understand . That would also explain why the autotrim function exists. Unfortunately there isn't much left with a 2 second render. But thanks for the information, now I know that I should always render 1 second longer in order to have half a second of material left at the front and back.

I always tell people that you can't really master shooting video without also spending time editing it. And this is one of the first lessons. I generally try to shoot at least 5 seconds of extra video at the start and end of each clip, not only to allow for transitions but also to give me more flexibility to move the cut points around as seems best for pacing or to match beats in the backing music. It's really hard while shooting to anticipate what will work best when you start to combine everything together.

Sorry for the late reply, at the moment nothing is working. Even purchasing DRS is not easy without PayPal.
Be that as it may, you are of course right that you should always have a few seconds before and after the clip, especially for transition and to be able to hit the right beat in the sound. I only work with 3D rendering, so every second is expensive to render.
I've been playing around with the transition and I'm getting to grips with it a little better now.
Thank you for the detailed explanations.

Even purchasing DRS is not easy withoutI only work with 3D rendering, so every second is expensive to render.

Once you get Studio, you may want to try and render only every other frame and stretch with optical flow. It’s done a lot when deadlines get tight.