Retime Changes End Frame of Clip

Hello everyone and thanks in advance for any help you can provide. I did a search for this issue but nothing came up.

The problem I'm having is that when I change the speed of a clip, the last frame of the clip gets changed. Here's a more detailed description of what I'm seeing

I have two consecutive 4k 30 fps clips, each about 8 min 45 sec long, and 15800 frames before any retime has been applied. I place both clips in the timeline one right after another. When I play the output prior to any retime, I get about 17.5 minutes of smooth video. The seam (not sure what to call it) between the first and second clip is not noticeable. However, that changes after I change the clip speed.

My retime procedure is as follows:

• The first clip, I speed up to 8000%. Then I use the retime curve to slow down the retime at the end of clip 1 to 3000%. So the clip starts out at 8000% and ends at 3000%. I'm using the smooth curve transition option, not the linear option, if that makes any difference.
  
  
• For the second clip I'm speeding it up to 3000% and similarly to the first clip I use the retime curve to slow down the end of the clip to 100%. So it starts at 3000% and ends at 100%. There is an intermediate speed of 1000% if that makes a difference.
  
  
• Then I delete all gaps in the timeline so that the end of clip#1 is snapped to the beginning of clip #2.

The screen shot I've attached shows this final configuration after all the retiming.

The problem I'm seeing is that when I play the timeline there is a noticable jump between clips 1 and 2. Basically, after the retime has been applied the final frame of clip 1 has been changed so much that even at 3000% speed there is a visible jerk or jump.

Is there an option to select or orther workaround that keeps the final frame of the first clip fixed (or close enough to it) so that there is no visible artifact between clips 1 and 2 after the retime has been applied? I have tried changing the speed using both the "Maintain Timing" and "Stretch to Fit" options. Both have yielded the same result.

I'm using Davince Resolve 15.2.3.015 on a Windows 10 machine. I have 32 GB of RAM and a 2GB NVIDIA GeForce 940MX graphics card.

Thanks again and please let me know if I need to provide any additional info or clarifications.

Josh

Have you tried cutting the first clip at the last frame or two and not applying a retime to it?

Have you tried cutting the first clip at the last frame or two and not applying a retime to it?

Eric,

Thanks for the suggestion. I tried your idea but unfotunately it did not work. I clipped 1 frame off the end of clip 1, did not retime it, but retimed the rest as previosuly described. The new clip 1 (1 frame shorter) just had it's new end frame shifted similarly to what was happening before.

Any other thoughts from you or anybody else?

Thanks,

Josh

Try editing the missing frame into the timeline from the original source clip. It worked for me.

Try editing the missing frame into the timeline from the original source clip. It worked for me.

Sorry, I've been away for a few days. Peter, thank you for the suggestion. I am aware that I can edit the missing frames back into the clip, but this sort of manually building a retimed clip becomes very labor intensive when I have 20 some odd clips over an almost 3 hour timeline.

What I'm most interested in trying to figure out is if I'm somehow not using the retime feature correctly and that's what's causing the end frame to change. Maybe there is a setting somewhere I can toggle to keep the start and end frames the same after a retime. In theory, the "Stretch to Fit" option in the Change Clip Speed dialogue should do this, but it doesn't seem to work.

The only practical workaround I've found so far is to add all the clips to the timeline, and then render the video at 100% time as a single clip. Then when I retime the resultant video there are no seams between clips to create this problem. The only issue is that on my underpowered machine it took about 14 hours to render the almost 3 hour 4K video.

Maybe there is a way for me to join all the clips together before rendering so that DR will treat them all as a single clip when I retime. I found the Join Clips command, but that doesn't seem to do anything.

Thanks.

I am also having this issue. I have a clip that I cut the end off, and when I retime the new clip 100% -> 200% the end that I clipped gets re-attached, and I have to find the frame I wanted to cut at again.

I don't understand why it does this. Premiere doesn't do this, is there a setting I'm missing? How has this questions and problem not been answered yet?

Has anyone found a solution for this issue?
I'm experiencing the same issue.
Maintain timing or Stretch to fit has the same result although when increasing the % value in speed, the Duration will adjust in the Change Clip Speed window. When applying the effect, it adds more frames instead...

Thought I'd prop up the thread by saying I am also encountering this problem.

My scenario's rather straightforward; I've got a short video clip (of a longer source video) which I want to slow down, by stretching it, to the same length as a slightly longer audio clip. Of course I want the video clip's end frame to remain the same after the speed change, but after sizing (stretching) the clip using retime controls, the clip's end frame shifts to a frame a little later in the source video. Changing the clip's speed manually (right-click on clip > Change Clip Speed...) does the same thing.

It'll be easy enough to fix manually (I think I'll have to stretch the clip even longer until the end frame I need syncs up with the end of the audio clip, then just cut the rest), but nevertheless I'm really confused as to what's causing the drift.

By the way, I'm using the latest Resolve 17 Windows beta (beta 6, I think: build 18).

Same here. I want to stretch the last 10 frames of a series of clips to cover 19 frames. (An old interview where one of the cameras is off by 19 frames from the sound.)

I would like the last frame of my clip to STAY being the last frame even after stretching it.

Has anyone found a solution for this? It's incredibly tricky to get the retime right without this feature! Very annoying!

Same issue still in 2025 =(
I just posted about this, can't believe people have complained about it for 6 years and nothing's been done to fix such a basic bug.