Partial Slow Motion (For Audio Only)

Partially apply slow motion to video and audio.
(This app cannot be used with videos without an audio track)

Please specify the frame numbers (Start and End).

Speeds of 1/2, 1/3, and 1/4 are possible; please select the "denominator value" for input.

Speed is normal outside the specified frame range.
For silent videos, please use the "No Audio" version.

🟧 Auxiliary Tool
I have released an app called "Frame Numbering":
https://www.seaart.ai/ja/workFlowAppDetail/d64aqlle878c738n4uag
It overlays large frame numbers on the video, making it easier to determine the position of "from which frame to which frame." While it costs a bit, it is easier and cheaper than redoing the slow motion multiple times.

If you used the "Time Difference Delay App" to add afterimages, specify the start/end points of the frame at that time, and that section will be slowed down (in some cases, it might be off by about one frame😅).

For 1/4 slow motion, it's better to choose as short a section as possible.
Applying 1/4 slow motion to a long section makes the video itself very long, increasing processing time and consumption cost.

If you want to easily increase or decrease the speed of the entire video, this tool might be more cost-effective:
https://www.seaart.ai/ja/workFlowAppDetail/d58j3vde878c73aculeg