Bug: Video Gets Cropped Incorrectly After Changing Frame Size
Bug description
When uploading a video and changing the frame/aspect ratio to another preset or custom size, the preview initially looks correct for the original uploaded section. However, after resizing, parts of the video content get unexpectedly cropped in the preview/output.
This makes it difficult to properly frame videos for formats like Reels, TikTok, YouTube Shorts, etc., especially when using portrait ↔ landscape conversions.
The issue seems related to how scaling/cropping is applied after changing dimensions.
Steps to reproduce
- Go to the Reframe editor
- Upload a video
- Change the frame size/aspect ratio (example: Landscape → Reel/TikTok format)
- Use Fit/Fill or custom dimensions
- Observe the preview/output
Expected behavior
The video should maintain proper framing based on the selected mode:
- Fit → entire video visible with letterboxing if needed
- Fill → intentional crop centered correctly
The preview should accurately represent the exported output without unexpected cropping.
Actual behavior
After changing the frame size:
- Parts of the video are cropped unexpectedly
- Preview framing appears inconsistent
- Some visible regions from the original upload disappear after resizing
- Cropping behavior feels different from what the selected mode implies
Browser and OS info
- OS: macOS 14
- Browser: Chrome
- Version: Latest
Possible cause
This may be related to:
- Incorrect FFmpeg scaling/cropping calculations
- Aspect ratio transformation logic
- Preview container CSS (
object-fit, scaling, overflow handling)
- Mismatch between preview rendering and export pipeline
Screenshots/screen recording
Bug: Video Gets Cropped Incorrectly After Changing Frame Size
Bug description
When uploading a video and changing the frame/aspect ratio to another preset or custom size, the preview initially looks correct for the original uploaded section. However, after resizing, parts of the video content get unexpectedly cropped in the preview/output.
This makes it difficult to properly frame videos for formats like Reels, TikTok, YouTube Shorts, etc., especially when using portrait ↔ landscape conversions.
The issue seems related to how scaling/cropping is applied after changing dimensions.
Steps to reproduce
Expected behavior
The video should maintain proper framing based on the selected mode:
The preview should accurately represent the exported output without unexpected cropping.
Actual behavior
After changing the frame size:
Browser and OS info
Possible cause
This may be related to:
object-fit, scaling, overflow handling)Screenshots/screen recording