Recent Issue with Sharpen/Unsharp Effect

Help
,
1

I recently performed a system upgrade and after I rebooted I noticed I was getting this error when scrubbing over a portion of my timeline with the Sharp/Unsharp Effect:

Sharp/Unsharp
[filter avfilter.unsharp filter151] Unexpected return format

When I opened Kdenlive using my terminal, I did the same thing and noticed this message that repeated three times in my console output:

[swscaler @ 0x7f9369a02400] Unsupported input (Operation not supported): fmt:yuyv422 csp:bt709 prim:(null) trc:bt709 -> fmt:yuv422p csp:unknown prim:(null) trc:bt709
MLT: "[filter avfilter.unsharp filter151] Cannot get frame from buffer sink"
MLT: "[filter avfilter.unsharp filter151] Unexpected return format"
[swscaler @ 0x7f9369a02400] Unsupported input (Operation not supported): fmt:yuyv422 csp:bt709 prim:(null) trc:bt709 -> fmt:yuv422p csp:unknown prim:(null) trc:bt709
MLT: "[filter avfilter.unsharp filter151] Cannot get frame from buffer sink"
MLT: "[filter avfilter.unsharp filter151] Unexpected return format"
[swscaler @ 0x7f9369a02400] Unsupported input (Operation not supported): fmt:yuyv422 csp:bt709 prim:(null) trc:bt709 -> fmt:yuv422p csp:unknown prim:(null) trc:bt709
MLT: "[filter avfilter.unsharp filter151] Cannot get frame from buffer sink"
MLT: "[filter avfilter.unsharp filter151] Unexpected return format"

I wanted to bring this up to see if there’s any way to resolve it on my end or if this is a bug (known or otherwise). If anyone has any good suggestions on what other filters I could use in the meantime that would also be helpful.

2

Hi, and welcome to the forum and community.

This looks pretty much like a bug to me (most likely a regression in mlt, imho). Please open a bug report - instructions are here. Thanks!

3

What version and build of kdenlive are you using? Can you reproduce this with the Appimage?

If you’re seeing this with a distro build and not the appimage, you’ll need to talk to the distro maintainer about their package dependencies. We can only fix this ourselves if it’s happening with the AppImage or Flatpak packages we create.

4

Hi Ron!

This is version 25.08.2. It is in fact the distro build. Let me try it with the AppImage and see if it persists on there and I’ll come back and edit this comment.

Edit: After loading the AppImage version, the issue does not persist. I’ll go ahead and mark your answer as the solution so we can get this thread closed out. Thank you for notifying me that I should be using the AppImage / Flatpak versus the build on the repository.