Bug 505833

Created attachment 182414 [details]
Output of terminal

Created attachment 182415 [details]
thread apply output

Created attachment 182432 [details]
Project_IROD2_with placeholders

I could open the project in 25.04.2 with placeholders.
It must be something with a particular clip or the OS is runnig out of memory.

Difficult to say. It has something to do with audio waveform rendering.
    SDLAudioP2
    PulseHotplug, QPulseAudioEngi
    FrameRenderer
    Thread (pooled)

And Wayland and Python is involved as well.
    WaylandEventThr
    Python Exception <class 'gdb.MemoryError'>: Cannot access memory at address 0x7fffffffbf10

This might be the reason that I can open the project with placeholders.

BTW: Do you use the official flatpack from here: https://flathub.org/apps/org.kde.kdenlive

(In reply to emohr from comment #3)
> Created attachment 182432 [details]
> Project_IROD2_with placeholders
> 
> I could open the project in 25.04.2 with placeholders.
> It must be something with a particular clip or the OS is runnig out of
> memory.

There's no way it's memory. I got 64gb RAM. And while I'm opening the file RAM usage never exceeds 20%.

(In reply to emohr from comment #5)
> BTW: Do you use the official flatpack from here:
> https://flathub.org/apps/org.kde.kdenlive

Yes. org.kde.kdenlive from Flathub.

(In reply to emohr from comment #4)
> Difficult to say. It has something to do with audio waveform rendering.
>     SDLAudioP2
>     PulseHotplug, QPulseAudioEngi
>     FrameRenderer
>     Thread (pooled)
> 
> And Wayland and Python is involved as well.
>     WaylandEventThr
>     Python Exception <class 'gdb.MemoryError'>: Cannot access memory at
> address 0x7fffffffbf10
> 
> This might be the reason that I can open the project with placeholders.

Yesss. It might be related to Wayland. I started a new session over Xorg, tried the flatpak and it crashed too. But I was then able to open the project on 25.04.1 from Manjaro repositories.

(In reply to antimidia from comment #8)
> (In reply to emohr from comment #4)
> > Difficult to say. It has something to do with audio waveform rendering.
> >     SDLAudioP2
> >     PulseHotplug, QPulseAudioEngi
> >     FrameRenderer
> >     Thread (pooled)
> > 
> > And Wayland and Python is involved as well.
> >     WaylandEventThr
> >     Python Exception <class 'gdb.MemoryError'>: Cannot access memory at
> > address 0x7fffffffbf10
> > 
> > This might be the reason that I can open the project with placeholders.
> 
> Yesss. It might be related to Wayland. I started a new session over Xorg,
> tried the flatpak and it crashed too. But I was then able to open the
> project on 25.04.1 from Manjaro repositories.

Oooops. No, my mistake I opened another project by mistake. I'm steel unable to open this project. :(

1. It's not related exclusively to Wayland since it also happens over Xorg.
2. If it is memory related the issue is not physical RAM. Maybe some limitation to the app?
3. It happens both on Manjaro repository and Flathub version.

After renaming two of my footage folders, I was able to open the project using placeholders and then reload all the clips. It's a workaround, not a fix. I'm afraid I'll have to do this again when I close the project.

Which two folders do you have renamed?

I see one path in the crash log:
"/mnt/hdinterno01/Antimídia/Recursos Kdenlive/Efeitos sonoros/Hit Whoosh Dark"

Does the MP3 clip “Hit Whoosh Dark” have any specials? It looks like the clip is not used in the timeline. If so, delete this clip from the project bin and try again.

(In reply to emohr from comment #12)
> Which two folders do you have renamed?

I have renamed:
mnt/hdinterno01/Antimídia/Recursos Kdenlive/Efeitos sonoros/
mnt/hdinterno01/Antimídia/Recursos Kdenlive/Efeitos/
mnt/hdinterno01/Nextcloud/subMedia/Active Projects/Interrebellium/

After renaming these folders I am able to open the project file with Placeholders and then substitute the clips and start working.

If I try to rename only the first two, the app crashes.

Maybe it's related to the big number of files in the bin?

> Does the MP3 clip “Hit Whoosh Dark” have any specials? It looks like the
> clip is not used in the timeline. If so, delete this clip from the project
> bin and try again.

I did remove that clip from the bin and tried to open the file, it crashes. :(

I tried renaming two other folders instead, to see if I could open the project then. 

But it crashed too with (I'll upload the thread apply output in a file):

"MLT: "[producer_xml] failed to load producer \"/mnt/hdinterno01/Nextcloud/subMedia/Active Projects/Its Revolution or Death/Part 1 - Short Term Investments/M's Project/videos/► FREE Video Background Loop Footage _ HD 1080p30 _ Old TV Static Damage Effect #0393 ◄-kWFY9M6jgW4.mp4\""
MLT: "[producer_xml] failed to load producer \"/mnt/hdinterno01/Nextcloud/subMedia/Active Projects/Its Revolution or Death/Part 1 - Short Term Investments/M's Project/videos/＂Here Comes a Thought＂ ｜ Steven Universe ｜ Cartoon Network [dHg50mdODFM].mp4\""
MLT: "[producer_xml] failed to load producer \"/mnt/hdinterno01/Nextcloud/subMedia/Active Projects/Its Revolution or Death/Part 1 - Short Term Investments/M's Project/videos/＂O povo é quem manda... o governo obedece!＂ - Teia dos Povos e Comunidades Tradicionais do MA [oNybOoBTIXM].mkv\""

Thread 1 "kdenlive" received signal SIGSEGV, Segmentation fault.
0x00007ffff42941ca in avformat_find_stream_info () from /app/lib/libavformat.so.61"

Created attachment 182578 [details]
Output of thread apply all bt full

I was able to open the file removing all the audio files I wasn't using on  this folder.

mnt/hdinterno01/Nextcloud/subMedia/Active Projects/Interrebellium/

I saved it and reopened the project without issues. It was something regarding those files apparently.

Thank you for the detailed analysis.
I see files with special character on the file name. Does the folder

mnt/hdinterno01/Nextcloud/subMedia/Active Projects/Interrebellium/ 

contain files with special character like: ► , ｜, !

Yes it does. But so do most of the other folders.


Em ter, 2025-06-24 às 16:31 +0000, emohr escreveu:
> https://bugs.kde.org/show_bug.cgi?id=505833
> 
> --- Comment #17 from emohr <fritzibaby@gmx.net> ---
> Thank you for the detailed analysis.
> I see files with special character on the file name. Does the folder
> 
> mnt/hdinterno01/Nextcloud/subMedia/Active Projects/Interrebellium/ 
> 
> contain files with special character like: ► , ｜, !

I think these special characters in the file name are the root cause of the crash. Specially: ►, ◄, ｜, ..., !

Kdenlive should check if a file contains special character and should suggest for name changes. This is not the case on Windows as there it’s not possible to put such characters into a file name.

Workaround: remove such special character in files names.

Do these characters should affect differently if there's a large number of files with them? Cause since I removed that folder I'm not having any issues with files with those special characters on my project.