Bug 435658

Summary: "2 passes" grayed out in advanced rendering settings
Product: [Applications] kdenlive Reporter: postix <postix>
Component: User Interface & MiscellaneousAssignee: Jean-Baptiste Mardelle <jb>
Status: RESOLVED NOT A BUG    
Severity: normal CC: julius.kuenzel, postix
Priority: NOR Keywords: usability
Version First Reported In: 20.12.3   
Target Milestone: ---   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: Screenshot

Description postix 2021-04-12 14:30:33 UTC
Created attachment 137531 [details]
Screenshot

SUMMARY

For whatever reasons the "2 passes" is grayed out and whatever I choose the checkbox won't activate.
It'd be very helpful if KDEnlive showed a hint, why it's not possible to use it after all. 


SOFTWARE/OS VERSIONS
Operating System: Manjaro Linux
KDE Plasma Version: 5.21.3
KDE Frameworks Version: 5.80.0
Qt Version: 5.15.2
Kernel Version: 5.12.0-1-MANJARO
OS Type: 64-bit
Graphics Platform: X11
melt 6.24.0
Comment 1 Julius Künzel 2021-04-20 14:30:27 UTC
Thanks for your report! The option is only active if the profile supports it (meaning it contains the "passes" option)

f=mp4 movflags=+faststart vcodec=libx264 progressive=1 g=15 bf=2 crf=%quality acodec=aac ab=%audiobitrate+'k' passes

(This is just a example to show what I mean. Haven't test if this configuration works!)

Please check if we can close this report.
Comment 2 postix 2021-04-20 18:53:51 UTC
Thanks, this explains it and if you know it makes sense. However, intuitively I thought one may alter (temporarily) a profile by using the controls. But I see that the idea is to copy a profile first and to alter it in a different dialog. 
Definitely confusing first!

From my side you can close it now. ;)