Bug 477334

Summary: Kdenlive renders video approximately at the halfway point of actual video length
Product: [Applications] kdenlive Reporter: kallamtarun5
Component: Rendering & ExportAssignee: Jean-Baptiste Mardelle <jb>
Status: REPORTED ---    
Severity: minor CC: berndmj
Priority: NOR    
Version First Reported In: 23.08.3   
Target Milestone: ---   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: A screenshot of the timeline and render dialogs.

Description kallamtarun5 2023-11-21 16:11:43 UTC 
SUMMARY
***
NOTE: If you are reporting a crash, please try to attach a backtrace with debug symbols.
See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports
***


STEPS TO REPRODUCE
1.  add a custom preset.
2.  changed preset values:
      ------ Video -------
      Frame rate : 60/1
      Container : matroska
      Codec : libx264
      ------- Audio -------
     Channels : 2 (stereo)
     Sample Rate : 43200
    Codec: libvorbis
3. Save the preset to Lossless/HQ category and click Render to File.

OBSERVED RESULT
Renders approximately half of video

EXPECTED RESULT
Renders full video

SOFTWARE/OS VERSIONS
System:
  Host: ktkr-precision3561 Kernel: 6.6.1-arch1-1 arch: x86_64 bits: 64
    Desktop: Xfce v: 4.18.1 Distro: EndeavourOS
Machine:
  Type: Laptop System: Dell product: Precision 3561 v: N/A
    serial: <superuser required>
  Mobo: Dell model: 03G764 v: A00 serial: <superuser required> UEFI: Dell
    v: 1.14.0 date: 07/04/2022
CPU:
  Info: 8-core model: 11th Gen Intel Core i7-11850H bits: 64 type: MT MCP
    cache: L2: 10 MiB
  Speed (MHz): avg: 817 min/max: 800/4800 cores: 1: 800 2: 800 3: 800 4: 800
    5: 800 6: 800 7: 800 8: 800 9: 800 10: 1074 11: 800 12: 800 13: 800 14: 800
    15: 800 16: 800
Graphics:
  Device-1: Intel TigerLake-H GT1 [UHD Graphics] driver: i915 v: kernel
  Device-2: NVIDIA TU117GLM [T600 Mobile] driver: nvidia v: 545.29.02
  Device-3: Sunplus Innovation Integrated_Webcam_HD driver: uvcvideo
    type: USB
  Display: x11 server: X.Org v: 21.1.9 driver: X: loaded: intel,nvidia
    unloaded: modesetting dri: i965 gpu: i915 resolution: 1920x1080~60Hz
  API: EGL v: 1.5 drivers: iris,nvidia,swrast
    platforms: gbm,x11,surfaceless,device
  API: OpenGL v: 4.6.0 compat-v: 4.5 vendor: intel mesa v: 23.2.1-arch1.2
    renderer: Mesa Intel UHD Graphics (TGL GT1)
  API: Vulkan v: 1.3.269 drivers: nvidia surfaces: xcb,xlib
Audio:
  Device-1: Intel Tiger Lake-H HD Audio driver: snd_hda_intel
  API: ALSA v: k6.6.1-arch1-1 status: kernel-api
  Server-1: PipeWire v: 0.3.85 status: active

Qt Versions: 6 and 5. 

ADDITIONAL INFORMATION
Comment 1 Bernd 2023-11-22 00:32:49 UTC 
(In reply to kallamtarun5 from comment #0)
> 
> OBSERVED RESULT
> Renders approximately half of video
> 

What do you mean? Does the render stop due to a crash? Does the render finish successfully but not the entire project timeline was rendered/exported?
Comment 2 kallamtarun5 2023-11-22 06:20:48 UTC 
(In reply to Bernd from comment #1)
> (In reply to kallamtarun5 from comment #0)
> > 
> > OBSERVED RESULT
> > Renders approximately half of video
> > 
> 
> What do you mean? Does the render stop due to a crash? Does the render
> finish successfully but not the entire project timeline was
> rendered/exported?

It finishes successfully but not the entire project timeline was rendered/exported.
Comment 3 Bernd 2023-11-22 15:11:23 UTC 
(In reply to kallamtarun5 from comment #2)
> (In reply to Bernd from comment #1)
> > (In reply to kallamtarun5 from comment #0)
> > > 
> > > OBSERVED RESULT
> > > Renders approximately half of video
> > > 
> > 
> > What do you mean? Does the render stop due to a crash? Does the render
> > finish successfully but not the entire project timeline was
> > rendered/exported?
> 
> It finishes successfully but not the entire project timeline was
> rendered/exported.

Ok, did you by accident or on purpose define a timeline zone and selected "Selected Zone" in the Render dialog window?
Comment 4 kallamtarun5 2023-11-23 08:35:44 UTC 
(In reply to Bernd from comment #3)
> (In reply to kallamtarun5 from comment #2)
> > (In reply to Bernd from comment #1)
> > > (In reply to kallamtarun5 from comment #0)
> > > > 
> > > > OBSERVED RESULT
> > > > Renders approximately half of video
> > > > 
> > > 
> > > What do you mean? Does the render stop due to a crash? Does the render
> > > finish successfully but not the entire project timeline was
> > > rendered/exported?
> > 
> > It finishes successfully but not the entire project timeline was
> > rendered/exported.
> 
> Ok, did you by accident or on purpose define a timeline zone and selected
> "Selected Zone" in the Render dialog window?

No.
Comment 5 Bernd 2023-11-23 17:26:41 UTC 
Please post screenshots of your timeline and the render dialog window
Comment 6 kallamtarun5 2023-11-24 12:00:02 UTC 
Created attachment 163427 [details]
A screenshot of the timeline and render dialogs.