[BUG] Frame capture tools returns a blank image

[emiliobruno]

Describe the bug
All capture frame tools returns a blank image, except the mosaic tool, with or without draws,pausing or running the videos.
Even the metadata pdf report returns a blank image.Tested with all sample videos.
Cheynne_frame_report.pdf

Thanks,
EB

[All4Gis]

Does the mosaic tool work? Strange. You have opencv installed, right?
Ubuntu and QGIS version?

[emiliobruno]

Hello,
This is my configuration:

Distributor ID: Ubuntu
Description: Ubuntu 20.04 LTS
Release: 20.04
Codename: focal
kernel : 5.4.0-37-generic

QGIS:

In file QgsFvmPlayer.py the function
def SaveAllFrames(self, task, fileName, directory): ''' Extract and save all video frames into directory ''' vidcap = cv2.VideoCapture(fileName)

uses cv2 . This function is working perfectly.

The function :
def ExtractCurrentFrame(self): """ Extract Current Frame Task The drawings are saved by default """ # image = self.videoWidget.currentFrame() # without drawings image = BurnDrawingsImage(self.videoWidget.currentFrame(), self.videoWidget.grab(self.videoWidget.surface.videoRect()).toImage())

uses BurnDrawingsImage function that is in file QgsFmvUtils.py:
defined by
p = QPainter() p.setRenderHint(QPainter.HighQualityAntialiasing) p.begin(base) p.setCompositionMode(QPainter.CompositionMode_SourceOut) p.drawImage(0, 0, overlay) p.end()

I observed that this funcion does not uses cv2 lib

I hope helped you to help me.
Thanks
EB

[emiliobruno]

Any opinion ?

[All4Gis]

I'm sorry, but I don't have time right now. When I can look at this.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.