daharoni
commented
3 years ago Hi, This is an interesting issue. Yes the windowScale entry in the user configuration should pretty much only affect how the video stream is displayed to screen. The one exception here is if you draw an ROI on the window to trim the field-of-view to be saved, the windowScale variable becomes involved in converting on screen pixel edges of the drawn ROI to raw image stream pixel locations.
We generally don't test things in too much detail with the V3 but I think we have done quite a bit of testing with this feature with the V4 and never run into issues.
I am glad you have a temporary way to avoid issues currently. When I have time I will look into this and try to track down the issue.
To convince yourself that the windowScale at 0.75 isn't downsampling or improperly scaling the saved data do the following:
- The native resolution of the V3 Miniscope is 752 x 480. If you delete the ROI section in the user configuration file the software should always save the video stream at its full resolution. Do a quick recording and then check the horizontal and vertical pixel count of the saved file.
- You can then also try to add an ROI to trim the FOV by entering it into the user config file (or by drawing one on the window). You can then again record for a few seconds and double check the pixel resolution of the save file.
Let me know if you have any other issues/questions for now.
Mraymon5
We're attempting to transition to using the new software, and we're having a possible compatibility problem with our V3 scopes, specifically regarding saving videos and the windowScale variable in config.
If we attempt to set windowScale to 1 (on our assumption that we want the scale of our window to be 1/1), the scope will connect normally and the live video feed displays perfectly, but any recordings we attempt to save are empty (0kb), or if we use Set Frame to crop the recording area, it will save a video, but with the frame apparently wrapped incorrectly, such that the output is diagonal stripe-y nonsense.
If we set windowScale to 0.75, everything works essentially normally. Based on the comments in the Config, this shouldn't effect the scale of the saved video, which would make this an acceptable solution, but it is kind of perplexing nevertheless.
For what it's worth, we attempted to troubleshoot this with our V4 scope also, and setting windowscale to 1 doesn't seem to cause any problems.
Ultimately, our intent here is to get confirmation that using windowScale = 0.75 on our V3 scopes is a workable solution, and isn't going to inadvertently crop or downsample our recording area?