MrMax Posted April 29, 2013 Share Posted April 29, 2013 Trying to use pixelchecksum to check if something is happening in Adobe Premiere. Problem is that minute changes are screwing the entire thing up, since its a video I am editing there are always fluctuations in the pixels. My question is: How is pixelchecksum calculated and are there different values for different colours? From what I can tell, the larger the area to be scanned is the larger the checksum becomes. Link to comment Share on other sites More sharing options...
Moderators Melba23 Posted April 29, 2013 Moderators Share Posted April 29, 2013 MrMax,I would not recommend using PixelCheckSum on a video for the very reason you state - too sensitive to minor colour variations. As the function is in the core code you would have to ask a Dev for details, but my understanding is that the result is some form of addition of the pixel colour values within the area scanned. I once wrote this UDF to return the average colour of an area - you might want to try it and see if you can use it instead of PixelCheckSum. It returns a 6-char string with the RGB hex values of the average colour - perhaps you could look for a major change in one of these values to trigger your code, while ignoring any minor changes that were within a certain percentage of the initial value. But why not give it a try - and by all means ask again if you need any assistance in getting it to work. M23 Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind Open spoiler to see my UDFs: Spoiler ArrayMultiColSort ---- Sort arrays on multiple columnsChooseFileFolder ---- Single and multiple selections from specified path treeview listingDate_Time_Convert -- Easily convert date/time formats, including the language usedExtMsgBox --------- A highly customisable replacement for MsgBoxGUIExtender -------- Extend and retract multiple sections within a GUIGUIFrame ---------- Subdivide GUIs into many adjustable framesGUIListViewEx ------- Insert, delete, move, drag, sort, edit and colour ListView itemsGUITreeViewEx ------ Check/clear parent and child checkboxes in a TreeViewMarquee ----------- Scrolling tickertape GUIsNoFocusLines ------- Remove the dotted focus lines from buttons, sliders, radios and checkboxesNotify ------------- Small notifications on the edge of the displayScrollbars ----------Automatically sized scrollbars with a single commandStringSize ---------- Automatically size controls to fit textToast -------------- Small GUIs which pop out of the notification area Link to comment Share on other sites More sharing options...
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