gpfup-limit-aspect-ratio-of-mp4-mov-files.js: Added snippet to limit Aspect Ratio of uploaded video files.

gp-file-upload-pro/gpfup-limit-aspect-ratio-of-mp4-mov-files.js

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+/**
+ * Gravity Perks // File Upload Pro // Limit Aspect Ratio of MP4/MOV Files
+ * https://gravitywiz.com/documentation/gravity-forms-file-upload-pro/
+ *
+ * Experimental Snippet 🧪
+ *
+ * Instruction Video: https://www.loom.com/share/b05a322bbf204e49b23ae366a123be96
+ *
+ * Instructions:
+ *   1. Install our free Custom Javascript for Gravity Forms plugin.
+ *      Download the plugin here: https://gravitywiz.com/gravity-forms-code-chest/
+ *   2. Copy and paste the snippet into the editor of the Custom Javascript for Gravity Forms plugin.
+ */
+window.gform.addAction('gpfup_before_upload', (formId, fieldId, file, up, gpfupInstance) => {
+	// Update "4:3" to the desired video aspect ratio.
+	const targetAspectRatio = '4:3';
+
+	const [width, height] = targetAspectRatio.split(':').map(Number);
+	const numericalAspectRatio = width / height;
+
+	const videoMimeTypes = ['video/mp4', 'video/quicktime'];
+
+	if (videoMimeTypes.indexOf(file.type) !== -1) {
+		var fileURL = URL.createObjectURL(file.getNative());
+		var vid = document.createElement('video');
+		vid.src = fileURL;
+
+		// check the video aspect ratio
+		vid.onloadedmetadata = function () {
+			const aspectRatio = this.videoWidth / this.videoHeight;
+
+			if (numericalAspectRatio != aspectRatio) {
+				gpfupInstance.handleFileError(up, file, {
+					code: 'does_not_meet_aspect_ratio',
+					message: `Video duration must be of ${targetAspectRatio} aspect ratio.`,
+				});
+			}	
+		};
+	}
+});