Create a thumbnail from a video os reuse an existing thumbnail

ReusableThumbnail.cs

        #region VideoThumbFlow
        /// <summary>
        /// Must be called upon instantiating this prefab
        /// </summary>
        /// <param name="preview">The video related to the ID</param>
        /// <param name="id">The index on hte GalleryData for the content</param>
        /// <param name="title">Short description or name</param>
        private void InitializeVideo(String videoUrl, int id, string title)
        {
            gameObject.SetActive(true);
            var _videoPlayer = GetComponent<VideoPlayer>();
            _id = id;
            GetComponentInChildren<TMP_Text>().text = title;

            _videoPlayer.url = videoUrl;
            string pathThumb = Application.streamingAssetsPath +"/Thumbs/"+GetComponentInChildren<TMP_Text>().text+".jpg";
            if (File.Exists(pathThumb))
            {
                Texture2D media;

                //save texture2d
                byte[] bytes = File.ReadAllBytes(pathThumb);
                media = new Texture2D(1, 1);
                media.LoadImage(bytes);
                targetImagePreview.texture = media;
                
                
                Debug.Log("Load thumb from cache " + targetImagePreview);
                targetImagePreview.texture = media;//Sprite.Create(media,new Rect(0, 0, media.width, media.height),Vector2.zero);
                RenderTexture.active = null;
                
                float aspect;
                aspect = media.width / (float)media.height;

                var asp = GetComponentInChildren<AspectRatioFitter>();
                asp.aspectRatio = aspect;
            }
            else
            {
                _videoPlayer.prepareCompleted += VideoPlayerOnprepareCompleted;

                _videoPlayer.Prepare();
            }
            
        }

        private void VideoPlayerOnprepareCompleted(VideoPlayer source)
        {
            source.prepareCompleted -= VideoPlayerOnprepareCompleted;
            source.frameReady += VideoPlayerOnframeReady;
            source.sendFrameReadyEvents = true;
            source.seekCompleted += VideoPlayerOnseekCompleted;
            var middleFrame = (int) (source.frameCount / 2);
            if (middleFrame > 0) source.frame = middleFrame;
            // source.frame =  (long)source.frameCount - 1;
        }

        private void VideoPlayerOnseekCompleted(VideoPlayer source)
        {
            source.seekCompleted -= VideoPlayerOnseekCompleted;
            source.frameReady += VideoPlayerOnframeReady;
            source.Play();
        }

        private void VideoPlayerOnframeReady(VideoPlayer source, long frameidx)
        {
            source.frameReady -= VideoPlayerOnframeReady;
            source.Pause();
            source.sendFrameReadyEvents = false;
            ExtractVideoPreview(source);
            Destroy(source);
        }

        void ExtractVideoPreview(VideoPlayer source) {
            RenderTexture renderTexture = source.texture as RenderTexture;
            if (renderTexture == null) return; //IDK why, but this may happen sometimes
            var media = new Texture2D(renderTexture.width, renderTexture.height);
            RenderTexture.active = renderTexture;
            media.ReadPixels(new Rect(0, 0, renderTexture.width, renderTexture.height), 0, 0);
            media.Apply();
            Debug.Log("targetImagePreview is " + targetImagePreview);
            targetImagePreview.texture = media;//Sprite.Create(media,new Rect(0, 0, media.width, media.height),Vector2.zero);
            RenderTexture.active = null;
            
            string pathThumb = Application.streamingAssetsPath +"/Thumbs/"+GetComponentInChildren<TMP_Text>().text+".jpg";
            //check if folder exists or create it
            if (!Directory.Exists(Application.streamingAssetsPath + "/Thumbs"))
            {
                Directory.CreateDirectory(Application.streamingAssetsPath + "/Thumbs");
            }
            using (FileStream targetFile = File.Open(pathThumb, FileMode.OpenOrCreate))
            {
                //save texture2d
                byte[] bytes = media.EncodeToJPG();
                targetFile.Write(bytes, 0, bytes.Length);
            }
            float aspect;
            aspect = media.width / (float)media.height;

            var asp = GetComponentInChildren<AspectRatioFitter>();
            asp.aspectRatio = aspect;
        }
        
        #endregion VideoThumbFlow