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 Load image + video in ImageEnMView
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aleatprog

68 Posts

Posted - Jul 05 2021 :  09:47:05  Show Profile  Reply
Hi,

I need to load images & videos from a folder (e.g. JPG, GIF, PDF, MP4). The files don't have an extension.

As I need only one thumbnail per file, currently I use the following functions:

//in case of PDF
ImageEnMView.PdfViewer.LoadFromFile(Path);
ImageEnMView.AppendImageEx(ImageEnView.IEBitmap);
ImageEnMView.PdfViewer.Close;

//in all other cases (images + videos)
ImageEnMView.AppendImage(Path + IEM_Path_Index_Delimiter);


Problem: With the above code, images are loaded rapidly, but the loading of videos is extremely slow.

Question: Is there a more appropriate way to get one thumbnail per file for PDF, images, multiframe images and videos?

Al

xequte

6248 Posts

Posted - Jul 05 2021 :  20:57:23  Show Profile  Reply
Hi Al

You shouldn't need the special PDF handling code you use above, as ImageEn should do that behind the scenes (when loading as a normal image).

The quickest way to get thumbnails for video files is to get it from Windows Explorer:

https://www.imageen.com/help/WindowsGetExplorerThumbnail.html


Also, ensure you also use OptimizeLoadingParams to get the fastest loading method for your thumbnails:

https://www.imageen.com/help/TIOParams.OptimizeLoadingParams.html

This demo may help:
Demos\Multi\MViewPerformance\Performance.dpr
https://www.imageen.com/files/demos/run/Multi/MViewPerformance/Performance.exe

Nigel
Xequte Software
www.imageen.com
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aleatprog

68 Posts

Posted - Jul 13 2021 :  10:24:01  Show Profile  Reply
Hi Nigel,

I tried WindowsGetExplorerThumbnail but maybe due to the fact that the video files got no extension, loading is equally slow and even worse as it delivers ImageEnMView "broken link" icons instead of thumbnails for some video formats. Meanwhile ImageEnMView.AppendImage(Path + IEM_Path_Index_Delimiter) works perfect with standard formats like avi, mov, mp4, mpg, ogg, webm, wmv.

I confirm that ImageEnMView.AppendImage(Path + IEM_Path_Index_Delimiter) works also for PDF.

Thank you,
Al
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xequte

6248 Posts

Posted - Jul 13 2021 :  17:49:43  Show Profile  Reply
Hi Al

Thanks for the feedback. Glad to hear you have found a good solution.

Nigel
Xequte Software
www.imageen.com
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