Hi
I am under Aspose.Slides 21.11 x86 and have “outofmemoryexception” and “gdi+” exceptions for presentations over 300mo up to 1.7go under windows 10 x64.
How to fix that ? is there Aspose.Slides x64 version ?
Thank you so much
@kokilol,
Welcome to our community! Thank you for posting the inquiry.
To investigate this case on our side, please share/specify the following:
- code example or a simple project that reproduces the exceptions
- presentation files
You can switch to x64 version in project settings.
Hello again
First of all, here is the code used for opening and generating thumbnails, is there anything incorrect ?
I am using aspose.slides x86 version on windows 10 64bits.
Presentation file weights over 700mo.
Thanks for your help
try
{
using (var stream = new FileStream(pptpath, FileMode.Open))
{
presentation = new Presentation(stream, new LoadOptions()
{
BlobManagementOptions = new BlobManagementOptions()
{
IsTemporaryFilesAllowed = true,
MaxBlobsBytesInMemory = 50 * 1024 * 1024 // 50 MB
}
});
//export img
if (presentation != null && presentation.Slides.Count > 0)
{
for (int i = 0; i < presentation.Slides.Count; i++)
{
Slide s = (Slide)presentation.Slides[i];
if (!s.Hidden)
{
try
{
Bitmap bmp = s.GetThumbnail(scaleX, scaleY);
bmp.Save(thumbspath + @"\Slide" + (i + 1).ToString("0000") + ".jpg", System.Drawing.Imaging.ImageFormat.Jpeg);
bmp.Dispose();
bmp = null;
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
}
}
}
}
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
}
@kokilol,
Thank you for the code example. It will take me a while to answer. We will reply to you as soon as possible.
@kokilol,
Your code example for generating thumbnails looks correct. For opening large presentations, you should also use BlobManagementOptions.PresentationLockingBehavior property as shown below:
LoadOptions loadOptions = new LoadOptions
{
BlobManagementOptions = new BlobManagementOptions
{
//...
PresentationLockingBehavior = PresentationLockingBehavior.KeepLocked,
//...
}
};
Documents:
Open Large Presentation
Load a Large Presentation as BLOB
Frequently Asked Questions
Please read the following article to get instructions for configuring the target platform:
Hi i will try this in real conditions and let you know. Thank you
Hi
I tried with 1.7go PowerPoint and this worked beautifully, this is huge !
So many thanks Andrey
Are you working on keynote support ? 
Bye thanks
Hi i will try this in real conditions and let you know. Thank you
@kokilol,
Unfortunately, Aspose.Slides does not support the format of presentations for Keynote application by Apple. I linked this forum thread to the appropriate task with ID SLIDESNET-25966 in our issue tracking system. But as far as I can see there are no immediate plans to support this format. You will be notified when the issue is resolved.
Hi Andrei how are you ?
What best value do you recommend as “MaxBlobsBytesInMemory” for powerpoint file up to 6Go and average with few 100Mo ? (default:50Mo)
considering that dozens of powerpoint file will be converted simultaneously.
Thanks
@kokilol,
I’m fine, thanks. Unfortunately, I don’t have information for your request. You should test your results using various values for this parameter to find out the best one for your environment and use cases.
Hi
Alright thanks
And is there a possible way to have it working on keynote ?
@kokilol,
I’m not sure I understood your question. Could you please describe your requirements in more detail?
Is this scheduled to have an aspose.slides version working for keynote ? (Export slides to pictures)
@kokilol,
Unfortunately, as far as I can see, there are no plans for supporting Apple Keynote format in Aspose.Slides.
Thanks.
Do you think that technically possible or perfectly uncompliant ?
@kokilol,
Adding support for Apple Keynote file format is a really huge task. Besides, there is no open free specification for this format. There are also some technical issues with implementing such support in Aspose.Slides.
So that’s possible but quite long work.