High Resolution Images Upload

[Kirk Pathumanun]

Hello,

I have couple of questions regarding uploading hi-def images such as medical x-ray or aerial photography. I understand the back-end of the upload document is based on LibreOffice. My question is

1 What is the limitation as far as file size and resolution for BBB would be able to handle by default ?

2 As for implementation would there be any significant development needed beside changing the max upload file size ?

3 Lastly if LibreOffice lack the necessary component to display hi-def imagery, would there be any other possible back-end application to handle this beside Office Libre ?

Regards,

Kirk

[Chad Pilkey]

If you upload a PNG or JPEG image directly the conversion doesn't go through LibreOffice. The SWFTools library that we use has a bunch of different converters and the main ones we use are pdf2swf, jpeg2swf, and png2swf. It doesn't answer the question of how to get a better quality conversion unfortunately. The class that does the PNG conversion can be found here, https://github.com/bigbluebutton/bigbluebutton/blob/bbb-2x-mconf/bbb-common-web/src/main/java/org/bigbluebutton/presentation/imp/Png2SwfPageConverter.java, and it looks like there's a 60s timeout on the command so it might be hitting that and then being downscaled.

[Kirk Pathumanun]

Hello Chad,

Thank you for the tip, at least I got a good starting point on image converter within the BBB source.

Regards,