Home › Forums › PresentationML › Why image/jpeg file extension is changed to .bin after slide copy?
Tagged: PresentationBuilder
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Hi Eric,
In PresentationBuilder::CopyRelatedImage, it calls
var oldPartIdPair = oldContentPart.Parts.FirstOrDefault(p => p.RelationshipId == relId);
I looked into oldPartIdPair, in its OpenXmlPart.Non-Public memebers, TargetFileExtension = “.bin”.
I think this is assigned by OpenXml SDK. Does this mean the bug is in OpenXml SDK instead of in PresentationBuilder. Do you know how long it will take to fix it? I really need to make video working using OpenXml SDK.
Thanks
Are you sure that this is the reason that files are not playable in the PPTX? In general, Open XML does not care what the exact file name is. It only cares what the relationship type is, and what the content type for the part is.
The behavior you see where the file is renamed with extension of .bin, this is functionality in the Open-Xml-Sdk, not Open-Xml-PowerTools.
We need to ascertain with certainty whether the name of the file has significance in PowerPoint. It should not, but who knows what they did inside PowerPoint.
If you determine with certainty that the name of the file causes PowerPoint to not play the video, then you can use System.IO.Compression to open the ZIP and fix the file name.
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