NWSailor wrote:I have used OpenOffice Writer and Spreadsheet for many years but have not yet used the Presentation module.
I suggest that you read the Impress Manual before starting as Impress is very different from Writer and Calc.
Impress can easily handle 150 slides - it's 150 large images which is the concern. Be sure to save as a .odp file.
Search the Impress forum with
images for a number of posts about lost images and for hints and tips about how to minimise the risk of losing images.
I have experienced image loss in both LO and AOO Impress with a presentation of about 40 slides with full page images and another 60 smaller images - after using Minimise Presentation the file was about 16 MBytes. It is
very frustrating as it happens randomly - it is OK for ages and then suddenly an image is not there. There seems to be no reason other than AOO and LO don't handle files with many
large images well. You open a perfectly good presentation and find some images are missing, or you scroll up and, while they were there the last time you scrolled, they aren't there now.
It will probably be better if you
link the images rather than embed them. If you lose images, do they re-appear if you close and re-open the file? If not, upload the .odp file so it can be analysed.
Edit: Why do I now think it will be better to use linked images? EDIT - see below - I now don't think that is correct.
1. The .odp file now contains only a link to the image file and not the image file itself. When the linked image is inserted into the presentation and the user sees it, the user knows that the .odp file has the correct information to pull in the image. It is not thought that this "pull-in information" gets corrupted when images are lost.
I think that when an embedded or a linked image goes missing the following happens:
a) The image is pulled into AOO and is stored as a temporary file. Embedded ones come from the .odp file while linked ones come from the folder.
b) The image stored as a temporary file in the temporary folder. The image is displayed using this temporary file.
c) When the image disappears it does so because the temporary file gets lost - it seems to get deleted.
d) When a file is saved the contents of the temporary folder are saved. So, if the file is saved after an image has gone missing, the image will not be stored in the .odp (or .odt) file because there is no temporary image file in the temporary folder.
e) When the file is opened the image is missing because it was not saved in step d). There is no way to get the image back.
Obviously, if a linked image is being displayed at step b) and it goes missing at step d), the image itself will not be deleted as it is still stored on the disk.
2. All images will still be on disk in the folder from which they are called so the images themselves will never be "deleted and lost" as can happen if they are embedded.
I would insert the images in the same folder as the .odp file. Create a folder called, say, Fred, and put the .odp file and the images in Fred.
Following further tests I do not believe that linked images will be any better than embedded images.
The reason is that what gets lost from the file is the address of the image and that address will be lost whether the image is embedded or whether it is linked.
This is the line from the file calling for an embedded image. The next line shows what happens when an embedded image goes missing. A linked image would probably be exactly the same in that its address would similarly be lost.
Code: Select all <draw:image xlink:href="Pictures/1000000000000B20000008582BEE5677.jpg" xlink:type="simple" xlink:show="embed" xlink:actuate="onLoad">
...
<draw:image xlink:href="">
|
Were I to have a presentation of 150 images I would create a PDF from the presentation and present using the PDF to guarantee no embarrassment in front of my audience.
You don't need 4,000+ pixels images. If the projector only has a resolution of, say, 1,500 pixels it is pointless using images with more than 1,500 pixels. AOO has Tools > Minimise Presentation ..., which resamples the images smaller. Either use it after inserting the images (use it frequently while creating the presentation), or reduce the image resolutions as described in the tutorial before inserting them. While creating the presentation think about creating several smaller presentations rather than one large one.
Do not paste JPG files into Impress - they will be saved as enormous PNG files and will bloat the file.
Set Tools > Options > Load/Save > AutoRecovery to OFF. I have experienced image loss (in Writer) at the precise moment at which an AutoSave takes place.
Set Tools > Options > Load/Save > Create Backup to ON. At least you will now have the previous copy of the saved Impress file if you lose images.
If you just want to show photos or other images use IrfanView where File > Slideshow ..., steps through a list of graphic files or through a folder of images.