Screen capture image format

hi there,
after i installed Adobe Acrobat, I got .pdf image when I use "commandshift3(4)" to capture the screen.
How can I set up it to get .jpg format image as I did before.

You can change it in the Terminal, but for those of us who like GUI's I've used Tinkertool to change this format.
Oh... I've just noticed Tinkertool says it only supports this function in 10.1 or 10.4 not 10.2 or 10.3. Even these other two only work under 10.4 apparently... so you'll have to go for the Terminal route. Type in one of the following to the Terminal and hit return:
defaults write com.apple.screencapture type pdf
defaults write com.apple.screencapture type png
defaults write com.apple.screencapture type jpg
defaults write com.apple.screencapture type tif
defaults write com.apple.screencapture type psd
mrtotes

Similar Messages

Changing Screen Capture Default Format

I'm trying to change the default format of the screen capture created by shift-command-4 from PDF to PNG. I set the string in com.apple.screencapture to png, but it doesn't seem to be "sticking". Any ideas?

Maybe I should specify what I'm looking for, sorry. In another experiment in customization, when I tried to rename my Trash, I found that the new name I put in the Property List wouldn't "stick" unless I executed "killall Dock" in the Terminal to restart the dock.
I'm trying to find out what I should restart to have my screencapture format change "stick". Unless maybe that is totally off track?!

Screen Capture default format in Tiger OS

Dear Mac OS Fellows:
In Tiger OS, the default file format for screen capture is "PNG." I want to change it to "PDF"!
I found the command tips, never worked for me, on the net=>
defaults write com.apple.screencapture type pdf
killall -HUP SystemUIServer
I tried those 2 commands. The default format is stil set to "PNG."
Help please!
Max NY

Max--
The reason why I try to capture screens with "PDF"
export, is that I want to preserve the "vector"
attribute of the type.
To no avail! After saving capture as a PDF, I zoom in
400% to check on the edge of the type. Disappointing
enough! All become pixelated!
Hmm. This may not be possible. The way I understand it, the screen is a bitmap, rendered by the OS. So, yes you can get a PDF of the screen, but it's just a bitmap in a PDF. That would be the same for any kind of application's windows where the text was drawn on screen, like a dialog box.
The only standard tool I know of is the "Web Capture"
in Acrobat Pro. v.7.
Well, if you're interested in web pages, you can always just use "Print," but instead of printing, save your web page to a PDF from the print dialog. But, since you're "printing," you may find the printout isn't exactly like the web page. Especially if they use a different style sheet for print media.
You can use this same trick with other applications, too, as long as they can print (and as long as they don't "rasterize," i.e., make bitmaps of, the type in their documents before they send them to the printer).
I've never heard of a tool that could do what you want with any window. I think one would have to intercept the commands going to the graphics system before they actually get rendered for the screen, and I'm not sure that's possible.
charlie

Screen Capture File Format

Does anyone know a way to change the default file format in the Mac OS screen capture utility to a different format other than PNG? Thanks.

cbenham wrote:
Does anyone know a way to change the default file format in the Mac OS screen capture utility to a different format other than PNG? Thanks.
There are two default screen capture mechanisms in Leopard:
The direct ⌘ shortcut, and the application, grab.
I presume you are referring to the ⌘ shortcuts since the default for grab is tiff
⌘-Shift-3 = Screen
⌘-Shift-4 = Selection
⌘-Shift-4 + Spacebar = Window
To change the format, in a terminal enter
defaults write com.apple.screencapture type image_format
where "image_format" can be
tiff
jpg
pdf
and possibly others.
When using the terminal, you are on your own and if you are unfamiliar with it, be very careful.
Message was edited by: nerowolfe

Screen Capture (file format) used to be pdf

Is there a way to change the default file format for a screen capture. The file format in OS 10.3 used to capture as a PDF. Now the format is PNG. I know you can open the file in preview and resave it.
I just want to see if there is someway to change preferences or something so it will default as a pdf file.
thanks

Hi, amantia and costicladop —
amantia, welcome to Apple Discussions!
There are various options to accomplish your objective.
OnyX 1.6.5 (a free utility) and Cocktail 3.6.5 ($14.95 shareware utility) offer the option to change graphic file format with a "single click" — in OnyX »» Appearance »» Screen Capture and Cocktail »» Interface »» Misc. »» Screenshot file format, respectively.
They're both just implementing Terminal commands — which provide another option.
bmp, gif, jpg, jpg-2000, pdf, photoshop, pict, png, sgi, tga, and tiff options are available in both utilities.
Hope this helps . . .
Regards,
Dean
p.s. costicladop — following your link engages an automatic download. (Duh.) Wanting to read something first, I went to http://www.arenasoftware.com/ — which forwards to http://www.digitalarena.co.nz/. The software page on that site only mentions three software products, none of which is shotChoice. Could you provide a descriptive link? Thanks!

Is screen capture image making possible?

We need to do a screen capture and store the image. Is that possible to do?
In regular Java, screen capture is possible with the com.sun.image.codec.jpeg.JPEGImageEncoder, java.io.File and java.io.FileOutputStream.
These are not available in J2ME. Would screen capture still be possible, and if so, how could it be implemented?

Likely the only way to do that is by accessing directly the WinAPI. However doing efficient screen capture through WinAPI is not as easy as calling a single Windows API function. It is quite a bit more involved and the code needs to be able to handle various bit depths in order to work in various screen resolution setting.
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

[SOLVED] v4l emulated capture image formats missing

I'm trying to get my Webcam working with OpenCV on Archlinux. The Webcam is working through uvcvideo and OpenCV trys to access it through v4l requiring it to provide BGR24. The webcam itself only supports YUYV and MJPG and v4l should usually emulate the missing BGR24. This works perfect on lubuntu 64bit but on Archlinux 64bit the emulated formats are missing and therefore OpenCV cannot use the webcam.
Archlinux 64bit:
lubuntu 64bit:
Does anyone know why this is happening on archlinux?
Any help would be greatly appreciated!
SOLUTION: Turned out that Sundteks driver for a DVB USB Stick preloads libmediaclient.so for all programs what stuffs up v4l. I just removed the general preload and added it where necessary.
Last edited by bluber (2013-10-11 17:58:54)

hadrons123 wrote:
Sorry my bad
its
pacman -S librsvg
themusicalduck wrote:That did it. Thanks!
I had the same problem and nemo/nautilus was crashing in a segfault few seconds after starting, now all works fine, thanks! :-)

Since Firefox 6.0 copying images, by either Win 7 fxn or by screen capture fxn's, no longer works

-- At least, this is the way it seems... a letter I wrote first to the VMN Toobox staff (and to Firefox)...
Hi VMN Staff/Inventor – and Hi to my favorite browser’s staff at Firefox,
I must say that I really love your Screen Capture fxn for the VMN Toobox 4.25! I use it ALL of the time! Hopefully, I have sent you some money already. Tonight however something is really wrong! When I fired up the computer this afternoon and, as usual, was doing research for my office, some webpage logos wouldn't copy, so as usual I dropped down the VMN Toolbox selections, selected Screen Capture and arranged the capture bars over the image, got the yellow flash-across the selected area and pasted the picture in to the document. I looked and looked, reshot the image several times but unbelievably … THE SCREEN CAPTURE IMAGE on the document WAS BLANK!
This NEVER occurred before. And, even after restarting the computer it still did not work.
Then I happened to be in a document where VMN screen capture images had been added - they were ALL blank! Checking other documents - all screenshot images in all documents are blank, totally whited out, with the black lines of where the images used to be right there, emphasizing that something is gone. Like a painting stolen from a museum wall and the photon shadow is all that remains.
I had not used Awesome Screenshot for quite a while, but there it was up on my toolbar - tried that - same damn thing! What's going on? I am pretty certain I let Mozilla FireFox go ahead and update from v5.x to v6.0 as soon as I signed on, and several add-ons were suddenly "no longer compatible," but as far as I can tell your software doesn't rely on any plug-ins. The Awesome Screenshot extension add-on for Firefox was still enabled, yet it did not work.
Further troubleshooting - as I was at my desktop on the network in the office, I then fired up my laptop. This time I DID NOT allow Mozilla Firefox to update from v5.x to 6.0. The VMN toolbox screenshot worked fine! Uh, oh Firefox…?
So, I will be sending this message to Firefox also - I detest Microsoft, only use their software at all only because I HAVE to, I almost never use IE v8.x or 9.x or wherever it is now - but can your people at VMN (and y'all at Firefox) explain how the only browser I use, Firefox, could possibly reach in to my documents file and cause the screenshots downloaded to the clipboard, then to documents, to suddenly no longer be able to be seen? Is this even possible?
Lastly, maybe you know something about this - is there any way to actually "see" the clipboard - what's on it at any given time? I cannot find any way to access either file names or images existing on the clipboard no matter how much is on it, or what program I'm using. (An IT level/web developer person I am not, just a physician.)
I have Windows 7 Professional on my desktop, 4GB RAM, the network/server can only use a 32-bit system type, and everything is highly maintenanced by myself and our IT team, so absolutely everything else is fine. On my laptop I have a Windows 7 Home Premium OS installed and working fine on a brand new HP Pavilion g4 Notebook PC w/ 4GB RAM, 64-bit system type.
Any time to send me any ideas? Thanks. And you too, Firefox - what's going on?
Thank you very much,
Robert Schmidt, D.O.
Woodlands Healing Research Center 5724 Clymer Rd. Quakertown, PA 18951 [email protected] and [email protected] ph: 215-536-1890 fx: 215-529-9034 cell: 267-221-1818

-- At least, this is the way it seems... a letter I wrote first to the VMN Toobox staff (and to Firefox)...
Hi VMN Staff/Inventor – and Hi to my favorite browser’s staff at Firefox,
I must say that I really love your Screen Capture fxn for the VMN Toobox 4.25! I use it ALL of the time! Hopefully, I have sent you some money already. Tonight however something is really wrong! When I fired up the computer this afternoon and, as usual, was doing research for my office, some webpage logos wouldn't copy, so as usual I dropped down the VMN Toolbox selections, selected Screen Capture and arranged the capture bars over the image, got the yellow flash-across the selected area and pasted the picture in to the document. I looked and looked, reshot the image several times but unbelievably … THE SCREEN CAPTURE IMAGE on the document WAS BLANK!
This NEVER occurred before. And, even after restarting the computer it still did not work.
Then I happened to be in a document where VMN screen capture images had been added - they were ALL blank! Checking other documents - all screenshot images in all documents are blank, totally whited out, with the black lines of where the images used to be right there, emphasizing that something is gone. Like a painting stolen from a museum wall and the photon shadow is all that remains.
I had not used Awesome Screenshot for quite a while, but there it was up on my toolbar - tried that - same damn thing! What's going on? I am pretty certain I let Mozilla FireFox go ahead and update from v5.x to v6.0 as soon as I signed on, and several add-ons were suddenly "no longer compatible," but as far as I can tell your software doesn't rely on any plug-ins. The Awesome Screenshot extension add-on for Firefox was still enabled, yet it did not work.
Further troubleshooting - as I was at my desktop on the network in the office, I then fired up my laptop. This time I DID NOT allow Mozilla Firefox to update from v5.x to 6.0. The VMN toolbox screenshot worked fine! Uh, oh Firefox…?
So, I will be sending this message to Firefox also - I detest Microsoft, only use their software at all only because I HAVE to, I almost never use IE v8.x or 9.x or wherever it is now - but can your people at VMN (and y'all at Firefox) explain how the only browser I use, Firefox, could possibly reach in to my documents file and cause the screenshots downloaded to the clipboard, then to documents, to suddenly no longer be able to be seen? Is this even possible?
Lastly, maybe you know something about this - is there any way to actually "see" the clipboard - what's on it at any given time? I cannot find any way to access either file names or images existing on the clipboard no matter how much is on it, or what program I'm using. (An IT level/web developer person I am not, just a physician.)
I have Windows 7 Professional on my desktop, 4GB RAM, the network/server can only use a 32-bit system type, and everything is highly maintenanced by myself and our IT team, so absolutely everything else is fine. On my laptop I have a Windows 7 Home Premium OS installed and working fine on a brand new HP Pavilion g4 Notebook PC w/ 4GB RAM, 64-bit system type.
Any time to send me any ideas? Thanks. And you too, Firefox - what's going on?
Thank you very much,
Robert Schmidt, D.O.
Woodlands Healing Research Center 5724 Clymer Rd. Quakertown, PA 18951 [email protected] and [email protected] ph: 215-536-1890 fx: 215-529-9034 cell: 267-221-1818

Screen Captures Exposed

This thread attempts to tackle the issue of screen captures in FrameMaker.
Please post questions about screen captures to the FrameMaker forum outside the FAQ thread using Add Topic. http://www.adobeforums.com/cgi-bin/webx?14@@.ee6b312
Please, post corrections and suggestions to the FAQ Corrections and Suggestions thread:
DorothyK "FAQ Suggestions and Corrections" 5/9/01 7:12am.
Screen captures are a basic part of technical writing and even non-technical writers, who use FrameMaker to write about software, will more than likely end up using screen captures.
This thread attempts to clarify issues about screen captures. This thread concerns itself primarily with screen captures of software, not the screen capture of things like photographs.
Please post questions about screen captures to the FrameMaker forum outside the FAQ thread!http://www.adobeforums.com/cgi-bin/webx?14@@.ee6b312

Dov Isaacs on Screen Captures Dov Isaacs had this to write about screen captures: *************** Date: Wed, 23 May 2001 10:23:22 -0700 From: "Dov Isaacs" <[email protected]> Subject: Imported / Placed Images - MORE (You Asked for It!) All: Some additional issues were raised yesterday both on-list and in some private emails to me about me postings with regards to screen capture images specifically and images in general. Issue #1 - UNIX =============== UNIX is not my specialty and Adobe no longer provides a version of Photoshop for any flavour of UNIX. Thus, my advice for UNIX users of FrameMaker are effectively to capture the raw image as TIFF, process the image on Windows or Macintosh to obtain the EPS file with the image interpolation option, and then move the resultant EPS file back to your UNIX-based system for use with FrameMaker. Issue #2 - File Size - Screen Captures ====================================== There is no question that the binary EPS files that result from the procedures I outlined yesterday are somewhat bloated compared to other files holding the same content. The resultant PDF files at the end of the process, though, are exceptionally compact. To show what is going on, I captured an image showing one of the PSCRIPT driver dialog windows. I saved the resultant RGB image in a number of different formats. The following are the files, sizes, and explanations: Printer Properties.bmp - 899 KBytes RGB and K only, no CMYK option, no compression option, no display/print-time interpolation, limited cross-platform interoperability, application/driver resampling problems Printer Properties.gif - 20 KBytes RGB only, no CMYK option, 24 bit color reduced to 8 bit color, no display/print-time interpolation, application/driver resampling problems Printer Properties.tif - 61 KBytes no display/print-time interpolation, application/driver resampling problems Printer Properties Direct ASCII.eps - 2735 KBytes no compression, enormous size (includes TIFF preview) Printer Properties Direct Binary.eps - 1462 KBytes no compression, large size (includes TIFF preview) care must be taken in setting Windows PostScript printer driver to correct binary option (most often TBCP if not AppleTalk printer) Clearly, you are indeed paying an on-host penalty in file size by using the EPS approach that I outlined. The resultant PDF generated from this content most often is SMALLER than the PDF generated from TIFF equivalents and has higher quality, but you will pay in terms file size of the on-host "content" files with the images. (You may ask "why are the EPS files from Photoshop so bloated?" The answer is two-fold. Part of the problem comes from the fact that Photoshop does not have a compression option for non-JPEG EPS export, although it has a ZIP compression option for non-JPEG PDF export. The other part of the problem is the TIFF preview header, which surprising enough, takes at least as much space as the "base" uncompressed image in PostScript. Yucck!) But alas, I did find a way of fixing this problem enough to be quite a bit more tolerable. (If local disk space is not a problem, then you need not worry about trying this stuff out!) Instead of saving the image as EPS with the interpolation option in either Photoshop 6 or Photoshop Elements 1, save the image as Photoshop PDF with the interpolation option and ZIP compression (not JPEG!!) using either one of those programs. THEN, in Acrobat 5, save the PDF file as binary EPS, TIFF header, language level 3. (In Acrobat 4.05a, export the PDF file similarly!) Resultant files (both ASCII and binary flavours): Printer Properties.pdf - 23 KBytes Most compact format for this image type Not appropriate for FrameMaker import/placement. Printer Properties from Acro5 ASCII.eps - 400 KBytes Slightly larger than binary equivalent, much larger in the general case, though (includes TIFF preview) Printer Properties from Acro5 Binary.eps - 396 KBytes Slightly smaller than ASCII equivalent, much smaller in the general case, though (includes TIFF preview) care must be taken in setting Windows PostScript printer driver to correct binary option (most often TBCP if not AppleTalk printer) With the replacement step of generating PDF instead of EPS and then the extra steps of running Acrobat and saving/exporting PDF, you save over two thirds of the disk space for the EPS files. There is no quality loss in this process. The savings in disk space is due to the fact that unlike non-JPEG EPS export from Photoshop/Photoshop Elements, PDF export from the same program can ZIP compress images as well. Screen captures do exceptionally well with non-lossy ZIP compression. The EPS save/export from Acrobat maintains the images' ZIP compression. The remaining "bloat" in these Acrobat-generated EPS files is the result of Acrobat's PostScript procedures in the EPS file as well as the TIFF header. Bottom line is that I think the extra steps are worth it if you want to conserve disk space. If you want to re-edit THESE EPS files in Photoshop, unlike the EPS files directly saved from Photoshop, extreme care must be taken in opening them to avoid weird resampling. Issue #3 - Non-Screen Capture Images ==================================== I would still recommend EPS as a better means of importing/placing images into FrameMaker such that resampling does not occur in the application or driver. Likewise, I would not recommend ever resampling any such images to a higher resolution. Turn on the image interpolation option and let either Acrobat or the ultimate PostScript printing device do the hard lifting for you. You gain nothing by carrying around the extra data which really contains no real new data. This is most likely contrary to what your service bureaus and printers will tell you as gospel and what their pre-flight software will advise you to "correct," but resampling here buys nothing at all. (If they still don't believe you, have them contact me!) I have revised the recommendations from yesterday based on the above ... - Dov ======================================================================== Based on our experience at Adobe, there is one way that easily yields the highest quality computer screen shots for both display and printing. (1) Grab the image with whatever your favorite tool is. Under Windows, the easiest thing to do is Alt-PrintScrn which puts the RGB bits onto the pasteboard. On the Mac, Shift-Command-4 followed by CapsLock yields an image file. (2a) Under Windows with Photoshop 6, create a new document. It will automatically be the size of the image on the pasteboard. CTRL-V will then paste the screen capture into that new image. Then, flatten that image. (2b) Under MacOS with Photoshop 6, open the generated image file (a PICT file with a name of the form "Picture x" where "x" is an integer). (3) Convert the screen shot image to CMYK or grayscale to suit your needs. Not all service bureaus require CMYK! If you are displaying the PDF file and printing to laser printers, CMYK buys you nothing other than potentially a larger file. (4) Flatten the image. Layers buy you nothing here and may cause problems later in saving the file. (5) Do not resize or change resolution of the image!!!!!! (Why? Because you generally don't know at this time exactly what the magnifications and resolutions are that you will be viewing and printing with! In fact, zooming in and out with Acrobat or Acrobat Reader changes those requirements on the fly. Better to simply just have the captured data. Upsampling or downsampling at time of need to exact specifications yields much better results than multiple such transformations!) (6a) Re-editable by Photoshop, but "bloated" EPS file size option! Save the image using File=>Save As using the "Photoshop EPS" option. In the "EPS options" screen, you should use the TIFF (8bits/pixel) preview option (yields an EPS file that can be used both on Mac and Windows), Encoding "binary" (ASCII can be twice the size and JPEG is totally inappropriate for screen shots). Check "PostScript color management" if you are using color management in your workflow. The key though is that you MUST check "Image Interpolation". This sets a image dictionary key that Adobe PostScript Level 2, Adobe PostScript 3, Acrobat, and Acrobat Reader use to do very high quality image interpolation and/or downsampling appropriate to the device's actual resolution and technology at the time the image is viewed or printed. (Distiller passes this key along from PostScript or EPS in a PostScript stream into the equivalent PDF image key!) Close Photoshop 6. OR (6b) Compact EPS file size option! (i) Save the image using File=>Save As using the "Photoshop PDF" option. In the "PDF options" screen, you should use the ZIP encoding (lossless compression) option. The key though is that you MUST check "Image Interpolation". This sets a image dictionary key that Adobe PostScript Level 2, Adobe PostScript 3, Acrobat, and Acrobat Reader use to do very high quality image interpolation and/or downsampling appropriate to the device's actual resolution and technology at the time the image is viewed or printed. (Distiller passes this key along from PostScript or EPS in a PostScript stream into the equivalent PDF image key!) (ii) Close Photoshop 6. (iii) Open the resultant PDF file in Acrobat 5 or 4.05a. Save the PDF file as an EPS file using the export function in Acrobat 4.05a or the Save As function in Acrobat 5. Set the options for binary EPS, TIFF header, and language level 3. (iv) Close Acrobat. (7) Import the resultant EPS file into whatever application you have in which you wish to include the screen print. Obviously you will only see the EPS preview in those applications (except for InDesign), but your resultant printed output (via PostScript or PostScript=>PDF) or display via Acrobat / Acrobat Reader will be of exceptionally high quality. During distillation, do not downsample any of these images. Downsampling of the screen shots can be avoided by having a high enough threshold for downsampling; 300dpi or higher will do! Working on a budget? It turns out that you can replace Adobe Photoshop 6 with Adobe Photoshop Elements 1.0 if you do not need to convert to CMYK and don't need any other advanced image handling. This could save you $500 a copy if your image handling needs are more limited. NO, as far as I know, neither JASC nor Corel PhotoPaint nor any of the other budget image edit programs offer the EPS export image interpolation option, assuming they even offer the EPS format. Furthermore, none of the nifty screen capture utilities that we know of offer either EPS or EPS with the image interpolation option. We know of NO better means of producing high quality printed or displayed screen shots in an output device independent manner. Forget GIF, TIFF, BMP, and especially JPEG. Forgetting the issue of the image interpolation feature for the time being, use of any of these formats results in the "host" program (such as FrameMaker or Microsoft Word, etc.) doing their own resizing of the image in conjunction with the PostScript drivers based on the device resolution selected. The bottom line is that by the time Acrobat gets to display the image or the PostScript RIP gets the image data, the image data will have been upsampled, downsampled, resampled, i.e. overmangled! Also, note that for purposes of placing other images in FrameMaker or similar applications, EPS with the image interpolation also is the preferred means of image placement for exactly the same reasons. In terms of image resolution, you may choose to leave as-is and let the Distiller do the heavy lifting, if necessary or downsample in Photoshop if the original image is grossly over-endowed, so to speak. Remember, you cannot later reconstruct what you downsample now. With regards to the "resolution" that you set the Acrobat Distiller printer to, that resolution primarily affects non-EPS image handling. As long as you set the resolution to 600 dpi or greater, character and vector artwork placement will be fine and not affected. You don't need to use the resolution of the final device (in fact, don't go over 1200 dpi under Windows or you might hit a nasty bug in FrameMaker's interface with the driver). For distillation job options, always use "compress text and line art". This is non-lossy compression and you gain nothing by not using it other than a larger PDF file size. I know that this information is very much at odds with what your service bureaus, printers, or Kinkos will tell you, but it is authoritative and Adobe Systems Incorporated stands behind it completely when used in conjunction with Adobe Acrobat and RIPs with Adobe PostScript Level 2 or Adobe PostScript 3.

What's with the occasional "Unsupported image format" errors?

I get this error randomly -- suddenly Aperture can't show me anything but a brief flash of the image, and then I get the maroon screen "Unsupported image format" error. Restarting Aperture returns things to normal. I've seen this in both version 1.5.6 and 2.
I can count on this occurring about every hour or so. This is quite frustrating. I use CR2 files almost exclusively, written from a Canon 5D.
Any ideas or workarounds for this behavior?

I was getting this all the time with 1.5, I have not seen it yet with 2. I think it's a memory thing, it happens more quickly if I am running Safari and other stuff. Sometimes quitting Aperture then starting again does the trick, more often shutting the machine down and rebooting clears it. I also have some very large tiff's in the library, Aperture can't (I've not tried it in 2 yet) cope with them, always the unsupported error message. These files are between 300mb to 1gig, sometimes it justs hangs on to the 300mb but mostly not. By the end of the day it was a real problem, I could only export images 2-3 at a time, if I tried to email 10 low res I would get either an out of memory warning or unsupported etc.
Something holds onto the memory somewhere either in Ap or Safari or all things running.
Kevin.

Screen Shot file format

Is there any way to change the default screen capture file format from .png to something like .jpg?

In addition to what Niel suggested, you could use a program called Deeper that offers you a GUI interface to change not just screenshots, but many other aspects of OS X. It's available from Apple Downloads as well as from places like versiontracker.com.

Changing file type format in Screen Capture (shift command 4)

You'd think this would be in a preference menu! But it's nowhere to be found in any apps preference or system preferences.... I've seen posts how to do it in Terminal... and people sell programs to do it.... but Tiger and Leopard have t built in.. sort of....
The default file format when using SCREEN CAPTURE (ShiftCommand4) was a .pdf ... but then it was changed to .png Some people can't read .png... so I wanted my captures to be in .jpg format.
You can change the file format type of your SCREEN CAPTURE to any of the following:
JPG, JPG-2000, TIFF, BMP, PDF, Photoshop, PICT, SGI, PBG, TGA
But first you have to have a file you want to change (say it is a png).
Open the file using Preview.
Once open, under File (in the menu bar) go down to SAVE AS.
There's you'll see FORMAT and a pull down menu. Choose which one you want...
Screen capture will now open your captured pictures in that format.
Crazy, huh?

The OP here was using a keyboard shortcut, not Grabber.
I did some further exploring. I just tried TinkerTool again, and again was able to change the file format of saved screencapture files to jpeg. TinkerTool modifies the com.apple.screencapture.plist file the same way that the Terminal command does.
This clearly works for command-shift-3 and command-shift-4, which save the screencapture image as a file. However, on looking more closely at the O.P.s initial post in this thread, he/she actually said
I use keyboard shortcut control/command/shift/4
When you include the control key in the command, the screencapture image gets saved to the clipboard instead of to a file, and you wouldn't normally be aware of its format until you pasted the clipboard contents somewhere else. I don't know where the OP was pasting it, but as was noted in the thread cited above by Baltwo, pasting a sceencapture image from the clipboard into a mail.app message results in a .tiff file being pasted. I also find this to be true in my system - perhaps this is what the OP was doing all along.
However this is an issue caused by the receiving app, not by the screencapture function. It's possible to look directly at the contents of the clipboard via:
Finder>Edit Menu>Show Clipboard
With my screenshot format set to jpeg by TinkerTool, I used control-command-shift-4 to save a screenshot to the clipboard. Looking directly at the clipboard in Finder as above, the clipboard image was a jpeg. When I then pasted the clipboard contents into a mail message and used Mail>File Menu>QuickLook Attachments, the pasted graphic in the mail message was a .tiff.

Screen capture and PNG format?

Hi,
When I use the screen capture feature (SHIFT  4) I always get a *.PNG file. Is there a way to setup the screen capture to a JPG file format as default?
Thanks

I dont think so. I know that the Grab utility can save as TIFF, but I am not aware of it being able to save as JPEG.
However I believe that you can use Preview to export the screen image to a JPEG file. However this is not exactly what you want.
I know OSX has some frustrating features, and in some areas and ways I miss OS 9. But then again screen capture to JPEG was not available in OS 9 without third party software.

GPIB instrument Screen Capture in Definite Length Block format

Need help for a person wanting to convert to LabView!
I need to do a screen capture of an Agilent spectrum analyzer (Model 4408B) and this SA will output an image in JPEG in 488.2 Definite Length Block format. This means the JPEG file will have a header that starts with a "#", is followed by a single digit that gives the length of a following count field, and then the count field, which gives the length of data being sent. For example, to send a block of 1024 bytes, the header would have the form "#41024".
We do a lot a screen captures in our testing, so we have a many programs in Agilent VEE to do this on a routine basis. In VEE, there is a function called Read BINBLOCK which reads the image data and strips of the header mentioned above before we write the data to a file.
I started to port this program to Labview to see if we can speed up our testing (in general, not for screen capture). So with Labview 6, I use the "GPIB Read" function to read the image data from the GPIB bus, then write the data into a file. But using a probe, I found that header mentioned above is still there and any image program wouldn't read the image file at all (Can't Open or Can't Determine Type). Furthermore, the "Write File" function in Labview adds some additional header before the "#41024"-type header mentioned above.
By the way, I tried the GPIB function "RECEIVE" instead of the "GPIB Read" function above and got exactly the same result.
So the problem has 2 parts:
1. Is there a way to read, or receive, Definite Length Block data from the GPIB bus (similar to VEE's Read BINBLOCK function).
2. Is there a way to prevent Labview's "Write File" function not to add some other header of its own to the saved file.
NOTE: In the "Write File" function, I experimented with using a Pos_Offset value ranging from 1 to 8, in order to get rid of the header caused by part 1 above. But anytime the Pos_Offset value is greater than zero, the saved file will be empty!
I appreciate any help from the Labview community for this seemingly simple problem.

Ray K., you are a scholar and a gentleman! I appreciate your extremely helpful suggestion.
I tried your suggested VI to strip off the header portion added by the 488.2 Definite Length Block format, and with a little modification, it works like a charm. The only thing is that I have to use the "RECEIVE" function (the "GPIB Read" function wouldn't work). But "RECEIVE" works beautifully, and that's what counts.
The only minor issue is that you have to set the Byte Count of the "RECEIVE" function to tell it the size of the file being received. If Byte Count is not wired, no data will be recieved, even if you set the mode to 1 or 2 to detect the end of file. If Byte Count is set to a number greater than the actual file size, it will work OK. In this case,
I know the file size so I can set Byte Count correctly. But is there a way for the "RECEIVE" function to detect automatically the End of File so that I don't have to fumble around with Byte Count? As I said, I set Mode value to to 1, 2, or other values but that wouldn't work either.
Both the "Write File" function (with Header set to False, which is the default) and the "Write Characters to File" VI work perfectly as you pointed out.
My only remaining question is why "GPIB Read" wouldn't work (with any value of Mode setting and Byte Count) while "RECEIVE" function works. "GPIB Read" did receive the GIF file, but it can't be opened.
Thank you for your great help.

How do I connect two video cameras to my computer have them both show up on the desktop at the same time so I can see and capture both images using a screen capture program?

Hello,
I am a teacher and want to make some videos to post online for my class. I would like to have it set up so that I have a powerpoint presentation going, a video camera pointing at a piece of paper I can write on and another video camera pointing at me. How do I do this? I have seen several solutions but they seem to be for switching between videos whereas I want both video images to be on at the same time.
Also, is there a screen capture program you would recommend?

Go to System Preferences - Sharing and change the computer name there. You can also, optionally, change the name of your hard drive to further clarify the origin of your backups. Click once on the "Macintosh HD" on your desktop, then click its name to allow you to edit it.
Matt

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