Re: How to capture my desktop?
Re: How to capture my desktop?
- Subject: Re: How to capture my desktop?
- From: Robert Walker <email@hidden>
- Date: Fri, 25 May 2007 20:36:25 -0400
Hi all,
I've been following this discussion and looking for a "real" solution
for this.
I am planning to produce a screen-cast series and was surprised to
find that solutions to screen-casting appear to be lacking in many
ways. I'm currently using Snapz Pro X to capture video and audio.
The software is decent, but it lacks several features I would love to
have:
1. The ability to drag the video "Frame" to another part of the
screen. Snapz Pro X has features for following the mouse as it moves
on the screen, but sometimes I just want to drag the window manually.
2. Feature to pause capture during a session (without having to go
through the entire encoding and saving process). This really breaks
the rhythm when recording screen-casts.
3. A time-code track on the video (displays the time-code during
record and playback sessions). This should be compatible with Final
Cut Pro and iMovie if possible.
4. Snapz Pro X appears to be more geared to capturing still images,
and the movie feature feels like a "half-complete add-on" to the
program.
Don't misunderstand me, I think Snapz Pro X is a great program. It's
just not the best fit for what I'm trying to accomplish.
Problem 1. I'm a complete noob on Mac OS X development. I have
gotten as far as having a decent prototype of a semi-transparent
frame with buttons for play, record, pause, etc. I can drag it
around on the screen and resize it to indicate the portion of the
screen to record. That's where I got stuck. I only know how to
capture the content of that window (or portion of that window), but
what I need is the fully composited frames from the desktop all the
way through any other application's views contained within the
designated "record" rectangle.
I assume to do this the software must be able to "grab" pixel data
directly out of the final screen buffer that gets pushed to the video
memory of the display hardware. I'm guessing this would be an OpenGL
operation.
Problem 2. I know nothing about OpenGL at this point. So, while I
feel I could handle the basic needs of my application, I don't feel
that I can reasonably handle the OpenGL work necessary to capture
pixel data. I'm not sure yet about how to capture that pixel data to
QuickTime, but that sounds like a fun bit of research.
Sorry for the long post, but my point is this: is there anyone out
there that would be willing, or have the time, to develop the OpenGL
pixel data capture feature. I would be willing to pay a reasonable
fee for the solution. Lets just ball park it at 3x the cost of Snapz
Pro X, which is roughly around $200.00. Any experienced OpenGL
programmers please email me off-list if interested.
On Feb 26, 2007, at 4:15 PM, Henry Joseph W wrote:
Hi All.
My purpose is very simple:I want to capture my desktop to generate
an image, then do some stuff to it.
Or it may be not so easy to accomplish this. Can anyone give me a
guide?
Thank you for any suggestion.
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