It helps to return a TimeRecord to QuickTime on *subsequent* frames.
In my eagerness to get it all going, I'd not quite completed the
CompressDone method. All works now!
---
Neil Clayton
On 22 Dec 2005, at 14:55, Neil Clayton wrote:
Thank you to all who suggested I go down the compressed source
route. A much fast, better idea. Not only is this a simpler
approach, it's considerably faster. I ripped out all of the non-
compressed irrelevant functions, and implemented the compressed
ones - using SoftVDigX as a basis.
In order to get things to work with the glReadBits call, I had to:
- Say that the depth is 32 for ImageDescriptor->depth
- Tell QT that the compression format is kRawCodecType
Other than that - I didn't have to do too much else apart from
fixing my own broken code!, and of course make it use the gl screen
grabber code I'd previously written. After struggling considerably
with the non-compressed version of these calls, I was quite happy
to find that everything almost worked, in about 1/5th of the time
(coding wise).
I now have only one remaining issue: although I can see the preview
(small window) in the video settings dialog, and I can see the full
version of the screen in WhackedTV (and iMovie), both WTV and
iMovie don't record. Well, they do - but I end up with a movie of
the right time (in seconds), with audio (and the audio is OK) - but
pretty much only the first and last frames - nothing in between.
Also, the 'last frame' is shown about 1/2 a second into the movie,
and continues until the end of the movie.
Anyone got any ideas what I might be doing wrong, from a vDig point
of view?
Thanks in advance,
---
Neil Clayton
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