Tips & Tricks
135
miroVIDEO DC30 series
AND COMPUTER ANIMATION
If you are editing computer animation with the miroVIDEO DC30 series or
wish to link them to a digital video, please note the following important
information:
•
Match frame sizes.
Create your animation using the same frame size and image refresh rate as
your original video, 640x480 if you work with NTSC at that format. Failure
to do this will result in unnecessarily long format conversions and, after the
conversion, faults will be visible when the animation is played back.
Check field rendering options
To make your animations play on a TV perfectly smooth, they must be
rendered field by field. See the documentation of your animation software
for details.
Render directly to Motion-JPEG format
Most animation software allows to export directly as an AVI, meaning you
can directly create files that are playable by your miroVIDEO DC30 series
product. These can then be watched on TV or recorded to tape without
further steps. To achieve this, you must set the export AVI settings properly
in your animation software, such as 3D Studio MAX or AfterEffects. See the
ReadMe file for details.
Or render to an intermediate format
If you want to do further image compositing with your animations, it may be
a better option to first create the animation in a different format like
numbered TGAs with alpha channel, do further compositing in Premiere or
other apps, and export the final result into the Motion-JPEG format.
You must use the correct resolutions and frame rates here as well.
JPEG
ISSUES
If you capture or create video with your miroVIDEO DC30 series board at a too
low data rate, you may see image degradations like these:
•
A checkerboard pattern appears at sharp color transitions and edges (light –
dark).
•
Unequal blocky color distribution in uniform, soft shadows.
If you see anything like that, you must recapture or re-render the video at a
higher data rate (lower compression ratio) setting. If this results in stuttering
playback, you must reduce the image resolution.
