Forums > Jitter

[OT] Convert videos to grayscale

April 10, 2008 | 9:36 am

Hi,

Does anyone know of a video batch application (ala MPEG Streamclip)
that can convert colour videos to grayscale?

It is not an option to use Max for this, since the video files that I
have to convert cannot be opened with QuickTime (recorded with some
weird surveillance camera system).

Thanks,
Alexander



Dan
April 10, 2008 | 7:23 pm

From MPEG Streamclip’s help file:

Adjustments
The Adjustments panel lets you adjust brightness, contrast, saturation
and volume. Adjustments take effect only if you click OK.

Turn the saturation down to 0% and you’ll be good to go. Google "MPEG
Streamclip batch process" if you don’t know how to batch in it.

cheers,
dan

On Apr 10, 2008, at 5:36 AM, Alexander Refsum Jensenius wrote:

> Hi,
>
> Does anyone know of a video batch application (ala MPEG Streamclip)
> that can convert colour videos to grayscale?
>
> It is not an option to use Max for this, since the video files that
> I have to convert cannot be opened with QuickTime (recorded with
> some weird surveillance camera system).
>
> Thanks,
> Alexander


April 15, 2008 | 1:31 pm

Hi,

Thanks for answering. Yes, I know about the adjustment possibilities,
but this will still give you a 4 plane video file. I am looking for a
way to reduce file size and processing load, and then it would be
better to get a real 1 plane video file.

Thanks,
Alexander

> The Adjustments panel lets you adjust brightness, contrast,
> saturation and volume. Adjustments take effect only if you click OK.

>> Does anyone know of a video batch application (ala MPEG Streamclip)
>> that can convert colour videos to grayscale?


April 15, 2008 | 5:29 pm

generalizing, any codec that compress video NOT as rgb (or argb) will give
you better results. like yuv colorspace http://en.wikipedia.org/wiki/YUV
some codecs support both colorspaces. see the link for more info. but its
always better to just try. also quicktime is very picky about what codecs it
will prefer. beter test before.
the 1 plane4 plane is a jitter convention

On Tue, Apr 15, 2008 at 4:31 PM, Alexander Refsum Jensenius <
a.r.jensenius@imv.uio.no> wrote:

> Hi,
>
> Thanks for answering. Yes, I know about the adjustment possibilities, but
> this will still give you a 4 plane video file. I am looking for a way to
> reduce file size and processing load, and then it would be better to get a
> real 1 plane video file.
>
> Thanks,
> Alexander
>
>
> The Adjustments panel lets you adjust brightness, contrast, saturation
> > and volume. Adjustments take effect only if you click OK.
> >
>
> Does anyone know of a video batch application (ala MPEG Streamclip) that
> > > can convert colour videos to grayscale?
> > >
> >
>
>


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