Extract luma, chroma info from video?

Jordan Johnson jwllmjohnson at gmail.com
Tue Jun 24 11:39:29 PDT 2014

I am working on an NTSC <https://en.wikipedia.org/wiki/CCIR_System_M>
transmitter in gnuiradio, and somehow need to have theluma (monochrome)
<https://en.wikipedia.org/wiki/Luma_%28video%29>, and chrominance (color
difference) <https://en.wikipedia.org/wiki/Chrominance>. As single raw
files. The chrominance must futher be split into hue and saturation
channels, as they must be QAM modulated temperately to form the complete
color signal. I have the radio portion in place, I simply need some input
to test it,

On Tue, Jun 24, 2014 at 2:08 AM, Tim Müller <tim at centricular.com> wrote:

> On Mon, 2014-06-23 at 11:20 -0700, Jordan Johnson wrote:
> Hi Jordan,
> > I would like to use gstreamer to take a video, and extract the luma
> > and chroma components from the video into raw files for editing. What
> > is the best way to do this?
> Could you describe in some more detail what you want to do exactly?
> "Take a video" - from what source? Camera? What kind?
> When you say you want to "extract the luma and chroma components from
> the video into raw files", does that mean you just want to save the raw
> video frames to a file somehow, or do you want to access each frame in
> your application directly and then poke at the pixels (luma/chroma
> components) yourself? The appsink element might help with the latter.
> Cheers
>  -Tim
> --
> Tim Müller, Centricular Ltd - http://www.centricular.com
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