AW: Lossless Codec for Gray 8-Bit and Matroska

[Horst Huchen]

I have a grayscale camera and I would like to store their images. 
And I don't understand why I should store additional color information.
Or isn't there any difference of the file size when storing greyscale in YUV
instead of storing it directly into an gray format?

-----Ursprüngliche Nachricht-----
Von:
gstreamer-devel-bounces+horsthuchen=googlemail.com at lists.freedesktop.org
[mailto:gstreamer-devel-bounces+horsthuchen=googlemail.com at lists.freedesktop
.org] Im Auftrag von David Schleef
Gesendet: Donnerstag, 2. Februar 2012 20:34
An: Discussion of the development of and with GStreamer
Betreff: Re: Lossless Codec for Gray 8-Bit and Matroska

On Thu, Feb 02, 2012 at 04:32:42PM +0100, Horst Huchen wrote:
> I came to the conclusion using Motionjpeg (jpegenc) and Matroska with 
> grayscale videos and setting the quality to 100.
> It's not lossless, but I hope it has enough quality for my effort.
> 
> Maybe it's possible to develop an grayscale version of the huffyuv 
> Encoder, but I don't know anything about the huffyuv encoding algorithm.

Is there any specific reason you need a greyscale codec, as opposed to
encoding YUV images that merely happen to be grey?



David

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