[FFmpeg-user] bgra to yuv

[Josh long]

On Wed, Apr 11, 2012 at 1:49 AM, Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:

> Josh long <funkyirish <at> gmail.com> writes:
>
> > Here goes:  I want to convert bgra 1920x1080 30fps video
>
> (I am still curious how / why you get bgra video:
> Is that ray-traced material containing transparency?)
>
> > to yuv444p format for compression using straight dirac_encoder.
>
> > ffmpeg -i 0_10_sec.avi  -vcodec rawvideo -pix_fmt yuv444p yuv444.avi
>
> Why don't you use libschroedinger instead of rawvideo in
> this command line if your goal is to get dirac in avi?
>
> (The real question is why you want to use yuv444 dirac:
> dirac usually has no advantages over other codecs, if you
> need a lossless codec, try ffv1, it also supports RGB.)
>
> Concerning your command line:
> yuv444 is not defined in avi (if you have a counter-example,
> please share it!), use nut if you need to store raw yuv444p
> in a container (I do not think that is what you want to do).
>
> And please note that if you are a user, current git head is
> always recommended.
>
> Carl Eugen
>
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The real reason we wanted to use dirac is because our team-leader wanted to
try to parallelize the process (which we never got to).  I'm still not sure
why he didn't want to go straight to  schroedinger for that.  I couldn't
find any information on nut, or play one which is why I tried avi.  Thanks
for all of your help;  After this project I am on to my real field, analog
hardware design.

I'm not real sure about the camera, or what there is to say about our
client's filming procedures unfortunately.  We haven't been in touch with
them very much.

Blessings,

Joshua