[FFmpeg-user] zimg colorspace yuv -> rgb possible?

Andy Furniss adf.lists at gmail.com
Wed Jan 27 00:34:23 CET 2016

Paul B Mahol wrote:
> On 1/26/16, Andy Furniss <adf.lists at gmail.com> wrote:
>> Andy Furniss wrote:
>> Here's the assert - after seeing swscale in the first test I tried
>> format=rgb24 ...
> use copy filter before zscale filter.
> Anyway using y4m is wrong as it doesnt have frame metadata as
> primaries,matrix coefficients etc.

As I said I did also try a "real" input = the transport stream I linked.

> I added support for overriding input params in zscale.

Thank you.

> so something like this should work:
> ffmpeg -i input.y4m zscale=min=709:range=full,format=gbrp out.png
> If it asserts, add copy:
> ffmpeg -i input.y4m copy,zscale=min=709:range=full,format=gbrp out.png

This works - it will assert without the copy.

Is interlace aware 420 -> * possible?

I notice in the web help -


That there are several options at the end that don't appear in ffmpeg -h 

Earlier I tried the [o]hsub/vsub so I know they are unrecognised -
  maybe they and any others that don't parse should be removed.

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