On Wed, 9 Nov 2005 05:18 am, Matto Marjanovic wrote:
>  >Any suggestions on how to fix this would be greatly appreciated.
>  >Went to use DVDStyler last week and got hit with the below:
> In v1.8+, ppmtoy4m produces a 4:4:4 stream by default, since this
>  involves the minimal amount of processing and since its internal
>  subsampling algorithm is not very good.
> mpeg2enc, however, wants some form of 4:2:0 input.
>
> So, either something like y4mscaler needs to be used between the two
>  to do good subsampling, or the "-S" option (with a suitable parameter)
>  needs to be supplied to ppmtoy4m to do mediocre subsampling.
> -matt m.

 yep, in this case I added "-S 420mpeg2 " 

Thanks much :)


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