On 7/3/07, Claude Heiland-Allen <[EMAIL PROTECTED]> wrote:
I have a large number (46650) of image files that I thought I would use
transcode to convert to DVD MPEG2, seeing that it has an mpeg2enc back end.
But, the output is really really ugly - it seems the chroma subsampling
is spatially aliased, so my 1-pixel lines flicker between colour and
grey in a very wrong way:
[...]

Dunno yet if this is an ImageMagick issue, an import_im glitch or a
transcode core misbehaviour... Which version of ImageMagick and
transcode are you using?

[...]
(good)   lossless TIFF images -> ppm -> ppmtoy4m -> mpeg2enc -> MPEG2

is vastly superior to:

(bad)    lossless TIFF images -> transcode -> mpeg2enc -> MPEG2

Any thoughts?

Feeding transcode with images converted to ppm leads to bad result as well?

Bests,

--
Francesco Romani // Ikitt

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