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View Full Version : ffdshow is a dark hue codec?

Elias
18th February 2005, 10:50
http://img219.exs.cx/img219/7889/huffyuvlosslesssource7jk.png
http://img100.exs.cx/img100/7422/ffdshowdivx5source3cz.png
The first picture is the lossless huffyuv source. The following picture is DivX5 MPEG-4 encoded with the ffdshow codec from the huffyuv source.
Now, this isn't easy to see, but if you compare them closely next to each other, you will notice that the ffdshow version is somewhat darker in hue. This is the case with anything encoded in the ffdshow library of codecs (lossless jpg, XviD, you name it). Why?
Elias
3rd March 2005, 08:48
Anyone have any kind of answers as to why this occurs?
Sirber
3rd March 2005, 13:31
if no answer, then it seems that no. I looked at your screenshots and haven't found a problem :confused:
Elias
3rd March 2005, 16:48
Originally posted by Sirber
if no answer, then it seems that no. I looked at your screenshots and haven't found a problem :confused: Compare them closely, preferably in a picture program where you can swap between images fast. Trust me, my eyes aren't deceiving me on this one.
communist
3rd March 2005, 17:46
The only difference I can spot here is that the encoded version *looks* slightly darker due to the noise being softened.
Elias
3rd March 2005, 20:23
Originally posted by communist
The only difference I can spot here is that the encoded version *looks* slightly darker due to the noise being softened. It's not because of the noise, it's the same results when encoding with the JPEG Lossless in ffdshow.