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View Full Version : ConvertToYUY2() artifacting in Avisynth 2.5.1 RC4 ?

HomiE FR
31st May 2003, 07:43
I'm sorry to open a thread just for this, but since I didn't find the thread about bug in the latest Avisynth versions...
To all mods : feel free to remove it.

Back to the matter : When using ConvertToYUY2() built-in in new Avisynth 2.5.1 RC4, I got some strange artifacting. The source I used with ConvertToYUY2() was an interlaced Z1 anime, and I didn't see the artifacts when I don't do some uncombing. But when I use Decomb (new version) with it I can spot these artifacts very easily : there are some interlaced lines that appear when there is some high motion.

Using YV12toYUY2() from Nic's MPEG2Dec3 1.06 made these artifacts go away, so I'm convinced it comes from ConvertToYUY2(). I saw using the search function that there were some threads about ConvertToYV12() problems, but I guess there is also a problem with ConvertToYUY2().

I don't know if anyone experienced the same as I did, but I'm pretty sure it comes from ConvertToYUY2(). If you need some screenshots (I know this is not a simple example, since it is an interlaced Z1 anime source) feel free to ask and I'll upload them quickly.

HomiE FR
sh0dan
31st May 2003, 09:47
I'm very interested in this. Are you converting BEFORE telecide? Then you always have to use "interlaced=true".

Could you post a vob-fraction and the exact script to reproduce it.
HomiE FR
31st May 2003, 10:06
argh... I didn't use interlaced=true... Indeed I'm using ConvertToYUY2() before Telecide, since the new version currently needs YUY2 color space to work.

Sorry sh0dan, I'm going to check the matter right now. If there is still a problem I will explain how to reproduce it and some screenshots. If not, I will apologize ! :)
HomiE FR
31st May 2003, 10:10
Ok you were totally right sh0dan, that was interlaced=false which screwed up the video... Sorry for having done a false bug report, but since there is no bug it's probably good news. :)

Thanks for having answered so quickly.

HomiE FR
sh0dan
31st May 2003, 10:13
No problem - it is better to have five false reports than one bug that slips through in a release. :cool:
HomiE FR
31st May 2003, 11:20
Ok I quote what you just said. So I won't be afraid to post bug reports in the future, even though I'm not totally sure they are bugs (just kidding). :p