Fieldblended PAL->NTSC issues

[dansrfe]

I have this weird fieldblended DVD source (PAL->NTSC) that yadif doesnt seem to completely work on and it doesnt give pleasing results. The two problems I'm left with after using yadif and srestore are that:

1. Camera pans in the movie do not remain smooth.

2. There are these weird "luma" leaks on transitions and sometimes 2 frames can be seen at once in a transition. This is almost every transition and is very notiecible at normal playback speeds from the output of the script.

here are 2 cuts of the vob:

http://www.sendspace.com/file/aylp07
http://www.sendspace.com/file/knnbps

Thanks in advance

[jagabo]

What's your full script? CUT.VOB with the following script:

Load_Stdcall_plugin("C:\Program Files\AviSynth 2.5\plugins\yadif.dll")
Import("C:\Program Files\AviSynth 2.5\plugins\SRestore.avs")

MPEG2Source("Cut.d2v")
Yadif(Mode=1,Order=1)
SRestore(FRate=25)

gave very smooth results and no chroma bleed here.

cut.avi

Be sure to use "Honor Pulldown Flags" in DgIndex.

[dansrfe]

This is basically my script as above^ but still the avi shows that quick extra or dupe frame in transitions. I think i need to cut a better sample to show pans and stuff.

New Sample: http://www.sendspace.com/file/lg2nic

and I did have the honor pulldown plags enabled also here is the dgindex info of this cut:

[manono]

It's as jagabo said it was. Maybe try RePAL to see if you like the results any better:

Yadif(Mode=1,Order=1)
RePAL()

You'll still often get that that frame overlap on scene changes though. If you don't like it, work your way through the movie and replace those frames with the good frames before or after using FreezeFrame. And sometimes after a scene change it takes a few frames for the unblender to lock onto the new pattern so you get a few frames of dupes or jerkiness.

Look, it's Indian field-blended garbage. Write to the DVD production company and politely ask them to produce a proper NTSC DVD made from a proper NTSC master. I'm sure they won't mind.

[jagabo]

Occasional blended frames and artifacts sneaking through is unavoidable. Especially when cuts occur within b frames (ie one field from one film frame the other field from the next film frame). I converted cut2.vob and saw no duplicate frames but did see artifacts at several transitions. For example:

[dphirschler]

2. There are these weird "luma" leaks on transitions and sometimes 2 frames can be seen at once in a transition. This is almost every transition and is very notiecible at normal playback speeds from the output of the script.

Do the "luma" leaks look like this http://forum.videohelp.com/topic376421.html? If so it may be as simple as reordering your script.


Darryl

[jman98]

Look, it's Indian field-blended garbage. Write to the DVD production company and politely ask them to produce a proper NTSC DVD made from a proper NTSC master. I'm sure they won't mind.

For the original poster, you can try this, but it almost certainly will be ignored. I'm pretty sure manono himself doesn't really expect that to work.

This happens all the time all over the world. Some production companies maintain interlaced PAL masters and just convert to NTSC from that. It's insane, but it gets done a lot. Hong Kong does it a lot. Ruscico in Russia does it. Various UK DVD production companies actually do the opposite and convert from NTSC masters to PAL.

If the original poster is going to have to do this more than a couple of times, it's generally better to just buy a converting DVD player to watch the DVDs with unless he places no value at all on his spare time and has nothing better to do than do this type of conversion.

[manono]

I'm pretty sure manono himself doesn't really expect that to work.

Should I have put a smiley face after the remark? No, they wouldn't ever in a million years do that for him or anyone else. Then people might get the mistaken impression that these arrogant companies actually care what people think.

If the original poster is going to have to do this more than a couple of times, it's generally better to just buy a converting DVD player to watch the DVDs with unless he places no value at all on his spare time and has nothing better to do than do this type of conversion.

What's to convert? It's already an NTSC DVD and dansrfe's in the US. He's just trying to improve it a little bit.

[2Bdecided]

If it exists, it's better to find the PAL version and convert it yourself.

(Unless that's bodged too!)

Cheers,
David.

[dansrfe]

My main goal was just to make it a progressive ntsc dvd and fix all the little problems associtated with it. time is not really an issue because the computer does the work anyway lol. not me. My desktop is on all the time anyways so theres no harm in letting it do something along the way.

[manono]

time is not really an issue...

Since you have all the time in the world, then maybe this script, which apparently gets rid of the bad frames at scene changes automatically by replacing them with a good one next to it (I think), will be to your liking:

http://forum.doom9.org/showthread.ph...09#post1351709