question on de-interlace

[wizard327]

Hi Guys,
Just a quick one.I have a DV film captured by scenalyzer on my hard drive.Now I want to convert it to SVCD using Canopus procoder or DVD2SVCD.Shall I use interlaced or de-interlace?Thanks for any input.

cheers,

[bb]

This has been discussed in many threads. If you ask me, always deinterlace for SVCD because of the better compression. But there are other opinions as well.

Try a search on the forums.

bb

[wizard327]

Originally posted by bb
This has been discussed in many threads. If you ask me, always deinterlace for SVCD because of the better compression. But there are other opinions as well.

Try a search on the forums.

bb

Thanks BB.Did a search in the forum and there are divergent opinions.Basically,i have tried both interlace and de-interlace and still cannot get the "right" picture.Thyanks for your input.
cheers,

[Swan]

@wizard327
This may interest you:
http://forum.doom9.org/showthread.php?s=&postid=327258#post327258

[wizard327]

Originally posted by Swan
@wizard327
This may interest you:
http://forum.doom9.org/showthread.php?s=&postid=327258#post327258

Thanks Swan for the lead.Just tried another approach last night.Instead of using canopus procoder,i used CCE V2.5,(DVD2SVCD) 3pass VBR,non-interlaced.In fact the result as compared with the canopus encode was almost the same but total encoding time with CCE was more faster.However,I still cannot remove the 'Mice teeth.'I want to play the final SVCD on my standalone dvd player/TV monitor.Think i have to find another approach.

cheers,

[Swan]

However,I still cannot remove the 'Mice teeth.'I want to play the final SVCD on my standalone dvd player/TV monitor.Think i have to find another approach.
No, no! You don't want to remove the "mice teeth"!
The "mice teeth" effect is normal. It is how interlaced video looks when viewed on a non-interlace (progressive) monitor like a computer monitor.
It will look just right when you burn that video you have encoded on a SVCD (CD-R/RW) and play it on a standalone and watch it on your TV set.
And to avoid seeing the "mice teeth" when you watch the SVCD in your computer, on your progressive computer monitor, just watch it with a DVD software player, like PowerDVD or WinDVD. It will deinterlace the video on the fly, as it plays it.

And when you encode, don't use "non-interlace" or "pr9gressive" in CCE or TMPGenc or Procoder, or any encoder. In CCE, uncheck "Progressive" and uncheck "ZigZag scan".
By unchecking "progressive" and "zig-zag scan" in CCE setting, CCE will not deinterlace, but it will use a different "method" to encode the video, which is the best suited for interlaced video.
Oh, one more thing: In DVD2SVCD, choose "keep interlaced".

[wizard327]

Great!Thanks once again swan.I will try your suggestion tonight and let you know tomorrow.By the way,I observed the mice teeth on a burned disc playing on my standalone dvd player+TV monitor.Tonight,i will uncheck progressive and zigzag scan and see how it goes.I"ll keep my fingers crossed and keep you posted :)

best regards,

[wizard327]

Hi Swan,
did the test last night as you suggested.The pic came out much better and sharper without the usual problem.However,in scenes where the camera moves from one location to the next(say from left to right or top to bottom),the image gets distorted and jerky.Hope to hear from you again.

cheers,

[avih]

wizard327:

the main difference is:

keep interlaced -> more artifacts (or higher bitrate), but 50 fps (=smoother)

deinterlace -> better image quality (or lower bitrate), but a bit more jerky of fast scenes (25fps instead of the original 50fps).

so it's for you to decide. if it's a grand prix race, i'd go for interlaced, since for me it's important to keep it fluent at 50fps. if it's a talk show, i'd go for deinterlace since there's not much motion anyway, and the image quality might me better.

it's down to personal tase and the nature of the clip.

[Swan]

Originally posted by wizard327
Hi Swan,
.However,in scenes where the camera moves from one location to the next(say from left to right or top to bottom),the image gets distorted and jerky.Hope to hear from you again.

Ok now that's a field order problem. You have to tell the encoder what field order your video has.
Since you're posting in the DV forum, I assume your video is DV compressed. So it has Field Order B (also known as Lower).
If you encode in Procoder, set it to "Lower/Odd Field First" in the first window, where you add the video to be encoded.
Set the same thing (if Procoder doesn't do it by itself)in the Target window of Procoder.
If you use DVD2SVCD, you have three choices on encoders, if you have them installed, of course: CCE, Procoder and TMPGEnc.
Since you're a bit of a rookie on interlace issues right now (no offense), avoid CCE until you get the hang of encoding in Procoder.
It gets a bit complicated in CCE. If you decide to try TMPGEnc, set it to Bottom Field First (field b).

Good luck to you!

[wizard327]

Hi Swan and Avih,
thanks for taking the time out to help me.I'll just have to try different settings but with all your inputs,i'm sure i will get there.Thanks again.

cheers,

[avih]

don't forget to let us know which worked better ;)

[brainstorm]

Should I check option in Tmpgenc expert-advanced settings Deinterlace (none) for home made footage with MiniDv Interlace Cam

Thanks!

[Swan]

Should I check option in Tmpgenc expert-advanced settings Deinterlace (none) for home made footage with MiniDv Interlace
Leave it unchecked.