Comments on: Canon HV20 24p Pulldown

By: admin

admin — Tue, 28 Aug 2007 06:33:53 +0000

> your howto looks very unprofessional.

Who said it was professional?

By: Michael

Michael — Tue, 28 Aug 2007 06:33:20 +0000

Please change “pulldown” to “reverse pulldown”, otherwise your howto looks very unprofessional.

Pulldown is the process of pulling full frames down to video. This is usually done with telecine machines, hence the name. Pulldown == telecine. Reverse pulldown == reverse telecine.

By: Roldan

Roldan — Tue, 28 Aug 2007 06:32:48 +0000

Eugenia,

Thanks for summarizing the many threads on this topic. I was thinking of doing this myself, for my own benefit, but I am glad you saved the trouble.

Thanks again for your putting this together.

By: admin

admin — Tue, 28 Aug 2007 06:32:22 +0000

Thanks Ron. That was the main reason I wrote this up in such detail, because none of the existing forum posts and tutorials were concise enough and with all the information in one place.

There are still things to fix though, e.g. if you use YUY12 with Lagarith instead of YUV2 or RGB, VirtualDubMod crashes during the process.

By: Ron K

Ron K — Tue, 28 Aug 2007 06:31:37 +0000

Great writeup! You included some steps that I hadn’t seen in some of the other write ups that allowed me to get this working. Thanks

By: JrezIN

JrezIN — Tue, 28 Aug 2007 06:30:58 +0000

Some apps call the procedure, “Pullup”, as Pulldown is used to ADD interlaced frames to a 24p source transforming (transforming 4 frames into 5) it into a 30i video… Or sometimes just “remove pulldown”.

3:2 or 2:3 is usually the difference for NSTC and PAL pulldowns, it’s about the order of frames (it’s only useful for removing pulldown or when you’re editing sources with pulldown… but do prefer to edit progressive material always when possible).

By: admin

admin — Tue, 28 Aug 2007 06:30:33 +0000

The only good is that if the playing-back or HD-DVD/Bluray burning application can’t read the file as 16:9, but only as 4:3. Other than that, there is no reason to use 1920×1080.

I tried a bunch of options on Mediacoder, but unfortunately none of the lossless codecs that VMS8 exports work with Mediacoder. I had to use mpeg4 or wmv to get it working, but that would mean that you would lose a ton of quality when you re-encode at 1920×1080. I will email the Mediacoder guys to add Lagarith support and to fix their 1920×1080 output support (it always errors out saying that it can’t mux the audio and video together).

Also, VMS8’s exporting options are buggy: I can’t set the anamorphic bit correctly on anything but WMV exporting.

By: JLH

JLH — Tue, 28 Aug 2007 06:29:51 +0000

great write up… too bad this wasn’t around when i was piecing together this information myself… would have saved me some time!

Can you take it one step further and explain how to transform the vegas output 1440×1080 file to 1920×1080 in mediacoder? and if/why this makes a difference in the final render? How is this difference than just selecting the 1:1.333 ratio in clip properties (right click on clip in vegas timeline)?

By: JBQ

JBQ — Tue, 28 Aug 2007 06:29:16 +0000

As usual, there’s an easy solution for MacOS but you need to have the right version of everything installed. For linux it’s about finding the right patch, applying it, compiling, and praying. For Windows, it’s possible, but oh so damn annoyingly tricky.