50i to 24p Conversion Help at DVinfo.net

Ari Shomair · May 12th, 2005, 07:49 PM

I've been search through the forums but can't find an answer, so please give me a quick hand ;)

I'm shooting a documentary with a Sony PDX-10 PAL this summer, which shoots at 50i. I'm looking at possibly renting a DVX100A as well, and am looking at methods to convert 50i to 24p. I understand that DVFilm maker will convert 50i to 25p, and a ~3% slowdown is then require for 25p to 24p. Is there any software used specifically to do the slowdown, or should just any NLE do it?

Thanks
Ari

Jon Laing · May 12th, 2005, 07:56 PM

i know fcp can do the slow down. just click on the clip, hit apple-j (for us mac users) and then type in 97% in the window that pops up. should be all thats necissary.

Ari Shomair · May 12th, 2005, 08:54 PM

I'm not an apple user unfortunately :( Any PC solutions?

Leigh Wanstead · May 12th, 2005, 09:26 PM

Magic Bullet

Joshua Provost · May 13th, 2005, 01:09 PM

Ari,

Everything I read, on this forum and elsewhere says just convert to 25p, and use that for PAL DVD or broadcast. You only need to go to 24p is you are doing a filmout, in which case the filmout lab will want your 25p footage, and will slow it down for you.

If you want to do it yourself, I believe After Effects will allow you to interpret the 25p footage as 24p, adjust the audio speed, and output 24p.

Josh

Dominic Jones · May 14th, 2005, 06:04 AM

Joshua is correct.

You do not need any software to "do the slowdown". You simply interpret the footage as 24p, which inherently makes it run around 4% slower on screen. This difference is not noticable. The audio is what needs processing to adjust for the change in pitch as it is played back 4% slower to match - I use SoundForge, but any decent wave editor will do you.

John McManimie · May 16th, 2005, 04:42 PM

DVFilm's Atlantis is probably the best choice: http://www.dvfilm.com/atlantis/index.htm

Canopus Procoder does a pretty decent job as well.

There is also Nattress Standards Conversion for FCP.

Ari Shomair · May 16th, 2005, 04:58 PM

I tried out DVFilm Atlantis - it can't convert 50i to 24p as far as I could tell.

Joshua Provost · May 16th, 2005, 05:21 PM

Atlantis won't directly convert 50i to 24p, but it will convert 50i to "film-motion" 60i. That's 24p embedded in 60i. You can use DVFilm Maker to then extract the 24p from the 60i. It's a couple of steps, but it will probably get you where you want to be.

Josh

May 12th, 2005, 07:49 PM	#1
Ari Shomair Major Player Join Date: Dec 2003 Location: LA, California, USA Posts: 224	50i to 24p Conversion Help I've been search through the forums but can't find an answer, so please give me a quick hand ;) I'm shooting a documentary with a Sony PDX-10 PAL this summer, which shoots at 50i. I'm looking at possibly renting a DVX100A as well, and am looking at methods to convert 50i to 24p. I understand that DVFilm maker will convert 50i to 25p, and a ~3% slowdown is then require for 25p to 24p. Is there any software used specifically to do the slowdown, or should just any NLE do it? Thanks Ari

May 12th, 2005, 07:56 PM	#2
Jon Laing Regular Crew Join Date: Mar 2005 Location: Wall, NJ Posts: 31	i know fcp can do the slow down. just click on the clip, hit apple-j (for us mac users) and then type in 97% in the window that pops up. should be all thats necissary. __________________ --Devereaux ]:-( ---> http://geocities.com/anarchist_lb

May 13th, 2005, 01:09 PM	#5
Joshua Provost Major Player Join Date: Sep 2004 Location: Phoenix, AZ Posts: 493	Ari, Everything I read, on this forum and elsewhere says just convert to 25p, and use that for PAL DVD or broadcast. You only need to go to 24p is you are doing a filmout, in which case the filmout lab will want your 25p footage, and will slow it down for you. If you want to do it yourself, I believe After Effects will allow you to interpret the 25p footage as 24p, adjust the audio speed, and output 24p. Josh __________________ Owner/Operator, 727 Records Co-Founder, Matter of Chance Productions Blogger, Try Avoidance

May 16th, 2005, 05:21 PM	#9
Joshua Provost Major Player Join Date: Sep 2004 Location: Phoenix, AZ Posts: 493	Atlantis won't directly convert 50i to 24p, but it will convert 50i to "film-motion" 60i. That's 24p embedded in 60i. You can use DVFilm Maker to then extract the 24p from the 60i. It's a couple of steps, but it will probably get you where you want to be. Josh __________________ Owner/Operator, 727 Records Co-Founder, Matter of Chance Productions Blogger, Try Avoidance

May 12th, 2005, 08:54 PM	#3
Ari Shomair Major Player Join Date: Dec 2003 Location: LA, California, USA Posts: 224	I'm not an apple user unfortunately :( Any PC solutions?

May 12th, 2005, 09:26 PM	#4
Leigh Wanstead Trustee Join Date: Apr 2004 Location: NZ Posts: 1,276	Magic Bullet

May 14th, 2005, 06:04 AM	#6
Dominic Jones Major Player Join Date: Mar 2005 Location: Brighton, England Posts: 225	Joshua is correct. You do not need any software to "do the slowdown". You simply interpret the footage as 24p, which inherently makes it run around 4% slower on screen. This difference is not noticable. The audio is what needs processing to adjust for the change in pitch as it is played back 4% slower to match - I use SoundForge, but any decent wave editor will do you.

May 16th, 2005, 04:42 PM	#7
John McManimie Major Player Join Date: Mar 2004 Location: Portland, OR Posts: 314	DVFilm's Atlantis is probably the best choice: http://www.dvfilm.com/atlantis/index.htm Canopus Procoder does a pretty decent job as well. There is also Nattress Standards Conversion for FCP.

May 16th, 2005, 04:58 PM	#8
Ari Shomair Major Player Join Date: Dec 2003 Location: LA, California, USA Posts: 224	I tried out DVFilm Atlantis - it can't convert 50i to 24p as far as I could tell.