undersampling DV PAL 25fps to 24fps at DVinfo.net

Ali Jafri · August 14th, 2009, 01:46 AM

Hi, just wanted to run this by you guys - I have DV PAL footage which I shot with an FX1 and cut on Vegas 9. My question is: if I undersampled the playback rate from 25fps to 24fps and rendered it would it do anything to the footage in terms of making it look less like video? I've also deinterlaced the footage before putting it on the timeline. The effects can't be seen on a computer monitor but wondering if anyone has any experience of doing this for SD broadcast.

Also, if broadcast is 25fps would that sample the video back to 25fps from 24?

What about web streaming? Will it have any effect on sites such as Vimeo and YouTube?

Hope to get some insights!

Craig Parkes · August 14th, 2009, 03:43 PM

Hi Ali, the difference between 25FPS and 24FPS is insignificant in terms of look.

What will make a bigger difference is deinterlacing the video so it has a progressive look, or if it was shot progressive, playing back the video on a progressive timeline.

Other than this the 'video look' is mostly not to do with frame rate, it is to do with lighting, dynamic range of the recording medium, quality of shooting, overall production value etc.

August 14th, 2009, 01:46 AM	#1
Ali Jafri Major Player Join Date: May 2008 Location: Karachi, Pakistan Posts: 210	undersampling DV PAL 25fps to 24fps Hi, just wanted to run this by you guys - I have DV PAL footage which I shot with an FX1 and cut on Vegas 9. My question is: if I undersampled the playback rate from 25fps to 24fps and rendered it would it do anything to the footage in terms of making it look less like video? I've also deinterlaced the footage before putting it on the timeline. The effects can't be seen on a computer monitor but wondering if anyone has any experience of doing this for SD broadcast. Also, if broadcast is 25fps would that sample the video back to 25fps from 24? What about web streaming? Will it have any effect on sites such as Vimeo and YouTube? Hope to get some insights! __________________ Windows 7 Ultimate 64-bit // i7 2600K // 16GB RAM // ASUS P8P67 Board // NVIDIA GTX 470 Sony Vegas Pro 13 // Adobe Premiere Pro CC 2014 // http://vimeo.com/alijafri Last edited by Ali Jafri; August 14th, 2009 at 02:24 AM. Reason: added Vegas version

August 14th, 2009, 03:43 PM	#2
Craig Parkes Major Player Join Date: Dec 2006 Location: Auckland, New Zealand Posts: 444	Hi Ali, the difference between 25FPS and 24FPS is insignificant in terms of look. What will make a bigger difference is deinterlacing the video so it has a progressive look, or if it was shot progressive, playing back the video on a progressive timeline. Other than this the 'video look' is mostly not to do with frame rate, it is to do with lighting, dynamic range of the recording medium, quality of shooting, overall production value etc.