[Keith Slavin]

Hi Adam,

Since you already have a lot shot at NTSC60 interlaced, and your final deliverables are both ntsc60 and PAL50 interlaced, and if you have fast motion in the scenes, then it is better to stick with shooting at ntsc60 interlaced, and editing in interlaced. Then do a final standards conversion from 1080i59.94 to 1080i50 if required.

The main reason for this is that higher field/frame rates (i.e. higher temporal sampling rates) require less motion blur, and convert to other rates with high quality. Using 24p avoids standards conversion (if you accept a 4% speedup to 25p in 50i), but is associated with more motion judder or motion blur.

1080i59.94 is the best capture candidate (other than 1080p59.94), as it gives the best quality conversion to any lower frame rate (50i/p, 48p, 30p, 25p and 24p, for example)! See more detailed discussion on the topic from https://www.isovideo.com/Shooting_FPV.php.

To avoid unpleasant motion judder when going to significantly lower temporal sampling rates, high quality simulated motion blur also needs to be added.

Our state-of-the-art Viarte server provides the best quality standards conversion available. The Viarte server was used for file-based Footage Conversion in two times Academy-Award winning director Ron Howard’s “Made in America”.

If you are interested in trying our conversion, please contact me at keith@isovideo.com.

[Keith Slavin]

Hi Shannon,

If you are looking for Blu-ray quality conversion results? If your original footage was shot at 1080i59.94, and your master is pristine, then you may want to check out isovideo’s Viarte – the award winning standards conversion/transcoding solutions at https://www.isovideo.com/viarte_breakthrough_solution.php.

The Viarte server was used for Footage Conversion in two times Academy-Award winning director Ron Howard’s “Made in America”. See https://www.isovideo.com/press_915.php.

We should be able to get a movie-length conversion completed in 2-3 days.

If you are interested in trying us out, you could contact me at keith@isovideo.com. We also offer a limited free trial.

[Keith Slavin]

Hi Jerry,

Not sure your XAVC file conversion with scale problem is solved by now or not? In case you still need some help, you may want to check out isovideo’s Viarte standards conversion/transcoding services at https://www.isovideo.com/services.php. We could transcode your XAVC files to prores HQ for example and scale them at the same time (up to 2000 files can be handled with a single command).

You may want to check out our scaling examples at https://www.isovideo.com/rescape.php and many Viarte conversion examples at https://www.isovideo.com/viarte_conversion_examples.php. Viarte was one of five prestigious Game-Changer Awards winner by the IABM and NAB 2013, and the Viarte server was used for Footage Conversion in two-time Academy-Award winning director Ron Howard’s new concert documentary “Made in America”.

We will soon be lunching a 4k workflow collaboration program using Viarte, if your are interested and image quality is high, we could do the conversion for you for free.

[Keith Slavin]

Hi Alex,

Looks like you need high quality frame-rate conversion from 29.97p to 23.98p. isovideo provide fast turn-around, professional superior quality standards conversion/transcoding services (see https://isovideo.com/services.php) based on our 2013 IABM/NAB Game-Changer Award-winning Viarte server. We recently used Viarte for footage conversion (59.94i to 23.98p) for Ron Howard’s “Made in America” documentary, which was world premiered at the Toronto International Film Festival on September 7, 2013. See details from https://isovideo.com/press_915.php. If you are interested in trying out our service, you could send email to keith@isovideo.com. We could run a quick test and see if it works for you.

Best,
Keith

[Keith Slavin]

Hi Paddy,

If you do not want to distort audio in any way, the best option is to use a high quality frame-rate conversion tool to convert your footage to one common frame-rate (29.976p definitely needs proper frame rate conversion). It is best to choose a frame-rate that is your final deliverable frame-rate (25p in your case).

We offer high quality standards conversion/transcoding services https://isovideo.com/services.php, based on our Game-Changer Award-winning Viarte server. If you are interested in trying out our service, you could send email to keith@isovideo.com. We could run a quick test and see if it works for you. By the way, Viarte was used for footage conversion (59.94i ->24p) in Academy-award winning director Ron Howard’s concert documentary “Made in America”.

[Keith Slavin]

Hi Paddy,

You certainly can shoot at 50i and deinterlace and down convert to 25p, and add simulated accurate motion blur to reduce judder. Shooting at 50i, the motion processing can be more accurate for adding blur than when adding it at 25p. This approach has the advantage of being able to convert to other frame-rates more accurately. If you can increase the shutter angle at the camera, it will similarly reduce motion judder, but it is harder to convert to other rates.

You may also want to check out our article of “Frame-Rate Options for Shooting “Future-Proof” Video” from https://www.isovideo.com/Shooting_FPV.php

[Keith Slavin]

Hi Steve,

That is correct. No, its not available on the Mac, but we will prove it works by converting a couple minutes worth of footage for you if you want.

[Keith Slavin]

Hi Steve,

isovideo has very high quality frame-rate conversion as part of our Viarte standards conversion/transcoding service. Viarte was a 2013 NAB/IABM game-changer award winner. Our motion technology is not disturbed by light changes, scene cuts, or cross-fades, and has been used for footage conversion in Ron Howard’s “Made In America” (59.94i->24p), which is full of dramatic rock concert light strobing effects. We are offering to do a limited free trial. If you would like to try it, please contact me: keith@isovideo.com

One example of 2:1 upsampling with simple cuts:

https://isovideo.com/Legato_60Hz_refresh/aspen_1920x1080_30_60_60.flv

and cross-fades:

https://isovideo.com/Legato_60Hz_refresh/controlled_burn_1920x1080_30_60_60.flv

Best

[Keith Slavin]

Hi Mark,

If you still have trouble converting your file, you may want to check out isovideo’s 2013 NAB/IABM Game-Changer Award winning Viarte standards conversion/transcoding services at https://www.isovideo.com/services.php. We have a lot more control over conversion/transcoding process (quality, speed, formats, etc). We are also offering a generous free trial as well, if you are interested, please contact me at keith@isovideo.com.

Best

[Keith Slavin]

Hi David,

In my opinion, it is best to minimize the number of transcodes, and use as many bits as possible on each pass – isovideo does 10-bit transcoding I/O on Viarte for example, and even more (16-bit internal computations) for standards conversion, including scaling. In general, each time you transcode, you will lose some image quality due to lossy compression (unless you use lossless compression). Therefore it is good practice to conform all your frame-rates and sizes before doing audio mix and color.

Best
Keith