Slow Motion with Cinema Tools

A great tutorial for converting 50/60p footage to 25/24p for slow motion effects. Thanks Philip Bloom!

http://philipbloom.net/tutorials-1/how-to-turn-50p-and-60p-into-slow-motion-with-cinema-tools/

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Lux to EV Calculator

One of the great dilemmas with shooting video in caves is the limited amount of light available in an underground environment . . . none. You need an enormous amount of light to illuminate for video, which is fairly easy when you are above ground in the daylight or near an electrical source at night. When you are lighting a cave however that is in the middle of nowhere and requires miles of hiking to get to the entrance, traditional video light options are not at all practical. In fact, even standard portable video lights, can become an enormous burden when hiking several miles in the backcountry, and the amount of light output you get from these sources is no match for a large room.

In my ongoing search for a remedy I resorted to building my own video light with Luxeon Star 3 watt LED’s. The idea was that with LED technology I should be able to build a durable, light-weight source that would at least take the place of the heavier portable video lights. To make a long story short I succeeded in building a functional light, but the light output didn’t quite reach the intensity I had hoped for. I still need to run some tests in order to more precisely determine it’s output and compatibility with with my new video system, the Canon 7D.

In the mean time, below are some useful charts for those interested in converting Lux into EV. Many light manufacturers give you the output of their product in lux or lumens, which is nice to know, but since most photographers work in EV, apertures and shutter speeds, it is good to know how to convert these numbers into something that makes a little more sense. Enjoy.

EVApertureCalculator

EVLuxChart

IlluminanceExamples

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Interview with Director Brandon Kowallis

The website PornAddictHubby.com – Relationship Rescue for Wives and Girlfriends of Internet Pornography Addicts, recently interviewed Brandon Kowallis, the director, to talk about his film “Pornography, Confronting the Addiction” and pornography addiction in general. A transcript of the interview is available at www.pornaddicthubby.com.

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Caving Film Wins International Award

“Beneath the Broken Earth” recently won an honorable mention at the 2009 International Congress of Speleology Convention in Texas. This film follows a group of Utah Cavers in search of the United States deepest cave. To view a list of winners visit the ICS Media Salon Website.

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XHA1 1080i60 to DVD

Don’t you just love encountering obstacles along those unfamiliar roads that we filmmakers seem to travel on a fairly regular basis. I recently shot a film using the Canon XH-A1 set to 1080i60. I hadn’t used the camera much and due to the tight deadlines had little time to run any tests integrating the camera with Apple’s Final Cut Pro 6.0 and then outputting via Compressor and DVD Studio Pro. Boy was I in for a fun little challenge. Apart from issues capturing the footage (which will be addressed in another article), authoring to DVD became quite the learning experience.

Once I had completed the final edit, I figured the rest would be a piece of cake; export a self-contained Quicktime Movie, pop it into Compressor using the “DVD: Best Quality 90 Minute” folder preset, send the files to DVD Studio Pro, throw a simple menu together and Badaboom I have an amazing standard definition DVD that looks just as good as anything Universal or Disney could author. So I go through the process, my computer shoots out a DVD, I pop it in my cheap home DVD player and the video looks like a compression nightmare. The image was so pixelated I thought maybe I accidentally checked the “super duper low quality” check box in during one of the exports. Anyway, I quickly ran back to my computer checked my settings and everything seemed to indicate the quality was good, but a second attempted returned the same results.

At that point I began the painful process of trying different settings in each stage of the process. It took probably, 4 days of experimentation before I finally found something that worked. So to make a long story short here is what I did:

Step 1

From Final Cut I exported the final sequence as a Quicktime Self-Contained Movie. Using the following settings:

Exporting a Quicktime Movie from Final Cut Pro

Exporting a Quicktime Movie from Final Cut Pro

Export Quicktime Movie - The "Save" Dialog Box Settings

Export Quicktime Movie - The "Save" Dialog Box Settings

Step 2

From there I took the Quicktime file generated by FCP and opened it in Quicktime Pro. In QT Pro I exported the file once again, this time to a 1280 x 720 deinterlaced Quicktime file.

Export from Quicktime Pro

Export from Quicktime Pro

Export from Quicktime and Choose Options

Export from Quicktime and Choose Options

In the export dialog box I clicked on the options button to change the video settings and size, and the sound settings. Below are the settings I used:

Movie Settings in the Export Options for Quicktime

Movie Settings in the Export Options for Quicktime

 in the Export Options for Quicktime in the Export Options for Quicktime

in the Export Options for Quicktime in the Export Options for Quicktime

Export Size Settings in the Export Options for Quicktime

Export Size Settings in the Export Options for Quicktime

Sound Settings in the Export Options for Quicktime

Sound Settings in the Export Options for Quicktime

Step 3

In Compressor I used the MPEG-2 compression under DVD Best Quality for the 90 minutes since the video was less that 90 minutes. For my audio I used AIFF 48:24 although I wonder if 48:16 would have given me the same results. The file size is bigger than the Dolby 2.0 AC3 in the DVD folder, but the quality was noticably different from the AC3. For the distribution copy I did AC3 because I noticed that when I tried to play the DVD on in Windows Media Player the sound was 90% noise and absolutely horrific.

Compressor DVD Presets

Compressor DVD Presets

Compressor DVD Audio Presets

Additional Compressor DVD Audio Presets

From there I imported into DVD Studio Pro and went to work as usual, authoring the final project to DVD. In DVD studio Pro I noticed that adding drop shadows to the text helped reduce pixelation in the application generated text. I seems the best solution to the pixelation is to generate all element in external applications like Photoshop and Motion and then import them into DVD Studio Pro.

What a bugger.

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