Disney Introduces Automatic Editing of Footage from Multiple Social Cameras

Disney has created an system of automatically cutting multiple camera angles using computer algorithms.

We present an approach that takes multiple videos captured by social cameras that are carried or worn by members of the group involved in an activity—and produces a coherent “cut” video of the activity. Footage from social cameras contains an intimate, personalized view that reflects the part of an event that was of importance to the camera operator (or wearer). We leverage the insight that social cameras share the focus of attention of the people carrying them. We use this insight to determine where the important “content” in a scene is taking place, and use it in conjunction with cinematographic guidelines to select which cameras to cut to and to determine the timing of those cuts. A trellis graph formulation is used to optimize an objective function that maximizes coverage of the important content in the scene, while respecting cinematographic guidelines such as the 180-degree rule and avoiding jump cuts. We demonstrate cuts of the videos in various styles and lengths for a number of scenarios, including sports games, street performance, family activities, and social get-togethers. We evaluate our results through an in-depth analysis of the cuts in the resulting videos and through comparison with videos produced by a professional editor and existing commercial solutions.

Disney Research | Read the Full Article


How Shotgun Microphones Work

How do shotgun mics achieve such a tight polar pattern compared with other designs? And how come they seem to be getting shorter every year?

Shotgun Mic

Shotgun or rifle mics are more properly called ‘Interference Tube’ microphones, and they are often assumed to have magically tight polar patterns that simply don’t exist in reality. Shotgun mics do have their uses, of course, but have to be used intelligently to avoid the significant compromises associated with them.

All shotgun mics employ a standard directional capsule — usually a supercardioid — but with a long, hollow, slotted ‘interference tube’ attached to its front surface. Although this arrangement inherently moves the capsule further away from the sound source — thus making the direct/reverberant ratio slightly worse — the hope is that the tighter directionality (at high frequencies), which reduces the ambient noise, outweighs this disadvantage.

The idea of the interference tube is that the wanted on-axis sound passes straight down the length of the tube to the capsule diaphragm unimpeded, but the unwanted off-axis sound has to reach the diaphragm by entering the side slots. Since this unwanted sound will enter multiple slots, and the distances from those slots to the diaphragm vary, the off-axis sound will arrive at the diaphragm with varying phase relationships and so partially cancel one another out — this is why it is called an ‘interference tube’! Consequently, off-axis sounds are attenuated relative to the on-axis sounds, and hence the polar pattern is narrower towards the front than would be possible with a simple super-cardioid mic on its own

Sound on Sound | Read the Full Article

Memory cards: How to Choose and Use the Right Storage Device for your Camera

In this jargon-free guide we’ll explain everything you need to know about choosing and using all the different types of memory cards for cameras.

Memory Cards

It’s easy to take your camera’s memory card for granted. However, you only have to go into a camera shop to realise that memory cards come in a bewildering array of sizes, formats and speeds.

It’s easy to work out what memory card format you need – unless you shoot with the Nikon D4s, it’s either Compact Flash or SD.

As far as capacity is concerned, your camera’s LCD display will tell you how many images you can save on your current memory card.

If you shoot raw files, which we usually recommend, you’ll need more storage space, but a 16 gigabyte card should be enough, although individual needs will vary.

Understanding memory card formats

Compact Flash is the oldest memory card format still in use. They’ve disappeared from most beginner and enthusiast DSLRs, but are still going strong in the top-end pro models.

They come in two types, and Type I cards fit all cameras. Type II cards are fatter, and are no longer made or supported.

Most Type II ‘cards’ were a clever but fragile miniature hard disk ‘MicroDrive’ design, but solid state Type I cards have long since outstripped the capacity of Type II cards.

SD cards are the most common memory cards for cameras, and are used across most camera ranges range except for in top-end pro models.

Although all SD memory cards are physically the same, there are three types. SD cards are the oldest and will work in any camera with an SD card slot.

Digital Camera World | Read the Full Article

The History of Sound at the Movies – A Sneak Peak at our New Audio Course Series and RØDE Microphones are proud to give you a sneak peak at the first lesson in our six part course which will cover science/microphones, recording, editing, foley, and ADR. We are also hard at work behind the scenes updating the site to include even more interaction which should be live in the coming weeks. Until then – enjoy this lesson on the history of sound at the movies.

The inclusion of sound at the movies was one of the most dramatic changes in all of film history. Dive into the early experiments of Edison trying to incorporate sound from film’s inception, through the experiments in the early 1920s, the Jazz Singer and the industry sound overhaul, and finally the multi-channel surround and modern movie sound technologies.


Create Shooting Schedule with Google Calendar

When organizing your project, you’ll need to know when your cast and crew is available, so you can drop them into a shooting schedule. This lets you see when you are shooting what scenes, and what actors are involved. Here is a simple method on how to do this using the free program, Google Calendar. Via thefrugalfilmmaker



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