O Z O L I V E

O Z O B e s t P r a c t i c e s

Best Practices for Live 360 Video

VR is a new medium, and live 360 video production is perhaps the most intense, stressful, andgratifying way to create VR content. As always, careful planning will reduce risk and help ensurethat the production goes smoothly. In this section we share some of our early experiences with360 video productions using OZO Live.

Many aspects of live 360 production are shared with standard live video production; these areout of scope for this document. Our focus is on the unique aspects of 360.

Camera Placement

Camera placement is everything. Get as close to the action as you can! Sometimes, as in the firstimage, that means you're pretty far away:

Sometimes it means you're up close and personal!

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Always fight for camera placement.360 video works when the camera is close to the subject; itbecomes boring when the camera is far away. (OZO's award-winning design makes it easier toconvince reluctant producers to give you prime placement: It's the single most important thingyou can do to make a compelling production.)

Moving Cameras

Moving cameras in 360 adds dimension and interest to a live production. While fast or unevenmotion can definitely be uncomfortable at best, when used correctly, motion adds enormousdepth and interest to your productions. OZO's excellent stereo capabilities provide high-qualitybinocular parallax in addition to motion parallax, providing a compelling sense of immersion.With OZO Live's digital pan feature, you can maintain the user's viewing direction even whenusing jibs and booms that lack automatic pan control. Please try out jibs, booms, dollys, andother motion platforms with OZO Live: you wont be disappointed!)

Multi-camera Direction

Like multi-camera television shows, 360 video productions are much more compelling with askilled director managing the viewers' attention across multiple camera viewpoints. Try out thefollowing best practices for multicamera shoots – although we also recommend that youexperiment and draw your own conclusions!

Hard cuts are usually disconcerting for headset users. Start with a 1/2 second crossfadeand season to taste.

Use OZO Live's digital pan to set the most salient point of a camera's feed at the centerof the frame before you switch to it. This feature is super effective when used to matchviewpoints before switching.

OZO Live imposes a 1 second delay on what the director sees. He or she needs toanticipate this delay in commands to jib operators, who operate in real time.

Monitors for each camera are nice, but you don't strictly need them - after all, any camerafeed shows you the entire scene in equirectangular view. With a little practice it's possibleto direct from the program feed alone.

OZO Live gives you all the tools you need to integrate into your regular broadcastworkflow. Use all the tricks of the trade you're used to.

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OZO Camera Usage Tips

Rain

OZO is not waterproof. However, with care, even under heavy rain (and some wind) you canproduce a successful event.

The two areas where water infiltration is a risk are at the buttons on the top of OZO, and thecable connections on the underside. Use clear packer's tape to cover the buttons; you'll still beable to use them. Also, wrap tape around your cables, sealing them to the body - this area isalready protected by the camera itself and would only be a risk in a hurricane!

Keeping rain off the lenses is another matter. We've had success by using a half-meter square ofPlexiglas, mounted above the camera using a Magic Arm. This can be angled to protect thecamera from driving rain. The rain shield is visible, but it's not as distracting as you might think: ifyou angle it correctly you can keep it out of a typical user's viewport for a typical production, andany raindrops on the shield are so close to the camera they're out of focus. An example:

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Cold

OZO behaves well in cold environments; no special measures should be necessary even whenoperating at temperatures well below its 0° specification.

Heat

Heat requires management: OZO does not like direct sunlight. Follow these steps to avoid aheat-related shut down:

Get a fan! Some OZO resellers make integrated fans that have proven to be supersuccessful in multi-camera festival shoots. Contact OZOsupport@nokia.com for moreinformation.

Avoid direct sunlight if possible. The camera's black body absorbs radiant heat. In theshade the camera can generally handle high ambient air temperatures, but in directsunlight temperature can become an issue.

Remove the battery pack. This reduces power usage slightly and improves cooling.

Make sure you're using 4-sensor mode. This should always be the case for OZO Live.

Shut down the camera when not in use. At the least, turn off broadcast.

Cover the camera with a reflective shield or blanket when not in use.

Managing Difficult Scenes

LED Light Flicker. Indoor scenes for sports and concerts are often lit using LED lighting. In somecases the refresh rates on these lights will cause flickering. This is a common problem across alldigital sensor technology. To reduce or eliminate this effect, try reducing the OZO camerashutter speed as low as you can – this will allow more LED refreshes to occur during a singleshutter, and can reduce or eliminate flickering. If that approach is insufficient, be sure to enablethe temporal noise reduction in OZO Live. This should help as well. As a last resort, you canoverexpose the image and compensate with color correction within OZO Live.

Direct Sunlight. When outside, you might get direct sunlight on one or two sensors, causingcolor variation. You can compensate for this using the per-lens color correction capability withinOZO Live. (Avoid using the auto white- and black-balance features in these cases).

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Audio for Live 360

Audio is an essential component of the immersive 360 video experience: While our eyes give usabout 110°, or 170° if we turn our heads fully, our ears allow us a full 360° of immersion.

OZO Live provides the user with multiple audio solutions:

The Nokia OZO family of products provides fully immersive, spatial audio experiences. Like all ofOZO Live, there are multiple ways to integrate the system into your workflow. For instance, if youare looking for a single-camera experience using only OZO ambient audio, you can choose fromamong these formats:

Loudspeaker 2.0

Loudspeaker 5.1

Loudspeaker 7.1

Binaural

Ambisonics (first order)

Pass through (8ch 48kSpS 24bit)

You can opt to De-Embed OZO audio before it reaches OZO Live, mixing externally and re-embedding into OZO Live via SDI before you send your feed to the encoder.

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Some Conguration Examples

One OZO, one encoder, external audio only

Create mix with external mixer

Embed audio upstream of OZO Live

Configure OZO Live for passthru

Multiple OZOs, OZO ambient audio only

Audio from OZO Live

Switch audio along with camera

Trigger scenes on mixer

Multiple OZOs, external audio only, unswitched

Separate mixes for each OZO

Requires 6 output busses per OZO (This becomes your main constraint on the number ofcameras you run!)

Embed audio upstream of OZO Live

Configure OZO Live for passthru.

Delay not required.

Multiple OZOs, ambient audio PLUS external audio mix

De-embed OZO audio downstream of OZO Live

Delay all external audio by ~1 sec

Separate fixed mixes for each OZO (mixing both ambient and external)

6 output busses required per camera

Re-embed 5.0 audio downstream of the switcher

Slave the audio mixer to the video switcher

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S u p p o r t

The entire OZO team wants to make sure your experience with OZO Live is awesome. We areready to help, and are eager for your feedback.

OZO Live Forum

The OZO Live Forum is a place for OZO Live users and partners to exchange information. It maybe found as part of the "Support and Community" section of the Nokia OZO website, athttp://support.ozo.nokia.com/

Support

Registered users of OZO may access the OZO Support team via email atOZOsupport@nokia.com or online form at https://ozo.nokia.com/ozo_en/contact/. Customersupport requests will be responded to within 24 hours.

It helps the whole community if you report any issues you find with OZO Live. Please runfollowing command in the folder that you ran the ozo_live application.

$ sudo /opt/nokia/ozo_live/bin/report.sh

Or go to the Support Tab and click Download Report:

Report_201610281154.txt.gz is generated, please attach the file in the support request

Then you will see report_xxxx.txt.gz in the same folder. Attaching this file to your supportrequest will help the support team diagnose your issue quickly and efficiently.

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L e g a l I n f o r m a t i o n

OZO Live ships with both third-party and open source software. A listing of the open sourcesoftware and the accompanying license terms is included in a .txt file in the software package.Please read the applicable license terms, listed here:

https://ozo.nokia.com/ozo-live-licensing-terms

Your use of the Licensed Software is only permitted if you comply with the terms and conditionsof the open source software licenses included in the .txt file.

Copyright © Nokia Technologies Ltd. and/or its subsidiary(-ies).

This OZO Live software, including the accompanying documentation, is protected by copyrightcontrolled by Nokia Technologies Ltd. All rights reserved. Unless you have signed an individuallynegotiated license agreement with Nokia, the license terms applicable to your use of thissoftware are available at:

https://ozo.nokia.com/ozo-live-product-license-agreements

If you have signed an individually negotiated license agreement with Nokia, the terms containedin that license agreement shall govern your use of this software.

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