Multi-Capture Video Analysis and Live Streaming

This document provides instructions for a Multi-Camerasetup involving up to four cameras and how to utilise these for Multi-Capture Video Analysis and Live Streaming. The document also provides some information on the additional hardware demands of Multi-Captureand the possible negative impacts if a computer’s CPU is consistently maximised during Multi-Capture. 

As per a single camera setup, use the Tools -> Configuration -> Video Capture-> Video Capture Devices-> Add new Capture Devicefunction to add up to four camera inputs, i.e.:

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Open the Multi-Cam Audio Settings dialog, apply the required audio settings (e.g., Use Primary Input for all Audio to use the first camera’s audio across all cameras), and click Save. Please note that Disable External Audio on Individual Inputs is enabled by default, but if Use Primary Input for all Audio is ticked this audio will be enabled across all camera inputs. 

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Open the Multi-Cam Video Settingsdialog to apply the required settings for each camera, as follows:

  • Click in the Label box to give each camera name, rather than just Input 1, Input 2, etc, that will display on the control buttons underneath the Video Display window (click away to save)
  • Select the Pitch End for two of the cameras from the dropdown arrow
  • Tick the Capture checkbox to enable continuous capture and ball clipping from this camera
  • Tick the Instant Replays checkbox to enable each camera to be used for live streaming replays 
  • Tick the Automatically switch cameras at the end of each over checkbox to automatically switch between the two nominated end-cameras at the end of each over (disabled by default)
  • The Save the switched continuous capture file and ball clips checkbox is enabled by default, to save the switched video feed and associated switched ball clips, but untick this if it is not required:

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Once complete, click OK to exit this dialog and OK again to exit the Video Capture dialog. The Video Display window will take a few seconds to update with all camera inputs and the Input/Label buttons underneath. These can then be used to control the ‘switched’ camera feed in Video Display

To view all camera inputs simultaneously, open the View -> Video -> Multi-Cam Video Display panel, which contains a thumbnail view for each. The ‘switched’ camera feed will be highlighted in yellow, and these thumbnails can also be used to control the ‘switched’ camera feed in Video Display. An Enable Capture button will be displayed at the bottom right of any camera input that does not have the above Capture checkbox ticked, so click this to re-open the Multi-Cam Video Settings dialog to update this setting. 

Similarly, once a live stream has been started an Enable Replays button will be displayed at the bottom-right of any camera input that does not have the above Instant Replays checkbox ticked, so click this to re-open the Multi-Cam Video Settings dialog to update this setting. Once enabled, on each of the camera inputs this button will show as Last Ball with a dropdown arrow for Last Ball, Last Ball (Slow-mo), Instant Replay, and Instant Replay (Slow-mo) options.

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The required replay optioncan be selected from any input to trigger the replay, preceded as usual by any configured replay activation, into the live stream. If there is enough time between balls/overs or wicket/drinks breaks, multiple Last Ball replays of the same ball from different camera inputs can be shown. 

To begin the recording of Continuous video from all camera inputs, click the Start Live Capture button, as usual. Whether using Auto Capture or manual ball clipping, each ball clip will be recorded from all camera angles that have Capture enabled, resulting in up to four clips per ball. However, currently only the ‘switched’ ball clips are encoded and uploaded, to minimise load on the computer’s CPU%, so only this clip (or, if the ‘switched’ feed isn’t being saved, the ball clip of the selected camera input) will be available on the Match Centre and Match Portal.

While recording Continuous video from multiple camera inputs, the ‘switched’ Continuous is the one that will be shown in the Video Timeline, with the ball clips appearing on this as usual. After recording has finished, the Continuous video from other camera inputs can be loaded into the Video Timeline by selecting them from the new camera input dropdown, next to the Continuous Video dropdown (from which previous Continuous videos can be selected, as usual), i.e.:

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If a ball clip on the ‘switched’ Continuous video is scrubbed live during recording, the corresponding ball clips on the other Continuous videos will be scrubbed to match. Similarly, if a ball clip is scrubbed on any of the Continuous videos after recording, the corresponding ball clips on all the other Continuous videos will also be scrubbed to match. As above, only the scrubbed ‘switched’ ball clip will be re-encoded and re-uploaded. 

In a Multi-Camerasetup, the Video Player will include the thumbnails of/ the Multi Angle clipsat the top-right and can be played back by clicking the thumbnail: 

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Ball clips can still be accessed from all the same places, e.g., Ball by Ball, Video Ball by Ball, Scorecard, Match Stats Wizard, etc. All other Video Player features are also still the same, e.g.,Stop, Play/Pause, Frame by Frame, Mute, Full Screen (with arrow key controls), Drawing Tools, Add to Package, Save Clip, etc. 

 

Video Package Manager and Match Portal

Please note that support for Multi-Angle clips has not yet been added to the Video Package Manager feature or the Match Portal. Consequently, Multi-Angle clips can only be viewed within NV Play Pro Cricket Scorer/Play-Cricket Scorer Pro, so Video Package Manager will always use the 'primary' clip for each ball, and only this ball clip will be viewable in the Match Portal. 

 

Additional Resources Warning and Negative Impact if CPU Maxed

Finally, users must be aware that running a Multi-Camera setup does require additional computer resources, so it may be impractical on some machines. Please check ourrecommended minimum hardware specifications, especially the fourth“Premium Video Capture, Premium Live Streaming, and Multi-Camera Inputs section, i.e.:

  • Quality brand to ensure solid internals
  • No more than 3 years old
  • Windows 10 or 11 Home, Professional, or Enterprise operating system (but not Windows 10 in S mode)
  • Intel i7 or i9 CPU, 8th Generation or newer (but not laptop models ending in U or Y, which are designed for low power use, where H is best for high performance), with 16GB RAM
  • A higher end NVIDIA Graphics Cards which supports Video Encoding - confirm by searching this website, checking for green YES values:
  • https://developer.nvidia.com/video-encode-and-decode-gpu-support-matrix-new (e.g. the NVIDIA GeForce 1660 Ti graphics card would be suitable, but the NVIDIA GeForce MX350 would not be suitable, for Video Encoding)
  • For premium video features we recommend NVIDIA Video Cards such as NVIDIA RTX 3050 or higher
  • 1TB SSD Drive (for storing ball clips, multiple continuous videos, and highlights packages)
  • Full HD screen (1920x1080) preferred

While initially using Multi-Capture, we recommend that users monitor the View -> Video -> Live Video Statistics panel for key information on laptop, video, internet, and network performance, to assess the suitability of their hardware; i.e., this information is shown in black (healthy/good) rather than red (unhealthy/poor). Users should also be familiar with these two documents:

https://support.nvplay.com/hc/en-gb/articles/8418563776025-Network-Monitoring-and-Health-Reports

https://support.nvplay.com/hc/en-gb/articles/9760977564825-Troubleshooting-Video-Input-Issues-Aug-2022-

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