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Step 2: Volumetric Video Post-Processing

After you investigated your volumetric video in the live-preview and decided that everything was captured just as you expected, it’s time to edit the timeline and post-process your video. You can upload it into various platforms, for instance, EF EVE™ Platform, Unity Project or other 3D editing software. In the…

After you investigated your volumetric video in the live-preview and decided that everything was captured just as you expected, it’s time to edit the timeline and post-process your video. You can upload it into various platforms, for instance, EF EVE™ Platform, Unity Project or other 3D editing software.

In the first part of this article we will introduce you to the timeline editing. Second part will be a description of post-processing for Unity project. In conclusion we will show some tips for uploading to EF EVE™ Platform.

Editing the Timeline

  • In the bottom left corner you can see the file info bar for the Timeline. You may check camera numbers and original FPS count from each camera.
Original volumetric video file details in the bottom left corner
Volumetric video editing timeline on EF EVE Creator
  • You can navigate through your Timeline by hovering your mouse on the frames area and scrolling your mouse wheel back and forth:
Hovering your mouse and scrolling to navigate the volumetric video timeline
Volumetric video timeline navigation on EF EVE Creator
  • In the Timeline there are 4 rows of frames, each one for different camera.
Each row in the timeline represents data from different depth camera
Each row is for data from separate depth cameras
  • You can turn off some cameras by removing a checkmark in the Active column:
Selecting active 3D cameras on the timeline
Active depth cameras on EF EVE Creator timeline

Keep in mind that if you deselect a camera or do other changes to the timeline, these changes will apply to your exported volumetric content.

  • First of all, you can select only a part of your volumetric capture to be exported. To do so, you should move the trim tool to the frames on which your video should begin and end.
Trim a part of your video which you want to export.
Trim tool allows you select certain frames that you want to export

The more frames you select, the heavier your file will be. The heavier your file, the longer it will take to export.

  • Meanwhile, if it looks like a part of your video is lagging, try to move one of your volumetric video files (2 rows in the Timeline) back by one frame. To move the row, click + drag any frame in the row:
Adjusting frames in the timeline of EF EVE Creator
Adjusting volumetric video frames to avoid discrepancies

Sometimes all cameras start at different times, therefore a part of video may seem to be lagging. All you need to do is move the frames for one of the files and they will line up

Adjusting the frames in EF EVE Creator Timeline helps to line-up the video.
Volumetric video after the frames are adjusted

Post-processing your volumetric video

From this point, every step you make will appear on your exported volumetric video.

If you want to export your volumetric video into a Unity project, you need to follow one path. If you also want to upload it to EF EVE™ Platform, you will need to do a few more steps. First of all, we will explain the steps for the Unity project:

  • Go to the Post-processing tab at the top left corner:
Post-processing volumetric video
Post-processing volumetric video
Watertight mesh of volumetric video
Generate watertight mesh for volumetric content

Watertight mesh programmatically fills in the “holes” which were not captured by your depth cameras (lack of data). Keep in mind that the Watertight Mesh takes a lot of computing power to generate. It may add a few hours to your export time, so use it wisely.

Exporting the volumetric video will take some time depending on the post-processing settings you selected. However, if you want to see how it will look like, you can render only one frame in a few minutes to check out if you like the result.

  • Select one frame by clicking it on the Timeline:
One frame selected by clicking on the timeline
One volumetric video frame selected
  • At the bottom of the post-processing menu, click the button “Render”
Volumetric video rendering
Rendering one frame of your volumetric video
  • Wait until Rendering Frame pop-up load all the bars
Progress bars show volumetric video rendering progress
Volumetric video rendering in progress
  • As a result, in the Render tab your one frame will appear with all the post-processing settings applied. You can turn it around, pan, zoom in/out with the mouse controls:
Investigating the rendered content
Use the mouse controls described in the previous article to investigate your volumetric video render

If you want to change something, you can change it in the post-processing menu and render again until you like the result. You can also save your last render in your computer.

Post-processing for EF EVE™ Platform

As EF EVE™ Platform is a web tool, your volumetric video file has to be smaller than the one you do for a Unity project. Otherwise many devices (smartphones or tablets) will not be able to load and view it. 

Android devices can load the ‘heavier’ files on EF EVE Platform than iOS devices. It’s because of the devices RAM capabilities.

For uploading to the Platform, you need to follow the steps above (the same as for a Unity project), and add one more step – mesh decimation. This will reduce the quality as we only need a 10% quality for the Platform.

  • Expand the Mesh Decimation section and mark the checkbox:
Apply mesh decimation to reduce the file quality for EF EVE Platform
Mesh decimation applied to upload volumetric video on EF EVE Platform.
  • In the Percentage section, type in 10:
Reduce Mesh decimation quality to 10% for EF EVE Platform
Only 10% quality is needed for EF EVE Platform

Next: Exporting volumetric video

Updated on February 18, 2020

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