Adding a 2D Intro Video Overlay to 360 Videos with FFmpeg

Abstract: Learn how to add a 2D intro video overlay to a 360 video using FFmpeg, while keeping the initial rotation and field of view unchanged.

Created: 2024-07-13 by UserComp.com Editors

Adding a 2D Intro Video Overlay to 360 Videos with FFmpeg

360 videos have become increasingly popular in recent years, providing an immersive experience for viewers. One way to enhance the viewer experience is by adding a 2D intro video overlay to the 360 video. This article will cover the key concepts and steps required to add a 2D intro video overlay to a 360 video using FFmpeg.

What is FFmpeg?

FFmpeg is a free and open-source software project consisting of a vast software suite of libraries and programs for handling video, audio, and other multimedia files and streams. It is widely used for format transcoding, video editing, and streaming.

Adding a 2D Intro Video Overlay

To add a 2D intro video overlay to a 360 video, you will need to use the FFmpeg command-line tool. The basic syntax for adding an overlay is as follows:

ffmpeg -i input.mp4 -i overlay.mp4 -filter\_complex "[0:v][1:v]overlay=W-w-10:H-h-10" output.mp4

Where:

input.mp4 is the input 360 video file
overlay.mp4 is the input 2D intro video file
W-w-10:H-h-10 is the position of the overlay (W and H are the width and height of the input video, w and h are the width and height of the overlay)
output.mp4 is the output file with the overlay added

Initial Rotation and Field of View (FOV)

When adding a 2D intro video overlay to a 360 video, it is important to consider the initial rotation and field of view (FOV) of the 360 video. The initial rotation refers to the orientation of the 360 video when it is first played, while the FOV refers to the angle of view of the 360 video. By default, FFmpeg will use the equirectangular projection for 360 videos, which can result in a distorted overlay if the initial rotation and FOV are not taken into account.

To address this issue, you can use the rotate and fov filters in FFmpeg to adjust the initial rotation and FOV of the 360 video before adding the overlay. For example, the following command will rotate the 360 video by 90 degrees and set the FOV to 90 degrees:

ffmpeg -i input.mp4 -vf "rotate=90*PI/180:c=black:ow=rotw(90*PI/180):oh=roth(90*PI/180),fov=90" -i overlay.mp4 -filter\_complex "[0:v][1:v]overlay=W-w-10:H-h-10" output.mp4

Where:

rotate=90*PI/180:c=black:ow=rotw(90*PI/180):oh=roth(90*PI/180) rotates the 360 video by 90 degrees and sets the background color to black
fov=90 sets the FOV to 90 degrees

In this article, we covered the key concepts and steps required to add a 2D intro video overlay to a 360 video using FFmpeg. By using the overlay filter in FFmpeg, you can easily add an overlay to a 360 video. Additionally, by using the rotate and fov filters, you can adjust the initial rotation and FOV of the 360 video to ensure that the overlay is displayed correctly.

References

-- generated by AI at ChatGPT --

Tags: FFmpeg 360 Video Overlay 2D Video

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