360-degrees | 易学教程

Is there a fisheye or dual fisheye to equirectangular filter for ffmpeg?

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问题 Or a way to do it with an existing filter? So that you could take in video from a fisheye or dual fisheye camera (such as the Ricoh Theta) and directly output equirectangular, in real-time, to something like RTMP? 回答1: The Remap filter does just this: This filter copies pixel by pixel a source frame to a target frame. It remaps the pixels to a new x,y destination based on two files ymap/xmap. Basic command syntax is ffmpeg -i fisheye_grid_input.jpg -i fisheye_grid_xmap.pgm -i fisheye_grid

Animate jquery reel via scroll

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问题 I am working on a scroll application - and one of the requested features is to animate the jquery reel - as the user scrolls -- I've tried to trigger the play - and stop feature on a frame - and link it to the scrollTop - but its not doing anything. http://jsfiddle.net/dxf17mbn/ var threesixty = $('#image').reel({ image: 'http://test.vostrel.net/jquery.reel/example/object-movie-clockwise-sprite/f1-reel.jpg', speed: 0, frames: 35, cw: true, throwable: 1.2 }); console.log("threesixty",

Detect 360 degree video

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问题 I want to Detect 360 degree video I want to find if the video format is 360 degree and based on that manage the player supported the 360 degree So anybody can help ? 回答1: It seems that the 360video/VR standards are still in flux. This article, http://labs.dash.umn.edu/etc-lab/detecting-spherical-media-files/, (dated April 2016) suggests that inspecting the EXIF properties of the photo/video might reveal a pattern in the metadata. There are libraries available to access EXIF data from files,

Getting the difference between two headings

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问题 I have this method for figuring out the difference between 2 0-360 compass headings. Although this works for figuring out how far absolutely (as in, always positive output) off I am, I am having trouble figuring out what needs to be done to introduce the sign into the output. Ideally, if the shortest distance from the initial heading to the final heading is by going around clockwise, I'd like the error to have a positive sign, if the shortest distance between the headings involves going

Is there a Youtube 360 API

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问题 I would like to set up a javascript listener on an iframe youtube 360 video player that would capture the pan/tilt coordinates of the 360 panorama that is being rotated. Does anyone know if this is possible or some documentation for an api of the youtube 360 player? I have not been able to find any myself. 回答1: The ability to read the pan/tilt coordinates isn't currently supported. There is no mention of 360 degree video players in the documentation. I filed a enhancement request for this

Is there a Youtube 360 API

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OpenGl world using camera to find object

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问题 I am trying to create a virtual 360 degree world using the device as the center, i then want a simple shape to move around randomly in this world. The user is then supposed to use the camera to try and find the object moving around. i can make a simple shape in opengl, but have no idea how to make move around in a virtual world off screen. as well as how to use the camera to find. An tips or ways to simplify the problem? 来源： https://stackoverflow.com/questions/33120519/opengl-world-using

iOS - Read/Write XMP metadatas of mp4 videos

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问题 I need to read and inject XMP metadatas in an mp4 container. I know this is possible on android with the "mp4parser" library, but I couldn't find an equivalent for iOS. For the read part, is it possible to read every footage from the camera roll to inspect their 360 XMP metadatas quickly ? For the writing, I'm trying to use Adobe's XMP toolkit. I have an mp4 video in a folder, and I want to inject into it some 360 metadatas. After injecting the metadatas (I suppose it works), I export the

JQuery 360° Product View with Hotspots

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问题 I need a 360 view product script for my HTML website. But I've just manage to found Flash version of 360 view that I wanted to achieve! http://www.auris-hybrid.de/index_en.asp#/model Any JQuery style like this kind of interaction? I'm using the Jquery Reel to do the 360 view, or is it have others Jquery that can implement with Reel and get the hotspot thing what I wanted? 回答1: If you do not mind to use some PHP, AJAX-ZOOM even provides a way of defining hotspots with drag & drop in an online

Getting the difference between two headings

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I have this method for figuring out the difference between 2 0-360 compass headings. Although this works for figuring out how far absolutely (as in, always positive output) off I am, I am having trouble figuring out what needs to be done to introduce the sign into the output. Ideally, if the shortest distance from the initial heading to the final heading is by going around clockwise, I'd like the error to have a positive sign, if the shortest distance between the headings involves going around counterclock-wise, I'd like the error to have a negative sign. A few examples of desired inputs