Unity中播放带有alpha通道格式为Mp4的视频

Posted clhxxlcj

tags:

篇首语:本文由小常识网(cha138.com)小编为大家整理,主要介绍了Unity中播放带有alpha通道格式为Mp4的视频相关的知识,希望对你有一定的参考价值。

问题

     Unity中实现播放透明的MP4视频时出现黑点

解决办法:

   使用Unity自带的shader去除黑点

1:shader代码如下所示

 

Shader "Unlit/NewUnlitShader"

	Properties
	
		_Color("Color", Color) = (1,1,1,1)
		//_MainTex ("Albedo (RGB)", 2D) = "white"   
		_AlphaVideo("Alpha Video(R)", 2D) = "white" 
		_Glossiness("Smoothness", Range(0,1)) = 0.5
		_Metallic("Metallic", Range(0,1)) = 0.0
	
		SubShader
		
		Tags  "Queue" = "Transparent" "RenderType" = "Transparent" 
			LOD 200

			CGPROGRAM
			// Physically based Standard lighting model, and enable shadows on all light types  
			#pragma surface surf Standard alpha  

			// Use shader model 3.0 target, to get nicer looking lighting  
			#pragma target 3.0  

			sampler2D _MainTex;
			sampler2D _AlphaVideo;

			struct Input 
				float2 uv_MainTex;
				float2 uv_AlphaVideo;
			;

			half _Glossiness;
			half _Metallic;
			fixed4 _Color;

			void surf(Input IN, inout SurfaceOutputStandard o) 
				// Albedo comes from a texture tinted by color  
				fixed4 c = tex2D(_MainTex, IN.uv_MainTex) * _Color;
				fixed4 _alpha = tex2D(_AlphaVideo, IN.uv_AlphaVideo);
				o.Albedo = c.rgb;
				// Metallic and smoothness come from slider variables  
				o.Metallic = _Metallic;
				o.Smoothness = _Glossiness;
				o.Alpha = _alpha.r;

			
			ENDCG
		
			FallBack "Diffuse"

  2:准备好格式为mp4的视频文件,并且提前下载安装好QuickTime,导入Unity当中,将视频文件由Videoclip改为MovieTexture

技术图片

 

3:建立新的Material材质,将编写好的shader使用到材质中去,并将处理好的视频拖入当中

技术图片

4:建立plane模型,X旋转90度,将建立好的材质拖到plane模型当中去,用代码控制视频的播放

技术图片

5:控制代码如下所示:

using System.Collections;
using System.Collections.Generic;
using UnityEngine.UI;
using UnityEngine;
public class Juasd : MonoBehaviour 
    public MovieTexture moveTex;
    
	// Use this for initialization
	void Start () 
        GetComponent<Renderer>().material.mainTexture = moveTex;
        moveTex.loop = true;
        moveTex.Play();
        

    
	
	// Update is called once per frame
	void Update () 
		
	

  

 

以上是关于Unity中播放带有alpha通道格式为Mp4的视频的主要内容,如果未能解决你的问题,请参考以下文章

python 生成带有alpha 通道的视频

python 生成带有alpha 通道的视频

python 生成带有alpha 通道的视频

Unity播放带Alpha通道的视频(unity play channel movie)

Unity中怎么播放视频

ffmpeg 使用过滤器分割 RGB 和 Alpha 通道