[ANSWERED] Deinterlacing

[Fred]

Hi, I have some badly encoded videos and want an up to date way to deinterlace, is there anything availabe that is GPU accelarated for Isadora?

[DusX]

@fred

I couldn't think of anything instantly, so I did a quick search, found an ISF shader, and converted it.

// CREDIT: by zoidberg
uniform sampler2D tex0;
uniform vec2 resolution;
const vec2        pointOffset = vec2(0.0, 1.0);
void main() {
    vec4        outColor;
    //    "upper" (a.k.a. "the top row")
    if (fract((gl_FragCoord.y+0.5)/2.0) == 0.0)    {
        //gl_FragColor = vec4(1,0,0,1);
        outColor = (texture2D(tex0, (gl_FragCoord.xy)/resolution) + texture2D(tex0, (gl_FragCoord.xy - pointOffset)/resolution))/2.0;
        gl_FragColor = outColor;
    }
    //    "lower" (a.k.a. "the bottom row")
    else    {
        //gl_FragColor = vec4(0,1,0,1);
        outColor = (texture2D(tex0, (gl_FragCoord.xy)/resolution) + texture2D(tex0, (gl_FragCoord.xy + pointOffset)/resolution))/2.0;
        gl_FragColor = outColor;
    }
}

From a quick test it seems to work. Of course you may get better results deinterlacing in Shutter Encoder or another non real-time tool.

[Fred]

@dusx said:

// CREDIT: by zoidberg uniform sampler2D tex0; uniform vec2 resolution; const vec2 pointOffset = vec2(0.0, 1.0); void main() { vec4 outColor; // "upper" (a.k.a. "the top row") if (fract((gl_FragCoord.y+0.5)/2.0) == 0.0) { //gl_FragColor = vec4(1,0,0,1); outColor = (texture2D(tex0, (gl_FragCoord.xy)/resolution) + texture2D(tex0, (gl_FragCoord.xy - pointOffset)/resolution))/2.0; gl_FragColor = outColor; } // "lower" (a.k.a. "the bottom row") else { //gl_FragColor = vec4(0,1,0,1); outColor = (texture2D(tex0, (gl_FragCoord.xy)/resolution) + texture2D(tex0, (gl_FragCoord.xy + pointOffset)/resolution))/2.0; gl_FragColor = outColor; } }

 Hey thanks a lot! works ok for my puposes, I just needed a fast realt time solution, all the files will be re-encoded correctly some time.

Cheers

Fred