func CopyIntoRgbaImage(f astiav.Frame, dstImage *image.RGBA) {
    requiredSize := f.Linesize()[0] * f.Height()
    
    // If the existing Pix slice is smaller than needed, allocate a new slice
    if len(dstImage.Pix) < requiredSize {
        dstImage.Pix = make([]byte, requiredSize)
    }

    // Copy pixel data
    copy(dstImage.Pix, f.Data().PlaneData(0, func(linesize int) int { return linesize * f.Height() }))

    // Update stride if different
    if dstImage.Stride != f.Linesize()[0] {
        dstImage.Stride = f.Linesize()[0]
    }

    // Update rect if different
    if dstImage.Rect.Dx() != f.Width() || dstImage.Rect.Dy() != f.Height() {
        dstImage.Rect = image.Rect(0, 0, f.Width(), f.Height())
    }
}