diff --git a/configure b/configure
index 6916b45..7c79e20 100755
--- a/configure
+++ b/configure
@@ -3212,6 +3212,7 @@ bs2b_filter_deps="libbs2b"
 colormatrix_filter_deps="gpl"
 convolve_filter_deps="avcodec"
 convolve_filter_select="fft"
+convolution_opencl_filter_deps="opencl"
 coreimage_filter_deps="coreimage appkit"
 coreimage_filter_extralibs="-framework OpenGL"
 coreimagesrc_filter_deps="coreimage appkit"
diff --git a/libavfilter/Makefile b/libavfilter/Makefile
index 6a60836..d005934 100644
--- a/libavfilter/Makefile
+++ b/libavfilter/Makefile
@@ -156,6 +156,7 @@ OBJS-$(CONFIG_COLORLEVELS_FILTER)            += vf_colorlevels.o
 OBJS-$(CONFIG_COLORMATRIX_FILTER)            += vf_colormatrix.o
 OBJS-$(CONFIG_COLORSPACE_FILTER)             += vf_colorspace.o colorspacedsp.o
 OBJS-$(CONFIG_CONVOLUTION_FILTER)            += vf_convolution.o
+OBJS-$(CONFIG_CONVOLUTION_OPENCL_FILTER)     += vf_convolution_opencl.o opencl.o opencl/convolution.o
 OBJS-$(CONFIG_CONVOLVE_FILTER)               += vf_convolve.o framesync.o
 OBJS-$(CONFIG_COPY_FILTER)                   += vf_copy.o
 OBJS-$(CONFIG_COREIMAGE_FILTER)              += vf_coreimage.o
diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
index 9adb109..f2dc55e 100644
--- a/libavfilter/allfilters.c
+++ b/libavfilter/allfilters.c
@@ -166,6 +166,7 @@ static void register_all(void)
     REGISTER_FILTER(COLORMATRIX,    colormatrix,    vf);
     REGISTER_FILTER(COLORSPACE,     colorspace,     vf);
     REGISTER_FILTER(CONVOLUTION,    convolution,    vf);
+    REGISTER_FILTER(CONVOLUTION_OPENCL, convolution_opencl, vf);
     REGISTER_FILTER(CONVOLVE,       convolve,       vf);
     REGISTER_FILTER(COPY,           copy,           vf);
     REGISTER_FILTER(COREIMAGE,      coreimage,      vf);
diff --git a/libavfilter/opencl/convolution.cl b/libavfilter/opencl/convolution.cl
new file mode 100644
index 0000000..d074d98
--- /dev/null
+++ b/libavfilter/opencl/convolution.cl
@@ -0,0 +1,42 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+__kernel void convolution_global(__write_only image2d_t dst,
+                                 __read_only  image2d_t src,
+                                 __constant int *coef_matrix_size,
+                                 __constant float *coef_matrix,
+                                 __constant float *div,
+                                 __constant float *bias)
+{
+    const sampler_t sampler = (CLK_NORMALIZED_COORDS_FALSE | CLK_FILTER_NEAREST);
+
+    int2 loc = (int2)(get_global_id(0), get_global_id(1));
+
+    float4 convPix = (float4)(0.0f, 0.0f, 0.0f, 0.0f);
+    for (int i = 0; i < 4; i++) {
+        for (int conv_i = -(coef_matrix_size[i] / 2); conv_i <= (coef_matrix_size[i] / 2); conv_i++) {
+            for (int conv_j = -(coef_matrix_size[i] / 2); conv_j <= (coef_matrix_size[i] / 2); conv_j++) {
+                float4 px = read_imagef(src, sampler, loc + (int2)(conv_j, conv_i));
+                convPix[i] += px[i] * coef_matrix[(coef_matrix_size[i]*coef_matrix_size[i]*i)
+                            + (conv_i+(coef_matrix_size[i] / 2)) * coef_matrix_size[i] + (conv_j+(coef_matrix_size[i] / 2))];
+            }
+        }
+        convPix[i] = convPix[i] * div[i] + bias[i];
+    }
+    write_imagef(dst, loc, convPix);
+}
diff --git a/libavfilter/opencl_source.h b/libavfilter/opencl_source.h
index 23cdfc6..3029f64 100644
--- a/libavfilter/opencl_source.h
+++ b/libavfilter/opencl_source.h
@@ -19,7 +19,10 @@
 #ifndef AVFILTER_OPENCL_SOURCE_H
 #define AVFILTER_OPENCL_SOURCE_H
 
+extern const char *ff_opencl_source_convolution;
 extern const char *ff_opencl_source_overlay;
 extern const char *ff_opencl_source_unsharp;
 
+
+
 #endif /* AVFILTER_OPENCL_SOURCE_H */
diff --git a/libavfilter/vf_convolution_opencl.c b/libavfilter/vf_convolution_opencl.c
new file mode 100644
index 0000000..60e2d1f
--- /dev/null
+++ b/libavfilter/vf_convolution_opencl.c
@@ -0,0 +1,464 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/common.h"
+#include "libavutil/imgutils.h"
+#include "libavutil/mem.h"
+#include "libavutil/opt.h"
+#include "libavutil/pixdesc.h"
+#include "libavutil/avstring.h"
+
+
+#include "avfilter.h"
+#include "internal.h"
+#include "opencl.h"
+#include "opencl_source.h"
+#include "video.h"
+
+typedef struct ConvolutionOpenCLContext {
+    OpenCLFilterContext ocf;
+
+    int              initialised;
+    cl_kernel        kernel;
+    cl_command_queue command_queue;
+
+    char *matrix_str[4];
+    cl_int size[4];
+
+    cl_int total_matrix_len;
+    cl_int matrix_length[4];
+    float rdiv[4];
+    float bias[4];
+    cl_mem matrix;
+    cl_mem rdiv_buffer;
+    cl_mem bias_buffer;
+    cl_mem size_buffer;
+
+} ConvolutionOpenCLContext;
+
+
+
+static int convolution_opencl_init(AVFilterContext *avctx)
+{
+    ConvolutionOpenCLContext *ctx = avctx->priv;
+    cl_int cle;
+    int err;
+
+    err = ff_opencl_filter_load_program(avctx, &ff_opencl_source_convolution, 1);
+    if (err < 0)
+        goto fail;
+
+    ctx->command_queue = clCreateCommandQueue(ctx->ocf.hwctx->context,
+                                              ctx->ocf.hwctx->device_id,
+                                              0, &cle);
+    if (!ctx->command_queue) {
+        av_log(avctx, AV_LOG_ERROR, "Failed to create OpenCL "
+               "command queue: %d.\n", cle);
+        err = AVERROR(EIO);
+        goto fail;
+    }
+
+    ctx->kernel = clCreateKernel(ctx->ocf.program, "convolution_global", &cle);
+    if (!ctx->kernel) {
+        av_log(avctx, AV_LOG_ERROR, "Failed to create kernel: %d.\n", cle);
+        err = AVERROR(EIO);
+        goto fail;
+    }
+
+    ctx->initialised = 1;
+    return 0;
+
+fail:
+    if (ctx->command_queue)
+        clReleaseCommandQueue(ctx->command_queue);
+    if (ctx->kernel)
+        clReleaseKernel(ctx->kernel);
+    return err;
+}
+
+
+
+static int convolution_opencl_make_filter_params(AVFilterContext *avctx)
+{
+    ConvolutionOpenCLContext *ctx = avctx->priv;
+    float *matrix;
+    float *matrix_rdiv;
+    float *matrix_bias;
+    int   *matrix_size;
+    size_t matrix_bytes;
+    cl_mem buffer, buffer_rdiv, buffer_bias, buffer_size;
+    cl_int cle;
+    int err, sscanf_err;
+    int i, j, cnt;
+    char *p, *arg, *saveptr = NULL;
+    float input_matrix[4][49];
+
+    ctx->total_matrix_len = 0;
+    for (i = 0; i < 4; i++) {
+        p = ctx->matrix_str[i];
+        while (ctx->matrix_length[i] < 49) {
+            if (!(arg = av_strtok(p, " ", &saveptr)))
+                break;
+            p = NULL;
+            sscanf_err = sscanf(arg, "%f", &input_matrix[i][ctx->matrix_length[i]]);
+            if (!sscanf_err) {
+                av_log(ctx, AV_LOG_ERROR, "Matrix is sequence of 9, 25 or 49 signed numbers\n");
+                return AVERROR(EINVAL);
+            }
+            ctx->matrix_length[i]++;
+        }
+        if (ctx->matrix_length[i] == 9) {
+            ctx->size[i] = 3;
+        } else if (ctx->matrix_length[i] == 25) {
+                ctx->size[i] = 5;
+        } else if (ctx->matrix_length[i] == 49) {
+                ctx->size[i] = 7;
+        } else {
+            av_log(ctx, AV_LOG_ERROR, "Invalid matrix size:%d\n", ctx->matrix_length[i]);
+            return AVERROR(EINVAL);
+        }
+        ctx->total_matrix_len += ctx->matrix_length[i];
+
+    }
+    matrix_bytes = sizeof(float)*ctx->total_matrix_len;
+    matrix = av_malloc(matrix_bytes);
+    if (!matrix) {
+        err = AVERROR(ENOMEM);
+        goto fail;
+    }
+    cnt = 0;
+    for (i = 0; i < 4; i++) {
+        for (j = 0; j < ctx->matrix_length[i]; j++) {
+            matrix[cnt++] = input_matrix[i][j];
+        }
+    }
+
+    buffer = clCreateBuffer(ctx->ocf.hwctx->context,
+                            CL_MEM_READ_ONLY |
+                            CL_MEM_COPY_HOST_PTR |
+                            CL_MEM_HOST_NO_ACCESS,
+                            matrix_bytes, matrix, &cle);
+    if (!buffer) {
+        av_log(avctx, AV_LOG_ERROR, "Failed to create matrix buffer: "
+               "%d.\n", cle);
+        err = AVERROR(EIO);
+        goto fail;
+    }
+    ctx->matrix = buffer;
+
+
+    matrix_bytes = sizeof(float)*4;
+    matrix_rdiv = av_malloc(matrix_bytes);
+    if (!matrix_rdiv) {
+        err = AVERROR(ENOMEM);
+        av_freep(&matrix_rdiv);
+        goto fail;
+    }
+
+    for (j = 0; j < 4; j++) {
+        matrix_rdiv[j] = ctx->rdiv[j];
+    }
+    buffer_rdiv = clCreateBuffer(ctx->ocf.hwctx->context,
+                            CL_MEM_READ_ONLY |
+                            CL_MEM_COPY_HOST_PTR |
+                            CL_MEM_HOST_NO_ACCESS,
+                            matrix_bytes, matrix_rdiv, &cle);
+    if (!buffer_rdiv) {
+        av_log(avctx, AV_LOG_ERROR, "Failed to create rdiv buffer: "
+               "%d.\n", cle);
+        err = AVERROR(EIO);
+        av_freep(&matrix_rdiv);
+        goto fail;
+    }
+    ctx->rdiv_buffer = buffer_rdiv;
+
+
+    matrix_bytes = sizeof(float)*4;
+    matrix_bias = av_malloc(matrix_bytes);
+    if (!matrix_bias) {
+        err = AVERROR(ENOMEM);
+        av_freep(&matrix_rdiv);
+        av_freep(&matrix_bias);
+        goto fail;
+    }
+
+    for (j = 0; j < 4; j++) {
+        matrix_bias[j] = ctx->bias[j];
+    }
+    buffer_bias = clCreateBuffer(ctx->ocf.hwctx->context,
+                            CL_MEM_READ_ONLY |
+                            CL_MEM_COPY_HOST_PTR |
+                            CL_MEM_HOST_NO_ACCESS,
+                            matrix_bytes, matrix_bias, &cle);
+    if (!buffer_bias) {
+        av_log(avctx, AV_LOG_ERROR, "Failed to create bias buffer: "
+               "%d.\n", cle);
+        err = AVERROR(EIO);
+        av_freep(&matrix_rdiv);
+        av_freep(&matrix_bias);
+        goto fail;
+    }
+    ctx->bias_buffer = buffer_bias;
+
+    matrix_bytes = sizeof(int)*4;
+    matrix_size = av_malloc(matrix_bytes);
+    if (!matrix_size) {
+        err = AVERROR(ENOMEM);
+        av_freep(&matrix_rdiv);
+        av_freep(&matrix_bias);
+        av_freep(&matrix_size);
+        goto fail;
+    }
+
+    for (j = 0; j < 4; j++) {
+        matrix_size[j] = ctx->size[j];
+    }
+    buffer_size = clCreateBuffer(ctx->ocf.hwctx->context,
+                            CL_MEM_READ_ONLY |
+                            CL_MEM_COPY_HOST_PTR |
+                            CL_MEM_HOST_NO_ACCESS,
+                            matrix_bytes, matrix_size, &cle);
+    if (!buffer_size) {
+        av_log(avctx, AV_LOG_ERROR, "Failed to create bias buffer: "
+               "%d.\n", cle);
+        err = AVERROR(EIO);
+        av_freep(&matrix_rdiv);
+        av_freep(&matrix_bias);
+        av_freep(&matrix_size);
+        goto fail;
+    }
+    ctx->size_buffer = buffer_size;
+
+
+
+
+    err = 0;
+fail:
+    av_freep(&matrix);
+    return err;
+}
+
+static int convolution_opencl_filter_frame(AVFilterLink *inlink, AVFrame *input)
+{
+    AVFilterContext    *avctx = inlink->dst;
+    AVFilterLink     *outlink = avctx->outputs[0];
+    ConvolutionOpenCLContext *ctx = avctx->priv;
+    AVFrame *output = NULL;
+    cl_int cle;
+    size_t global_work[2];
+    cl_mem src, dst;
+    int err, p;
+
+    av_log(ctx, AV_LOG_DEBUG, "Filter input: %s, %ux%u (%"PRId64").\n",
+           av_get_pix_fmt_name(input->format),
+           input->width, input->height, input->pts);
+
+    if (!input->hw_frames_ctx)
+        return AVERROR(EINVAL);
+
+    if (!ctx->initialised) {
+        err = convolution_opencl_init(avctx);
+        if (err < 0)
+            goto fail;
+
+        err = convolution_opencl_make_filter_params(avctx);
+        if (err < 0)
+            goto fail;
+    }
+
+    output = ff_get_video_buffer(outlink, outlink->w, outlink->h);
+    if (!output) {
+        err = AVERROR(ENOMEM);
+        goto fail;
+    }
+
+    for (p = 0; p < FF_ARRAY_ELEMS(output->data); p++) {
+        src = (cl_mem) input->data[p];
+        dst = (cl_mem)output->data[p];
+
+
+        if (!dst)
+            break;
+
+        cle = clSetKernelArg(ctx->kernel, 0, sizeof(cl_mem), &dst);
+        if (cle != CL_SUCCESS) {
+            av_log(avctx, AV_LOG_ERROR, "Failed to set kernel "
+                   "destination image argument: %d.\n", cle);
+            goto fail;
+        }
+        cle = clSetKernelArg(ctx->kernel, 1, sizeof(cl_mem), &src);
+        if (cle != CL_SUCCESS) {
+            av_log(avctx, AV_LOG_ERROR, "Failed to set kernel "
+                   "source image argument: %d.\n", cle);
+            goto fail;
+        }
+        cle = clSetKernelArg(ctx->kernel, 2, sizeof(cl_mem), &ctx->size_buffer);
+        if (cle != CL_SUCCESS) {
+            av_log(avctx, AV_LOG_ERROR, "Failed to set kernel "
+                   "matrix size argument: %d.\n", cle);
+            goto fail;
+        }
+        cle = clSetKernelArg(ctx->kernel, 3, sizeof(cl_mem), &ctx->matrix);
+        if (cle != CL_SUCCESS) {
+            av_log(avctx, AV_LOG_ERROR, "Failed to set kernel "
+                   "matrix argument: %d.\n", cle);
+            goto fail;
+        }
+        cle = clSetKernelArg(ctx->kernel, 4, sizeof(cl_mem), &ctx->rdiv_buffer);
+        if (cle != CL_SUCCESS) {
+            av_log(avctx, AV_LOG_ERROR, "Failed to set kernel "
+                   "div argument: %d.\n", cle);
+            goto fail;
+        }
+        cle = clSetKernelArg(ctx->kernel, 5, sizeof(cl_mem), &ctx->bias_buffer);
+        if (cle != CL_SUCCESS) {
+            av_log(avctx, AV_LOG_ERROR, "Failed to set kernel "
+                   "bias argument: %d.\n", cle);
+            goto fail;
+        }
+
+
+
+        global_work[0] = output->width;
+        global_work[1] = output->height;
+
+
+        av_log(avctx, AV_LOG_DEBUG, "Run kernel on plane %d "
+               "(%"SIZE_SPECIFIER"x%"SIZE_SPECIFIER").\n",
+               p, global_work[0], global_work[1]);
+
+        cle = clEnqueueNDRangeKernel(ctx->command_queue, ctx->kernel, 2, NULL,
+                                     global_work, NULL,
+                                     0, NULL, NULL);
+        if (cle != CL_SUCCESS) {
+            av_log(avctx, AV_LOG_ERROR, "Failed to enqueue kernel: %d.\n",
+                   cle);
+            err = AVERROR(EIO);
+            goto fail;
+        }
+    }
+
+    cle = clFinish(ctx->command_queue);
+    if (cle != CL_SUCCESS) {
+        av_log(avctx, AV_LOG_ERROR, "Failed to finish command queue: %d.\n",
+               cle);
+        err = AVERROR(EIO);
+        goto fail;
+    }
+
+    err = av_frame_copy_props(output, input);
+    if (err < 0)
+        goto fail;
+
+    av_frame_free(&input);
+
+    av_log(ctx, AV_LOG_DEBUG, "Filter output: %s, %ux%u (%"PRId64").\n",
+           av_get_pix_fmt_name(output->format),
+           output->width, output->height, output->pts);
+
+    return ff_filter_frame(outlink, output);
+
+fail:
+    clFinish(ctx->command_queue);
+    av_frame_free(&input);
+    av_frame_free(&output);
+    return err;
+}
+
+static av_cold void convolution_opencl_uninit(AVFilterContext *avctx)
+{
+    ConvolutionOpenCLContext *ctx = avctx->priv;
+    cl_int cle;
+
+    if (ctx->matrix) {
+        clReleaseMemObject(ctx->matrix);
+    }
+
+    if (ctx->kernel) {
+        cle = clReleaseKernel(ctx->kernel);
+        if (cle != CL_SUCCESS)
+            av_log(avctx, AV_LOG_ERROR, "Failed to release "
+                   "kernel: %d.\n", cle);
+    }
+
+    if (ctx->command_queue) {
+        cle = clReleaseCommandQueue(ctx->command_queue);
+        if (cle != CL_SUCCESS)
+            av_log(avctx, AV_LOG_ERROR, "Failed to release "
+                   "command queue: %d.\n", cle);
+    }
+
+    ff_opencl_filter_uninit(avctx);
+}
+
+#define OFFSET(x) offsetof(ConvolutionOpenCLContext, x)
+#define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
+static const AVOption convolution_opencl_options[] = {
+    { "0m", "set matrix for 1st plane", OFFSET(matrix_str[0]), AV_OPT_TYPE_STRING, {.str="0 0 0 0 1 0 0 0 0"}, 0, 0, FLAGS },
+    { "1m", "set matrix for 2nd plane", OFFSET(matrix_str[1]), AV_OPT_TYPE_STRING, {.str="0 0 0 0 1 0 0 0 0"}, 0, 0, FLAGS },
+    { "2m", "set matrix for 3rd plane", OFFSET(matrix_str[2]), AV_OPT_TYPE_STRING, {.str="0 0 0 0 1 0 0 0 0"}, 0, 0, FLAGS },
+    { "3m", "set matrix for 4th plane", OFFSET(matrix_str[3]), AV_OPT_TYPE_STRING, {.str="0 0 0 0 1 0 0 0 0"}, 0, 0, FLAGS },
+    { "0rdiv", "set rdiv for 1st plane", OFFSET(rdiv[0]), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, 0.0, INT_MAX, FLAGS},
+    { "1rdiv", "set rdiv for 2nd plane", OFFSET(rdiv[1]), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, 0.0, INT_MAX, FLAGS},
+    { "2rdiv", "set rdiv for 3rd plane", OFFSET(rdiv[2]), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, 0.0, INT_MAX, FLAGS},
+    { "3rdiv", "set rdiv for 4th plane", OFFSET(rdiv[3]), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, 0.0, INT_MAX, FLAGS},
+    { "0bias", "set bias for 1st plane", OFFSET(bias[0]), AV_OPT_TYPE_FLOAT, {.dbl=0.0}, 0.0, INT_MAX, FLAGS},
+    { "1bias", "set bias for 2nd plane", OFFSET(bias[1]), AV_OPT_TYPE_FLOAT, {.dbl=0.0}, 0.0, INT_MAX, FLAGS},
+    { "2bias", "set bias for 3rd plane", OFFSET(bias[2]), AV_OPT_TYPE_FLOAT, {.dbl=0.0}, 0.0, INT_MAX, FLAGS},
+    { "3bias", "set bias for 4th plane", OFFSET(bias[3]), AV_OPT_TYPE_FLOAT, {.dbl=0.0}, 0.0, INT_MAX, FLAGS},
+    { NULL }
+};
+
+AVFILTER_DEFINE_CLASS(convolution_opencl);
+
+
+
+static const AVFilterPad convolution_opencl_inputs[] = {
+    {
+        .name         = "default",
+        .type         = AVMEDIA_TYPE_VIDEO,
+        .filter_frame = &convolution_opencl_filter_frame,
+        .config_props = &ff_opencl_filter_config_input,
+    },
+    { NULL }
+};
+
+static const AVFilterPad convolution_opencl_outputs[] = {
+    {
+        .name         = "default",
+        .type         = AVMEDIA_TYPE_VIDEO,
+        .config_props = &ff_opencl_filter_config_output,
+    },
+    { NULL }
+};
+
+AVFilter ff_vf_convolution_opencl = {
+    .name           = "convolution_opencl",
+    .description    = NULL_IF_CONFIG_SMALL("Apply convolution mask to input video"),
+    .priv_size      = sizeof(ConvolutionOpenCLContext),
+    .priv_class     = &convolution_opencl_class,
+    .init           = &ff_opencl_filter_init,
+    .uninit         = &convolution_opencl_uninit,
+    .query_formats  = &ff_opencl_filter_query_formats,
+    .inputs         = convolution_opencl_inputs,
+    .outputs        = convolution_opencl_outputs,
+    .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
+};
+
+
+
