@@ -747,8 +747,7 @@ static int apng_encode_frame(AVCodecContext *avctx, const AVFrame *pict,

             // Do disposal

             if (last_fctl_chunk.dispose_op != APNG_DISPOSE_OP_PREVIOUS) {

-                memcpy(diffFrame->data[0], s->last_frame->data[0],

-                       s->last_frame->linesize[0] * s->last_frame->height);

+                av_frame_copy(diffFrame, s->last_frame);

                 if (last_fctl_chunk.dispose_op == APNG_DISPOSE_OP_BACKGROUND) {

                     for (y = last_fctl_chunk.y_offset; y < last_fctl_chunk.y_offset + last_fctl_chunk.height; ++y) {

@@ -760,8 +759,7 @@ static int apng_encode_frame(AVCodecContext *avctx, const AVFrame *pict,

                 if (!s->prev_frame)

                     continue;

-                memcpy(diffFrame->data[0], s->prev_frame->data[0],

-                       s->prev_frame->linesize[0] * s->prev_frame->height);

+                av_frame_copy(diffFrame, s->prev_frame);

             }

             // Do inverse blending

@@ -923,8 +921,7 @@ static int encode_apng(AVCodecContext *avctx, AVPacket *pkt,

             }

             // Do disposal, but not blending

-            memcpy(s->prev_frame->data[0], s->last_frame->data[0],

-                   s->last_frame->linesize[0] * s->last_frame->height);

+            av_frame_copy(s->prev_frame, s->last_frame);

             if (s->last_frame_fctl.dispose_op == APNG_DISPOSE_OP_BACKGROUND) {

                 uint32_t y;

                 uint8_t bpp = (s->bits_per_pixel + 7) >> 3;