avcodec/nvenc: Fix typo: 1204 -> 1024

Fixes Ticket4508
Signed-off-by: Philip Langdale <philipl@overt.org>

libavcodec/nvenc.c

@@ -680,7 +680,7 @@ static av_cold int nvenc_encode_init(AVCodecContext *avctx)
         av_reduce(&dw, &dh,
                   ctx->init_encode_params.darWidth * 44,
                   ctx->init_encode_params.darHeight * 45,
-                  1024 * 1204);
+                  1024 * 1024);
         ctx->init_encode_params.darHeight = dh;
         ctx->init_encode_params.darWidth = dw;
     }