diff --git a/app/src/main/cpp/CMakeLists.txt b/app/src/main/cpp/CMakeLists.txt
index a7c25ca..ce5e9ae 100644
--- a/app/src/main/cpp/CMakeLists.txt
+++ b/app/src/main/cpp/CMakeLists.txt
@@ -56,7 +56,6 @@ add_library( # Sets the name of the library.
         ${SRC_VISUALIZER}
         ${SRC_METADATA}
 #        ${SRC_FFPLAYER}
-        video_player.cpp
         video_filter.c
         ffprobe_cmd.cpp
         video_cutting.cpp
diff --git a/app/src/main/cpp/video_player.cpp b/app/src/main/cpp/video_player.cpp
deleted file mode 100644
index 69b4907..0000000
--- a/app/src/main/cpp/video_player.cpp
+++ /dev/null
@@ -1,144 +0,0 @@
-//
-// Created by frank on 2018/2/1.
-//
-#include <android/native_window.h>
-#include <android/native_window_jni.h>
-#include <stdio.h>
-#include <unistd.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-#include "libavcodec/avcodec.h"
-#include "libavformat/avformat.h"
-#include "libswscale/swscale.h"
-#include "libavutil/imgutils.h"
-#include "ffmpeg_jni_define.h"
-
-#define TAG "VideoPlayer"
-
-float play_rate = 1;
-long duration = 0;
-
-VIDEO_PLAYER_FUNC(jint, play, jstring filePath, jobject surface) {
-
-    const char *file_name = env->GetStringUTFChars( filePath, JNI_FALSE);
-    LOGE(TAG, "open file:%s\n", file_name);
-    av_register_all();
-    AVFormatContext *pFormatCtx = avformat_alloc_context();
-    if (avformat_open_input(&pFormatCtx, file_name, nullptr, nullptr) != 0) {
-        LOGE(TAG, "Couldn't open file:%s\n", file_name);
-        return -1;
-    }
-    if (avformat_find_stream_info(pFormatCtx, nullptr) < 0) {
-        LOGE(TAG, "Couldn't find stream information.");
-        return -1;
-    }
-    int videoStream = -1, i;
-    for (i = 0; i < pFormatCtx->nb_streams; i++) {
-        if (pFormatCtx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO
-            && videoStream < 0) {
-            videoStream = i;
-        }
-    }
-    if (videoStream == -1) {
-        LOGE(TAG, "couldn't find a video stream.");
-        return -1;
-    }
-
-    //get duration of video
-    if (pFormatCtx->duration != AV_NOPTS_VALUE) {
-        duration = (long) (pFormatCtx->duration / AV_TIME_BASE);
-        LOGE(TAG, "duration==%ld", duration);
-    }
-
-    AVCodecContext *pCodecCtx = pFormatCtx->streams[videoStream]->codec;
-    AVCodec *pCodec = avcodec_find_decoder(pCodecCtx->codec_id);
-    if (pCodec == nullptr) {
-        LOGE(TAG, "couldn't find Codec.");
-        return -1;
-    }
-    if (avcodec_open2(pCodecCtx, pCodec, nullptr) < 0) {
-        LOGE(TAG, "Couldn't open codec.");
-        return -1;
-    }
-
-    ANativeWindow *nativeWindow = ANativeWindow_fromSurface(env, surface);
-    int videoWidth = pCodecCtx->width;
-    int videoHeight = pCodecCtx->height;
-    ANativeWindow_setBuffersGeometry(nativeWindow, videoWidth, videoHeight,
-                                     WINDOW_FORMAT_RGBA_8888);
-    ANativeWindow_Buffer windowBuffer;
-    if (avcodec_open2(pCodecCtx, pCodec, nullptr) < 0) {
-        LOGE(TAG, "Couldn't open codec.");
-        return -1;
-    }
-    AVFrame *pFrame = av_frame_alloc();
-    AVFrame *pFrameRGBA = av_frame_alloc();
-    if (pFrameRGBA == nullptr || pFrame == nullptr) {
-        LOGE(TAG, "Couldn't allocate video frame.");
-        return -1;
-    }
-    int numBytes = av_image_get_buffer_size(AV_PIX_FMT_RGBA, pCodecCtx->width, pCodecCtx->height,
-                                            1);
-
-    uint8_t *buffer = (uint8_t *) av_malloc(numBytes * sizeof(uint8_t));
-    av_image_fill_arrays(pFrameRGBA->data, pFrameRGBA->linesize, buffer, AV_PIX_FMT_RGBA,
-                         pCodecCtx->width, pCodecCtx->height, 1);
-
-    struct SwsContext *sws_ctx = sws_getContext(pCodecCtx->width,
-                                                pCodecCtx->height,
-                                                pCodecCtx->pix_fmt,
-                                                pCodecCtx->width,
-                                                pCodecCtx->height,
-                                                AV_PIX_FMT_RGBA,
-                                                SWS_BILINEAR,
-                                                nullptr,
-                                                nullptr,
-                                                nullptr);
-
-    int frameFinished;
-    AVPacket packet;
-
-    while (av_read_frame(pFormatCtx, &packet) >= 0) {
-        if (packet.stream_index == videoStream) {
-            avcodec_decode_video2(pCodecCtx, pFrame, &frameFinished, &packet);
-            if (frameFinished) {
-                // lock native window
-                ANativeWindow_lock(nativeWindow, &windowBuffer, nullptr);
-                sws_scale(sws_ctx, (uint8_t const *const *) pFrame->data,
-                          pFrame->linesize, 0, pCodecCtx->height,
-                          pFrameRGBA->data, pFrameRGBA->linesize);
-                uint8_t *dst = static_cast<uint8_t *>(windowBuffer.bits);
-                int dstStride = windowBuffer.stride * 4;
-                uint8_t *src = pFrameRGBA->data[0];
-                int srcStride = pFrameRGBA->linesize[0];
-                int h;
-                for (h = 0; h < videoHeight; h++) {
-                    memcpy(dst + h * dstStride, src + h * srcStride, (size_t) srcStride);
-                }
-                ANativeWindow_unlockAndPost(nativeWindow);
-            }
-            usleep((unsigned long) (1000 * 40 * play_rate));
-        }
-        av_packet_unref(&packet);
-    }
-    av_free(buffer);
-    av_free(pFrameRGBA);
-    av_free(pFrame);
-    avcodec_free_context(&pCodecCtx);
-    avformat_close_input(&pFormatCtx);
-    return 0;
-}
-
-VIDEO_PLAYER_FUNC(void, setPlayRate, jfloat playRate) {
-    play_rate = playRate;
-}
-
-VIDEO_PLAYER_FUNC(jint, getDuration) {
-    return duration;
-}
-
-#ifdef __cplusplus
-}
-#endif
\ No newline at end of file