diff --git a/utils/MediaBase/src/FfmpegDecoder.cpp b/utils/MediaBase/src/FfmpegDecoder.cpp
index b4bbc1d..8ad0f9d 100644
--- a/utils/MediaBase/src/FfmpegDecoder.cpp
+++ b/utils/MediaBase/src/FfmpegDecoder.cpp
@@ -118,22 +118,22 @@ bool FfmpegDecoder::Init(void)
 bool FfmpegDecoder::UnInit(void)
 {
     LogInfo("uninit %s\n", avcodec_get_name(mCodecId));
-    if (mFrame) {
-        av_frame_free(&mFrame);
-        mFrame = nullptr;
-    }
-    if (mCodecCtx) {
-        if (mCodecId != AV_CODEC_ID_H264) {
-            avcodec_free_context(&mCodecCtx);
-            mCodecCtx = nullptr;
-        }
-    }
     av_packet_free(&mPacket);
     mPacket = nullptr;
     if (mParser) {
         av_parser_close(mParser);
         mParser = nullptr;
     }
+    // if (mCodecCtx) {
+    //     // if (mCodecId != AV_CODEC_ID_H264) {
+    //     // }
+    // }
+    avcodec_free_context(&mCodecCtx);
+    mCodecCtx = nullptr;
+    if (mFrame) {
+        av_frame_free(&mFrame);
+        mFrame = nullptr;
+    }
     return true;
 }
 void FfmpegDecoder::DecodeData(const void *data, const size_t &size, const unsigned long long &pts,
diff --git a/utils/MediaBase/src/FfmpegThumbnail.cpp b/utils/MediaBase/src/FfmpegThumbnail.cpp
index 9e9d2ad..bbb73c7 100644
--- a/utils/MediaBase/src/FfmpegThumbnail.cpp
+++ b/utils/MediaBase/src/FfmpegThumbnail.cpp
@@ -68,6 +68,10 @@ void FfmpegThumbnail::UnInit(void)
     }
     avformat_free_context(mOutputFormat);
     fx_system_v2("sync");
+    if (sws_ctx) {
+        sws_freeContext(sws_ctx);
+        sws_ctx = nullptr;
+    }
 }
 bool FfmpegThumbnail::CreateThumbnail(const std::string &outputFile, const void *data, const size_t &size)
 {
@@ -112,13 +116,13 @@ bool FfmpegThumbnail::CreateThumbnail(const std::string &outputFile, const void
     av_dump_format(mOutputFormat, 0, outputFile.c_str(), 1);
     /* open the output file, if needed */
     // if (!(mOutputFormat->oformat->flags & AVFMT_NOFILE)) {
-    ret = avio_open(&mOutputFormat->pb, outputFile.c_str(), AVIO_FLAG_WRITE);
-    if (ret < 0) {
-        char error_str[AV_ERROR_MAX_STRING_SIZE] = {0};
-        LogError("Could not open '%s': %s\n",
-                 outputFile.c_str(),
-                 av_make_error_string(error_str, AV_ERROR_MAX_STRING_SIZE, ret));
-    }
+    // ret = avio_open(&mOutputFormat->pb, outputFile.c_str(), AVIO_FLAG_WRITE);
+    // if (ret < 0) {
+    //     char error_str[AV_ERROR_MAX_STRING_SIZE] = {0};
+    //     LogError("Could not open '%s': %s\n",
+    //              outputFile.c_str(),
+    //              av_make_error_string(error_str, AV_ERROR_MAX_STRING_SIZE, ret));
+    // }
     LogInfo("Open output file\n");
     // }
     av_dict_set_int(&opt, "use_editlist", 0, 0);
@@ -132,6 +136,7 @@ bool FfmpegThumbnail::CreateThumbnail(const std::string &outputFile, const void
         return false;
     }
     av_dict_free(&opt);
+    // return true;
     mDecoder->Init();
     mEncoder->Init(mOutputFormat->flags);
     mStream->time_base = mEncoder->GetTimeBase();
@@ -148,7 +153,11 @@ void FfmpegThumbnail::GetDecodeDataCallback(AVFrame *frame)
     output_frame->format = AV_PIX_FMT_YUV420P;
     output_frame->width = 640;
     output_frame->height = 480;
-    int jpeg_buf_size = av_image_get_buffer_size(AV_PIX_FMT_YUV420P, 640, 480, 1);
+    // output_frame->linesize[0] = 640; // Y plane 的跨度
+    // output_frame->linesize[1] = 320; // U/V planes 的跨度
+    // output_frame->linesize[2] = 320; // U/V planes 的跨度
+
+    int jpeg_buf_size = av_image_get_buffer_size(AV_PIX_FMT_YUV420P, 1920, 2160, 1);
     LogInfo("jpeg_buf_size: %d\n", jpeg_buf_size);
     uint8_t *jpeg_buf = (uint8_t *)av_malloc(jpeg_buf_size);
     av_image_fill_arrays(
@@ -169,8 +178,11 @@ void FfmpegThumbnail::GetDecodeDataCallback(AVFrame *frame)
 
     if (mEncoder) {
         mEncoder->EncodeData(output_frame, mStream, mEncodeCallback);
-        return;
+        // return;
     }
+    av_frame_free(&output_frame);
+    av_free(jpeg_buf);
+    return;
 }
 void FfmpegThumbnail::GetEncodeDataCallback(AVPacket *pkt)
 {