由于frame merge时已经过滤无效帧，所以移除多余代码

src/Record/MP4Muxer.cpp

@@ -86,13 +86,7 @@ void MP4MuxerInterface::inputFrame(const Frame::Ptr &frame) {
     int64_t dts_out, pts_out;
 
     switch (frame->getCodecId()) {
-        case CodecH264: {
-            int type = H264_TYPE(*((uint8_t *)frame->data() + frame->prefixSize()));
-            if(type == H264Frame::NAL_SEI){
-                break;
-            }
-        }
-
+        case CodecH264:
         case CodecH265: {
             //这里的代码逻辑是让SPS、PPS、IDR这些时间戳相同的帧打包到一起当做一个帧处理，
             _frame_merger.inputFrame(frame, [&](uint32_t dts, uint32_t pts, const Buffer::Ptr &buffer, bool have_idr) {

src/Record/TsMuxer.cpp

@@ -94,13 +94,7 @@ void TsMuxer::inputFrame(const Frame::Ptr &frame) {
     int64_t dts_out, pts_out;
     _is_idr_fast_packet = !_have_video;
     switch (frame->getCodecId()){
-        case CodecH264: {
-            int type = H264_TYPE(*((uint8_t *) frame->data() + frame->prefixSize()));
-            if (type == H264Frame::NAL_SEI) {
-                break;
-            }
-        }
-
+        case CodecH264:
         case CodecH265: {
             //这里的代码逻辑是让SPS、PPS、IDR这些时间戳相同的帧打包到一起当做一个帧处理，
             _frame_merger.inputFrame(frame, [&](uint32_t dts, uint32_t pts, const Buffer::Ptr &buffer, bool have_idr){

src/Rtp/PSEncoder.cpp

@@ -117,13 +117,7 @@ void PSEncoder::inputFrame(const Frame::Ptr &frame) {
     auto &track_info = it->second;
     int64_t dts_out, pts_out;
     switch (frame->getCodecId()) {
-        case CodecH264: {
-            int type = H264_TYPE(*((uint8_t *) frame->data() + frame->prefixSize()));
-            if (type == H264Frame::NAL_SEI) {
-                break;
-            }
-        }
-
+        case CodecH264:
         case CodecH265: {
             //这里的代码逻辑是让SPS、PPS、IDR这些时间戳相同的帧打包到一起当做一个帧处理，
             _frame_merger.inputFrame(frame, [&](uint32_t dts, uint32_t pts, const Buffer::Ptr &buffer, bool have_idr) {