fix webrtc to rtmp multi slice on frame error

src/Extension/H264Rtmp.cpp

@@ -183,7 +183,7 @@ void H264RtmpEncoder::inputFrame(const Frame::Ptr &frame) {
         }
     }
 
-    if(_lastPacket && (_lastPacket->time_stamp != frame->dts() || type == H264Frame::NAL_B_P)) {
+    if(_lastPacket && (_lastPacket->time_stamp != frame->dts() || pcData[1]&0x80 != 0)) {
         RtmpCodec::inputRtmp(_lastPacket);
         _lastPacket = nullptr;
     }
@@ -214,10 +214,12 @@ void H264RtmpEncoder::inputFrame(const Frame::Ptr &frame) {
     _lastPacket->buffer.append((char *) &size, 4);
     _lastPacket->buffer.append(pcData, iLen);
     _lastPacket->body_size = _lastPacket->buffer.size();
+    /*
     if (type == H264Frame::NAL_B_P) {
         RtmpCodec::inputRtmp(_lastPacket);
         _lastPacket = nullptr;
     }
+    */
 }
 
 void H264RtmpEncoder::makeVideoConfigPkt() {