diff -Nru a/src/ffDiaporama/engine/cBaseMediaFile.cpp b/src/ffDiaporama/engine/cBaseMediaFile.cpp
--- a/src/ffDiaporama/engine/cBaseMediaFile.cpp	2014-06-26 06:54:45.000000000 +0200
+++ b/src/ffDiaporama/engine/cBaseMediaFile.cpp	2018-10-21 08:50:39.277183785 +0200
@@ -2886,8 +2886,8 @@
             .arg(LibavVideoFile->streams[VideoStreamNumber]->codec->sample_aspect_ratio.num)
             .arg(LibavVideoFile->streams[VideoStreamNumber]->codec->sample_aspect_ratio.den);
 
-        AVFilter *srcFilter=avfilter_get_by_name("buffer");
-        AVFilter *outFilter=avfilter_get_by_name("nullsink");
+        const AVFilter *srcFilter=avfilter_get_by_name("buffer");
+        const AVFilter *outFilter=avfilter_get_by_name("nullsink");
 
         if ((result=avfilter_graph_create_filter(&VideoFilterIn,srcFilter,"src",args.toLocal8Bit().constData(),NULL,VideoFilterGraph))<0) {
             ToLog(LOGMSG_CRITICAL,QString("Error in cVideoFile::VideoFilter_Open : avfilter_graph_create_filter: src"));
@@ -2912,8 +2912,8 @@
             .arg(LibavVideoFile->streams[VideoStreamNumber]->codec->sample_aspect_ratio.num)
             .arg(LibavVideoFile->streams[VideoStreamNumber]->codec->sample_aspect_ratio.den);
 
-        AVFilter *srcFilter=avfilter_get_by_name("buffer");
-        AVFilter *outFilter=avfilter_get_by_name("buffersink");
+        const AVFilter *srcFilter=avfilter_get_by_name("buffer");
+        const AVFilter *outFilter=avfilter_get_by_name("buffersink");
 
         if ((result=avfilter_graph_create_filter(&VideoFilterIn,srcFilter,"src",args.toLocal8Bit().constData(),NULL,VideoFilterGraph))<0) {
             ToLog(LOGMSG_CRITICAL,QString("Error in cVideoFile::VideoFilter_Open : avfilter_graph_create_filter: src"));
@@ -2939,8 +2939,8 @@
                  LibavVideoFile->streams[VideoStreamNumber]->codec->sample_aspect_ratio.num,LibavVideoFile->streams[VideoStreamNumber]->codec->sample_aspect_ratio.den
         );
 
-        AVFilter *srcFilter=avfilter_get_by_name("buffer");
-        AVFilter *outFilter=avfilter_get_by_name("buffersink");
+        const AVFilter *srcFilter=avfilter_get_by_name("buffer");
+        const AVFilter *outFilter=avfilter_get_by_name("buffersink");
 
         if ((result=avfilter_graph_create_filter(&VideoFilterIn,srcFilter,"in",args,NULL,VideoFilterGraph))<0) {
             ToLog(LOGMSG_CRITICAL,QString("Error in cVideoFile::VideoFilter_Open : avfilter_graph_create_filter: src"));
diff -Nru a/src/ffDiaporama/engine/cDeviceModelDef.h b/src/ffDiaporama/engine/cDeviceModelDef.h
--- a/src/ffDiaporama/engine/cDeviceModelDef.h	2014-04-12 06:41:33.000000000 +0200
+++ b/src/ffDiaporama/engine/cDeviceModelDef.h	2018-10-21 08:48:59.540554113 +0200
@@ -60,8 +60,7 @@
 #include <libavformat/avformat.h>
 #include <libavformat/avio.h>
 
-#include "libavfilter/avfilter.h"
-#include "libavfilter/avfiltergraph.h"
+#include <libavfilter/avfilter.h>
 
 #if (LIBAVUTIL_VERSION_MICRO<100)&&(LIBAVCODEC_VERSION_MICRO<100)&&(LIBAVFORMAT_VERSION_MICRO<100)&&(LIBAVDEVICE_VERSION_MICRO<100)&&(LIBAVFILTER_VERSION_MICRO<100)&&(LIBSWSCALE_VERSION_MICRO<100)
     #define LIBAV
diff -Nru a/src/ffDiaporama/engine/_EncodeVideo.cpp b/src/ffDiaporama/engine/_EncodeVideo.cpp
--- a/src/ffDiaporama/engine/_EncodeVideo.cpp	2014-06-23 09:39:23.000000000 +0200
+++ b/src/ffDiaporama/engine/_EncodeVideo.cpp	2018-10-21 09:03:44.958136239 +0200
@@ -387,7 +387,7 @@
             ||(!strcmp(Container->oformat->name,"mpegts"))
             ||(!strcmp(Container->oformat->name,"3gp"))
         )
-        (*Stream)->codec->flags|=CODEC_FLAG_GLOBAL_HEADER;
+        (*Stream)->codec->flags|=AV_CODEC_FLAG_GLOBAL_HEADER;
 
     int ThreadC =((getCpuCount()/*-1*/)>1)?(getCpuCount()-1):1;
     if (ThreadC>0) (*Stream)->codec->thread_count=ThreadC;
@@ -453,9 +453,9 @@
         VideoStream->codec->qmax    =ImageHeight<=576?63:51;                av_dict_set(&opts,"qmax",QString("%1").arg(VideoStream->codec->qmax).toUtf8(),0);
         VideoStream->codec->qmin    =ImageHeight<=576?1:11;                 av_dict_set(&opts,"qmin",QString("%1").arg(VideoStream->codec->qmin).toUtf8(),0);
         VideoStream->codec->mb_lmin =VideoStream->codec->qmin*FF_QP2LAMBDA;
-        VideoStream->codec->lmin    =VideoStream->codec->qmin*FF_QP2LAMBDA;
+        av_dict_set(&opts,"lmin",QString("%1").arg(VideoStream->codec->mb_lmin).toUtf8(),0);
         VideoStream->codec->mb_lmax =VideoStream->codec->qmax*FF_QP2LAMBDA;
-        VideoStream->codec->lmax    =VideoStream->codec->qmax*FF_QP2LAMBDA;
+        av_dict_set(&opts,"lmax",QString("%1").arg(VideoStream->codec->mb_lmax).toUtf8(),0);
 
         if (ImageHeight<=720) av_dict_set(&opts,"profile","0",0); else av_dict_set(&opts,"profile","1",0);
         if (ImageHeight>576)  av_dict_set(&opts,"slices","4",0);