lower default data rate

1 files changed, 25 insertions, 11 deletions

diff --git a/rotord/src/libavwrapper.cpp b/rotord/src/libavwrapper.cpp
index c4d267a..c3fa235 100644
--- a/rotord/src/libavwrapper.cpp
+++ b/rotord/src/libavwrapper.cpp
@@ -174,6 +174,8 @@ bool libav::exporter::record(std::string filename){
     }
     fmt = oc->oformat;
 
+    av_opt_set(oc->priv_data, "profile", "baseline", AV_OPT_SEARCH_CHILDREN);
+
 
     // Add the audio and video streams using the default format codecs
     // * and initialize the codecs. //
@@ -181,7 +183,7 @@ bool libav::exporter::record(std::string filename){
     audio_st = NULL;
 
     fmt->video_codec=AV_CODEC_ID_H264; //AV_CODEC_ID_MPEG4
-    //fmt->audio_codec=AV_CODEC_MP3; //guessing, 011013
+    fmt->audio_codec=AV_CODEC_ID_AAC; //guessing, 011013
 
 
     if (fmt->video_codec != AV_CODEC_ID_NONE) {
@@ -205,11 +207,22 @@ bool libav::exporter::record(std::string filename){
     video_st->codec->gop_size = 75; /* emit one intra frame every 75 frames */
     video_st->codec->pix_fmt = PIX_FMT_YUV420P;
 
+    cerr<<"Libav::exporter setting bitrate to "<<bitRate<<endl;
+
+
+    video_st->codec->bit_rate = bitRate; //need to deal with resolution etc
+    video_st->codec->rc_max_rate = bitRate; 
+    video_st->codec->rc_min_rate = 0; 
 
-    //video_st->codec->bit_rate = bitRate; //need to deal with resolution etc
-    //video_st->codec->rc_max_rate = bitRate; 
-    //video_st->codec->rc_min_rate = 0; 
+    //added 131113
+    video_st->codec->rc_buffer_size = bitRate * 2;
 
+    //av_dict_set(&options, "profile", "baseline", 0);
+    //video_st->codec->flags2 = CODEC_FLAG2_FASTPSKIP;
+    video_st->codec->profile = FF_PROFILE_H264_BASELINE;
+    video_st->codec->level = 13;
+
+    
     //how to set profile????? 190913
     //this causes a crash
     //av_opt_set(video_st->codec->priv_data,"profile",FF_PROFILE_H264_CONSTRAINED_BASELINE, 0); 
@@ -218,6 +231,8 @@ bool libav::exporter::record(std::string filename){
     // http://libav-users.943685.n4.nabble.com/Libav-user-H264-encoding-set-target-average-bitrate-td3912529.html
     // http://trac.ffmpeg.org/wiki/x264EncodingGuide
 
+
+
     // Now that all the parameters are set, we can open the audio and
     // * video codecs and allocate the necessary encode buffers. //
     
@@ -363,6 +378,7 @@ void libav::exporter::finishRecord(){
 
 AVStream* libav::exporter::add_stream(AVFormatContext *oc, AVCodec **codec,enum AVCodecID codec_id)
     {
+        //removed some of the repeats from record() 141113
         AVCodecContext *c;
         AVStream *st;
 
@@ -394,13 +410,11 @@ AVStream* libav::exporter::add_stream(AVFormatContext *oc, AVCodec **codec,enum
 
         case AVMEDIA_TYPE_VIDEO:
             c->codec_id = codec_id;
+        
+            //c->bit_rate = bitRate; //need to deal with resolution etc
 
-
-            
-            c->bit_rate = bitRate; //need to deal with resolution etc
-
-            c->rc_max_rate = bitRate; 
-            c->rc_min_rate = 0; 
+           // c->rc_max_rate = bitRate; 
+            //c->rc_min_rate = 0; 
             //c->rc_buffer_size = Profile()->m_videoMaxVopSize;  //??
 
             /*
@@ -419,7 +433,7 @@ AVStream* libav::exporter::add_stream(AVFormatContext *oc, AVCodec **codec,enum
             // * identical to 1. //
             c->time_base.den = frameRate;
             c->time_base.num = 1;
-            c->gop_size      = 12; // emit one intra frame every twelve frames at most //
+           // c->gop_size      = 12; // emit one intra frame every twelve frames at most //
             c->pix_fmt       = AV_PIX_FMT_YUV420P; //ADDED HARDCODED TJR 280513
             if (c->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
                 // just for testing, we also add B frames //