qmin/qmax=1 seems to be required for high quality images

Author: connortechnology

src/zm_stream.cpp

@@ -61,15 +61,19 @@ bool StreamBase::initContexts(int p_width, int p_height, unsigned int quality) {
     Error("Could not allocate jpeg codec context");
     return false;
   }
-
-  /*
-  mJpegCodecContext->bit_rate = bitrate;
-  */
+  mJpegCodecContext->bit_rate = 2000000;
   mJpegCodecContext->width = p_width;
   mJpegCodecContext->height = p_height;
-  mJpegCodecContext->qcompress = quality/100; // 0-1
+  mJpegCodecContext->qcompress = quality/100.0; // 0-1
+  mJpegCodecContext->qmax = 1;
+  mJpegCodecContext->qmin = 1; //quality/100.0; // 0-1
+  mJpegCodecContext->global_quality = quality/100.0; // 0-1
+  /*
+  mJpegCodecContext->qscale = 1;
+   */
   mJpegCodecContext->time_base= (AVRational) {1,25};
   mJpegCodecContext->pix_fmt = AV_PIX_FMT_YUVJ420P;
+  Debug(1, "initting to %dx%d qcompress %f", p_width, p_height, quality/100.0);
 
   if (avcodec_open2(mJpegCodecContext, mJpegCodec, NULL) < 0) {
     Error("Could not open mjpeg codec");