Add --no-info parameter.

- Stops encoder information from being added to bitstream.
- The version information overhead is too big when doing comparisons with
  very short sequences.

README.md

@@ -57,6 +57,7 @@ http://github.com/ultravideo/kvazaar/wiki/List-of-suggested-topics for a list of
                                          0: 64x64, 1: 32x32, 2: 16x16, 3: 8x8
               --pu-depth-intra <int>-<int> : Range for sizes of intra prediction units to try.
                                          0: 64x64, 1: 32x32, 2: 16x16, 3: 8x8, 4: 4x4
+              --no-info              : Don't add information about the encoder to settings.
 
       Video Usability Information:
               --sar <width:height>   : Specify Sample Aspect Ratio

src/config.c

@@ -109,6 +109,8 @@ int config_init(config_t *cfg)
   cfg->pu_depth_intra.min = 1; // 0-4
   cfg->pu_depth_intra.max = 4; // 0-4
 
+  cfg->add_encoder_info = true;
+
   return 1;
 }
 
@@ -505,6 +507,8 @@ static int config_parse(config_t *cfg, const char *name, const char *value)
       }
     }
   }
+  else if OPT("info")
+    cfg->add_encoder_info = atobool(value);
   else
     return 0;
 #undef OPT
@@ -566,6 +570,7 @@ int config_read(config_t *cfg,int argc, char *argv[])
     { "cpuid",              required_argument, NULL, 0 },
     { "pu-depth-inter",     required_argument, NULL, 0 },
     { "pu-depth-intra",     required_argument, NULL, 0 },
+    { "no-info",                  no_argument, NULL, 0 },
     {0, 0, 0, 0}
   };
 

src/config.h

@@ -89,6 +89,8 @@ typedef struct
     int32_t min;
     int32_t max;
   } pu_depth_inter, pu_depth_intra;
+
+  bool add_encoder_info;
 } config_t;
 
 /* Function definitions */

src/encmain.c

@@ -136,6 +136,7 @@ int main(int argc, char *argv[])
             "                                     0: 64x64, 1: 32x32, 2: 16x16, 3: 8x8\n"
             "          --pu-depth-intra <int>-<int> : Range for sizes of intra prediction units to try.\n"
             "                                     0: 64x64, 1: 32x32, 2: 16x16, 3: 8x8, 4: 4x4\n"
+            "          --no-info              : Don't add information about the encoder to settings.\n"
             "\n"
             "  Video Usability Information:\n"
             "          --sar <width:height>   : Specify Sample Aspect Ratio\n"

src/encoder_state-bitstream.c

@@ -720,7 +720,7 @@ static void encoder_state_write_bitstream_main(encoder_state_t * const state) {
   }
 
   // Send Kvazaar version information only in the first frame.
-  if (state->global->frame == 0) {
+  if (state->global->frame == 0 && state->encoder_control->cfg->add_encoder_info) {
     nal_write(stream, PREFIX_SEI_NUT, 0, first_nal_in_au);
     encoder_state_write_bitstream_prefix_sei_version(state);
     bitstream_align(stream);