Adding to client.

app/scrcpy.1

@@ -176,6 +176,14 @@ Set the initial window height.
 
 Default is 0 (automatic).\n
 
+.TP
+.BI "\-\-\codec\-options " 'options'
+options is a list of key=value:type pairs seperated by comma\n
+for the device encoder.\n
+type is optional, Integer by default.\n
+For a list of possible codec options:\n
+developer.android.com/reference/android/media/MediaFormat\n
+
 .SH SHORTCUTS
 
 .TP

app/src/cli.c

@@ -158,6 +158,13 @@ scrcpy_print_usage(const char *arg0) {
         "        Set the initial window width.\n"
         "        Default is 0 (automatic).\n"
         "\n"
+        "    --codec-options 'options'\n"
+        "        'options' is a list of key=value:type pairs seperated by comma\n"
+        "        for the device encoder.\n"
+        "        'type' is optional, Integer by default.\n"
+        "        For a list of possible codec options:\n"
+        "        developer.android.com/reference/android/media/MediaFormat\n"
+        "\n"
         "Shortcuts:\n"
         "\n"
         "    " CTRL_OR_CMD "+f\n"
@@ -468,18 +475,19 @@ guess_record_format(const char *filename) {
 #define OPT_ROTATION               1015
 #define OPT_RENDER_DRIVER          1016
 #define OPT_NO_MIPMAPS             1017
+#define OPT_CODEC_OPTIONS          1018
 
 bool
 scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
     static const struct option long_options[] = {
         {"always-on-top",          no_argument,       NULL, OPT_ALWAYS_ON_TOP},
         {"bit-rate",               required_argument, NULL, 'b'},
+        {"codec-options",          required_argument, NULL, OPT_CODEC_OPTIONS},
         {"crop",                   required_argument, NULL, OPT_CROP},
         {"display",                required_argument, NULL, OPT_DISPLAY_ID},
         {"fullscreen",             no_argument,       NULL, 'f'},
         {"help",                   no_argument,       NULL, 'h'},
-        {"lock-video-orientation", required_argument, NULL,
-                                                  OPT_LOCK_VIDEO_ORIENTATION},
+        {"lock-video-orientation", required_argument, NULL, OPT_LOCK_VIDEO_ORIENTATION},
         {"max-fps",                required_argument, NULL, OPT_MAX_FPS},
         {"max-size",               required_argument, NULL, 'm'},
         {"no-control",             no_argument,       NULL, 'n'},
@@ -490,8 +498,7 @@ scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
         {"record",                 required_argument, NULL, 'r'},
         {"record-format",          required_argument, NULL, OPT_RECORD_FORMAT},
         {"render-driver",          required_argument, NULL, OPT_RENDER_DRIVER},
-        {"render-expired-frames",  no_argument,       NULL,
-                                                  OPT_RENDER_EXPIRED_FRAMES},
+        {"render-expired-frames",  no_argument,       NULL, OPT_RENDER_EXPIRED_FRAMES},
         {"rotation",               required_argument, NULL, OPT_ROTATION},
         {"serial",                 required_argument, NULL, 's'},
         {"show-touches",           no_argument,       NULL, 't'},
@@ -503,8 +510,7 @@ scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
         {"window-y",               required_argument, NULL, OPT_WINDOW_Y},
         {"window-width",           required_argument, NULL, OPT_WINDOW_WIDTH},
         {"window-height",          required_argument, NULL, OPT_WINDOW_HEIGHT},
-        {"window-borderless",      no_argument,       NULL,
-                                                  OPT_WINDOW_BORDERLESS},
+        {"window-borderless",      no_argument,       NULL, OPT_WINDOW_BORDERLESS},
         {NULL,                     0,                 NULL, 0  },
     };
 
@@ -639,6 +645,9 @@ scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
             case OPT_NO_MIPMAPS:
                 opts->mipmaps = false;
                 break;
+            case OPT_CODEC_OPTIONS:
+                opts->codec_options = optarg;
+                break;
             default:
                 // getopt prints the error message on stderr
                 return false;

app/src/scrcpy.c

@@ -292,6 +292,7 @@ scrcpy(const struct scrcpy_options *options) {
         .lock_video_orientation = options->lock_video_orientation,
         .control = options->control,
         .display_id = options->display_id,
+        .codec_options = options->codec_options,
     };
     if (!server_start(&server, options->serial, &params)) {
         return false;

app/src/scrcpy.h

@@ -16,6 +16,7 @@ struct scrcpy_options {
     const char *window_title;
     const char *push_target;
     const char *render_driver;
+    const char *codec_options;
     enum recorder_format record_format;
     struct port_range port_range;
     uint16_t max_size;
@@ -47,6 +48,7 @@ struct scrcpy_options {
     .window_title = NULL, \
     .push_target = NULL, \
     .render_driver = NULL, \
+    .codec_options = NULL, \
     .record_format = RECORDER_FORMAT_AUTO, \
     .port_range = { \
         .first = DEFAULT_LOCAL_PORT_RANGE_FIRST, \

app/src/server.c

@@ -268,6 +268,7 @@ execute_server(struct server *server, const struct server_params *params) {
         "true", // always send frame meta (packet boundaries + timestamp)
         params->control ? "true" : "false",
         display_id_string,
+        params->codec_options ? params->codec_options : "-",
     };
 #ifdef SERVER_DEBUGGER
     LOGI("Server debugger waiting for a client on device port "

app/src/server.h

@@ -44,6 +44,7 @@ struct server {
 
 struct server_params {
     const char *crop;
+    const char *codec_options;
     struct port_range port_range;
     uint16_t max_size;
     uint32_t bit_rate;