diff --git a/rtc_tools/BUILD.gn b/rtc_tools/BUILD.gn
index e3b9eb1..9df3843 100644
--- a/rtc_tools/BUILD.gn
+++ b/rtc_tools/BUILD.gn
@@ -242,6 +242,7 @@
 
   rtc_executable("rgba_to_i420_converter") {
     visibility = [ "*" ]
+    testonly = true
     sources = [
       "converter/converter.cc",
       "converter/converter.h",
@@ -249,8 +250,9 @@
     ]
 
     deps = [
-      ":command_line_parser",
       "../common_video",
+      "//third_party/abseil-cpp/absl/flags:flag",
+      "//third_party/abseil-cpp/absl/flags:parse",
       "//third_party/libyuv",
     ]
   }
diff --git a/rtc_tools/converter/rgba_to_i420_converter.cc b/rtc_tools/converter/rgba_to_i420_converter.cc
index 89fbf95..cf352e6 100644
--- a/rtc_tools/converter/rgba_to_i420_converter.cc
+++ b/rtc_tools/converter/rgba_to_i420_converter.cc
@@ -12,8 +12,24 @@
 #include <stdlib.h>
 #include <string>
 
+#include "absl/flags/flag.h"
+#include "absl/flags/parse.h"
 #include "rtc_tools/converter/converter.h"
-#include "rtc_tools/simple_command_line_parser.h"
+
+ABSL_FLAG(int, width, -1, "Width in pixels of the frames in the input file");
+ABSL_FLAG(int, height, -1, "Height in pixels of the frames in the input file");
+ABSL_FLAG(std::string,
+          frames_dir,
+          ".",
+          "The path to the directory where the frames reside");
+ABSL_FLAG(std::string,
+          output_file,
+          "output.yuv",
+          " The output file to which frames are written");
+ABSL_FLAG(bool,
+          delete_frames,
+          false,
+          " Whether or not to delete the input frames after the conversion");
 
 /*
  * A command-line tool based on libyuv to convert a set of RGBA files to a YUV
@@ -24,60 +40,39 @@
  * --height=<height_of_input_frames>
  */
 int main(int argc, char* argv[]) {
-  std::string program_name = argv[0];
-  std::string usage =
-      "Converts RGBA raw image files to I420 frames for YUV.\n"
-      "Example usage:\n" +
-      program_name +
-      " --frames_dir=. --output_file=output.yuv --width=320 --height=240\n"
-      "IMPORTANT: If you pass the --delete_frames command line parameter, the "
-      "tool will delete the input frames after conversion.\n"
-      "Command line flags:\n"
-      "  - width(int): Width in pixels of the frames in the input file."
-      " Default: -1\n"
-      "  - height(int): Height in pixels of the frames in the input file."
-      " Default: -1\n"
-      "  - frames_dir(string): The path to the directory where the frames "
-      "reside."
-      " Default: .\n"
-      "  - output_file(string): The output file to which frames are written."
-      " Default: output.yuv\n"
-      "  - delete_frames(bool): Whether or not to delete the input frames after"
-      " the conversion. Default: false.\n";
+  absl::ParseCommandLine(argc, argv);
+  // TODO(bugs.webrtc.org/10616): Add program usage message when Abseil
+  // flags supports it.
+  // std::string usage =
+  //     "Converts RGBA raw image files to I420 frames for YUV.\n"
+  //     "Example usage:\n" +
+  //     program_name +
+  //     " --frames_dir=. --output_file=output.yuv --width=320 --height=240\n"
+  //     "IMPORTANT: If you pass the --delete_frames command line parameter, the
+  //     " "tool will delete the input frames after conversion.\n" "Command line
+  //     flags:\n" "  - width(int): Width in pixels of the frames in the input
+  //     file." " Default: -1\n" "  - height(int): Height in pixels of the
+  //     frames in the input file." " Default: -1\n" "  - frames_dir(string):
+  //     The path to the directory where the frames " "reside." " Default: .\n"
+  //     "  - output_file(string): The output file to which frames are written."
+  //     " Default: output.yuv\n"
+  //     "  - delete_frames(bool): Whether or not to delete the input frames
+  //     after" " the conversion. Default: false.\n";
 
-  webrtc::test::CommandLineParser parser;
-
-  // Init the parser and set the usage message
-  parser.Init(argc, argv);
-  parser.SetUsageMessage(usage);
-
-  parser.SetFlag("width", "-1");
-  parser.SetFlag("height", "-1");
-  parser.SetFlag("frames_dir", ".");
-  parser.SetFlag("output_file", "output.yuv");
-  parser.SetFlag("delete_frames", "false");
-  parser.SetFlag("help", "false");
-
-  parser.ProcessFlags();
-  if (parser.GetFlag("help") == "true") {
-    parser.PrintUsageMessage();
-    exit(EXIT_SUCCESS);
-  }
-  parser.PrintEnteredFlags();
-
-  int width = strtol((parser.GetFlag("width")).c_str(), NULL, 10);
-  int height = strtol((parser.GetFlag("height")).c_str(), NULL, 10);
+  int width = absl::GetFlag(FLAGS_width);
+  int height = absl::GetFlag(FLAGS_height);
 
   if (width <= 0 || height <= 0) {
     fprintf(stderr, "Error: width or height cannot be <= 0!\n");
     return -1;
   }
 
-  bool del_frames = (parser.GetFlag("delete_frames") == "true") ? true : false;
+  bool del_frames = absl::GetFlag(FLAGS_delete_frames);
 
   webrtc::test::Converter converter(width, height);
   bool success = converter.ConvertRGBAToI420Video(
-      parser.GetFlag("frames_dir"), parser.GetFlag("output_file"), del_frames);
+      absl::GetFlag(FLAGS_frames_dir), absl::GetFlag(FLAGS_output_file),
+      del_frames);
 
   if (success) {
     fprintf(stdout, "Successful conversion of RGBA frames to YUV video!\n");