#define CERTIFICATE_VALIDITY_PERIOD (10 * 365)
#define SIGN_LANGUAGE_WIDTH 480
#define SIGN_LANGUAGE_HEIGHT 640
+#define SIGN_LANGUAGE_VIDEO_FRAME_RATE 24
+#define SIGN_LANGUAGE_AUDIO_FRAME_RATE 48000
+#define SIGN_LANGUAGE_CHUNK_LENGTH_IN_SECONDS 2
+#define AUDIO_BYTES_PER_SAMPLE 3
#endif