Widevine encryption options

--enable_widevine_encryption
	Enable encryption with Widevine key server. User should provide either AES signing key (–aes_signing_key, –aes_signing_iv) or RSA signing key (–rsa_signing_key_path).
--enable_widevine_decryption
	Enable decryption with Widevine key server. User should provide either AES signing key (–aes_signing_key, –aes_signing_iv) or RSA signing key (–rsa_signing_key_path).
--include_common_pssh
	When using Widevine encryption, include an additional v1 PSSH box for the common system ID that includes the key IDs. See https://goo.gl/s8RIhr.
--key_server_url <url>
	Key server url. Required for Widevine encryption and decryption.
--content_id <hex>
	Content identifier that uniquely identifies the content.
--policy <policy>
	The name of a stored policy, which specifies DRM content rights.
--max_sd_pixels <pixels>
	The video track is considered SD if its max pixels per frame is no higher than max_sd_pixels. Default: 442368 (768 x 576).
--max_hd_pixels <pixels>
	The video track is considered HD if its max pixels per frame is higher than max_sd_pixels, but no higher than max_hd_pixels. Default: 2073600 (1920 x 1080).
--max_uhd1_pixels <pixels>
	The video track is considered UHD1 if its max pixels per frame is higher than max_hd_pixels, but no higher than max_uhd1_pixels. Otherwise it is UHD2. Default: 8847360 (4096 x 2160).
--signer <signer>
	The name of the signer.
--aes_signing_key <hex>
	AES signing key in hex string. aes_signing_iv is required if aes_signing_key is specified. This option is exclusive with rsa_signing_key_path.
--aes_signing_iv <hex>
	AES signing iv in hex string.
--rsa_signing_key_path <file path>
	Path to the file containing PKCS#1 RSA private key for request signing. This option is exclusive with aes_signing_key.
--crypto_period_duration <seconds>
	Defines how often key rotates. If it is non-zero, key rotation is enabled.
--group_id <hex>
	Identifier for a group of licenses.