Apparatus, including a host processor, which is configured to receive video data encapsulated in a standard definition transmission format, and to store the encapsulated video data in a memory. The apparatus further includes a data converter, which is configured to receive high definition video data as a sequence of packets and to encapsulate the sequence of packets in the standard definition transmission format. The data converter is also configured to convey the encapsulated packets to the host processor so that the host processor stores the packets in the memory.