Audio/Video Encoder

DVB-H is enabling Mobile Television multicast services while 3GPP is tailored for video streaming unicast services to mobile handsets.

MD Video/Audio Encoder provides real-time AV encoding, AV synchronisation and encapsulation into RTP/UDP IP packets for DVB-H & 3GPP mobile video standards.

There are some differences and some commonalities between DVB-H & 3GPP AV Encoding.

Common features are small picture size, encapsulation into RTP/UDP IP packets, real-time operation etc.

They differ in used Video and Audio Codecs. DVB-H defines state-of-the-art H.264 video and AAC audio coding, while 3GPP relies on simpler H.263 video with AMR audio coding.

Due to the H.264 high computing power requirements several DVB-H handset prototypes still use H.263 coding. Video Input can be either composite video (Series 1000), SDI (series 1005) or DVB-S Satellite receiver with MPEG2 Decoder. MD AV Encoder can be deployed in redundant configuration with a fail over switch option in order to eliminate service down time.

Technical Specifications:

Output:

Physical:	1 x Ethernet (10/100 Base T)
File Output:	3GPP, 3GP2, MPEG-4
Protocol:	RTP/UDP; IP Unicast or Multicast,SDP
Dimensions:	19" rack mount 1RU, 431 x 44 x 580 mm
Weight:	14 kg
Control:	X-Windows with preview CML, config file

Video:

Codecs:	H.264, MPEG-4, H.263
Picture resolution:	SQCIF to CIF resolution
Frame per second:	1-30 fps
Data rate:	15 kbps to 2 Mbps
Video Inputs:	Analog Composite (PAL/NTSC), S-Video, SDI - Serial Digital Interface, (625 /525) (Optional), DVB-S (optional), DVB-T (optional)

Audio:

Codecs:	AAC, MP3, AMR
Data rate:	8 to 384 kbps
Sampling Frequency:	8000-44100 Hz
Inputs:	1 Channel (1 stereo or dual mono), 2 Analog Balanced/Unbalanced, DVB-S (optional), DVB-T (optional)