HELO Plus H.264 Streaming and Recording Encoder v1.0 75 www.aja.com
Appendix A – Specifications
HELO Plus Tech Specs
Video Formats
• (HD) 1080p 23.98, 24, 25, 29.97, 30, 50, 59.94, 60
• (HD) 1080i 50, 59.94, 60
• (HD) 720p 50, 59.94, 60
• (SD) 525i, 625i
Video Codec Support
• H.264/MPEG-4(part 10) Encoder
Video Encoding Parameters
• 100 kbps to 20 Mbps. Bit rate may be set independently for Encoder1 and
Encoder 2.
• Up to 1080p60
• Supports Baseline, Main and High Profiles
Audio Encoding Parameters
• 32 kbps to 256 kbps
• 48 kHz 2-channel stereo
• MPEG-4 AAC-LC
Protocols
• RTMP, RTMPS, RTMPT, RTMPE, RTMPTE, RTMPTS, RTSP, HLS RTP-TS/UDP-
TS Unicast and Multicast, SRT (caller mode). RTSP and HLS client sessions
combined limited to a total of 10. RTSP limited to a single server session.
Storage
• 1x USB port (USB 2.0 and USB 3.0 media, exFAT or FAT32)
• 1x SD card slot, SD, SDHC, SDXC cards (exFAT)
• Mounted Network Share (SMB or NFS)
Video Input Digital
• 1x 3G-SDI, SMPTE-259/292/296/424, 10-bit
• Single Link 4:2:2 (1x BNC)
• 1x HDMI Standard Type A connector
• HDMI v1.4a, RGB or YCbCr
Video Output Digital
• 1x 3G-SDI, SMPTE-259/292/296/424, 10-bit
• Single Link 4:2:2 (1x BNC)
• 1x HDMI Standard Type A connector
• HDMI v1.4a, RGB or YCbCr
Audio Input Digital
• 2-channel, 24-bit SDI embedded audio, 48 kHz sample rate, synchronous
• 2-channel, 24-bit HDMI embedded audio, 48 kHz sample rate, synchronous
