Grass Valley M-Series iVDR User Manual v.2.0.10 - Manual (Page 307)

20 April 2005 M-Series User Manual 307
Media file system performance
Media file system performance
• Maximum number of clips: 20,000
• Minimum record to play time: 5 second from start of record.
Video network performance
The iVDR supports streaming video network transfers between iVDRs, Profile XP
Media Platforms, or any device that supports General Exchange Format (GXF) as
described in SMPTE 360M.
• Ethernet streaming and Ethernet control on the same network adapter interface is
allowed.
• Can handle four concurrent transfers with all four video channels operating at full
bandwidth. Additional transfers are queued. Priority is given to record/playback
during system bandwidth negotiations.
AVI file encoding requirements for importing
Before importing an AVI file, make sure it meets the following encode requirements.
AVI file encoding requirements:
• Video Compression - DV (SMPTE 314) 25Mb/s
• Encoder type - type 1 (interleaved) or type 2 (non-interleaved)
• Color sampling - 4:1:1 (525 Line NTSC); 4:2:0 (625 Line PAL)
• Resolution - 720 X480 (525), or 720 X 576 (625)
• Frame Rate 29.97Hz - (525 Line), or 25Hz (625 Line)
• Audio Sampling - 16bit PCM, 48Khz sample rate, stereo
Composite analog video input performance
The iVDR can record signals from most non-timebase corrected signal sources such
as color under video playback devices, i.e. VHS or U-Matic VTRs, and low cost
cameras. However, for reliable recording performance some devices may require
external signal conditioning products, i.e. timebase correction.