User manual

Troubleshooting
62 Harmony 2ES and 4ES
Stuttering files during playback
Irregular playback on single and multiple channels can be
caused by a number of conditions:
• Cross-channel synchronization requires equal playback
duration of MPEG files.
If a problem occurs during cross-channel synchronized
playback, verify that the file length of matching MPEG
files have equal numbers of frames. The Harmony
measures file length by frames rather than playback
time. In addition check that the bitrate for all channels
is equal.
• The bit rate of the MPEG files being played exceed the
system capabilities.
The Focus Enhancements MPEG decoder boards and
digital servers all have a maximum sustained bit rate
that can be delivered. Refer to the system board and
specifications for information. Please consult your
Focus Enhancements representative prior to encoding
or designing your installation if there are any questions.
• Incorrect channel to drive mapping in multi-card
systems with multiple content drives. For more
information see
Multi-Card Servers on page 25.
Video blocks or stutters when starting playback
• Be sure buffers are fully loaded before calling a
playback command. Usually following the initial buffer
load, a delay is required.
Do Not Mix Harmony 2ES/4ES with Earlier Harmony or ReelTime
Boards