Tuning For Latency; Figure 11 Tuning For Various Use Cases - Z3 Technology Z3-DM8169-APP-L1-RPS User Manual

5.10 Tuning for Latency

For latency, the key parameters to work with are TS Lowlat Mode, Maximum Delay and Number of B-
frames.
TS Lowlat Mode causes the TS muxer to operate in low latency mode.
Maximum Delay defines the number of milliseconds of buffering the encoder has to work with. The higher
this value, the more buffers it has to work with and the more time it has to "smooth things out" for
challenging content. However, a higher value also causes latency to increase accordingly. To minimize
latency, this value should be set to the lowest possible value. The lowest value Z3 recommends is 50.
B-frames improve the quality of the picture, but they also increase the latency by one frame time. To
minimize latency, B-frames should be disabled (done by setting "Number of B-frames" to 1).
Figure 11 shows the suggested values for TS Lowlat Mode, Maximum Delay and Number of B-frames for
three common use cases:
Case 1: Highest Quality, Highest Latency
Case 2: Good Quality, Standard Latency
Case 3: Normal Quality, Lowest Latency
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Figure 11 Tuning for Various Use Cases

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Z3-DM8169-APP-L1-RPS V2.01.10
TS Maximum
Lowlat Delay
0 9999
0 2000
1 50
20
# of B-frames
3
2
1