Reproduction steps

Description

While validating TC-WEBRTCP-2.2 for backward compatibility testing (TH v1.6 and DUT v1.5.1), the test case fails during the precondition step while allocating a video stream. The DUT responds with DynamicConstraintError (0xCF) Response to the VideoStreamAllocate command instead of Success Response.

As a result, the test case fails before the WEBRTC session establishment phase begins.

During script analysis, a difference was identified in the VideoStreamAllocate request parameters between the two script versions.
The current v1.6 script sends:

• minFrameRate = 15

whereas the v1.5.1 script sends:

• minFrameRate = 30

QA Analysis:
After modifying the v1.6 TH script to use minFrameRate = 30 and re-running the test, the test case passes successfully.

Failure Logs:

1.5.1 DUT Failure Log:
WEBRTCP-2.2-DUT-FAIL LOG.txt

1.6 TH Failure Log:
TC-WEBRTCP-2_2 (1).log

Passing Logs:

1.5.1 DUT Passing Log:
TC-WEBRTC-2.2(DUT).txt

1.6 TH Passing Log
TC_WEBRTCP_2_2_2026_06_01_12_32_45.log

Environment:
TH Version: 1.6 (SDK SHA: ad9cf71)
DUT Version: 1.5.1 (SDK SHA: e9ecfc2)

Bug prevalence

whenever i do this

GitHub hash of the SDK that was being used

ad9cf71

Platform

raspi

Platform Version(s)

No response

Anything else?

No response