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ID:TR07P08737
Added on: 2018-07-26
Last Update: 2018-10-11
Solved in version: 6.3.6
Platform: All Platforms
Product: NoMachine Server
Severity: Serious
Status: Solved
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Image quality issues occurring when H.264 codec is used and multi-pass encoding is disabled

If H.264 encoding is enabled, the image of the remote screen sometimes looks blurry.

This issue is visible if multi-pass display encoding is disabled. The multi-pass function refines the image progressively to the target quality, so imperfections can be still visible but for a very short time. When this refinement is disabled, the image should be sent directly with target quality, but it stays blurred.

The issue has been reproduced when using the H.264 software encoding and affects Windows and Linux client as well.

Disabling post-processing on client side alleviates the problem.

 

SOLVED, Released in version 6.3.6