Block Noise is observed in AVC_MEDIUM and AVC_LOW in 4Kp60 pipelines
The digilent PMOD card cannot support the passive source like MICROPHONES. Only active sources are to be connected. Here the source is from the Aux cable which is connected in between the source (laptop) and PMOD card.
For Petalinux related known issues please refer: PetaLinux 2020.2 - Product Update Release Notes and Known Issues
For Out of memory issue please refer AR# 75900
For playback in DP, video input resolution should match to DP's native resolution. This constraint is due to the support of the GUI. In the GUI case if we allow video source other than native resolution(by setting full screen overlay) then the graphics layer will disappear. To recover back GUI user need to kill and relaunch the GUI app. To avoid such condition TRD only supports video input resolution which is equal to DP's native resolution.
For Petalinux related limitations please refer: PetaLinux 2020.2 - Product Update Release Notes and Known Issues