SDI II Receiver Unable to Lock without VPID - SDI II Receiver Unable to Lock without VPID Description SDI II receiver unable to get frame_locked when the video payload identifier (VPID) is not embedded in the receiving data. This issue affects the Triple rate, Dual-Link and 3G-SDI video standards in 12.1. Resolution There is no workaround for this issue. You need to ensure that the receiving data contains VPID. This issue is fixed in 12.1sp1. Custom Fields values: ['novalue'] Troubleshooting novalue True ['novalue'] ['FPGA Dev Tools Quartus II Software'] 12.1.1 12.1 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']