Hello, We have developed a Voip application using PJSIP. When we run a video call, we can see a delay in video as compared to audio. Following are the queries regarding the issue : 1) What is the difference between active and passive media ports? 2) In my application, both audio and video ports are passive. How is the audio video synchronization achieved in PJSIP? 3) Please describe the flow of media(audio and video) in call flow. Thanks and Regards, Akshi Malhotra Staff no : 4901 Group : Fault Tolerance Extn. : 9438 Disclaimer: ---------- This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed.�� ��If you are not the intended recipient you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited. The sender does not accept liability.