Video conferencing over IP networks

A non-transitory computer-readable medium comprising code that, when executed, causes at least one processor of a first computing device to perform the operations of:

• establishing, by the at least one processor, a first communication link over a packet network between a client component of the first computing device and a video communications server;
• receiving, by the at least one processor and from the video communications server, instructions for initiating a video teleconference between the first computing device and a second computing device;
• establishing, by the at least one processor, a second communication link over the packet network between a server component of the first computing device and the second computing device based on the received instructions;
• transmitting, by the at least one processor and during the video teleconference, audio and video packets via the second communication link, wherein the audio and video packets respectively comprise audio and video data;
• and
• transmitting, by the at least one processor and during the video teleconference, synchronization packets via the second communication link, wherein the audio and video packets are synchronized for output of the audio and video data at the second computing device based on synchronization information comprised in the synchronization packets.

A first computing device comprising:

• at least one memory comprising instructions;
• and
• at least one processor configured to execute the instructions, wherein executing the instructions causes the at least one processor to perform the operations of:
• establishing, by the at least one processor, a first communication link over a packet network between a client component of the first computing device and a video communications server;
• receiving, by the at least one processor and from the video communications server, instructions for initiating a video teleconference between the first computing device and a second computing device;
• establishing, by the at least one processor, a second communication link over the packet network between a server component of the first computing device and the second computing device based on the received instructions;
• transmitting, by the at least one processor and during the video teleconference, audio and video packets via the second communication link, wherein the audio and video packets respectively comprise audio and video data;
• and
• transmitting, by the at least one processor and during the video teleconference, synchronization packets via the second communication link, wherein the audio and video packets are synchronized for output of the audio and video data at the second computing device based on synchronization information comprised in the synchronization packets.