What is PCR in Stream?

The PCR is a time reference that is continuously transmitted with each program of a transport stream. The PCR values of a program are permanently assigned to a packet identification (PID) in the transport stream.

What video format is TS?

The . ts video format is a container format for MPEG, known as “Transport Stream”, which is used most frequently by digital broadcasting systems (digital cable, satellite, etc).

What’s the difference between MPEG TS and HLS?

However, unlike HLS, Mpegts is not aware of the network conditions of the remote device and continues to send data at a standard rate. HLS on the other hand, is an adaptive streaming protocol and can sense and switch the resolution on the fly to adapt to changing or poor network conditions.

What is PID in MPEG?

Each table or elementary stream in a transport stream is identified by a 13-bit packet identifier (PID). A demultiplexer extracts elementary streams from the transport stream in part by looking for packets identified by the same PID.

What is MPEG TS & PS?

In the MPEG-2 standard, there are two types of audio video synchronization, TS and PS. TS is Transport Stream which are aimed for communication and broadcasting applications. PS is Program Stream which can be used for storage applications such as DVD.

What is the function of the Program Clock Reference (PCR)?

PCR – Program Clock Reference. Synchronization of the receiver System Time Clock (STC) with the transmitter STC depends on transmitting PCRs through a constant-delay portion of the system. Thus, PCRs are inserted following the encoder buffer and extracted before the receiver buffer. PCRs are inserted with a maximum interval of 100ms.

What is a reference clock in DirectShow?

The reference clock might be provided by a DirectShow filter—typically the audio renderer, which has access to a hardware timer. As a fallback, the Filter Graph Manager can use the system time. Nominally, a reference clock measures time in 100-nanosecond intervals, although the actual accuracy of the clock might be less.

How do I get the reference clock of a filter?

Any object that exposes the IReferenceClock interface can act as the reference clock. The reference clock might be provided by a DirectShow filter—typically the audio renderer, which has access to a hardware timer. As a fallback, the Filter Graph Manager can use the system time.

How do I get the current time of a reference clock?

Nominally, a reference clock measures time in 100-nanosecond intervals, although the actual accuracy of the clock might be less. To retrieve the clock’s current time, call the IReferenceClock::GetTime method.