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Supported Bluetooth devices for Video Calls (HSP and HFP)

Blitzz supports Bluetooth devices using HSP (Headset Profile) and HFP (Hands-Free Profile) for real-time, bidirectional audio communication, making them suitable for voice calls and video conferencing. In contrast, A2DP (Advanced Audio Distribution Profile) is optimized for high-quality, one-way audio streaming, such as music playback, but introduces latency and lacks bidirectional capabilities, making it unsuitable for real-time communication.

HSP and HFP are designed for different uses but often overlap. HFP, primarily for car hands-free systems, supports advanced functions like voice dialing and call management. HSP is simpler, used mainly for wireless headsets with basic controls. Both profiles are common in modern Bluetooth headsets, providing low latency and supporting clear bidirectional audio, crucial for phone and video calls despite their lower fidelity compared to A2DP.

A2DP focuses on high-quality audio streaming with high bitrate transmission, ideal for music but not for real-time communication due to its significant audio delay (100-150 milliseconds) and unidirectional nature. While excellent for delivering superior sound in music and media, A2DP's latency and single-direction audio transmission make it unsuitable for applications requiring immediate audio feedback, such as voice or video calls.

In summary, HSP and HFP are the go-to profiles for selecting your Bluetooth Device for video calls due to their low-latency, bidirectional audio capabilities, whereas A2DP excels in scenarios where high-quality, one-way audio streaming is needed but is less effective for real-time communication tasks.

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