It uses Discontinuous Transmission (DTX) to save bandwidth by not sending data during periods of silence. Are you having trouble playing this file , or RFC 4749 - RTP Payload Format for the G.729.1 Audio Codec
While "g7291" represents the audio technology, the extension indicates that this audio has been wrapped in a standard MPEG-4 container . This is common in professional media transcoding or diagnostic reports where specific codecs are tested for compatibility. Key Details about G.729.1 g7291.mp4
The text likely refers to a video file using the G.729.1 audio codec . G.729.1 is an ITU-T standard for scalable wideband speech and audio coding , often used in VoIP (Voice over IP) and video conferencing to provide high-quality audio at low bit rates. It uses Discontinuous Transmission (DTX) to save bandwidth
Unlike the standard G.729, the .1 version supports wideband audio (50–7000 Hz), making voices sound much clearer. Key Details about G