| 摘要 |
Techniques and mechanisms for processing portions of an audio-video data stream. In an embodiment, a device operates in a first mode to download via a network first data of an AV stream, the first data encoded according to a first coding scheme. Based on a current state of the network, the device may transition to a second mode to download second data of the AV stream which is encoded according to a second coding scheme. In another embodiment, only one of the first coding scheme and the second coding scheme supports a scalability feature. The device further evaluates the first downloaded data and the second downloaded data to determine whether other AV data is to be downloaded to mitigate a change in a quality of experience for a resulting AV display. |
