Patent ID: 9749645
Date: 2017-08-29
CPC Classifications: H04N

Claim:
1. A method comprising: dividing, by an encoder implemented by a computing device, a video frame into multiple coding units, the encoder being configured with a requirement to split transform units that are larger than a predetermined maximum transform unit size; dividing, by the encoder, a coding unit of the multiple coding units into multiple transform units, each of the multiple transform units being associated with a coded-block-flag indicating whether or not the transform unit includes residual information, the multiple transform units including preceding transform units and a last transform unit; determining, by the encoder, that each of the preceding transform units is associated with a coded-block-flag indicating that the preceding transform unit does not include residual information; determining, by the encoder, that a size of a transform unit of the multiple transform units is less than or equal to the predetermined maximum transform unit size; and based at least in part on the determining that each of the preceding transform units is associated with a coded-block-flag indicating that the preceding transform units does not include residual information and the determining that the size of the transform unit is less than or equal to the predetermined maximum transform unit size, determining that the last transform unit is associated with a coded-block-flag indicating that the last transform unit includes residual information.