Write data in SEI nal units (such as X264 comment blocks)
Write data in SEI nal units (such as X264 comment blocks)

danielrh/losslessh264,danielrh/losslessh264,danielrh/losslessh264,danielrh/losslessh264,danielrh/losslessh264,danielrh/losslessh264,danielrh/losslessh264