Re: [libav-devel] [PATCH] h264: Add support for alternative transfer characterics SEI

2017-08-10 Thread Luca Barbato
On 08/08/2017 16:06, Vittorio Giovara wrote: > The use of this SEI is for backward compatibility in HLG HDR systems: > older devices that cannot interpret the "arib-std-b67" transfer will > get the compatible transfer (usually bt709 or bt2020) from the VUI, > while newer devices that can interpret

[libav-devel] [PATCH] h264: Add support for alternative transfer characterics SEI

2017-08-08 Thread Vittorio Giovara
The use of this SEI is for backward compatibility in HLG HDR systems: older devices that cannot interpret the "arib-std-b67" transfer will get the compatible transfer (usually bt709 or bt2020) from the VUI, while newer devices that can interpret HDR will read the SEI and use its value instead.