Hello everyone,
Yes, unlike H.264 the HEVC doesn't provide any encoding tools specific to the 
interlaced format sourced content.
Not to say, the 1080i format is well alive and still very important for some 
broadcasters and markets due to operational distribution infrastructure.
Even, if the interlaced format content is to be encoded it can always be 
deinterlaced prior and as noted no need for re-interlacing it back for display 
devices.
Best regards, 
Andrew

-----Original Message-----
From: video-codec [mailto:[email protected]] On Behalf Of Timothy B. 
Terriberry
Sent: Tuesday, July 07, 2015 2:30 PM
To: [email protected]
Subject: Re: [video-codec] Interlacing support

Thomas Daede wrote:
> Arguments against interlacing:
> - Requires extra features to encode efficiently. HEVC has dropped 
> MBAFF, libvpx has never supported interlacing.
> - Moves deinterlacer complexity to the encoder, which is an easier 
> place to offload complexity
> - There are no internet-connected interlaced displays in common usage

I'll add one more: brings into play a large amount of additional IPR to avoid.

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