Re: Encoders (Re: Getting rid of SDP) - Timestamps for media

On 03/16/2018 11:27 AM, Cullen Jennings wrote:
>> On Mar 13, 2018, at 10:37 PM, Harald Alvestrand <
>> <>> wrote:
>>> * capture time of frame 
>> are you thinking SMTPE timecodes (absolute capture time, possibly far
>> in the past for recorded media) or RTP-clock-style "timestamp that
>> can be used for relative positioning in time"?
> I have work with SMTPE  timecode a bunch for moving broadcast studios
> to IP. It seems like a bad match for interactive media. Dropframe
> handling alone should be enough to convince anyone. I realize
> broadcast TV needs all that but we don't. 
> I would prefer something that is a direct or indirect mapping to NTP
> time with ms resolution. 
> It might seem like something with no leap seconds, like GPS time, was
> easier to use but I think the operating system end up providing such
> good support for time with leap seconds that it ends up being easier. 

having a clock that doesn't claim to relate to realtime might make life
easier. Also when one does things like stored-clip insertion.

this pretty much replicates the RTP clock.

Surveillance is pervasive. Go Dark.

Received on Friday, 16 March 2018 12:07:02 UTC