[Live-devel] How to get the time_scale value from H264/RTSP stream

[Sergio Andrés Basurco Mancisidor]

PS: This happens when there are B-frames in the h264 stream

El vie., 29 sept. 2017 a las 7:10, Sergio Andrés Basurco Mancisidor (<
sergio.b at coherentsynchro.com>) escribió:

> What I observe is that the NAL units used for a single decoded frame have
> different presentation times. In that case I don't know which time to use
> for the given frame.
>
> El vie., 29 sept. 2017 a las 0:19, Ross Finlayson (<finlayson at live555.com>)
> escribió:
>
>> > Indeed I am using Live555 as the RTSP client side, and I'm able to
>> connect and receive the NAL units and the sps-pps information from the
>> camera.
>> >
>> > Maybe you're right and my issue is completely on the decoding side, as
>> I'm failing to find the timestamp values that will allow me to playback the
>> stream.
>> >
>> > Specifically, I receive a "presentationTimestamp" from Live555 together
>> with the NAL unit. I am not certain on how to use it in order to
>> synchronize playback.
>>
>> This “presentationTimestamp” is exactly what you use.  It represents the
>> (relative) time at which the corresponding NAL unit should be displayed.
>>
>> Developers who use our software (including you) never need to concern
>> themselves with RTP timestamps.  (Our software automatically converts RTP
>> timestamps to presentation times.)  For more information, see
>>         http://live555.com/liveMedia/faq.html#separate-rtp-streams
>>
>>
>> Ross Finlayson
>> Live Networks, Inc.
>> http://www.live555.com/
>>
>>
>> _______________________________________________
>> live-devel mailing list
>> live-devel at lists.live555.com
>> http://lists.live555.com/mailman/listinfo/live-devel
>>
>
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