[Live-devel] How framerate is passing to rtsp client

[Paweł Domagalski]

Thanks for quick response.
Yes, there should be 110000. I have tested a few values and I left last 
one by mistake. I am using camera so next frame never arrives earlier, 
so this value doesn't matter.

I changed my code by adding  non valid  values

     fPresentationTime.tv_sec = 1;
     fPresentationTime.tv_usec = 1;
     fDurationInMicroseconds = 1;

and rtsp client test have displayed valid values:

Stream "rtsp://192.168.1.82:8554/testStream/"; video/H264: Received 
11132 bytes.   Presentation time: 567993652.434189
Stream "rtsp://192.168.1.82:8554/testStream/"; video/H264: Received 
12241 bytes.   Presentation time: 567993652.474189
Stream "rtsp://192.168.1.82:8554/testStream/"; video/H264: Received 
12237 bytes.   Presentation time: 567993652.514189
Stream "rtsp://192.168.1.82:8554/testStream/"; video/H264: Received 
12093 bytes.   Presentation time: 567993652.554189
Stream "rtsp://192.168.1.82:8554/testStream/"; video/H264: Received 
11752 bytes.   Presentation time: 567993652.594177

I am curious what time is printed above. Is it packet delivery time from 
my PC ? I expected something like this:

Stream "rtsp://192.168.1.82:8554/testStream/"; video/H264: Received 
11132 bytes.   Presentation time: 1.1
Stream "rtsp://192.168.1.82:8554/testStream/"; video/H264: Received 
11132 bytes.   Presentation time: 1.1

Seems like fPresentationTime is not used to build rtp response. I 
suspected that every rtp packet should be timestamped.

BR
Paweł

On 31/03/16 16:31, Ross Finlayson wrote:
>> I am using testOnDemandRTSPServer example code from live555. I have wrote my implementation of DeviceSource class. I have set presentation time properly:
>>
>> gettimeofday(&fPresentationTime, NULL);
>> fDurationInMicroseconds = 1100000;
> That’s your problem.  You’re telling the server to wait 1100000 microseconds - i.e., 1.1 seconds - between sending each NAL unit.  I think you mean 110000 (or perhaps, to be more accurate: 111222).
>
> Ross Finlayson
> Live Networks, Inc.
> http://www.live555.com/
>
>
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> live-devel mailing list
> live-devel at lists.live555.com
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-- 
Paweł Domagalski
Software Engineer
Mobica Ltd.
www.mobica.com

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