raw h264 to rtp

[Carl Petersen]

 

Im using a pipeline similar to this

 

gst-launch-1.0 -v filesrc location=rawh264.264 ! h264parse ! rtph264pay ! udpsink host=XX.XX.XX.XX

 

The problem is I can’t get the timestamps on the rtp packets to be reliable nor can I get the rtp to be sent at the correct interval. Normally 15,24 or 30 frames per second.

 

My understanding is the raw h264 has no timing information. I know the framerate etc and could specify it but whatever I try on  the launch command doesnt appear to change anything.

 

The timestamps are all the same and don’t increment. The pts on the data buffers says “none”. The duration is “none”. The raw h264 can be played with other tools if the framerate is specified in those other tools. So what I need is; if I specify 15 fps , the pipeline puts out 15 fps and the timestamps are incremented accordingly based on 90000 rtp clock rate. Ive had no luck with this.

 

Thanks

 

 

 

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[Nicolas Dufresne-3]

Le mardi 15 septembre 2015 à 18:10 -0500, Carl Petersen a écrit :

> Im using a pipeline similar to this
>  
> gst-launch-1.0 -v filesrc location=rawh264.264 ! h264parse !
> rtph264pay ! udpsink host=XX.XX.XX.XX
>  
> The problem is I can’t get the timestamps on the rtp packets to be
> reliable nor can I get the rtp to be sent at the correct interval.
> Normally 15,24 or 30 frames per second.
>  
> My understanding is the raw h264 has no timing information. I know
> the framerate etc and could specify it but whatever I try on  the
> launch command doesnt appear to change anything.
>  
> The timestamps are all the same and don’t increment. The pts on the
> data buffers says “none”. The duration is “none”. The raw h264 can be
> played with other tools if the framerate is specified in those other
> tools. So what I need is; if I specify 15 fps , the pipeline puts out
> 15 fps and the timestamps are incremented accordingly based on 90000
> rtp clock rate. Ive had no luck with this.

You can create an application, and set the timestamp using a pad probe.
The other way around, it to not store ES streams without a container so
you can preserve the timestamp information.

Nicolas
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[alaash]

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