h264parse causes decode errors "Got unexpected packet after EOF"

[omer.tal]

Hey guys,

So in the last few days I've been working on streaming H264 over RTP.
I've noticed that when I'm using h264parse before avdec_h264 I'm getting
many errors saying:



I used to think that I must use h264parse before decoding, and now I realize
that I was probably wrong and also that I have know clue what is the purpose
of h264parse.

Can someone explain to me please, why is h264parse causes all these errors,
and when should I use it?

Thanks.



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[Nicolas Dufresne-5]

Le jeudi 17 décembre 2020 à 08:59 -0600, omer.tal a écrit :

> Hey guys,
>
> So in the last few days I've been working on streaming H264 over RTP.
> I've noticed that when I'm using h264parse before avdec_h264 I'm getting
> many errors saying:
>
>
>
> I used to think that I must use h264parse before decoding, and now I realize
> that I was probably wrong and also that I have know clue what is the purpose
> of h264parse.
>
> Can someone explain to me please, why is h264parse causes all these errors,
> and when should I use it?

Using h264parse before the decoder is the right thing to do. The parser seems to
detect an invalid stream. Perhaps your source is buggy ?Perhaps it's a false
positive ? Share sufficient bits of that stream if you'd like to get us into
looking deeper.

>
> Thanks.
>
>
>
> --
> Sent from: http://gstreamer-devel.966125.n4.nabble.com/
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> gstreamer-devel mailing list
> [hidden email]
> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

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[omer.tal]

The source is basically an appsrc that sends RGB images at a rate of 30 fps.
Before the encoder I convert it to I420.
Then rtph264pay and udpsink.

Maybe it's a question of the format I'm using? Because I don't recall I had
these errors when I used a different format.



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[omer.tal]

So I made some more tests.. It seems that I don't get these errors if I use:

xvimagesink sync=false

h264parse is back in the pipeline.

Why is that?



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