Splitting recording of Mpeg4 Live stream

[Nezer Zaidenberg]

Hi Nicola,

Thanks for the response.
1) Yes, yes I actually signal the pushing thread to stop and then the
pushing thread sends an eos after it gets to a key frame.

2) I wait for a keyframe, then I stop. I also tried to duplicate the key
frame and push it to both recordings - still no luck.
3) I will check the timestamps, but just to make sure I also made the
following test:
I tee'd both recordings to a udpsink, and had an external pipeline that
records from that udpsink to ex.mkv. Afterwards I saw that 1.mkv and 2.mkv
are not perfect (second 32.8 on the clock -> 36.2), but the ex.mkv file is
(goes seamlessly from 32 to 36).
4) I considered using multifdsink, but that will give me the same problem
when I want to connect everything into one movie unless I save all the
history + recordings.

Thanks,
   Tomer


On Mon, Dec 5, 2011 at 12:33 PM, Mailing List SVR
<lists at svrinformatica.it>wrote:

>  Il 05/12/2011 10:55, Nezer Zaidenberg ha scritto:
>
>  Hi,
>
>  I have an mpeg4 stream which I am trying to cut into parts.
> My pipeline is
> rtspsrc ! rtpmp4vdepay ! ffdec_mpeg4 ! mpeg4videoparse ! appsink -> appsrc
> ! matroskamux ! filesink location=...
>
>  Every 10 seconds I close the appsrc pipeline (with eos) and start a new
> one.
>
>   I have a software queue between appsink and appsrc to make sure that no
> packets are lost, and I make sure that when flushing I wait for the next
> frame to be a keyframe so that there is no data loss.
>
>
> do you stop to push frames to appsrc and then send the eos?
>
>
>
>  I am still seeing cuts between the videos (~2 second cuts)...
>
>
> do you keep the keyframe in your software queue and push it to the appsrc
> pipe started after the first one receive eos?
>
> try to print the frame timestamps pushed and the ones really present in
> the produced files
>
>
>
>  Is it possible to cut the stream in another way?
>
>
> you could try multifdsink too, but the flow you described should work
>
> Nicola
>
>   Is there a way to fix my pipeline?
>
>  Thanks,
>    Tomer
>
>
>
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