[Live-devel] OpenRtsp recording question

Giacomo Parmigiani gparmigiani at logital.it
Tue May 19 10:01:28 PDT 2015


thank you. the problem was simply with Vlc playback.
with other players we don't have any issues (mediaPLayer classic or
ffplay).
i can mark this as closed.

thank you ,

giacomo

2015-05-18 20:56 GMT+02:00 Marcin <marcin at speed666.info>:

>  For me the problem is that you need to start recording on an I-Frame
> first. I deal with that by skipping NAL units that doesnt start with a
> keyframe. Otherwise you get trash at the beggining.
> Marcin
>
> W dniu 2015-05-18 o 12:28, Giacomo Parmigiani pisze:
>
>    Hello,
>
>  we have an ip-camera streaming via rtsp (h264/AVC) at 5 fps in hd
> resolution,
>  we're trying to record .mp4 file with openrtsp. Recorded stream looks
> like beeing freezed at the first received frame, though Vlc and ffplay can
> playback with no issues the stream (in vlc by the way it was necessary to
> provide a bigger inbound cache from the original 333 ms).
> the recording works flawlessly with cameras with higher framerates, but we
> have problems when facing low framerate. What could be the problem?
>
>
> here's our openRtsp calling arguments (to record every minute with .mp4
> format):
>
> -4 -F rec -n -P 60 -f 5 -b 250000 -D 10 rtsp://192.168.30.160
>
>
>
>  i tryed increasing the network buffer cache but doesn't seem to target
> our problem.
>  i tryed  -B 250000 along with previous options, with no success.
>
>
>  Hope you can help us,
>  Thank you so much,
>
>
>
>  Giacomo Parmigiani
>
> LOGITAL  srl
>
> via Palazzetti 5/F
>
> 40138 San Lazzaro di Savena (BO)
>
> ITALY
>
> Tel. +39 051 19983700 <%2B39%20051%2019983700>
>
>
>
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