Such an easy question

[Nirbheek Chauhan]

Hi James,

It looks like you forgot to add a space after `false` and before the
`!`, which is why setting the property failed, as the error message
tells you.

Cheers,
Nirbheek

On Sat, Jul 24, 2021 at 11:30 AM James Linder via gstreamer-devel
<gstreamer-devel at lists.freedesktop.org> wrote:
>
>
>
> > On 23 Jul 2021, at 9:08 pm, Nirbheek Chauhan <nirbheek.chauhan at gmail.com> wrote:
> >
> > Hi James,
> >
> > I tested this pipeline on my system with a Logitech C920, and I was
> > able to record 40 seconds of audio + video without issues. Note that
> > you need to use "gst-launch-1.0 -e" to ensure that EOS is sent on
> > Ctrl+C. This is the full command-line I used:
> >
> > gst-launch-1.0 -e v4l2src device=/dev/video2 ! queue !
> > video/x-h264,width=1920,height=1080,framerate=30/1 ! h264parse ! queue
> > ! mux. pulsesrc ! audioconvert ! queue ! avenc_aac ! queue ! mux.
> > mpegtsmux name=mux ! filesink location='output.ts'
> >
> > The audio dropouts might be an issue with the selected clock, so maybe
> > try "pulsesrc provide-clock=false" which will use the system clock.
> > Another possibility is that your webcam is not actually outputting
> > frames fast enough. This often happens in low light conditions.
> >
> > You might also like to see the "min-upstream-latency" and "latency"
> > properties on mpegtsmux, in case your devices have a startup delay.
> >
> > Cheers,
> > Nirbheek
> >
> > On Fri, Jul 23, 2021 at 12:15 PM James Linder via gstreamer-devel
> > <gstreamer-devel at lists.freedesktop.org> wrote:
> >>
> >> My question is so simple that I cannot believe there is no answer
> >>
> >> I have a camera providing 1080 at 30Hz in h254
> >> I want to record the output together with pulse audio.
> >>
> >> Google is fulll of tales of woe: eg
> >>
> >> http://gstreamer-devel.966125.n4.nabble.com/How-do-you-record-audio-and-video-off-a-webcam-td4687419.html
> >>
> >> Trying his ‘it works’ scenario found it does not work is even worse than mp4:
> >>
> >>
> >> Mine: audio cuts out in 15 sec
> >>
> >> gst-launch-1.0 $@ v4l2src device=/dev/video2 ! queue ! video/x-h264,width=1920,height=1080,framerate=30/1 ! h264parse ! queue max-size-buffers=0 max-size-bytes=0 max-size-time=1000000000 ! mux. pulsesrc device=0 ! audioconvert ! queue ! avenc_aac ! queue ! mux. mpegtsmux name=mux ! filesink location='output.mp4'
> >>
> >> His: audio cust out in 1 sec
> >>
> >> gst-launch-1.0 $@ v4l2src device=/dev/video2 ! queue ! video/x-h264,width=1920,height=1080,framerate=30/1 ! h264parse ! queue max-size-buffers=0 max-size-bytes=0 max-size-time=1000000000 ! \
> >> mux.  pulsesrc device=alsa_input.usb-Sensoray_Co.__Inc._Sensoray_Model_2263_551645-04.analog-stereo ! audioconvert ! vorbisenc ! matroskamux name=mux ! filesink location=‘output.mkv'
> >>
> >> Can anyone help?
>
> I guess it is time to walk away, licking my wounds.
> Thanks for the help.
> I posted my results here: http://tigger.ws/downloads/output.ts
>
> What may be intersting/relevant:
> I am using an i3 nuc. HTOP shows 4 cores (actually 2 + 2 threads) at 2-5% busy.
> I can record audio or video endlessly without any issue, just not together.
> I cannot see a reference to provide-clock=false and indeed
>
> WARNING: erroneous pipeline: could not set property "provide-clock" in element "pulsesrc0" to "false!”
>
> Cheers
> James
>
>
>
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