Different video size for streaming and recording

[Matt Pekar]

Off the top of my head I don't see anything wrong with that pipeline.  Is
the file coming out zero length or does it have some content?

The only advice I can give with my limited "tee" experience is to break the
parts down and test them individually before tee'ing them.  You know the
stream works, did you test the file stream individually also?

v4l2src always-copy=FALSE input-src=composite chain-ipipe=true !
video/x-raw-yuv,format=(fourcc)NV12, width=640, height=480 ! queue !
dmaiaccel ! dmaienc_h264 encodingpreset=2 ratecontrol=2
intraframeinterval=23 idrinterval=46 targetbitrate=3000000 ! qtmux!
filesink location=test1.mp4 sync=false enable-last-buffer=false

If both streams work individually, then it probably comes down to a sync
issue, which is why I ask if the file is zero length.  Also is there
anything in the test-launch.c app that may be interfering with things?

On Thu, Sep 27, 2012 at 12:34 AM, Mazahir Poonawalla <
mazahir.poonawalla at ideaforge.co.in> wrote:

> Thanks Matt,
>
> What if I want to do the same thing with an RTSP stream? I am using the
> test-launch.c app and passing my plugin as argument i.e.:
>
> ./TEST "( v4l2src always-copy=FALSE input-src=composite chain-ipipe=true !
> video/x-raw-yuv,format=(fourcc)NV12, width=640, height=480 ! queue !
> dmaiaccel ! dmaienc_h264 encodingpreset=2 ratecontrol=2
> intraframeinterval=23 idrinterval=46 targetbitrate=3000000 ! rtph264pay
> name=pay0 pt=96 )"
>
> So the above plugin is for RTSP stream which can be viewed using vlc on on
> another machine. This works fine.
> Now, neither I can tee with this plugin and record nor I can rescale.
> There is some video file being generated but it cannot be opened. The
> plugin I use to stream (RTSP) and record is as given below, but this does
> not work:
>
> ./TEST "( v4l2src always-copy=FALSE input-src=composite chain-ipipe=true !
> video/x-raw-yuv,format=(fourcc)NV12, width=640, height=480 ! queue !
> dmaiaccel ! dmaienc_h264 encodingpreset=2 ratecontrol=2
> intraframeinterval=23 idrinterval=46 targetbitrate=3000000 ! tee name=x !
> queue ! rtph264pay name=pay0 pt=96 x. ! queue ! qtmux! filesink
> location=test1.mp4 sync=false enable-last-buffer=false )"
>
> Any help as to how would I go about recording and rescaling with this
> plugin.  The test-launch uses Gst RTSP server internally.
>
> Thanks,
> Maz
>
> On 26 September 2012 19:05, Matt Pekar <mpekar at raineyelectronics.com>wrote:
>
>> For this case I think you'd need to encode it twice, once at 640x480 and
>> again at 320x240.  So you'd have to move your tee up the pipeline:
>>
>> gst-launch v4l2src ! tee name=t. ! <encode at 640x480> ! <udpsink> t. !
>> <encode at 320x240> ! <filesink>
>>
>>  I have no clue if the DM365 can do that or not.
>>
>>
>> On Wed, Sep 26, 2012 at 4:51 AM, Mazahir Poonawalla <
>> mazahir.poonawalla at ideaforge.co.in> wrote:
>>
>>> Hi Matt,
>>>
>>> Thanks for the help, but this does not work.
>>> My pipeline is as follows:
>>>
>>> gst-launch -v -e v4l2src always-copy=FALSE input-src=composite
>>> chain-ipipe=true ! video/x-raw-yuv,format=\(fourcc\)NV12, width=640,
>>> height=480 ! queue ! dmaiaccel ! dmaienc_h264 encodingpreset=2
>>> ratecontrol=2 intraframeinterval=23 idrinterval=46 targetbitrate=3000000 !
>>> tee name=x ! queue ! rtph264pay ! udpsink port=3000 host=192.168.1.102
>>> sync=false enable-last-buffer=false x. ! queue ! qtmux! filesink
>>> location=test1.mp4 sync=false enable-last-buffer=false
>>>
>>> So basically one thread is for streaming and other for recording on a
>>> file. The default composite input video is 640*480. What if I want to
>>> record the same size and stream at 320*240. Is it possible? I am running
>>> this on Leopardboard DM365.
>>>
>>> Thanks,
>>> Maz
>>>
>>> On 24 September 2012 18:41, Matt Pekar <mpekar at raineyelectronics.com>wrote:
>>>
>>>> You'll want to use the videoscale element along with a caps element:
>>>>
>>>> gst-launch videotestsrc is-live=TRUE num-buffers=90 ! tee name=t !
>>>> queue2 ! videoscale ! ffmpegcolorspace !
>>>> video/x-raw-rgb,width=640,height=480 ! ximagesink sync=false t. ! queue2 !
>>>> videoscale ! ffmpegcolorspace ! video/x-raw-yuv,width=320,height=240 !
>>>> theoraenc ! matroskamux ! filesink location=/tmp/test.mkv
>>>>
>>>> Make sure to add queue elements on your tee so threads don't block.
>>>>
>>>>
>>>> http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-plugins/html/gst-plugins-base-plugins-videoscale.html
>>>>
>>>>
>>>> On Mon, Sep 24, 2012 at 1:40 AM, Mazahir Poonawalla <
>>>> mazahir.poonawalla at ideaforge.co.in> wrote:
>>>>
>>>>> Hi All,
>>>>>
>>>>> I am using a plugin along with a "tee" element to stream live capture
>>>>> as well as record the video. I would like to know how should I specify two
>>>>> different video frame sizes for the two tasks (i.e. streaming and
>>>>> recording). Lets say for example, the incoming video is 720p which I would
>>>>> want to record at that size, but I would want to stream it at only 640*480.
>>>>>
>>>>> Any help?
>>>>>
>>>>> Thank you & Regards,
>>>>>
>>>>> **
>>>>>
>>>>> *Maz*
>>>>>
>>>>> _______________________________________________
>>>>> gstreamer-devel mailing list
>>>>> gstreamer-devel at lists.freedesktop.org
>>>>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>>>>
>>>>>
>>>>
>>>> _______________________________________________
>>>> gstreamer-devel mailing list
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>>>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>>>
>>>>
>>>
>>>
>>> --
>>>
>>> Thank you & Regards,****
>>>
>>> *Mazahir Poonawalla*****
>>>
>>> ideaForge Technology Pvt. Ltd. | Board: +91 22 2767 0001; +91 22 2767
>>> 0707 | mazahir.poonawalla at ideaforge.co.in |www.ideaforge.co.in****
>>>
>>> *P** **Please consider the environment before printing this e-mail*
>>>
>>>
>>
>
>
> --
>
> Thank you & Regards,****
>
> *Mazahir Poonawalla*****
>
> ideaForge Technology Pvt. Ltd. | Board: +91 22 2767 0001; +91 22 2767 0707
>  | mazahir.poonawalla at ideaforge.co.in |www.ideaforge.co.in****
>
> *P** **Please consider the environment before printing this e-mail*
>
>
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