Different video size for streaming and recording

Thu Sep 27 23:26:00 PDT 2012

Well, individually the plugins work but they do not work together while
streaming RTSP.
test-launch.c uses "Gst RTSP server" and its structures and APIs for
streaming.

Secondly, no the file size is not zero. It changes as per the recording.
Only when I try to view it in vlc or any other player, it shows 00.00 in
total time and nothing can be played.

On 27 September 2012 18:55, Matt Pekar <mpekar at raineyelectronics.com> wrote:

> 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
>>>>> gstreamer-devel at lists.freedesktop.org
>>>>> 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*
>>
>>
>

-- 

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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