Inogeni 4K -> USB3.0 and Jetson TX2

[Pavel Mikhadzionak]

What difference between videoparse and rawvideoparse? I have gstreamer 1.8
and similar pipeline don't fix problem:
gst-launch-1.0 v4l2src device=/dev/video0 !
video/x-raw,width=3840,height=2160,format=NV12,framerate=30/1 ! videoparse
format=23 width=3840 height=2160 ! fakesink

2018-02-02 13:17 GMT+03:00 Nicolas Dufresne <nicolas at ndufresne.ca>:

>
>
> Le 2 févr. 2018 1:56 AM, "Matteo Valdina" <matteo.valdina at gmail.com> a
> écrit :
>
> Hi,
> Are you sure that the patch is the right one? It is for GREY not NV12 or
> I420.
>
>
> Oops.
>
> https://patchwork.kernel.org/patch/7979761/
>
>
> Anyway, I faced a similar issue. I used a rawvideoparse to force the
> stride to the right value.
>
> So your command should be something like:
>
> gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw,width=3840,height=2160,format=I420
> ! rawvideoparse format=2 width=3840 height=2160 ! fakesink
>
>
> Yes, you figured right. The UVC driver calculates the stride wrong. Be
> aware that UVC is not zero copy. With Inogeni the memcpy can be visible as
> 4k 30fps is quite high bandwidth.
>
>
>
>
> Best
> Matteo Valdina
>
> On Thu, Feb 1, 2018 at 5:25 PM, Nicolas Dufresne <nicolas at ndufresne.ca>
> wrote:
>
>>
>>
>> Le 1 févr. 2018 11:11, "pavelm" <pavel.mikhadzionak at gmail.com> a écrit :
>>
>> I tried to capture 4k video from Inogeni via gstreamer and it's not
>> working:
>>
>>     gst-launch-1.0 v4l2src device=/dev/video0 !
>> "video/x-raw,width=3840,height=2160,format=I420" ! fakesink
>>
>>
>> Do you have the UVC kernel fix for the stride in NV12 and I420 ?
>>
>> https://patchwork.linuxtv.org/patch/45357/
>>
>>
>> With GST_DEBUG="*:3" I see errors:
>>
>>     ubuntu at tegra-ubuntu:~$ gst-launch-1.0 v4l2src device=/dev/video0 !
>> "video/x-raw,width=3840,height=2160,format=I420" ! fakesink
>>     Setting pipeline to PAUSED ...
>>     Pipeline is live and does not need PREROLL ...
>>     Setting pipeline to PLAYING ...
>>     New clock: GstSystemClock
>>     0:00:00.276135808 18119       0x60f320 WARN          v4l2bufferpool
>> gstv4l2bufferpool.c:1196:gst_v4l2_buffer_pool_dqbuf:<v4l2src0:pool:src>
>> Driver should never set v4l2_buffer.field to ANY
>>     0:00:00.276210433 18119       0x60f320 WARN          v4l2bufferpool
>> gstv4l2bufferpool.c:1958:gst_v4l2_buffer_pool_process:<v4l2src0:pool:src>
>> Dropping corrupted buffer without payload
>>     0:00:00.276253730 18119       0x60f320 WARN          v4l2bufferpool
>> gstv4l2bufferpool.c:1958:gst_v4l2_buffer_pool_process:<v4l2src0:pool:src>
>> Dropping corrupted buffer without payload
>>     0:00:00.328871196 18119       0x60f320 ERROR                default
>> video-frame.c:161:gst_video_frame_map_id: failed to map video frame
>> plane 1
>>     0:00:00.328947998 18119       0x60f320 ERROR         v4l2bufferpool
>> gstv4l2bufferpool.c:161:gst_v4l2_buffer_pool_copy_buffer:<v4
>> l2src0:pool:src>
>> could not map buffer
>>     0:00:00.328976798 18119       0x60f320 ERROR         v4l2bufferpool
>> gstv4l2bufferpool.c:1953:gst_v4l2_buffer_pool_process:<v4l2src0:pool:src>
>> failed to copy buffer
>>     0:00:00.329004031 18119       0x60f320 WARN                 basesrc
>> gstbasesrc.c:2939:gst_base_src_loop:<v4l2src0> error: Internal data
>> stream
>> error.
>>     0:00:00.329015263 18119       0x60f320 WARN                 basesrc
>> gstbasesrc.c:2939:gst_base_src_loop:<v4l2src0> error: streaming stopped,
>> reason error (-5)
>>     ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
>> Internal
>> data stream error.
>>     Additional debug info:
>>     gstbasesrc.c(2939): gst_base_src_loop ():
>> /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
>>     streaming stopped, reason error (-5)
>>     Execution ended after 0:00:00.186888513
>>     Setting pipeline to PAUSED ...
>>     Setting pipeline to READY ...
>>     Setting pipeline to NULL ...
>>     Freeing pipeline ...
>>
>>
>>
>>
>>
>> --
>> Sent from: http://gstreamer-devel.966125.n4.nabble.com/
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>
>
> --
> “There are two ways of constructing a software design: One way is to make
> it so simple that there are obviously no deficiencies, and the other way is
> to make it so complicated that there are no obvious deficiencies. The first
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> - Tony Hoare
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