• State
  • Locked Locked
  • Replies 12 replies
  • Subscribers 105 subscribers
  • Views 2048 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

DM816x EVM Interlaced video field order

Tate Schaar
Prodigy 95 points

Hi there!

I'm running into an issue with the DM816x EVM while trying to decode 1080i60 video.  It appears that the top and bottom fields are reversed on the decoded output (looks fuzzy and jittery).

I put the VPSS into 1080i60 mode:

echo 0 > /sys/devices/platform/vpss/display0/enabled

echo 1080i-60 > /sys/devices/platform/vpss/display0/mode

echo 1 > /sys/devices/platform/vpss/display0/enabled

... and ran a gstreamer pipeline (the content is h.264 TS)


gst-launch -v filesrc location=/usr/share/ti/data/videos/1920x1080_PMG.mpg ! mpegtsdemux ! h264parse output-format=1 access-unit=true ! omx_h264dec ! omx_scaler ! omx_ctrl display-mode=OMX_DC_MODE_1080I_60 ! gstperf ! omx_videosink display-mode=OMX_DC_MODE_1080I_60

and while the video does play successfully, the output looks like the fields are misaligned.

Anyone have any ideas?

Thanks in advance!

Tate

  • 0
    TI__Mastermind 20245 points

    Hi,

    Mostly it is problem with display. 1080i-60 display had a problem with HDVPSS and PSP releases. This will be solved in next release. Can you modify your chain to display 1080i-60 as 1080P30 combining both fields. This is to make sure that issue is with display and not decoder.

    Regards,

    Hardik Shah

  • 0 in reply to HardikShah
    TI__Intellectual 755 points

    The latest gstreamer release now has de-interlacer element available. You should be able to use that to handle interlace content, if you want to avoid 1080I display.

    Thanks,

    Satish

  • 0 in reply to Satish Arora
    Prodigy 95 points

    Satish,

    Thanks for the response.  I did build and install gst-openmax-GST_DM81XX_00_04_00_00 and am running through omx_hdeiscaler and do have what appears to be a properly deinterlaced/progressive full frame output, however, the video appears to stall after only a few frames of output (i.e. freeze after a few frames).

    gst-launch -v filesrc location=/home/root/TESTH264.mpg ! mpegtsdemux ! h264parse output-format=1 access-unit=true ! omx_h264dec ! omx_hdeiscaler ! omx_ctrl display-mode=OMX_DC_MODE_1080P_60 ! omx_scaler ! omx_videosink display-mode=OMX_DC_MODE_1080P_60

    Any suggestions?

    Thanks in advance,

    Tate

  • 0 in reply to Tate Schaar
    Prodigy 95 points

    Nevermind.  Found my own answer...  Need to pipe BOTH outputs (src_00 & src_01) of the deinterlacer to something or it stalls.

    gst-launch -v filesrc location=/home/root/TESTH264.mpg ! mpegtsdemux ! h264parse output-format=1 access-unit=true ! omx_h264dec ! omx_hdeiscaler name=d d.src_00 ! omx_ctrl display-mode=OMX_DC_MODE_1080P_60 ! omx_videosink display-mode=OMX_DC_MODE_1080P_60 d.src_01 ! fakesink silent=true

    Output looks nice and clean.  Anyone have any more comments on the above?  (Does this all look kosher?)

    Tate

  • 0 in reply to Tate Schaar
    TI__Intellectual 790 points

    The above pipeline looks good. As you have observed, the deiscaler elements need 2 src ports to be connected to something, otherwise the OMX component stalls.

  • 0 in reply to HardikShah
    Expert 1015 points

    Hello Harinarayan Bhatta:

       When I Play a MPEG2 TS stream (HD video width 1920*1080) using the omx_mdeiscaler plugin,When Play over ,the gst-launch command can not exit normally,and the shell  dead there.I have to power off.The following is my infor:


    Command:

    gst-launch filesrc location=./1920*1080Mpeg2.ts ! mpegtsdemux ! video/mpeg ! mpegvideoparse ! omx_mpeg2dec ! omx_mdeiscaler name=d d.src_00 ! 'video/x-raw-yuv,width=480,height=300' ! omx_ctrl  display-mode=OMX_DC_MODE_1080P_60  display-device=LCD ! omx_videosink  sync=false display-device=LCD  top=20 left=20 d.src_01 ! fakesink silent=true -v

    Setting pipeline to PAUSED ...

    Pipeline is PREROLLING ...

    /GstPipeline:pipeline0/GstMpegTSDemux:mpegtsdemux0: pat-info = ((GValueArray*) 0

    x185650)

    /GstPipeline:pipeline0/GstMpegTSDemux:mpegtsdemux0: pmt-info = ((MpegTsPmtInfo*)

     0x165720)

    /GstPipeline:pipeline0/GstCapsFilter:capsfilter2: caps = video/mpeg

    /GstPipeline:pipeline0/GstCapsFilter:capsfilter2.GstPad:src: caps = video/mpeg,

    mpegversion=(int)2, systemstream=(boolean)false

    ----------------------------

    --------------------------------all above is ok

    --------------------------------now play over and release resources

    Pipeline is PREROLLED ...

    Setting pipeline to PLAYING ...

    New clock: GstSystemClock

    Recieved EOS event, press <CTRL+C> to terminate pipeline.

    Recieved EOS event, press <CTRL+C> to terminate pipeline.

    Got EOS from element "pipeline0".

    Execution ended after 197382096100 ns.

    Setting pipeline to PAUSED ...

    Setting pipeline to READY ...

    /GstPipeline:pipeline0/GstFakeSink:fakesink0.GstPad:sink: caps = NULL

    /GstPipeline:pipeline0/GstOmxVideoSink:omxvideosink0.GstPad:sink: caps = NULL

    /GstPipeline:pipeline0/GstOmxBaseCtrl:omxbasectrl0.GstPad:src: caps = NULL

    /GstPipeline:pipeline0/GstOmxBaseCtrl:omxbasectrl0.GstPad:sink: caps = NULL

    /GstPipeline:pipeline0/GstCapsFilter:capsfilter1.GstPad:src: caps = NULL

    /GstPipeline:pipeline0/GstCapsFilter:capsfilter1.GstPad:sink: caps = NULL

     

    /GstPipeline:pipeline0/GstOmxMDeiScaler:d.GstPad:src_01: caps = NULL

    /GstPipeline:pipeline0/GstOmxMDeiScaler:d.GstPad:src_00: caps = NULL

     

    /GstPipeline:pipeline0/GstOmxMDeiScaler:d.GstPad:sink: caps = NULLsink.

    unrecoverable error: The cause of the error could not be determined (0x80001001-----------------------stop here,and shell dead.

     

        As the above showed,the shell stop at:

    /GstPipeline:pipeline0/GstOmxMDeiScaler:d.GstPad:sink: caps = NULLsink.

    unrecoverable error: The cause of the error could not be determined (0x80001001-----------------------stop here,and shell dead.

    And  I try to  press <CTRL+C> to terminate pipeline，But no valid.,the shell can not response. I must powe off.

     Have you encountered this? Thanks very much.

  • 0 in reply to HardikShah
    Prodigy 210 points

    Hardik/All TI guys,

    With the latest release of EZSDK/PSP I am still seeing the fields out of order on 1080i video (likely output of all interlaced video).  You had mentioned that it would be fixed in the next HDVPSS/PSP release, but it doesn't seem to have been addressed as far as I can see.

    Is there perhaps a patch available (or can be made available) to fix this?

    Please advise,

    Tate

  • 0 in reply to Tate Schaar1
    Prodigy 160 points

    Hi Hardik,

                  We are also seeing the same issue with 1080i60 display (Field order is reversed) in EZSDK 5.05.02.00.  Changing 1080i60 display to 1080P30 is not an option for us since our output has to be interlaced.  Could you provide any other fix for this?

    Thanks,

    Senthil  

  • 0 in reply to Senthilnathan Maadasamy
    Prodigy 210 points

    Senthil,

    The problem is actually more complicated than field order.  We have found that the SAV and EAV codes are incorrect such that the F and V bits are not transitioning on the correct lines.  The issue is in the VPSS code.  Resolving this cost us quite a bit of time and expense, but I will say it can be fixed, providing you have the proper test equipment to analyze the SAV and EAV codes.

    Tate

  • 0 in reply to Tate Schaar1
    TI__Guru**** 477675 points

    Hi Tate,

     

    I did not get how this is vpss code issue? We had also seen earlier that in the input itself, FVH bits were not toggling correct causing field reversal issue. Have you done any changes in vpss code for resolving this issue?

     

    Regards,

    Brijesh

  • 0 in reply to Brijesh Jadav
    Expert 1745 points

    On the DM814x, our field reversal problem went away when we modified the EZSDK 5.05.02.00 VPSS overlay code to subtract one from dCfg->activeLineStart1 in the hdVencSetModeTiming(), in vpshal_hdvenc.c ...

  • 0 in reply to Daniel70334
    Genius 3700 points

    Hi,

       About the problem, we improved the VPSS firmware to display the image correctly (the wrong order was obtained in the graphics and video layers), something important to mention is that getting the correct image didn't mean that the video was compliant with the standard, further work was needed to make it compliant with it.

    http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/p/328536/1145231.aspx#1145231

    -David