Forum Post: Problem with dm8168 enc_link reject all the input video frames

Hi all:

I develop on dm8168 with dvrrdk 4.00 version,

and i create my link

captrue link---->scale link --->nsf link------>ipcoutm3----->ipcInms----->enc link---->....A8

 i found the enc link reject all input frames, no video encode is done,

as i connect nsf link with sw link and display link through on-chip HDMI, it shows OK

The signal is progrssive 1080P 25fps video signal,

  pCaptureInstPrm->inDataFormat       = SYSTEM_DF_YUV422P;

 pCaptureOutPrm->dataFormat          = SYSTEM_DF_YUV422I_YUYV;

when i remove scale link, enc link works well,

and i follow the encLink_common.c code, i found

/* frame skipped due to framework */
            if(pChObj->nextFid != pFrame->fid && pFrame->fid != FVID2_FID_FRAME)
                pChObj->inFrameRejectCount++;

pChObj->nextFid = 1,pFrame->fid=0 always,so enc skip, Is this caused by capture output data format,

how to resolve  this problem?

best regards

xavier