encoding H264 BP or MP on DM368

Olivier Singla

On the DM368EVM, I am trying to encode video in H264 BP instead of HP. This is what I am doing:

   IH264VENC_Params h264params = {
     Venc1_Params_DEFAULT,
    66,    //profileIdc
    IH264VENC_LEVEL_50,    //levelIdc
      0,   //Log2MaxFrameNumMinus4
      0, //ConstraintSetFlag
      1, //entropyMode
      1, //transform8x8FlagIntraFrame
      0, //transform8x8FlagInterFrame
      0, //enableVUIparams
      0, //meAlgo
      1, //seqScalingFlag       // 1 as default
      0,   //encQuality
      0, //enableARM926Tcm
      0, //enableDDRbuff
      0, //sliceMode
      0, //numTemporalLayers
      0, //svcSyntaxEnable
      0, //EnableLongTermFrame
      IH264VENC_TI_ENTIREFRAME, //outputDataMode
      1, //sliceFormat
    };
h264params.videncParams.size = sizeof(IH264VENC_Params);

encode1.hVe1 = Venc1_create( encode1.hEngine, "h264enc", (VIDENC1_Params*)&h264params, &encode1.dynParams );

It's always failing with 66=baseline, 77=main, but it works just fine with 100=HighProfile.

Any idea why it's failing ?

Thanks.

over 13 years ago

0 Ritesh Rajore over 13 years ago

TI__Expert 3065 points

It is failing because of below two settings. Make them 0 and it should work in baseline profile.

1, //entropyMode
1, //seqScalingFlag // 1 as default

Please refer Appendix B Error Description for further details.

0 Olivier Singla over 13 years ago in reply to Ritesh Rajore

Intellectual 260 points

Hi Ritesh,

It's still failing with both entropyMode and seqScalingFlag set to 0.

How could I get a detailed description when it's failing?

Thanks!

Olivier

0 Veeranna Hanchinal over 13 years ago in reply to Olivier Singla

TI__Expert 8465 points

Transform8x8 is also not allowed in Base profile.

To know the which parameter is going wrong please debug codec library it will print more information parameters.

You can also refer http://e2e.ti.com/support/embedded/multimedia_software_codecs/f/356/t/115354.aspx#500511

Thanks,

Veeranna

0 Olivier Singla over 13 years ago in reply to Veeranna Hanchinal

Intellectual 260 points

Hi Veeranna,

I tried all this, bit it's still failing, and I am not exactly sure how to debug the issue to get useful information.

If I change profileIdc to 100, it then work just fine.

Could-it be a memory problem ?

I can encode fine in HP 1080P.

Thanks, Olivier

0 Olivier Singla over 13 years ago in reply to Olivier Singla

Intellectual 260 points

Got it, working now both in BP, MP and HP.

I had to do this:

    IH264VENC_Params h264params = IH264VENC_PARAMS;
   h264params.videncParams = Venc1_Params_DEFAULT;
   h264params.profileIdc = 77;                /*!< pofile IDC (66=baseline, 77=main, 88=extended, 100=HighProfile) */
   h264params.levelIdc = 41;                   /*!< level idc */
   h264params.Log2MaxFrameNumMinus4 = 0;        /*!< Set the maximum frame number value */
   h264params.ConstraintSetFlag = 0;            /*!< ConstraintSetFlags */
   h264params.entropyMode = 0;                   /*!< entropy mode flag 0-CAVLC, 1-CABAC */
   h264params.transform8x8FlagIntraFrame = 0;   /*!< Flag for 8x8 Transform in Inter frames*/
   h264params.transform8x8FlagInterFrame = 0;   /*!< Flag for 8x8 Transform in Intra Frames*/
   h264params.enableVUIparams = 0;               /*!< Enable VUI Parameters */
   h264params.meAlgo = 0;                       /*!< Reserved */
   h264params.seqScalingFlag = 0;                /*!< Sequence Scaling Matrix Present Flag */
                                                 /*!< = Disable, 1 = Auto, 2 = Low, 3 = Moderate, 4 = Reserved */
   h264params.encQuality = 0;                    /*!< 0 => version 1.1 backward compatible mode, 2 => Platinum mode,
                                                                   1 => Full feature, high Quality (It is depreciated due to performance reasons) */
   h264params.enableARM926Tcm = 0;             /*!< 0 -> do not use ARM926 TCM, 1 -> use ARM926 TCM */
   h264params.enableDDRbuff= 0;               /*!< 0 -> do not use DDR, 1 -> use DDR instead of IMCOP */
   h264params.sliceMode = 0;                   /*!< 0 -> no multiple slices, 1 -> multiple slices - bits/slice */
                                               /*!< 2 -> multiple slices-MBs/slice,3 -> multiple slices - Rows/slice*/
   h264params.numTemporalLayers= 0;            /* Number of temporal layers
                                                        0 -> one layer (Base layer)
                                                        1 -> two layers
                                                        2 -> three layers
                                                        3 -> four layers
                                                      255 -> Chain free P frames */
   h264params.svcSyntaxEnable = 0;             /* SVC and MMCO enable/disable
                                                   0 -> SVC disabled short term ref frames used
                                                   1 -> SVC enabled short term ref frames used
                                                   2 -> SVC disabled long term ref frames used
                                                   3 -> SVC enabled long term ref frames used*/
   h264params.EnableLongTermFrame = 0;           /* Flag to enable/disable long term reference frame */
   h264params.outputDataMode = IH264VENC_TI_ENTIREFRAME;   /* 0 -> low latency, encoded streams produced after N (configurable) slices encode,*/
                                              /* 1 -> encoded stream produce at the end of frame */
   h264params.sliceFormat = 1;                 /* 0 -> encoded stream in NAL unit format, */
                                               /* 1 -> encoded stream in bytes stream format */

   h264params.videncParams = encode1.params;
   h264params.videncParams.size = sizeof(IH264VENC_Params);
    encode1.hVe1 = Venc1_create( encode1.hEngine, "h264enc", (VIDENC1_Params*)&h264params, &encode1.dynParams );

Thanks for your help!
Olivier

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encoding H264 BP or MP on DM368