Jpeg encoding

[song_l_]

Hi.

I've encountered two problem in encoding jpeg with intel media sdk.

1. The MFXVideoENCODE_Init function always returns MFX_WRN_PARTIAL_ACCELERATION. Even using the sample_encode.exe,  the result is the same. Is that mean QuickSync does not support jpeg encoding? (using h264 is OK)

2. The time  between MFXVideoENCODE_EncodeFrameAsync and MFXVideoCORE_SyncOperation is 16ms. It seems much longer than I expected.

The parameter to init encoder is:

    mfxVideoParam m_mfxEncParams;
    memset(&m_mfxEncParams, 0, sizeof(mfxVideoParam));

    m_mfxEncParams.mfx.CodecId = MFX_CODEC_JPEG;
    m_mfxEncParams.mfx.EncodedOrder = 0; // binary flag, 0 signals encoder to take frames in display order
    m_mfxEncParams.IOPattern = MFX_IOPATTERN_IN_SYSTEM_MEMORY;

    // frame info parameters
    m_mfxEncParams.mfx.FrameInfo.FourCC = MFX_FOURCC_YV12;
    m_mfxEncParams.mfx.FrameInfo.ChromaFormat = MFX_CHROMAFORMAT_YUV420;
    m_mfxEncParams.mfx.FrameInfo.PicStruct = MFX_PICSTRUCT_PROGRESSIVE;

    // set frame size and crops
    m_mfxEncParams.mfx.FrameInfo.Width = MSDK_ALIGN16(WIDTH);
    m_mfxEncParams.mfx.FrameInfo.Height = (MFX_PICSTRUCT_PROGRESSIVE == m_mfxEncParams.mfx.FrameInfo.PicStruct) ?
        MSDK_ALIGN16(HEIGHT) : MSDK_ALIGN32(HEIGHT);

    m_mfxEncParams.mfx.FrameInfo.CropX = 0;
    m_mfxEncParams.mfx.FrameInfo.CropY = 0;
    m_mfxEncParams.mfx.FrameInfo.CropW = WIDTH;
    m_mfxEncParams.mfx.FrameInfo.CropH = HEIGHT;

    m_mfxEncParams.mfx.FrameInfo.FrameRateExtD = 1;
    m_mfxEncParams.mfx.FrameInfo.FrameRateExtN = 0x1e;


    // JPEG encoder settings overlap with other encoders settings in mfxInfoMFX structure
    m_mfxEncParams.mfx.Interleaved = 1;
    m_mfxEncParams.mfx.Quality = 75;
    m_mfxEncParams.mfx.RestartInterval = 0;

    m_mfxEncParams.AsyncDepth = 4;

 The output of Analysis is:

Intel(r) Media Server Studio 2015 R6 - System Analyzer (64-bit)

The following versions of Media SDK API are supported by platform/driver
[opportunistic detection of MSDK API > 1.16]:

        Version Target  Supported       Dec     Enc
        1.0     HW      Yes             X       X
        1.0     SW      Yes             X       X
        1.1     HW      Yes             X       X
        1.1     SW      Yes             X       X
        1.2     HW      Yes             X       X
        1.2     SW      Yes             X       X
        1.3     HW      Yes             X       X
        1.3     SW      Yes             X       X
        1.4     HW      Yes             X       X
        1.4     SW      Yes             X       X
        1.5     HW      Yes             X       X
        1.5     SW      Yes             X       X
        1.6     HW      Yes             X       X
        1.6     SW      Yes             X       X
        1.7     HW      Yes             X       X
        1.7     SW      Yes             X       X
        1.8     HW      Yes             X       X
        1.8     SW      Yes             X       X
        1.9     HW      Yes             X       X
        1.9     SW      Yes             X       X
        1.10    HW      Yes             X       X
        1.10    SW      Yes             X       X
        1.11    HW      Yes             X       X
        1.11    SW      Yes             X       X
        1.12    HW      Yes             X       X
        1.12    SW      Yes             X       X
        1.13    HW      Yes             X       X
        1.13    SW      Yes             X       X
        1.14    HW      Yes             X       X
        1.14    SW      Yes             X       X
        1.15    HW      Yes             X       X
        1.15    SW      Yes             X       X
        1.16    HW      Yes             X       X
        1.16    SW      Yes             X       X
        1.17    SW      Yes             X       X

Graphics Devices:
        Name                                         Version             State
        Intel(R) HD Graphics 4600                    10.18.15.4256       Active
        NVIDIA GeForce GTX 860M                      10.18.13.5390       08

System info:
        CPU:    Intel(R) Core(TM) i7-4710HQ CPU @ 2.50GHz
        OS:     Microsoft Windows 10 ???
        Arch:   64 ?

Installed Media SDK packages (be patient...processing takes some time):
        Intel(R) Media Samples 6.0.0.68
        Intel(R) Media SDK 2016

Analysis complete... [press ENTER]

[Harshdeep_B_Intel · Accepted solution]

Hi There, 

Thanks for detailed description and log from the system analyzer tool. This helps us provide your complete system information. Currently you are using Intel(R) HD Graphics 4600, this is a 4th generation processor, on which JPEG  HW implementation for encoding is a Hybrid solution. It is not a full HW implementation. Hence when you run your application or sample_encode you can see  MFX_WRN_PARTIAL_ACCELERATION.

As, this is a Hybrid implementation(partial HW), slow performance is expected. Currently from 6th generation processor, includes full HW support for JPEG encode. To achieve better performance, I suggest upgrading your hardware to latest 6th generation processor. 

Thanks, 

[song_l_]

Thank you.

[Harshdeep_B_Intel]

So, we will close this thread. Please free to start a new thread for further questions. 

Thanks,