Latest post Mon, Mar 6 2017 11:11 AM by sop_torrespananews@rtve.es. 5 replies.
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  • Fri, Mar 3 2017 8:40 AM

    AMT_2.13.3.10981 First Step Problems

    Hi,

     

    I am trying to create a compressed H264_625_0A AMT from a IMX50_PAL_0A file. 

     

    In order to create the IMX50_PAL_0A file I have taken a OPAtom file from Avid ISIS and executed the command:

     

    >amt_dll_sample_app MXF_TO_AMT WASV01ADF3EC56.mxf IMX50_PAL_0A.XML TEST01

     

    This command creates the TEST01 folder and .XML, .AAF, and mxf files correctly. 

     

    After that I have executed this command to create the AMT commpresed:

     

    >amt_dll_sample_app TRANSCODE TEST01 IMX50_PAL_0A.XML H264_625_0A.XML TEST02

     

    I have this message in te console prompt:

    C:\AMT_DNxHD_SDK\bin>amt_dll_sample_app TRANSCODE TEST01  IMX50_PAL_0A.XML H264_

    625_0A.XML TEST02

    ERROR: 'AMT_COULD_NOT_READ_MEDIA_PARAMETERS'

     

    If I copy the TEST01/TEST01.XML to TEST01/.XML and execute again the command:

     

    >amt_dll_sample_app TRANSCODE TEST01 IMX50_PAL_0A.XML H264_625_0A.XML TEST02

     

    Then I have got this message:

     

    C:\AMT_DNxHD_SDK\bin>amt_dll_sample_app TRANSCODE TEST01  IMX50_PAL_0A.XML H264_

    625_0A.XML TEST02

    The system could not find the specified file.

    ERROR: 'AMT_UNSUPPORTED_TRANSCODING_REQUEST'

     

    I also write down the AMT log response:

    2017-03-03T08:37:53,284UTC [DEBUG] [AMT] [] {P:2836 - T:520 } [sources\CORE\AMT_logger.cpp:140] Listing log4cplus loggers:

    2017-03-03T08:37:53,284UTC [DEBUG] [AMT] [] {P:2836 - T:520 } [sources\CORE\AMT_logger.cpp:144] Log [0] - 'AMT'

    2017-03-03T08:37:53,284UTC [INFO] [AMT] [] {P:2836 - T:520 } [sources\CORE\AMT_logger.cpp:177] -----------------------------------------------------------------

    2017-03-03T08:37:53,284UTC [INFO] [AMT] [] {P:2836 - T:520 } [sources\CORE\AMT_logger.cpp:178] AMT starting (v. 2.13.3.10981.5)

    2017-03-03T08:37:53,284UTC [INFO] [AMT] [] {P:2836 - T:520 } [sources\CORE\AMT_logger.cpp:183] AMT Running in Release mode.

    2017-03-03T08:37:53,297UTC [INFO] [AMT] [] {P:2836 - T:520 } [sources\CORE\AMT_class.cpp:368] AMT configured for passthrough video.

    2017-03-03T08:37:53,328UTC [INFO] [GH] [] {P:2836 - T:520 } [..\..\AA\AAFMediaStorageRead.cpp:1355] Set cache page size to 16777216 retrieved from registry.

    2017-03-03T08:37:53,328UTC [INFO] [GH] [] {P:2836 - T:520 } [..\..\AA\AAFMediaStorageRead.cpp:1397] Registry key HKEY_LOCAL_MACHINE\Software\Avid Technology\GenericHelper\MXF\MaxBufferCount not defined. Using default value.

    2017-03-03T08:37:53,328UTC [INFO] [GH] [] {P:2836 - T:520 } [..\..\AA\AAFMediaStorageRead.cpp:810] AA::MediaStorage::CreateFile: Computing cache_size of 16777216 via GetHPBufferSize () for TEST01\TEST01.AAF.

    2017-03-03T08:37:53,354UTC [ERROR] [AMT] [] {P:2836 - T:520 } [sources\CORE\CM_interface.cpp:179] Failed to compute video codec manager mode: inputFormat = <mediaFormat>Compressed</mediaFormat><signalStandard>SS_625_50_I</signalStandard><dropFrame>kAVXFalse</dropFrame><compressionType>Avid::MPEG2::50</compressionType><componentBits>8</componentBits><chromaSubSampling>CSS_4220</chromaSubSampling>, outputFormat = <mediaFormat>Compressed</mediaFormat><signalStandard>SS_625_50_I</signalStandard><dropFrame>kAVXFalse</dropFrame><compressionType>H.264 800Kbps Proxy 625</compressionType>.

    2017-03-03T08:37:53,354UTC [ERROR] [AMT] [] {P:2836 - T:520 } [sources\CORE\AMT_class.cpp:354] CodecManager doesn't support specified input -> output video processing.

    If someone with a little bit of experience in AMT could help me I will apreciate. Regards Nicolás Redondo Zurdo

     

     

     

     

  • Fri, Mar 3 2017 6:32 PM In reply to

    • Vadym
    • Not Ranked
    • Joined on Thu, Apr 17 2014
    • Posts 162
    • Points 2,060
    • Avid Developer Moderator
      Avid Employee

    Re: AMT_2.13.3.10981 First Step Problems

    Hi Nicolas,

    AMT sample application is provided for self education purposes. It is by no means to be used in production and does not cover direct transcode between formats.

    You need to develop your own application to handle your specific requirements.

    Thanks

  • Fri, Mar 3 2017 9:35 PM In reply to

    Re: AMT_2.13.3.10981 First Step Problems

    Hi Vadym,

    Thanks for your answer.

    Of course I undestand that AMT sample application is provided for self education purposes. I was just testing the possibilty in order to understand how AMT works. I had began with the more simple case, and tried to run the sample that is provided with AMT, but it didn't works. After that I try to transcode a simple media, buy it didn't work either. My goal is to develop and applicaction that allow me to checkin to interplay media and also allow me to create the corresponding low resolution format in a quite more complex scenery. The main idea is to create lowresolution media to allow journalist to advanced with edition. The proxy media arrives to the TV station by 4G lines. Later the high resolution arrives to the TV station and I checkin the highresolution. In same cases the proxy resolution that camcorders generate allowed me to generate lowresolution and also SD that allows working with the media until the HD resolution arrives to the TV station. As soon as the HD arrives to the TV station SD resolution is replaced by the highest quality avalaible.

    From the AMT documentation I have understood that AMT allowed transcode functionatility between formats. If It is not possible to transcode beetween formats I need some clue on how to start.

    As you say that it doesn´t cover direct transcode between formats, is it posibly to create a H264_625_0A from any source format? This will give and start point to begin with the AMT. I need to understand how to make transcode before creating my own app.  

    Any help will be apreciate.

    Thanks in advanced

    Regards 

    Nicolás Redondo Zurdo

     

     

     

  • Fri, Mar 3 2017 11:26 PM In reply to

    • Vadym
    • Not Ranked
    • Joined on Thu, Apr 17 2014
    • Posts 162
    • Points 2,060
    • Avid Developer Moderator
      Avid Employee

    Re: AMT_2.13.3.10981 First Step Problems

    Nicolas,

    You can use raw formats to transcode to/from and no audio using sample app. You can develop your application to handle direct transcodes. Audio needs special SMPTE compliant handling that is demonstrated for one frame rate only.

     

    Thanks

  • Mon, Mar 6 2017 8:56 AM In reply to

    Re: AMT_2.13.3.10981 First Step Problems

    Hi Vadym,

     

    I have tried to create the RAW files from AMT and it didn't work either. Not even the sample script  "AMT_TEST_SCRIPT.BAT" works. Does this script works for you?

    I have been testing different input files genereted with ffmpe, ffmbc and bmx and no one works.

    Could you send me a sample on how to create H264_625 AMT video with or without audio from any sample input file with the amt_sample_app?

    Thanks in Advanced

    Regards

    Nicolas Redondo Zurdo

     

     

     

     

     

  • Mon, Mar 6 2017 11:11 AM In reply to

    Re: AMT_2.13.3.10981 First Step Problems

    Hi Again Vadym,

     

    I have tried a new format with these step.

    1.- With ffmbc I have created a OP1A file "XDCAM-HD 50mbps 1080i 50". prueba.mxf

    2.- With bmxtranswrap I have created the corresponding OP1Atom file prueba_xdcam_v1.mxf .

    3.- With amt_dll_sample_app MXF_TO_AMT prueba_xdcam_v1.mxf "" TEST01 I have created the AMT spec.

    4.- With amt_dll_sample_app TRANSCODE TEST01 TEST01\TEST01.XML UNC_1080i_50_0A.XML TEST02 I heve tried to transcode, I have recieved these error.

     

    2017-03-06T11:03:43,905UTC [ERROR] [AMT] [] {P:2940 - T:356 } [sources\CORE\AMT_class.cpp:375] AMT failed to configure CodecManager for video processing.

    Is it necesary to configure any codec?

     

    Regards

    Nicolás Redondo Zurdo

     

     

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