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• Having trouble building FFmpeg using GNU make, Makefile:182 : /tests/Makefile : No such file or directory

  24 mai 2022, par Daedalus

  I'm having trouble building FFmpeg as a library to use in a project in vscode C++. I have no experience working with C/C++ libraries and would greatly appreciate any help. I've installed chocolatey and GNU make (GNU Make 4.3) with that, and the source code for FFmpeg. I cannot run make, as it tells me to do in the INSTALL.md file of the source code. I've been using command prompt to run the commands. Here are my errors :

  


  C:\ffmpeg>PowerShell ./configure

C:\ffmpeg>make
Makefile:182: /tests/Makefile: No such file or directory
make: *** No rule to make target '/tests/Makefile'.  Stop.

C:\ffmpeg>make install
Makefile:182: /tests/Makefile: No such file or directory
make: *** No rule to make target '/tests/Makefile'.  Stop.


  


  I've installed FFmpeg from github, and I can't find a working prebuilt library. I've tried different variations of the commands, with PowerShell and directories, but nothing has worked. This is INSTALL.md :

  


  


  Installing FFmpeg

  


  


  1. Type ./configure to create the configuration. A list of configure options is printed by running configure --help.

     


     configure can be launched from a directory different from the FFmpeg sources to build the objects out of tree. To do this, use an
absolute path when launching configure, e.g.
/ffmpegdir/ffmpeg/configure.

     


  


  2. Then type make to build FFmpeg. GNU Make 3.81 or later is required.

     


  


  3. Type make install to install all binaries and libraries you built.

     


  


  


  NOTICE

  


  

  • Non system dependencies (e.g. libx264, libvpx) are disabled by default.

  


  


  


  Any help would be greatly appreciated. Thanks in advance.

  


• How to pass data cuvidParseVideoData

  28 avril 2022, par Serhan Erkovan

  I try to develop streaming program,I have 4k videos that 5 fps and 20 seconds, I encode frames with cuda encoder successfully, i send encoded data over rtp successfully but when i try to decode that data, i got 0 frame from cuvidParseVideoData. Should i do something before the cuvidParseVideoData for example use ffmpeg demuxer ?

  


  RecvDec.cpp

  


  Server* server = new Server(8890 + thread_no);
server->recv_packets();
totBuf* totBuf = server->getTotalBuf();
            if (totBuf->perBuf == nullptr) {
                
                std::cout << prompt << "perBuf null!" << std::endl;
                nVideoBytes = 1;
                continue;
            }

pVideo = new uint8_t[totBuf->totSize];
memcpy(pVideo, totBuf->perBuf->perBuf, totBuf->totSize);
nVideoBytes = totBuf->perBuf->size;
int nFrameReturned = 0;
nFrameReturned = dec.Decode(pVideo, nVideoBytes);




  


  NvDecoder.cpp

  


  int NvDecoder::Decode(const uint8_t *pData, int nSize, int nFlags, int64_t nTimestamp)
{
    m_nDecodedFrame = 0;
    m_nDecodedFrameReturned = 0;
    CUVIDSOURCEDATAPACKET packet = { 0 };
    packet.payload = pData;
    packet.payload_size = nSize;
    packet.flags = nFlags | CUVID_PKT_TIMESTAMP;
    packet.timestamp = nTimestamp;
    if (!pData || nSize == 0) {
        packet.flags |= CUVID_PKT_ENDOFSTREAM;
    }
    NVDEC_API_CALL(cuvidParseVideoData(m_hParser, &packet));
    m_cuvidStream = 0;

    return m_nDecodedFrame;
}



  


  Decode function always returns 0.
If i have to pass my datas from Ffmpeg demuxer, how can i pass type of uint8_t* data to demuxer ?
My data always starts with 0x00 0x00 0x00 0x01. This is start frame tag.

  


• How to work with Cuda cuvidParseVideoData

  27 avril 2022, par Serhan Erkovan

  I try to develop streaming program,I have 4k videos that 5 fps and 20 seconds, I encode frames with cuda encoder successfully, i send encoded data over rtp successfully but when i try to decode that data, i got 0 frame from cuvidParseVideoData. Should i do something before the cuvidParseVideoData for example use ffmpeg demuxer ?

  


  RecvDec.cpp

  


  Server* server = new Server(8890 + thread_no);
server->recv_packets();
totBuf* totBuf = server->getTotalBuf();
            if (totBuf->perBuf == nullptr) {
                
                std::cout << prompt << "perBuf null!" << std::endl;
                nVideoBytes = 1;
                continue;
            }

pVideo = new uint8_t[totBuf->totSize];
memcpy(pVideo, totBuf->perBuf->perBuf, totBuf->totSize);
nVideoBytes = totBuf->perBuf->size;
int nFrameReturned = 0;
nFrameReturned = dec.Decode(pVideo, nVideoBytes);




  


  NvDecoder.cpp

  


  int NvDecoder::Decode(const uint8_t *pData, int nSize, int nFlags, int64_t nTimestamp)
{
    m_nDecodedFrame = 0;
    m_nDecodedFrameReturned = 0;
    CUVIDSOURCEDATAPACKET packet = { 0 };
    packet.payload = pData;
    packet.payload_size = nSize;
    packet.flags = nFlags | CUVID_PKT_TIMESTAMP;
    packet.timestamp = nTimestamp;
    if (!pData || nSize == 0) {
        packet.flags |= CUVID_PKT_ENDOFSTREAM;
    }
    NVDEC_API_CALL(cuvidParseVideoData(m_hParser, &packet));
    m_cuvidStream = 0;

    return m_nDecodedFrame;
}



  


  Decode function always returns 0.
If i have to pass my datas from Ffmpeg demuxer, how can i pass type of uint8_t* data to demuxer ?
My data always starts with 0x00 0x00 0x00 0x01. This is start frame tag.