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• avcodec/nvdec_av1 : fix setting film grain parameters for frames with update_grain...

  12 novembre 2020, par James Almer

  avcodec/nvdec_av1 : fix setting film grain parameters for frames with update_grain == 0
  The spec in section 6.8.20 states the parameters should be loaded from a
  
  reference frame indexed by film_grain_params_ref_idx.
  Signed-off-by : James Almer <jamrial@gmail.com>
  

  • [DH] libavcodec/nvdec_av1.c

• ffmpeg hardwareaccleration using —enable-nvenc giving errors in vs 2012

  3 octobre 2020, par user2290878

  am trying to compile ffmpeg with nvenc enabled using msvc toolchain with vs 2012 , its giving error ,

  


  ERROR : nvenc requested but not found

  


  following error logs is seen in config.log :

  


  c99wrap cl -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Dstrtod=avpriv_strtod -Dsnprintf=avpriv_snprintf -D_snprintf=avpriv_snprintf -Dvsnprintf=avpriv_vsnprintf -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS -D_WIN32_WINNT=0x0502 -nologo -Dstrtoll=_strtoi64 -Dstrtoull=_strtoui64 -Z7 -W4 -wd4244 -wd4127 -wd4018 -wd4389 -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 -wd4152 -wd4324 -we4013 -wd4100 -wd4214 -wd4307 -wd4273 -wd4554 -wd4701 -O2 -Oy- -FIstdlib.h -c -Fo./ffconf.VPz0M2D2.o ./ffconf.hc8dkH6N.c
ffconf.hc8dkH6N.c
ffconf.VPz0M2D2.o_converted.c
./ffconf.hc8dkH6N.c(1) : warning C4431: missing type specifier - int assumed. Note: C no longer supports default-int
./ffconf.hc8dkH6N.c(1) : error C2054: expected '(' to follow 'inline'
./ffconf.hc8dkH6N.c(1) : error C2085: 'foo' : not in formal parameter list
./ffconf.hc8dkH6N.c(1) : error C2143: syntax error : missing ';' before '{'
check_host_cc
BEGIN ./ffconf.hc8dkH6N.c
    1   static inline int foo(int a) { return a; }
END ./ffconf.hc8dkH6N.c
c99wrap cl -nologo -W4 -wd4244 -wd4127 -wd4018 -wd4389 -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 -wd4152 -wd4324 -we4013 -wd4100 -wd4214 -wd4307 -wd4273 -wd4554 -wd4701 -O3 -c -Fo./ffconf.VPz0M2D2.o ./ffconf.hc8dkH6N.c
cl : Command line warning D9002 : ignoring unknown option '-O3'
ffconf.hc8dkH6N.c
cl : Command line warning D9002 : ignoring unknown option '-O3'
ffconf.VPz0M2D2.o_converted.c
./ffconf.hc8dkH6N.c(1) : warning C4431: missing type specifier - int assumed. Note: C no longer supports default-int
./ffconf.hc8dkH6N.c(1) : error C2054: expected '(' to follow 'inline'
./ffconf.hc8dkH6N.c(1) : error C2085: 'foo' : not in formal parameter list
./ffconf.hc8dkH6N.c(1) : error C2143: syntax error : missing ';' before '{'
ERROR: nvenc requested but not found


  


• How to save AVPacket if I have input information from online camera

  31 mars 2020, par Orest

  I am new to libav.
I have a online video camera and want save video from archive to the video file with libav

  



  Camera provides such data

  



  uint32_t frameType, // I frame or P frame

void *frame, //pointer to the frame

size_t frameSize, //size of the frame in bytes

uint64_t timeStamp, //time stamp in time_t units

uint32_t width, //frame width

uint32_t height, //frame heigh

uint32_t genTime, //I do not now what is this. allways 0

const char *encodingType //H264 or H265


  



  I tried this

  



  void writeHeader(){
mOutputFilePath = outputFilePath;
    int ret = 0;
    avformat_alloc_output_context2(&output_format_context, nullptr, nullptr, outputFilePath.c_str());

AVStream *out_stream;
        out_stream = avformat_new_stream(output_format_context, nullptr);

        out_stream->discard = AVDISCARD_DEFAULT;//не змінювати
        out_stream->codecpar->level = 42;//не змінювати
        out_stream->codecpar->profile = FF_PROFILE_H264_HIGH;//не змінювати
        out_stream->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;

        if(codecID == "H264") out_stream->codecpar->codec_id = AV_CODEC_ID_H264;
        else if(codecID == "H265") out_stream->codecpar->codec_id = AV_CODEC_ID_H265;

        out_stream->codecpar->format = AV_PIX_FMT_YUV420P;
        out_stream->codecpar->height = heightFrame;
        out_stream->codecpar->width = widthFrame;
        //        out_stream->codecpar->bit_rate = 2478235;
        //        out_stream->codecpar->bits_per_coded_sample = 24;
        //        out_stream->codecpar->bits_per_raw_sample = 8;
        out_stream->codecpar->sample_aspect_ratio.num = 0;
        out_stream->codecpar->sample_aspect_ratio.den = 1;
        out_stream->codecpar->color_primaries = AVCOL_PRI_UNSPECIFIED;//не змінювати

avio_open(&output_format_context->pb, mOutputFilePath.c_str(), AVIO_FLAG_WRITE);
avformat_write_header(output_format_context, &opt);
}

void writePacket(){
 AVPacket inputPacket;
        av_init_packet(&inputPacket);
        inputPacket.buf = NULL;
        inputPacket.pts = (int)timeStamp;
        inputPacket.dts = inputPacket.pts; 
        inputPacket.data = (unsigned char*)frame;
        inputPacket.size = (int)frameSize;

        if (frameType == KP2P_FRAME_TYPE_IFRAME)
        {
            inputPacket.flags = AV_PKT_FLAG_KEY;
        }
        inputPacket.duration = 0;
        inputPacket.pos = -1;
av_interleaved_write_frame(output_format_context, &inputPacket);
    av_packet_unref(&inputPacket);
}

void closeFile()
{
av_write_trailer(output_format_context);
    if (output_format_context && !(output_format_context->oformat->flags & AVFMT_NOFILE))
        avio_closep(&output_format_context->pb);
    avformat_free_context(output_format_context);
}


  



  in output file I have black vindow and time is not correct (input 30 seconds in out 2 seconds)
What am I doing wrong ?