Unbuntu18.04 编译FFmpeg 支持 QSV 硬编解码

程序员文章站 2022-07-14 18:18:04

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在Linux下，由于FFmpeg软解码CPU占用过高，所以打算使用h264_qsv硬解码，本文并非原创，主要参考以下文章，在此记录下编译过程，以便日后使用。

参考文章：

https://zhuanlan.zhihu.com/p/62246545

http://blog.chinaunix.net/uid-21501855-id-5835281.html

编译过程：

下载MediaSDK 20.1.1 相关依赖库 https://github.com/Intel-Media-SDK/MediaSDK/releases/tag/intel-mediasdk-20.1.1
安装 libva
1. ./autogen.sh --prefix=/opt/intel/libva --libdir=/opt/intel/libva/lib
2. make -j8 & sudo make install
3. export PKG_CONFIG_PATH=/opt/intel/libva/lib/pkgconfig
4. export LD_LIBRARY_PATH=/opt/intel/libva/lib:$LD_LIBRARY_PATH
5. sudo ldconfig
安装libva-util
1. ./autogen.sh --prefix=/opt/intel/libva-utils --libdir=/opt/intel/libva-utils/lib
2. make -j8 & sudo make install

安装media-driver

分别解压 gmmlib-intel-gmmlib-20.1.1.zip和 media-driver-intel-media-20.1.1.zip
cd gmmlib-intel-gmmlib-20.1.1.zip
mkdir build & cd build
cmake .. & make -j8 & sudo make install
创建gmmlib-mediadriver目录
cd gmmlib-mediadriver

cmake ../media-driver \
    -DMEDIA_VERSION="2.0.0" \
    -DBUILD_ALONG_WITH_CMRTLIB=1 \
    -DBS_DIR_GMMLIB=`pwd`/../gmmlib/Source/GmmLib/ \
    -DBS_DIR_COMMON=`pwd`/../gmmlib/Source/Common/ \
    -DBS_DIR_INC=`pwd`/../gmmlib/Source/inc/ \
    -DBS_DIR_MEDIA=`pwd`/../media-driver \
    -DCMAKE_INSTALL_PREFIX=/opt/intel/media-driver \
    -DCMAKE_INSTALL_LIBDIR=/opt/intel/media-driver/lib \
    -DINSTALL_DRIVERS_SYSCONF=OFF \
    -DLIBVA_DRIVERS_PATH=/opt/intel/media-driver/lib/dri

make -j8
sudo make install

8. Unbuntu18.04 编译FFmpeg 支持 QSV 硬编解码

配置环境变量
1. export LIBVA_DRIVER_NAME=iHD
2. export LIBVA_DRIVERS_PATH=/opt/intel/media-driver/lib/dri
验证
1. cd /opt/intel/libva-utils/bin
2. ./vainfo

安装intel media SDK

mkdir build

cd build

make -j8 & sudo make install

export LD_LIBRARY_PATH=/opt/intel/mediasdk/lib:$LD_LIBRARY_PATH

export MFX_HOME=/opt/intel/mediasdk/lib/pkgconfig

export PKG_CONFIG_PATH=/opt/intel/mediasdk/lib/pkgconfig:$PKG_CONFIG_PATH

sudo ldconfig

echo $LIBVA_DRIVER_NAME #应该输出 iHD

echo $LIBVA_DRIVERS_PATH #应该输出 /opt/intel/media-driver/lib/dri

echo $MFX_HOME #应该输出 /opt/intel/mediasdk/lib/pkgconfig

echo $PKG_CONFIG_PATH #应该输出 "/opt/intel/mediasdk/lib/pkgconfig:/opt/intel/libva/lib/pkgconfig:"这部分内容。

echo $LD_LIBRARY_PATH #输出的内容应该含有 "/opt/intel/mediasdk/lib:/opt/intel/libva/lib:"

编译 FFmpeg n4.3

修改libavformat/movenc.c 支持G711
修改 movenc.c

 static int mov_write_audio_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContext *mov, MOVTrack *track)

    if (track->mode == MODE_MOV) {
            avio_wb16(pb, track->par->channels);
            if (track->par->codec_id == AV_CODEC_ID_PCM_U8 ||
                track->par->codec_id == AV_CODEC_ID_PCM_S8)
                avio_wb16(pb, 8); /* bits per sample */
            else if (track->par->codec_id == AV_CODEC_ID_ADPCM_G726)
                avio_wb16(pb, track->par->bits_per_coded_sample);
            else
                avio_wb16(pb, 16);
            avio_wb16(pb, track->audio_vbr ? -2 : 0); /* compression ID */
        } else { /* reserved for mp4/3gp */
            avio_wb16(pb, track->par->channels > 0 ?
                          track->par->channels : 1);
            track->par->bits_per_coded_sample = av_get_bits_per_sample(track->par->codec_id);
            avio_wb16(pb, track->par->bits_per_coded_sample > 0 ?
                          track->par->bits_per_coded_sample : 16);
            avio_wb16(pb, 0);
        }


      avio_wb16(pb, 0); /* packet size (= 0) */
        if (track->par->codec_id == AV_CODEC_ID_OPUS)
            avio_wb16(pb, 48000);
        else
            avio_wb16(pb, track->par->sample_rate <= UINT16_MAX ?
                          track->par->sample_rate : 0);
        avio_wb16(pb, 0); /* Reserved */


static unsigned int mov_find_codec_tag(AVFormatContext *s, MOVTrack *track)
{
    int tag;


    if (track->mode == MODE_MP4 || track->mode == MODE_PSP)
        tag = track->par->codec_tag;
    else if (track->mode == MODE_ISM)
        tag = track->par->codec_tag;
    else if (track->mode == MODE_IPOD) {
        if (!av_match_ext(s->filename, "m4a") &&
            !av_match_ext(s->filename, "m4v") &&
            !av_match_ext(s->filename, "m4b"))
            av_log(s, AV_LOG_WARNING, "Warning, extension is not .m4a nor .m4v "
                   "Quicktime/Ipod might not play the file\n");
        tag = track->par->codec_tag;
    } else if (track->mode & MODE_3GP)
        tag = track->par->codec_tag;
    else if (track->mode == MODE_F4V)
        tag = track->par->codec_tag;
    else
        tag = mov_get_codec_tag(s, track);


    if (tag == 0){
        tag = mov_get_codec_tag(s, track);
    }


    return tag;
}

编译FFmpeg：

./configure --enable-shared \
              --disable-x86asm \
              --disable-lzma \
              --enable-pic \
              --extra-cflags=-fPIC \
              --extra-cxxflags=-fPIC \
              --enable-libmfx \
              --enable-nonfree \
              --enable-encoder=h264_qsv \
              --enable-decoder=h264_qsv \
              --enable-libfreetype \
              --enable-libfontconfig \
              --enable-libfribidi \
              --enable-encoder=pcm_alaw \
              --enable-decoder=pcm_alaw \
              --prefix=/opt/ffmpeg \
              --libdir=/opt/ffmpeg/lib \

make -j8
sudo make install

测试
1. ./ffplay -vcodec h264_qsv -i test.mp4
2. ./ffmpeg -y -i 1.mp4 -pix_fmt nv12 -c:v h264_qsv -profile:v baseline -preset fast -b:v 4000k -an test_output.mp4

参考：

注：

编译所有流程最好在一个进程中进行
LIBVA_DRIVER_NAME和LIBVA_DRIVER_PATH, 可配置系统环境 etc/environment
MediaSDK 20.1.1 亲测 FFmpeg n4.3 h264_qsv成功，FFmpeg n4.1h264_qsv失败

    [h264_qsv @ 0x55ef1dc72040] Low power mode is unsupported
    [h264_qsv @ 0x55ef1dc72040] Current frame rate is unsupported
    [h264_qsv @ 0x55ef1dc72040] Current picture structure is unsupported
    [h264_qsv @ 0x55ef1dc72040] Current resolution is unsupported
    [h264_qsv @ 0x55ef1dc72040] Current pixel format is unsupported
    [h264_qsv @ 0x55ef1dc72040] some encoding parameters are not supported by the QSV runtime. Please double check the input parameters.
    Error initializing output stream 0:0 -- Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height

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Unbuntu18.04 编译FFmpeg 支持 QSV 硬编解码