PC环境： Ubuntu 18.04 上面只要安装下面的提示安装即可，基本上不必再下载依赖库的源代码进行编译和安装
编译步骤：
1， 安装相关工具：
- sudo apt install -y autoconf automake build-essential git libass-dev libfreetype6-dev libsdl2-dev libtheora-dev libtool libva-dev libvdpau-dev libvorbis-dev libxcb1-dev libxcb-shm0-dev libxcb-xfixes0-dev pkg-config texinfo wget zlib1g-dev
- sudo apt install -y nasm yasm cmake mercurial
2，git clone git://source.ffmpeg.org/ffmpeg.git ffmpeg,得到文件夹ffmpeg，进入ffmpeg文件夹：
- ./configure --enable-shared --prefix=/usr/local/ffmpeg
安装到/usr/local/ffmpeg下，可通过“--prefix=安装目录”进行修改。--enable-shared：指定生成动态库，默认是静态库。静态库不方便后续开发。
2.sudo make
3.sudo make install
3，添加ffmpeg库的链接:
在/etc/ld.so.conf中 末尾添加 /usr/local/ffmpeg/lib 即可，执行
- sudo ldconfig
4.安装VS Code
参考https://blog.csdn.net/u011258217/article/details/78693564
--------------------------------------------------- ubuntu 16.04.5 下还需要按照一下提示进行安装依赖 -------------------------------------
参考：
1、安装依赖包
sudo apt-get updatesudo apt-get -y --force-yes install autoconf automake build-essential libass-dev libfreetype6-dev \ libsdl1.2-dev libtheora-dev libtool libva-dev libvdpau-dev libvorbis-dev libxcb1-dev libxcb-shm0-dev \ libxcb-xfixes0-dev pkg-config texi2html zlib1g-dev
mkdir ~/ffmpeg_sources
- ffmpeg_sources – 源文件.
- ffmpeg_build – 各种lib被安装在此文件夹.
- bin – 各种bin被安装在此文件夹
我已经把所需要的一下文件都下载整理，存在网盘，需要的可以直接获取链接：EH 密码：xgoz
sudo apt install yasm libx264 libx265 libfdk-aac libmp3lame libopus libvpx -y
sudo apt install yasm libx264-dev libx265-dev libfdk-aac-dev libmp3lame-dev libopus-dev libvpx-dev -y
3、Yasm
cd ~/ffmpeg_sourceswget http://www.tortall.net/projects/yasm/releases/yasm-1.3.0.tar.gztar xzvf yasm-1.3.0.tar.gzcd yasm-1.3.0./configure --prefix="$HOME/ffmpeg_build" --bindir="$HOME/bin"makemake installmake distclean
cd ~/ffmpeg_sourceswget http://download.videolan.org/pub/x264/snapshots/last_x264.tar.bz2tar xjvf last_x264.tar.bz2cd x264-snapshot*PATH="$HOME/bin:$PATH" ./configure --prefix="$HOME/ffmpeg_build" --bindir="$HOME/bin" --enable-staticPATH="$HOME/bin:$PATH" makemake installmake distclean
问题：不知道是不是环境变量的关系，很多标准command不能用，参考另一个笔记：linux下提示bash:command not found
export PATH=/bin:/sbin:/usr/bin:/usr/sbin
5、libx265
265的源一直没下载下来，也暂时不用x265，所以没有安装，后续编译ffmpeg不编译x265就可以。
6、libfdk-aac
cd ~/ffmpeg_sources wget -O fdk-aac.tar.gz https://github.com/mstorsjo/fdk-aac/tarball/master git clone https://github.com/mstorsjo/fdk-aac.git https://github.com/mstorsjo/fdk-aac/archive/master.zip tar xzvf fdk-aac.tar.gz
cd mstorsjo-fdk-aac* autoreconf -fiv ./configure --prefix="$HOME/ffmpeg_build" --disable-shared make make install make distclean
sudo apt-get install nasmcd ~/ffmpeg_sourceswget http://downloads.sourceforge.net/project/lame/lame/3.99/lame-3.99.5.tar.gztar xzvf lame-3.99.5.tar.gzcd lame-3.99.5./configure --prefix="$HOME/ffmpeg_build" --enable-nasm --disable-sharedmakemake installmake distclean
cd ~/ffmpeg_sourceswget http://downloads.xiph.org/releases/opus/opus-1.1.tar.gztar xzvf opus-1.1.tar.gzcd opus-1.1./configure --prefix="$HOME/ffmpeg_build" --disable-sharedmakemake installmake distclean
cd ~/ffmpeg_sourceswget http://webm.googlecode.com/files/libvpx-v1.3.0.tar.bz2 ## ！！！！！ 这个应该下不下来，可以百度一下替代， 换上最新版本的，不要用这个，有点太低了。http://ftp.osuosl.org/pub/blfs/conglomeration/libvpx/
wget -c http://ftp.osuosl.org/pub/blfs/conglomeration/libvpx/libvpx-1.7.0.tar.gz
tar xjvf libvpx-v1.3.0.tar.bz2cd libvpx-v1.3.0PATH="$HOME/bin:$PATH" ./configure --prefix="$HOME/ffmpeg_build" --disable-examples --disable-unit-testsPATH="$HOME/bin:$PATH" makemake installmake clean ## 下面的这个不必了，直接上github上下载源码即可，
cd ~/ffmpeg_sourceswget http://ffmpeg.org/releases/ffmpeg-snapshot.tar.bz2tar xjvf ffmpeg-snapshot.tar.bz2cd ffmpegPATH="$HOME/bin:$PATH" PKG_CONFIG_PATH="$HOME/ffmpeg_build/lib/pkgconfig" ./configure \ --prefix="$HOME/ffmpeg_build" \ --pkg-config-flags="--static" \ --extra-cflags="-I$HOME/ffmpeg_build/include" \ --extra-ldflags="-L$HOME/ffmpeg_build/lib" \ --bindir="$HOME/bin" \ --enable-gpl \ --enable-libass \ --enable-libfdk-aac \ --enable-libfreetype \ --enable-libmp3lame \ --enable-libopus \ --enable-libtheora \ --enable-libvorbis \ --enable-libvpx \ --enable-libx264 \ --enable-libx265 \ --enable-nonfreePATH="$HOME/bin:$PATH" makemake installmake distcleanhash -r 查看ffmpeg是否安装成功，用ffmpeg -version 之后我们就可以使用ffmpeg 将文件转化成ts文件，以备m3u8-segmenter切片，搭建hls流媒体服务器。
另外有参考源代码：
思科家的：
--------------------------------------------------------------------------- 分割线 -------------------------------------------------------------------------
5.测试环境
#include#include #include #include #define dbmsgc(fmt, args ...) printf("cong:%s[%d]: "fmt"\n", __FUNCTION__, __LINE__,##args)//#define dbmsg(fmt, args ...) printf("cong:%s:%s[%d]: "fmt"\n",__FILE__, __FUNCTION__, __LINE__,##args)int main(int argc, char **argv){ int i=0; AVFormatContext *pFormatCtx = NULL; avcodec_register_all();#if CONFIG_AVDEVICE avdevice_register_all();#endif avfilter_register_all(); av_register_all(); if(avformat_open_input(&pFormatCtx, argv[1], NULL, NULL)!=0) return -1; // Couldn't open file if(avformat_find_stream_info(pFormatCtx, NULL)<0) return -1; // Couldn't find stream inform av_dump_format(pFormatCtx,0, 0, 0); return 0;}
6..编写Makefile
FFMPEG=/usr/local/ffmpegCC=gccCFLAGS=-g -I$(FFMPEG)/includeLDFLAGS = -L$(FFMPEG)/lib/ -lswscale -lswresample -lavformat -lavdevice -lavcodec -lavutil -lavfilter -lm TARGETS=testall: $(TARGETS)test:test.c $(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS) -std=c++11 #注意这里的-std=c++11clean: rm -rf $(TARGETS)
7.make
8../test
测试代码2：
/* * Copyright (c) 2015 Ludmila Glinskih * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. *//** * H264 codec test. */#include "libavutil/adler32.h"#include "libavcodec/avcodec.h"#include "libavformat/avformat.h"#include "libavutil/imgutils.h"static int video_decode_example(const char *input_filename){ AVCodec *codec = NULL; AVCodecContext *ctx= NULL; AVCodecParameters *origin_par = NULL; AVFrame *fr = NULL; uint8_t *byte_buffer = NULL; AVPacket pkt; AVFormatContext *fmt_ctx = NULL; int number_of_written_bytes; int video_stream; int got_frame = 0; int byte_buffer_size; int i = 0; int result; int end_of_stream = 0; result = avformat_open_input(&fmt_ctx, input_filename, NULL, NULL); if (result < 0) { av_log(NULL, AV_LOG_ERROR, "Can't open file\n"); return result; } result = avformat_find_stream_info(fmt_ctx, NULL); if (result < 0) { av_log(NULL, AV_LOG_ERROR, "Can't get stream info\n"); return result; } video_stream = av_find_best_stream(fmt_ctx, AVMEDIA_TYPE_VIDEO, -1, -1, NULL, 0); if (video_stream < 0) { av_log(NULL, AV_LOG_ERROR, "Can't find video stream in input file\n"); return -1; } origin_par = fmt_ctx->streams[video_stream]->codecpar; codec = avcodec_find_decoder(origin_par->codec_id); if (!codec) { av_log(NULL, AV_LOG_ERROR, "Can't find decoder\n"); return -1; } ctx = avcodec_alloc_context3(codec); if (!ctx) { av_log(NULL, AV_LOG_ERROR, "Can't allocate decoder context\n"); return AVERROR(ENOMEM); } result = avcodec_parameters_to_context(ctx, origin_par); if (result) { av_log(NULL, AV_LOG_ERROR, "Can't copy decoder context\n"); return result; } result = avcodec_open2(ctx, codec, NULL); if (result < 0) { av_log(ctx, AV_LOG_ERROR, "Can't open decoder\n"); return result; } fr = av_frame_alloc(); if (!fr) { av_log(NULL, AV_LOG_ERROR, "Can't allocate frame\n"); return AVERROR(ENOMEM); } byte_buffer_size = av_image_get_buffer_size(ctx->pix_fmt, ctx->width, ctx->height, 16); byte_buffer = av_malloc(byte_buffer_size); if (!byte_buffer) { av_log(NULL, AV_LOG_ERROR, "Can't allocate buffer\n"); return AVERROR(ENOMEM); } printf("#tb %d: %d/%d\n", video_stream, fmt_ctx->streams[video_stream]->time_base.num, fmt_ctx->streams[video_stream]->time_base.den); i = 0; av_init_packet(&pkt); do { if (!end_of_stream) if (av_read_frame(fmt_ctx, &pkt) < 0) end_of_stream = 1; if (end_of_stream) { pkt.data = NULL; pkt.size = 0; } if (pkt.stream_index == video_stream || end_of_stream) { got_frame = 0; if (pkt.pts == AV_NOPTS_VALUE) pkt.pts = pkt.dts = i; result = avcodec_decode_video2(ctx, fr, &got_frame, &pkt); if (result < 0) { av_log(NULL, AV_LOG_ERROR, "Error decoding frame\n"); return result; } if (got_frame) { number_of_written_bytes = av_image_copy_to_buffer(byte_buffer, byte_buffer_size, (const uint8_t* const *)fr->data, (const int*) fr->linesize, ctx->pix_fmt, ctx->width, ctx->height, 1); if (number_of_written_bytes < 0) { av_log(NULL, AV_LOG_ERROR, "Can't copy image to buffer\n"); return number_of_written_bytes; } printf("%d, %10"PRId64", %10"PRId64", %8"PRId64", %8d, 0x%08lx\n", video_stream, fr->pts, fr->pkt_dts, fr->pkt_duration, number_of_written_bytes, av_adler32_update(0, (const uint8_t*)byte_buffer, number_of_written_bytes)); } av_packet_unref(&pkt); av_init_packet(&pkt); } i++; } while (!end_of_stream || got_frame); av_packet_unref(&pkt); av_frame_free(&fr); avcodec_close(ctx); avformat_close_input(&fmt_ctx); avcodec_free_context(&ctx); av_freep(&byte_buffer); return 0;}int main(int argc, char **argv){ if (argc < 2) { av_log(NULL, AV_LOG_ERROR, "Incorrect input\n"); return 1; } if (video_decode_example(argv[1]) != 0) return 1; return 0;}
测试代码3：
/* * Copyright (c) 2015 Ludmila Glinskih * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. *//** * draw_horiz_band test. */#include "libavutil/adler32.h"#include "libavcodec/avcodec.h"#include "libavformat/avformat.h"#include "libavutil/imgutils.h"uint8_t *slice_byte_buffer;uint8_t slice_byte_buffer_size;int draw_horiz_band_called;static void draw_horiz_band(AVCodecContext *ctx, const AVFrame *fr, int offset[4], int slice_position, int type, int height){ int i; const AVPixFmtDescriptor *pix_fmt_desc; int chroma_w, chroma_h; int shift_slice_position; int shift_height; draw_horiz_band_called = 1; pix_fmt_desc = av_pix_fmt_desc_get(ctx->pix_fmt); chroma_w = -((-ctx->width) >> pix_fmt_desc->log2_chroma_w); chroma_h = -((-height) >> pix_fmt_desc->log2_chroma_h); shift_slice_position = -((-slice_position) >> pix_fmt_desc->log2_chroma_h); shift_height = -((-ctx->height) >> pix_fmt_desc->log2_chroma_h); for (i = 0; i < height; i++) { memcpy(slice_byte_buffer + ctx->width * slice_position + i * ctx->width, fr->data[0] + offset[0] + i * fr->linesize[0], ctx->width); } for (i = 0; i < chroma_h; i++) { memcpy(slice_byte_buffer + ctx->width * ctx->height + chroma_w * shift_slice_position + i * chroma_w, fr->data[1] + offset[1] + i * fr->linesize[1], chroma_w); } for (i = 0; i < chroma_h; i++) { memcpy(slice_byte_buffer + ctx->width * ctx->height + chroma_w * shift_height + chroma_w * shift_slice_position + i * chroma_w, fr->data[2] + offset[2] + i * fr->linesize[2], chroma_w); }}static int video_decode(const char *input_filename){ AVCodec *codec = NULL; AVCodecContext *ctx= NULL; AVCodecParameters *origin_par = NULL; uint8_t *byte_buffer = NULL; AVFrame *fr = NULL; AVPacket pkt; AVFormatContext *fmt_ctx = NULL; int number_of_written_bytes; int video_stream; int got_frame = 0; int byte_buffer_size; int result; int end_of_stream = 0; draw_horiz_band_called = 0; result = avformat_open_input(&fmt_ctx, input_filename, NULL, NULL); if (result < 0) { av_log(NULL, AV_LOG_ERROR, "Can't open file\n"); return result; } result = avformat_find_stream_info(fmt_ctx, NULL); if (result < 0) { av_log(NULL, AV_LOG_ERROR, "Can't get stream info\n"); return result; } video_stream = av_find_best_stream(fmt_ctx, AVMEDIA_TYPE_VIDEO, -1, -1, NULL, 0); if (video_stream < 0) { av_log(NULL, AV_LOG_ERROR, "Can't find video stream in input file\n"); return -1; } origin_par = fmt_ctx->streams[video_stream]->codecpar; codec = avcodec_find_decoder(origin_par->codec_id); if (!codec) { av_log(NULL, AV_LOG_ERROR, "Can't find decoder\n"); return -1; } ctx = avcodec_alloc_context3(codec); if (!ctx) { av_log(NULL, AV_LOG_ERROR, "Can't allocate decoder context\n"); return AVERROR(ENOMEM); } result = avcodec_parameters_to_context(ctx, origin_par); if (result) { av_log(NULL, AV_LOG_ERROR, "Can't copy decoder context\n"); return result; } ctx->draw_horiz_band = draw_horiz_band; ctx->thread_count = 1; result = avcodec_open2(ctx, codec, NULL); if (result < 0) { av_log(ctx, AV_LOG_ERROR, "Can't open decoder\n"); return result; } fr = av_frame_alloc(); if (!fr) { av_log(NULL, AV_LOG_ERROR, "Can't allocate frame\n"); return AVERROR(ENOMEM); } if (strcmp(codec->name, "flv") && strcmp(codec->name, "mpeg4") && strcmp(codec->name, "huffyuv")) { av_log(NULL, AV_LOG_ERROR, "Wrong codec\n"); return -1; } byte_buffer_size = av_image_get_buffer_size(ctx->pix_fmt, ctx->width, ctx->height, 32); byte_buffer = av_malloc(byte_buffer_size); if (!byte_buffer) { av_log(NULL, AV_LOG_ERROR, "Can't allocate buffer\n"); return AVERROR(ENOMEM); } slice_byte_buffer = av_malloc(byte_buffer_size); if (!slice_byte_buffer) { av_log(NULL, AV_LOG_ERROR, "Can't allocate buffer\n"); return AVERROR(ENOMEM); } memset(slice_byte_buffer, 0, byte_buffer_size); slice_byte_buffer_size = byte_buffer_size; av_init_packet(&pkt); do { if (!end_of_stream) { if (av_read_frame(fmt_ctx, &pkt) < 0) { end_of_stream = 1; } } if (end_of_stream) { pkt.data = NULL; pkt.size = 0; } if (pkt.stream_index == video_stream || end_of_stream) { got_frame = 0; result = avcodec_decode_video2(ctx, fr, &got_frame, &pkt); if (result < 0) { av_log(NULL, AV_LOG_ERROR, "Error decoding frame\n"); return result; } if (got_frame) { number_of_written_bytes = av_image_copy_to_buffer(byte_buffer, byte_buffer_size, (const uint8_t* const *)fr->data, (const int*) fr->linesize, ctx->pix_fmt, ctx->width, ctx->height, 1); if (number_of_written_bytes < 0) { av_log(NULL, AV_LOG_ERROR, "Can't copy image to buffer\n"); return number_of_written_bytes; } if (draw_horiz_band_called == 0) { av_log(NULL, AV_LOG_ERROR, "draw_horiz_band haven't been called!\n"); return -1; } if (av_adler32_update(0, (const uint8_t*)byte_buffer, number_of_written_bytes) != av_adler32_update(0, (const uint8_t*)slice_byte_buffer, number_of_written_bytes)) { av_log(NULL, AV_LOG_ERROR, "Decoded frames with and without draw_horiz_band are not the same!\n"); return -1; } } av_packet_unref(&pkt); av_init_packet(&pkt); } } while (!end_of_stream || got_frame); av_packet_unref(&pkt); av_frame_free(&fr); avcodec_close(ctx); avformat_close_input(&fmt_ctx); avcodec_free_context(&ctx); av_freep(&byte_buffer); av_freep(&slice_byte_buffer); return 0;}int main(int argc, char **argv){ if (argc < 2) { av_log(NULL, AV_LOG_ERROR, "Incorrect input: expected %s \nNote that test works only for huffyuv, flv and mpeg4 decoders\n", argv[0]); return 1; } if (video_decode(argv[1]) != 0) return 1; return 0;}
本文参考了：
特此致谢。