PC環境： Ubuntu 18.04 上面只要安裝下面的提示安裝即可，基本上不必再下載依賴庫的源代碼進行編譯和安裝
編譯步驟：
1， 安裝相關工具：
- 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,得到文件夾ffmpeg，進入ffmpeg文件夾：
- ./configure --enable-shared --prefix=/usr/local/ffmpeg
安裝到/usr/local/ffmpeg下，可通過“--prefix=安裝目錄”進行修改。--enable-shared：指定生成動態庫，默認是靜態庫。靜態庫不方便后續開發。
2.sudo make
3.sudo make install
3，添加ffmpeg庫的鏈接:
在/etc/ld.so.conf中 末尾添加 /usr/local/ffmpeg/lib 即可，執行
- sudo ldconfig
4.安裝VS Code
參考https://blog.csdn.net/u011258217/article/details/78693564
--------------------------------------------------- ubuntu 16.04.5 下還需要按照一下提示進行安裝依賴 -------------------------------------
1、安裝依賴包
sudo apt-get update sudo 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
– 各種lib被安裝在此文件夾.
- bin
– 各種bin被安裝在此文件夾
我已經把所需要的一下文件都下載整理，存在網盤，需要的可以直接獲取鏈接：http://pan.baidu.com/s/1dD8RYEH 密碼：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_sources
wget http://www.tortall.net/projects/yasm/releases/yasm-1.3.0.tar.gz
tar xzvf yasm-1.3.0.tar.gz
cd yasm-1.3.0
./configure --prefix="$HOME/ffmpeg_build" --bindir="$HOME/bin"
make
make install
make distclean
cd ~/ffmpeg_sources
wget http://download.videolan.org/pub/x264/snapshots/last_x264.tar.bz2
tar xjvf last_x264.tar.bz2
cd x264-snapshot*
PATH="$HOME/bin:$PATH" ./configure --prefix="$HOME/ffmpeg_build" --bindir="$HOME/bin" --enable-static
PATH="$HOME/bin:$PATH" make
make install
make distclean
問題：不知道是不是環境變量的關系，很多標准command不能用，參考另一個筆記：linux下提示bash:command not found
export PATH=/bin:/sbin:/usr/bin:/usr/sbin
5、libx265
265的源一直沒下載下來，也暫時不用x265，所以沒有安裝，后續編譯ffmpeg不編譯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="$HOME/ffmpeg_build" --disable-shared
make
make install
make distclean
sudo apt-get install nasm
cd ~/ffmpeg_sources
wget http://downloads.sourceforge.net/project/lame/lame/3.99/lame-3.99.5.tar.gz
tar xzvf lame-3.99.5.tar.gz
cd lame-3.99.5
./configure --prefix="$HOME/ffmpeg_build" --enable-nasm --disable-shared
make
make install
make distclean
cd ~/ffmpeg_sources
wget http://downloads.xiph.org/releases/opus/opus-1.1.tar.gz
tar xzvf opus-1.1.tar.gz
cd opus-1.1
./configure --prefix="$HOME/ffmpeg_build" --disable-shared
make
make install
make distclean
cd ~/ffmpeg_sources
wget http://webm.googlecode.com/files/libvpx-v1.3.0.tar.bz2 ## ！！！！！ 這個應該下不下來，可以百度一下替代， 換上最新版本的，不要用這個，有點太低了。
http://ftp.osuosl.org/pub/blfs/conglomeration/libvpx/
wget -c http://ftp.osuosl.org/pub/blfs/conglomeration/libvpx/libvpx-1.7.0.tar.gz
tar xjvf libvpx-v1.3.0.tar.bz2 cd libvpx-v1.3.0 PATH="$HOME/bin:$PATH" ./configure --prefix="$HOME/ffmpeg_build" --disable-examples --disable-unit-tests PATH="$HOME/bin:$PATH" make make install make clean
## 下面的這個不必了，直接上github上下載源碼即可， https://github.com/FFmpeg/FFmpeg.git
安裝編譯ffmpeg
cd ~/ffmpeg_sources wget http://ffmpeg.org/releases/ffmpeg-snapshot.tar.bz2 tar xjvf ffmpeg-snapshot.tar.bz2 cd ffmpeg PATH="$HOME/bin:$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="$HOME/bin" \ --enable-gpl \ --enable-libass \ --enable-libfdk-aac \ --enable-libfreetype \ --enable-libmp3lame \ --enable-libopus \ --enable-libtheora \ --enable-libvorbis \ --enable-libvpx \ --enable-libx264 \ --enable-libx265 \ --enable-nonfree PATH="$HOME/bin:$PATH" make make install make distclean hash -r
查看ffmpeg是否安裝成功，用ffmpeg -version
之后我們就可以使用ffmpeg 將文件轉化成ts文件，以備m3u8-segmenter切片，搭建hls流媒體服務器。
另外有參考源代碼：
https://github.com/lspbeyond/p264decoder.git
思科家的： https://github.com/cisco/openh264.git
--------------------------------------------------------------------------- 分割線 -------------------------------------------------------------------------
5.測試環境
#include <stdio.h>
#include <libavformat/avformat.h>
#include <libswscale/swscale.h>
#include <libavfilter/avfilter.h>
#define dbmsgc(fmt, args ...) printf("cong:%s[%d]: "fmt"\n", __FUNCTION__, __LINE__,##args)
//#define dbmsg(fmt, args ...) printf("cong:%s:%s[%d]: "fmt"\n",__FILE__, __FUNCTION__, __LINE__,##args)
int main(int argc, char **argv)
{
int i=0;
AVFormatContext *pFormatCtx = NULL;
avcodec_register_all();
#if CONFIG_AVDEVICE
avdevice_register_all();
#endif
avfilter_register_all();
av_register_all();
if(avformat_open_input(&pFormatCtx, argv[1], NULL, NULL)!=0)
return -1; // Couldn't open file
if(avformat_find_stream_info(pFormatCtx, NULL)<0)
return -1; // Couldn't find stream inform
av_dump_format(pFormatCtx,0, 0, 0);
return 0;
}
6..編寫Makefile
FFMPEG=/usr/local/ffmpeg
CC=gcc
CFLAGS=-g -I$(FFMPEG)/include
LDFLAGS = -L$(FFMPEG)/lib/ -lswscale -lswresample -lavformat -lavdevice -lavcodec -lavutil -lavfilter -lm
TARGETS=test
all: $(TARGETS)
test:test.c
$(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS) -std=c++11 #注意這里的-std=c++11
clean:
rm -rf $(TARGETS)
7.make
8../test
測試代碼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;
}
測試代碼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 <name of a video file>\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;
}
本文參考了：
https://blog.csdn.net/wawayu_0/article/details/80564349
https://www.cnblogs.com/candycaicai/p/4689459.html
特此致謝。