修改ffmpeg5.0的代码，让ffmpeg的flv支持h265封装及解封装
中间目录：out
1、x264
下载x264-stable.zip
unzip x264-stable.zip
cd x264-stable
./configure --enable-shared --enable-static
make
make DESTDIR=../out install
2、安装nv-codec-headers
git clone https://git.videolan.org/git/ffmpeg/nv-codec-headers.git
cd nv-codec-headers
make
sudo make isntall
3、x265
下载x265_3.2.1.tar.gz
tar -zxvf x265_3.2.1.tar.gz
cd x265_3.2.1
cd build/linux
./make-Makefiles.bash
make
make DESTDIR=../../../out install
4、mp3
下载lame-3.100.tar.gz
tar -zxvf lame-3.100.tar.gz
cd lame-3.100
./configure
make
make DESTDIR=../out install
5、ffmpeg
下载 FFmpeg-release-5.0.zip
unzip FFmpeg-release-5.0.zip
修改 FFmpeg-release-5.0/libavformat 下flv相关代码，让ffmpeg的flv支持h265(hevc)
5.1修改flv.h，扩展rtmp协议的支持 FLV_CODECID_HEVC = 12,
- didiff --git a/flv0.h b/flv.h
- index 3571b90..91f0065 100644
- --- a/flv0.h
- +++ b/flv.h
- @@ -110,6 +110,7 @@ enum {
- FLV_CODECID_H264 = 7,
- FLV_CODECID_REALH263= 8,
- FLV_CODECID_MPEG4 = 9,
- + FLV_CODECID_HEVC = 12,
- };
-
- enum {
5.2修改解码flvdec.c，参照h264，增加h265(hevc)
- diff --git a/flvdec0.c b/flvdec.c
- index b9e36b3..8a9261b 100644
- --- a/flvdec0.c
- +++ b/flvdec.c
- @@ -321,6 +321,8 @@ static int flv_same_video_codec(AVCodecParameters *vpar, int flags)
- return vpar->codec_id == AV_CODEC_ID_VP6A;
- case FLV_CODECID_H264:
- return vpar->codec_id == AV_CODEC_ID_H264;
- + case FLV_CODECID_HEVC:
- + return vpar->codec_id == AV_CODEC_ID_HEVC;
- default:
- return vpar->codec_tag == flv_codecid;
- }
- @@ -367,6 +369,11 @@ static int flv_set_video_codec(AVFormatContext *s, AVStream *vstream,
- vstreami->need_parsing = AVSTREAM_PARSE_HEADERS;
- ret = 3; // not 4, reading packet type will consume one byte
- break;
- + case FLV_CODECID_HEVC:
- + par->codec_id = AV_CODEC_ID_HEVC;
- + vstreami->need_parsing = AVSTREAM_PARSE_HEADERS;
- + ret = 3; // not 4, reading packet type will consume one byte
- + break;
- case FLV_CODECID_MPEG4:
- par->codec_id = AV_CODEC_ID_MPEG4;
- ret = 3;
- @@ -1243,6 +1250,7 @@ retry_duration:
-
- if (st->codecpar->codec_id == AV_CODEC_ID_AAC ||
- st->codecpar->codec_id == AV_CODEC_ID_H264 ||
- + st->codecpar->codec_id == AV_CODEC_ID_HEVC ||
- st->codecpar->codec_id == AV_CODEC_ID_MPEG4) {
- int type = avio_r8(s->pb);
- size--;
- @@ -1252,7 +1260,7 @@ retry_duration:
- goto leave;
- }
-
- - if (st->codecpar->codec_id == AV_CODEC_ID_H264 || st->codecpar->codec_id == AV_CODEC_ID_MPEG4) {
- + if (st->codecpar->codec_id == AV_CODEC_ID_H264 || st->codecpar->codec_id == AV_CODEC_ID_HEVC ||st->codecpar->codec_id == AV_CODEC_ID_MPEG4) {
- // sign extension
- int32_t cts = (avio_rb24(s->pb) + 0xff800000) ^ 0xff800000;
- pts = av_sat_add64(dts, cts);
- @@ -1268,7 +1276,7 @@ retry_duration:
- }
- }
- if (type == 0 && (!st->codecpar->extradata || st->codecpar->codec_id == AV_CODEC_ID_AAC ||
- - st->codecpar->codec_id == AV_CODEC_ID_H264)) {
- + st->codecpar->codec_id == AV_CODEC_ID_H264 || st->codecpar->codec_id == AV_CODEC_ID_HEVC)) {
- AVDictionaryEntry *t;
-
- if (st->codecpar->extradata) {
5.3修改编码flvenc.c，增加头文件hevc.h
注意两个地方：
1）ff_isom_write_hvcc(pb, par->extradata, par->extradata_size,0);
2）if ((ret = ff_hevc_annexb2mp4_buf(pkt->data, &data, &size,0,NULL)) < 0)
- diff --git a/flvenc0.c b/flvenc.c
- index 66c530a..2be4bec 100644
- --- a/flvenc0.c
- +++ b/flvenc.c
- @@ -35,6 +35,7 @@
- #include "libavutil/opt.h"
- #include "libavcodec/put_bits.h"
-
- +#include "hevc.h"
-
- static const AVCodecTag flv_video_codec_ids[] = {
- { AV_CODEC_ID_FLV1, FLV_CODECID_H263 },
- @@ -46,6 +47,7 @@ static const AVCodecTag flv_video_codec_ids[] = {
- { AV_CODEC_ID_VP6, FLV_CODECID_VP6 },
- { AV_CODEC_ID_VP6A, FLV_CODECID_VP6A },
- { AV_CODEC_ID_H264, FLV_CODECID_H264 },
- + { AV_CODEC_ID_HEVC, FLV_CODECID_HEVC },
- { AV_CODEC_ID_NONE, 0 }
- };
-
- @@ -490,7 +492,7 @@ static void flv_write_codec_header(AVFormatContext* s, AVCodecParameters* par, i
- AVIOContext *pb = s->pb;
- FLVContext *flv = s->priv_data;
-
- - if (par->codec_id == AV_CODEC_ID_AAC || par->codec_id == AV_CODEC_ID_H264
- + if (par->codec_id == AV_CODEC_ID_AAC || par->codec_id == AV_CODEC_ID_H264 || par->codec_id == AV_CODEC_ID_HEVC
- || par->codec_id == AV_CODEC_ID_MPEG4) {
- int64_t pos;
- avio_w8(pb,
- @@ -537,7 +539,15 @@ static void flv_write_codec_header(AVFormatContext* s, AVCodecParameters* par, i
- avio_w8(pb, par->codec_tag | FLV_FRAME_KEY); // flags
- avio_w8(pb, 0); // AVC sequence header
- avio_wb24(pb, 0); // composition time
- - ff_isom_write_avcc(pb, par->extradata, par->extradata_size);
- + //ff_isom_write_avcc(pb, par->extradata, par->extradata_size);
- + if(par->codec_id==AV_CODEC_ID_HEVC)
- + {
- + ff_isom_write_hvcc(pb, par->extradata, par->extradata_size,0);
- + }
- + else
- + {
- + ff_isom_write_avcc(pb, par->extradata, par->extradata_size);
- + }
- }
- data_size = avio_tell(pb) - pos;
- avio_seek(pb, -data_size - 10, SEEK_CUR);
- @@ -797,7 +807,7 @@ end:
- AVCodecParameters *par = s->streams[i]->codecpar;
- FLVStreamContext *sc = s->streams[i]->priv_data;
- if (par->codec_type == AVMEDIA_TYPE_VIDEO &&
- - (par->codec_id == AV_CODEC_ID_H264 || par->codec_id == AV_CODEC_ID_MPEG4))
- + (par->codec_id == AV_CODEC_ID_H264 || par->codec_id == AV_CODEC_ID_HEVC || par->codec_id == AV_CODEC_ID_MPEG4))
- put_avc_eos_tag(pb, sc->last_ts);
- }
- }
- @@ -848,12 +858,12 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt)
- if (par->codec_id == AV_CODEC_ID_VP6F || par->codec_id == AV_CODEC_ID_VP6A ||
- par->codec_id == AV_CODEC_ID_VP6 || par->codec_id == AV_CODEC_ID_AAC)
- flags_size = 2;
- - else if (par->codec_id == AV_CODEC_ID_H264 || par->codec_id == AV_CODEC_ID_MPEG4)
- + else if (par->codec_id == AV_CODEC_ID_H264 || par->codec_id == AV_CODEC_ID_HEVC || par->codec_id == AV_CODEC_ID_MPEG4)
- flags_size = 5;
- else
- flags_size = 1;
-
- - if (par->codec_id == AV_CODEC_ID_AAC || par->codec_id == AV_CODEC_ID_H264
- + if (par->codec_id == AV_CODEC_ID_AAC || par->codec_id == AV_CODEC_ID_H264 || par->codec_id == AV_CODEC_ID_HEVC
- || par->codec_id == AV_CODEC_ID_MPEG4) {
- size_t side_size;
- uint8_t *side = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, &side_size);
- @@ -874,7 +884,7 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt)
- "Packets are not in the proper order with respect to DTS\n");
- return AVERROR(EINVAL);
- }
- - if (par->codec_id == AV_CODEC_ID_H264 || par->codec_id == AV_CODEC_ID_MPEG4) {
- + if (par->codec_id == AV_CODEC_ID_H264 || par->codec_id == AV_CODEC_ID_HEVC || par->codec_id == AV_CODEC_ID_MPEG4) {
- if (pkt->pts == AV_NOPTS_VALUE) {
- av_log(s, AV_LOG_ERROR, "Packet is missing PTS\n");
- return AVERROR(EINVAL);
- @@ -914,11 +924,20 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt)
- return AVERROR(EINVAL);
- }
-
- - if (par->codec_id == AV_CODEC_ID_H264 || par->codec_id == AV_CODEC_ID_MPEG4) {
- + if (par->codec_id == AV_CODEC_ID_H264 || par->codec_id == AV_CODEC_ID_HEVC || par->codec_id == AV_CODEC_ID_MPEG4) {
- /* check if extradata looks like mp4 formatted */
- if (par->extradata_size > 0 && *(uint8_t*)par->extradata != 1)
- - if ((ret = ff_avc_parse_nal_units_buf(pkt->data, &data, &size)) < 0)
- - return ret;
- + if(par->codec_id == AV_CODEC_ID_HEVC)
- + {
- + if ((ret = ff_hevc_annexb2mp4_buf(pkt->data, &data, &size,0,NULL)) < 0)
- + return ret;
- + }
- + else
- + {
- + if ((ret = ff_avc_parse_nal_units_buf(pkt->data, &data, &size)) < 0)
- + return ret;
- + }
- +
- } else if (par->codec_id == AV_CODEC_ID_AAC && pkt->size > 2 &&
- (AV_RB16(pkt->data) & 0xfff0) == 0xfff0) {
- if (!s->streams[pkt->stream_index]->nb_frames) {
- @@ -991,7 +1010,7 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt)
- (FFALIGN(par->height, 16) - par->height));
- } else if (par->codec_id == AV_CODEC_ID_AAC)
- avio_w8(pb, 1); // AAC raw
- - else if (par->codec_id == AV_CODEC_ID_H264 || par->codec_id == AV_CODEC_ID_MPEG4) {
- + else if (par->codec_id == AV_CODEC_ID_H264 || par->codec_id == AV_CODEC_ID_HEVC || par->codec_id == AV_CODEC_ID_MPEG4) {
- avio_w8(pb, 1); // AVC NALU
- avio_wb24(pb, pkt->pts - pkt->dts);
- }
6、编译ffmpeg
cd FFmpeg-release-5.0/
./configure --enable-shared --enable-static --enable-debug --enable-libx264 --enable-libx265 --enable-libmp3lame --enable-gpl --disable-optimizations --disable-stripping --enable-libfreetype --enable-version3 --extra-cflags=-I../out/usr/local/include --extra-ldflags=-L../out/usr/local/lib
make -j8
make DESTDIR=../out install
当执行./configure时遇到ERROR: x265 not found using pkg-config这个错误时，先执行下：
sudo apt install pkg-config
如已安装，还会提示，执行export
export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:`pwd`/../out/usr/local/lib/pkgconfig
`pwd`/../out/usr/local/lib/pkgconfig 不行，就用自己的绝对路径
7、验证
cd out/usr/local
export LD_LIBRARY_PATH='pwd'/lib:$LD_LIBRARY_PATH
./bin/ffmpeg -i 1.mp4 -c:v libx265 -f flv 1.flv
用./bin/ffprobe -i 1.flv 查看是否成功
./bin/ffmpeg -i 1.flv -c:v libx264 2.mp4
成功
8、测试rtmp推流
下载安装支持h265的rtmp推流服务 pingos ，此平台个人觉得不好，有空可以试试修改srs
./bin/ffmpeg -re -stream_loop -1 -i 1.mp4 -c:v hevc_nvenc -f flv rtmp://192.168.0.15/live/t33
./bin/ffmpeg -c:v hevc_cuvid -i rtmp://192.168.0.15/live/t33 -c:v h264_nvenc -f flv rtmp://192.168.0.15/live/t35
这样就可以用vlc播放rtmp://192.168.0.15/live/t35。
感谢博主：染尘111
参考了他的博文：
ffmpeg编译支持h265的rtmp windown版本_染尘111的博客-CSDN博客_ffmpeg支持h265编解码版本