ICode9
精准搜索请尝试： 精确搜索
首页
编程语言>
数据库
系统相关
互联网
其他分享
Python
Java
JavaScript
android
PHP
首页 > 其他分享> 文章详细

ffmpeg 播放H265视频流

2021-01-15 17:05:44  阅读：401  来源： 互联网

标签：par ffmpeg CODEC H265 视频流 id codec AV ID


  • 参考下面两篇blog ，终于在ubuntu20.10上实现了 ffplay 拉flv流的功能，感谢博主。

            https://blog.csdn.net/smallhujiu/article/details/81703434

            https://www.pianshen.com/article/26551860041/

 

  •  实现的diff文件

diff --git a/libavformat/flv.h b/libavformat/flv.h

index 3571b90279..e790c44d74 100644
--- a/libavformat/flv.h
+++ b/libavformat/flv.h
@@ -110,6 +110,8 @@ enum {
     FLV_CODECID_H264    = 7,
     FLV_CODECID_REALH263= 8,
     FLV_CODECID_MPEG4   = 9,
+    FLV_CODECID_HEVC   = 12,
+    //增加一个类型12，rtmp协议不支持HEVC，所以需要自己添加一个解码ID，国内普遍使用12作为HEVC的ID
 };
 
 enum {
diff --git a/libavformat/flvdec.c b/libavformat/flvdec.c
index ad6e7a3ca5..8a161bd477 100644
--- a/libavformat/flvdec.c
+++ b/libavformat/flvdec.c
@@ -36,6 +36,7 @@
 #include "internal.h"
 #include "avio_internal.h"
 #include "flv.h"
+#include "hevc.h"
 
 #define VALIDATE_INDEX_TS_THRESH 2500
 
@@ -318,6 +319,8 @@ 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 +370,11 @@ static int flv_set_video_codec(AVFormatContext *s, AVStream *vstream,
         par->codec_id = AV_CODEC_ID_MPEG4;
         ret = 3;
         break;
+    case FLV_CODECID_HEVC:
+        par->codec_id = AV_CODEC_ID_HEVC;
+        vstream->need_parsing = AVSTREAM_PARSE_HEADERS;
+        ret = 3;     // not 4, reading packet type will consume one byte
+        break;
     default:
         avpriv_request_sample(s, "Video codec (%x)", flv_codecid);
         par->codec_tag = flv_codecid;
@@ -1219,7 +1227,8 @@ 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_MPEG4) {
+        st->codecpar->codec_id == AV_CODEC_ID_HEVC ||
+        st->codecpar->codec_id == AV_CODEC_ID_MPEG4 ) {
         int type = avio_r8(s->pb);
         size--;
 
@@ -1228,7 +1237,8 @@ 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_MPEG4 ||
+                st->codecpar->codec_id == AV_CODEC_ID_HEVC)  {
             // sign extension
             int32_t cts = (avio_rb24(s->pb) + 0xff800000) ^ 0xff800000;
             pts = dts + cts;
@@ -1244,7 +1254,7 @@ 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) {
diff --git a/libavformat/flvenc.c b/libavformat/flvenc.c
index 1cfcdc6392..d6babd8833 100644
--- a/libavformat/flvenc.c
+++ b/libavformat/flvenc.c
@@ -34,6 +34,7 @@
 #include "libavutil/opt.h"
 #include "libavcodec/put_bits.h"
 #include "libavcodec/aacenctab.h"
+#include "hevc.h"
 
 
 static const AVCodecTag flv_video_codec_ids[] = {
@@ -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 }
 };
 
@@ -491,7 +493,7 @@ static void flv_write_codec_header(AVFormatContext* s, AVCodecParameters* par, i
     FLVContext *flv = s->priv_data;
 
     if (par->codec_id == AV_CODEC_ID_AAC || par->codec_id == AV_CODEC_ID_H264
-            || par->codec_id == AV_CODEC_ID_MPEG4) {
+            || par->codec_id == AV_CODEC_ID_MPEG4 || par->codec_id == AV_CODEC_ID_HEVC) {
         int64_t pos;
         avio_w8(pb,
                 par->codec_type == AVMEDIA_TYPE_VIDEO ?
@@ -537,7 +539,12 @@ 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);
@@ -844,7 +851,7 @@ 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_MPEG4 || par->codec_id == AV_CODEC_ID_HEVC))
                 put_avc_eos_tag(pb, sc->last_ts);
         }
     }
@@ -893,22 +900,38 @@ 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)
+        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_MPEG4 ||
+            par->codec_id ==AV_CODEC_ID_HEVC ) {
         flags_size = 5;
-    else
+    } else {
         flags_size = 1;
+    }
 
     if (par->codec_id == AV_CODEC_ID_AAC || par->codec_id == AV_CODEC_ID_H264
-            || par->codec_id == AV_CODEC_ID_MPEG4) {
-        int side_size;
+            || par->codec_id == AV_CODEC_ID_MPEG4 || par->codec_id == AV_CODEC_ID_HEVC) {
+        int side_size = 0;
         uint8_t *side = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, &side_size);
+        //if (side && side_size > 0 && (side_size != par->extradata_size || memcmp(side, par->extradata, side_size))) {
+        //      ret = ff_alloc_extradata(par, side_size);
+        //      if (ret < 0)
+        //          return ret;
+        //      memcpy(par->extradata, side, side_size);
+        //     flv_write_codec_header(s, par, pkt->dts);
+        //}
+
         if (side && side_size > 0 && (side_size != par->extradata_size || memcmp(side, par->extradata, side_size))) {
-            ret = ff_alloc_extradata(par, side_size);
-            if (ret < 0)
-                return ret;
+            av_free(par->extradata);
+            par->extradata = av_mallocz(side_size + AV_INPUT_BUFFER_PADDING_SIZE);
+            if (!par->extradata) {
+                par->extradata_size = 0;
+                return AVERROR(ENOMEM);
+            }
             memcpy(par->extradata, side, side_size);
+            par->extradata_size = side_size;
+            flv_write_codec_header(s, par, pkt->dts);
+        } else {
             flv_write_codec_header(s, par, pkt->dts);
         }
     }
@@ -966,8 +989,12 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt)
         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;
+    } else if (par->codec_id == AV_CODEC_ID_HEVC) {
+        if (par->extradata_size > 0 && *(uint8_t*)par->extradata != 1)
+            if ((ret = ff_hevc_annexb2mp4_buf(pkt->data, &data, &size, 0, NULL)) < 0)
+                return ret;
     } else if (par->codec_id == AV_CODEC_ID_AAC && pkt->size > 2 &&
-               (AV_RB16(pkt->data) & 0xfff0) == 0xfff0) {
+            (AV_RB16(pkt->data) & 0xfff0) == 0xfff0) {
         if (!s->streams[pkt->stream_index]->nb_frames) {
             av_log(s, AV_LOG_ERROR, "Malformed AAC bitstream detected: "
                    "use the audio bitstream filter 'aac_adtstoasc' to fix it "
@@ -1036,9 +1063,9 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt)
             else
                 avio_w8(pb, ((FFALIGN(par->width,  16) - par->width) << 4) |
                              (FFALIGN(par->height, 16) - par->height));
-        } else if (par->codec_id == AV_CODEC_ID_AAC)
+        } 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_MPEG4 || par->codec_id == AV_CODEC_ID_HEVC) {
             avio_w8(pb, 1); // AVC NALU
             avio_wb24(pb, pkt->pts - pkt->dts);
         }

 

  • 编译脚本

./configure --prefix=/usr/local/ffmpeg  --enable-shared --disable-static --enable-ffplay --enable-sdl --enable-pic --enable-gpl --enable-version3 --enable-nonfree --enable-libx264  --enable-libx265 --enable-libmp3lame --enable-libfdk_aac --disable-doc

 

  • 需要注意

ldd 看看 ffplay 的动态链接库，使得链接到/usr/local/ffmpeg/lib 目录下的库文件。

标签：par,ffmpeg,CODEC,H265,视频流,id,codec,AV,ID
来源： https://blog.csdn.net/Harrison_zhu/article/details/112676407

本站声明： 1. iCode9 技术分享网（下文简称本站）提供的所有内容，仅供技术学习、探讨和分享；
2. 关于本站的所有留言、评论、转载及引用，纯属内容发起人的个人观点，与本站观点和立场无关；
3. 关于本站的所有言论和文字，纯属内容发起人的个人观点，与本站观点和立场无关；
4. 本站文章均是网友提供，不完全保证技术分享内容的完整性、准确性、时效性、风险性和版权归属；如您发现该文章侵犯了您的权益，可联系我们第一时间进行删除；
5. 本站为非盈利性的个人网站，所有内容不会用来进行牟利，也不会利用任何形式的广告来间接获益，纯粹是为了广大技术爱好者提供技术内容和技术思想的分享性交流网站。

关于我们 | 联系我们 | 留言反馈

专注分享技术，共同学习，共同进步。侵权联系[81616952@qq.com]

Copyright (C)ICode9.com, All Rights Reserved.

ICode9版权所有