FFmpeg 被声明为已否决 deprecated（2018 精）

深碍√TFBOYSˉ_ 2023-08-17 15:15 134阅读 0赞

不用再取消SDL检查，不用再添加\#pragma warning(disable :4996)，下面才是正确的解决方法！！

以下是一些常见的deprecated问题，遇到下述没有列出的问题，可以打开相应的头文件，在里面搜索ctrl+F，会有英文说明的，如下：

![70][]

PIX\_FMT\_YUV420P -> AV\_PIX\_FMT\_YUV420P  
  
  
'AVStream::codec': 被声明为已否决:  
if(pFormatCtx->streams\[i\]->codec->codec\_type==AVMEDIA\_TYPE\_VIDEO)\{  
=>  
if(pFormatCtx->streams\[i\]->codecpar->codec\_type==AVMEDIA\_TYPE\_VIDEO)\{  
  
  
'AVStream::codec': 被声明为已否决:  
pCodecCtx = pFormatCtx->streams\[videoindex\]->codec;  
=>  
pCodecCtx = avcodec\_alloc\_context3(NULL);  
avcodec\_parameters\_to\_context(pCodecCtx, pFormatCtx->streams\[videoindex\]->codecpar);  
  
  
'avpicture\_get\_size': 被声明为已否决:  
avpicture\_get\_size(AV\_PIX\_FMT\_YUV420P, pCodecCtx->width, pCodecCtx->height)  
=>  
\#include "libavutil/imgutils.h"  
av\_image\_get\_buffer\_size(AV\_PIX\_FMT\_YUV420P, pCodecCtx->width, pCodecCtx->height, 1)  
  
  
'avpicture\_fill': 被声明为已否决:  
avpicture\_fill((AVPicture \*)pFrameYUV, out\_buffer, AV\_PIX\_FMT\_YUV420P, pCodecCtx->width, pCodecCtx->height);  
=>  
av\_image\_fill\_arrays(pFrameYUV->data, pFrameYUV->linesize, out\_buffer, AV\_PIX\_FMT\_YUV420P, pCodecCtx->width, pCodecCtx->height, 1);  
  
  
'avcodec\_decode\_video2': 被声明为已否决:  
ret = avcodec\_decode\_video2(pCodecCtx, pFrame, &got\_picture, packet); //got\_picture\_ptr Zero if no frame could be decompressed  
=>  
ret = avcodec\_send\_packet(pCodecCtx, packet);  
got\_picture = avcodec\_receive\_frame(pCodecCtx, pFrame); //got\_picture = 0 success, a frame was returned  
//注意：got\_picture含义相反  
或者：

int ret = avcodec\_send\_packet(aCodecCtx, &pkt);  
if (ret != 0)  
\{  
prinitf("%s/n","error");  
return;  
\}  
while( avcodec\_receive\_frame(aCodecCtx, &frame) == 0)\{  
//读取到一帧音频或者视频  
//处理解码后音视频 frame  
\}  
  
'av\_free\_packet': 被声明为已否决:  
av\_free\_packet(packet);  
=>  
av\_packet\_unref(packet);

avcodec\_decode\_audio4：被声明为已否决：

int ret = avcodec\_send\_packet(aCodecCtx, &pkt);  
if (ret != 0)\{prinitf("%s/n","error");\}  
while( avcodec\_receive\_frame(aCodecCtx, &frame) == 0)\{  
//读取到一帧音频或者视频  
//处理解码后音视频 frame  
\}

转载于:https://www.cnblogs.com/jiu0821/p/11406029.html

[70]: /images/20230810/a71fd269ce0b4143981facb25b5083e1.png