使用opencv构建自定义ffmpeg4.1时出错

我正在尝试构建4.1版的定制ffmpeg。正如我们所知，ffmpeg4.1需要libavcodec.so.58和其他相关库（最新）。我的代码中有一些与opencv相关的函数，比如cvLoadImage和其他。我更新了libopencv highgui dev、libopencv_core-dev和libopencv_imgproc-dev库。当我运行makefile时，我得到了以下错误：

/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_free_packet@LIBAVCODEC_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_write_frame@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_frame_alloc@LIBAVUTIL_55'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avformat_free_context@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avformat_write_header@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_rescale_q@LIBAVUTIL_55'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_write_trailer@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `sws_getCachedContext@LIBSWSCALE_4'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avcodec_find_encoder@LIBAVCODEC_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_free@LIBAVUTIL_55'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avcodec_encode_video2@LIBAVCODEC_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_seek_frame@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_lockmgr_register@LIBAVCODEC_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avcodec_decode_video2@LIBAVCODEC_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avcodec_open2@LIBAVCODEC_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_malloc@LIBAVUTIL_55'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avio_close@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_init_packet@LIBAVCODEC_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_log_set_level@LIBAVUTIL_55'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avpicture_get_size@LIBAVCODEC_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avformat_get_riff_video_tags@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avformat_close_input@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avpicture_fill@LIBAVCODEC_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avformat_network_init@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avformat_find_stream_info@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avcodec_close@LIBAVCODEC_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_guess_codec@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avio_open@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_guess_format@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avformat_open_input@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_register_all@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `sws_getContext@LIBSWSCALE_4'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avformat_new_stream@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_frame_free@LIBAVUTIL_55'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_sub_q@LIBAVUTIL_55'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_freep@LIBAVUTIL_55'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avcodec_find_decoder@LIBAVCODEC_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `sws_freeContext@LIBSWSCALE_4'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `sws_scale@LIBSWSCALE_4'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avformat_alloc_context@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_read_frame@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_codec_get_id@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avcodec_flush_buffers@LIBAVCODEC_57'
collect2: error: ld returned 1 exit status
make: *** [new-ffmpeg] Error 1

我已经清楚地链接了最新的库，并将它们包含在我的makefile中。错误列表提示我，libopencv-highgui.so指向libavcodec.57版本api。opencv是否未升级为支持libavXX.so.58 libs？还是我做错了什么

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请帮助我，否则任何建议都会有所帮助。

您的opencv安装可能有问题。请参阅此问题。

在提供的日志中，它显然在查找libavcodec_57。如果不知道您是如何构建OpenCV的，很难说。提供的错误与“API”无关，而是它试图链接的库和引用。@Kamiccolo感谢您的回复，那么构建自定义ffmpeg的解决方案是什么呢？我们什么都不能做吗？我们可以将这个libopencv_highgui库链接到libav吗？或者我需要用libav更新的库编译和构建libopencv_highgui的二进制文件吗？可能吗？您使用的是什么操作系统/版本？@Manthan Tilva我使用的是Debian Stretch，64位。您使用的OpenCV版本是什么？我遵循了您建议的过程，但出现了以下错误，/usr/bin/ld:warning:libavcodec.so.57，由/usr/lib/x86\u 64-linux-gnu/libopencv\u highgui.so所需，可能与libavcodec.so.58/usr/bin/ld冲突：警告：libavformat.so.57，由/usr/lib/x86_64-linux-gnu/libopencv_highgui.so所需，可能与libavformat.so.58/usr/bin/ld冲突：警告：libavutil.so.55，由/usr/lib/x86_64-linux-gnu/libopencv_highgui.so所需，可能与libavutil.so.56/usr/bin/ld冲突：警告：libswscale.so.4，/usr/lib/x86_64-linux-gnu/libopencv_highgui.so所需的，可能与libswscale.so.5冲突。参见此