ffmpeg is deprecating the following constructions we use in this package: ```text bob/io/video/cpp/utils.cpp:1181:26: warning: 'coded_frame' is deprecated [-Wdeprecated-declarations] if (stream->codec->coded_frame->key_frame) pkt->flags |= AV_PKT_FLAG_KEY; ^ /Users/andre/conda/envs/bob-devel-py27/include/libavcodec/avcodec.h:3024:35: note: 'coded_frame' has been explicitly marked deprecated here attribute_deprecated AVFrame *coded_frame; ^ bob/io/video/cpp/utils.cpp:1308:26: warning: 'coded_frame' is deprecated [-Wdeprecated-declarations] if (stream->codec->coded_frame && stream->codec->coded_frame->key_frame) ^ /Users/andre/conda/envs/bob-devel-py27/include/libavcodec/avcodec.h:3024:35: note: 'coded_frame' has been explicitly marked deprecated here attribute_deprecated AVFrame *coded_frame; ^ bob/io/video/cpp/utils.cpp:1308:56: warning: 'coded_frame' is deprecated [-Wdeprecated-declarations] if (stream->codec->coded_frame && stream->codec->coded_frame->key_frame) ^ /Users/andre/conda/envs/bob-devel-py27/include/libavcodec/avcodec.h:3024:35: note: 'coded_frame' has been explicitly marked deprecated here attribute_deprecated AVFrame *coded_frame; ^ 3 warnings generated. ```