Thank you.
I also see a number of "deprecated API" message that makes sense to look at as well:
rate_lavcrate.c:70:3: warning: 'av_resample_close' is deprecated [-Wdeprecated-declarations] av_resample_close(rate->context); ^ In file included from rate_lavcrate.c:22:0: /usr/include/libavcodec/avcodec.h:4854:6: note: declared here void av_resample_close(struct AVResampleContext *c); ^ rate_lavcrate.c: In function 'pcm_src_init': rate_lavcrate.c:96:3: warning: 'av_resample_init' is deprecated [-Wdeprecated-declarations] rate->context = av_resample_init(info->out.rate, info->in.rate, ^ In file included from rate_lavcrate.c:22:0: /usr/include/libavcodec/avcodec.h:4824:27: note: declared here struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff); ^ rate_lavcrate.c: In function 'pcm_src_convert_s16': rate_lavcrate.c:186:3: warning: 'av_resample' is deprecated [-Wdeprecated-declarations] ret = av_resample(rate->context, rate->out[i], ^ In file included from rate_lavcrate.c:22:0: /usr/include/libavcodec/avcodec.h:4836:5: note: declared here int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx); ^ rate_lavcrate.c:194:2: warning: 'av_resample_compensate' is deprecated [-Wdeprecated-declarations] av_resample_compensate(rate->context, ^ In file included from rate_lavcrate.c:22:0: /usr/include/libavcodec/avcodec.h:4852:6: note: declared here void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance); ^