SILENCE_COPY      151 libavfilter/af_silenceremove.c         s->mode = SILENCE_COPY;
SILENCE_COPY      272 libavfilter/af_silenceremove.c             s->mode = SILENCE_COPY;
SILENCE_COPY      277 libavfilter/af_silenceremove.c     case SILENCE_COPY:
SILENCE_COPY      374 libavfilter/af_silenceremove.c             s->mode = SILENCE_COPY;
SILENCE_COPY      396 libavfilter/af_silenceremove.c                                s->mode == SILENCE_COPY)) {