av_freep(&ifilter->name);
DESCRIBE_FILTER_LINK(ifilter, in, 1);
+ if (!ifilter->ist->dec) {
+ av_log(NULL, AV_LOG_ERROR,
+ "No decoder for stream #%d:%d, filtering impossible\n",
+ ifilter->ist->file_index, ifilter->ist->st->index);
+ return AVERROR_DECODER_NOT_FOUND;
+ }
switch (avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx)) {
case AVMEDIA_TYPE_VIDEO: return configure_input_video_filter(fg, ifilter, in);
case AVMEDIA_TYPE_AUDIO: return configure_input_audio_filter(fg, ifilter, in);