// copy timebase while removing common factors
ost->st->time_base = av_add_q(ost->enc_ctx->time_base, (AVRational){0, 1});
ost->st->codec->codec= ost->enc_ctx->codec;
- } else {
+ } else if (ost->stream_copy) {
ret = av_opt_set_dict(ost->st->codec, &ost->encoder_opts);
if (ret < 0) {
av_log(NULL, AV_LOG_FATAL,