ffmpeg 4.2.1版本,样例代码 transcoding.c 转码后帧率减半bug

av_packet_rescale_ts(&packet,ifmt_ctx->streams[stream_index]->time_base,stream_ctx[stream_index].dec_ctx->time_base);

 

后面的参数stream_ctx[stream_index].dec_ctx->time_base时间基准错误，应该赋予帧率的值，假如转码后为25帧，修改如下

stream_ctx[stream_index].dec_ctx->time_base.num = 1;
stream_ctx[stream_index].dec_ctx->time_base.den = 25;
av_packet_rescale_ts(&packet,ifmt_ctx->streams[stream_index]->time_base,stream_ctx[stream_index].dec_ctx->time_base);