在进行初始化等工作之后调用avcodec_decode_video，返回值是正确的整型数据，填入的buff和size都是正确的，而第二个参数AVFrame*指向的data和linesize都是空(错误的指针)?求指教。

When you want to decode, encode, transcode, mix, demix, stream, filter, and play, then FFmpeg is probably the best tool for the job, and it’s available for Windows 10 as a free download. However, it ...

Dolby’s AC-3 and E-AC-3 surround technology delivers high-quality digital audio for up to 7.1 discrete channels. These technologies are the de facto standard for HDTV broadcast channels, IPTV ...