看来您正在尝试阅读 AV_PIX_FMT_YUVJXXXP 不建议使用的框架（请参阅 libav doc ） 。您可以使用此解决方法来管理它：

It seems you're trying to read AV_PIX_FMT_YUVJXXXP frames which are deprecated (see the libav doc). You can use this workaround to manage it :

AVPixelFormat pixFormat;
switch (_videoStream->codec->pix_fmt) {
case AV_PIX_FMT_YUVJ420P :
    pixFormat = AV_PIX_FMT_YUV420P;
    break;
case AV_PIX_FMT_YUVJ422P  :
    pixFormat = AV_PIX_FMT_YUV422P;
    break;
case AV_PIX_FMT_YUVJ444P   :
    pixFormat = AV_PIX_FMT_YUV444P;
    break;
case AV_PIX_FMT_YUVJ440P :
    pixFormat = AV_PIX_FMT_YUV440P;
default:
    pixFormat = _videoStream->codec->codec->pix_fmts;
    break;
}