参考如下：
CMBlockBufferRef blockBufferRef = CMSampleBufferGetDataBuffer(sampleBuffer);
size_t length = CMBlockBufferGetDataLength(blockBufferRef);
Byte buffer[length];
CMBlockBufferCopyDataBytes(blockBufferRef, 0, length, buffer);
NSData *data = [NSData dataWithBytes:buffer length:length];
内容全部来源于网络收集，如有侵权，请联系网站删除：QQ：24596024