AVERROR(EAGAIN):表示解码器当前无法处理更多的数据包,调用者应该稍后再试。 AVERROR_EOF:表示没有更多的数据包可以发送给解码器,这通常发生在流的末尾。 AVERROR(EINVAL):表示提供的参数无效,例如,如果提供的 AVCodecContext 未正确初始化或配置。 其他负值:表示发生了错误,具体的错误码可以参考 FFmpeg 的文档或错误...
* @return 0 on success, otherwise negative error code: * AVERROR(EAGAIN): input is not accepted right now - the packet must be * resent after trying to read output * AVERROR_EOF: the decoder has been flushed, and no new packets can * be sent to it (also returned if more than 1 ...
}/*read all the output frames (in general there may be any number of them*/while(ret >=0) { ret=avcodec_receive_frame(dec_ctx, frame);if(ret == AVERROR(EAGAIN) || ret ==AVERROR_EOF)return;elseif(ret <0) { fprintf(stderr,"Error during decoding\n"); exit(1); }//采样位数 ...
receive EAGAIN:receive_frame返回值为EAGAIN,未能输出frame,需要输入更多的packet才能输出当前frame。 receive EOF :receive_frame返回值为EOF,当处于send EOF状态后,调用一次或者多次receive_frame后就能得到该状态,表示所有的帧已经被输出。 解码帧全部接收完成会返回EOF这时需要调用 avcodec_flush_buffers(input->acc);...
* AVERROR(EAGAIN): input is not accepted in the current state - user * must read output with avcodec_receive_frame() (once * all output is read, the packet should be resent, and * the call will not fail with EAGAIN). * AVERROR_EOF: the decoder has been flushed, and no new pack...
AVERROR(EAGAIN):由于解码器内部缓存已满,送入的packet未被接收,需要avcodec_receive_frame()读取掉一些已经解码的音视频帧后,才能继续送入。 AVERROR(EOF):当send_packet送入为NULL时才会触发该状态,通知解码器输入packet已结束,后续不再送入packet。
* AVERROR(EAGAIN): input is not accepted right now - the packet must be * resent after trying to read output * AVERROR_EOF: the decoder has been flushed, and no new packets can * be sent to it (also returned if more than 1 flush ...
在优化视频客观全参考算法（主要是PSNR, SSIM, MS-SSIM）时，我们首先利用FFmpeg提供的API（avcodec_sen...
* AVERROR(EAGAIN): input is not accepted right now - the packet must be * resent after trying to read output * AVERROR_EOF: the decoder has been flushed, and no new packets can * be sent to it (also returned if more than 1 flush ...
AVERROR(EAGAIN):当前状态不接受输入,用户必须调用avcodec_receive_frame()函数把数据帧读取完(一旦所有的输出数据被读取,该packet数据可以被重新发送,并且函数调用返回值不会是EAGAGIN)。说白了E-AGAIN e-again 读完,再试者发一次呗。。。 AVERROR_EOF:解码器已经刷新了,不能再往解码器发送新的数据包(如果发送超...