Herman Chen

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I use mpp to decode the video file hard and find that the decoding delay is relatively large. Please see the attachment for the video and log.

加上 IMEDIATE_OUT 的 control

I use mpp to decode the video file hard and find that the decoding delay is relatively large. Please see the attachment for the video and log.

这个也要看片源，有一片源的显示序和解码序差别就是很大的

I use mpp to decode the video file hard and find that the decoding delay is relatively large. Please see the attachment for the video and log.

整个 U32 变量为 1，把这个变量地址送进去

I use mpp to decode the video file hard and find that the decoding delay is relatively large. Please see the attachment for the video and log.

片源里有没有 B 帧？还是只有 I 帧和 P 帧？

I use mpp to decode the video file hard and find that the decoding delay is relatively large. Please see the attachment for the video and log.

有 B 帧就很难保证时延了，解码序和显示端不一致，时延就会不断波动

buffer full writing ..to decoder

给下完整log，用的mpi_dec_test么

我在编码H264时，只有第一个IDR帧

mpp_enc_proc_cfg 里面在 MPP_ENC_SEI_MODE_ONE_FRAME 和 MPP_ENC_HEADER_MODE_EACH_IDR 处理的位置加点打印看看

Rk3399解码JPEG失败

3399 用的是 4.4 的内核么？如果可以的话，升级内核到 4.19 会好一些 4.4 内核的兼容性可能有问题，需要分析下内核版本

RV1108 20201029_1.4.4 SDK USB camera mjpeg preview decode Error

可能 USB 传输的数据有问题，码率高了会丢？保存一下输入数据，用ffmpeg解码看看有没有问题。

1920*1080大小输入图像帧拷贝到mpp frame buffer占用CPU高

profile 看一下 cpu 占用是占用在哪里比较好