DM8168,分辨率问题

DM8168，用的是dvrrdk4.01，数据从网络摄像头进来。分辨率是1600*1200，不知道8168支不支持这种不是很常规的分辨率的配置，如果支持的话该怎么配置呢？请各位帮帮忙，多谢！

Chris Meng：

Chu Hi，

网络摄像头进来，就是通过网络输入DM8168。DM8168解码是支持1600×1200的分辨率，需要修改最大支持的输入高度大于1200.

hl chu：

回复 Chris Meng:

Chris Hi，

感谢您的回复，请问应该在哪里改呢，还有2048*1536的分辨率。

Chris Meng：

回复 hl chu:

你好，

本地解码的例子应该是可以支持大于1920×1080的码流的。请问你是否有尝试过？

hl chu：

回复 Chris Meng:

Chris Hi，

感谢您的回复，我试了本地的解码例子，分辨率是1600*1200，播放不了。接收数据的线程里有组合I帧的部分：

// If I frame is recieved in multiple packets we need to accumulate them into one buffer – First packet                    if(pObj->gIPNC_info->readVidBuf[pObj->gIPNC_info->rVBTail] == 0x67 && pObj->gIPNC_info->readSizeV < 200)                    {                        printf("\nGot a frame in multiple packets-Start\n");                        tmpSize += pObj->gIPNC_info->readSizeV;                        pObj->gIPNC_info->rVBTail = pObj->gIPNC_info->readSizeV;                        if(pObj->codecType == VCODEC_TYPE_H264)                        {                         pObj->gIPNC_info->readVidBuf[pObj->gIPNC_info->rVBTail+0]    = 0x00;                         pObj->gIPNC_info->readVidBuf[pObj->gIPNC_info->rVBTail+1]    = 0x00;                         pObj->gIPNC_info->readVidBuf[pObj->gIPNC_info->rVBTail+2]    = 0x00;                         pObj->gIPNC_info->readVidBuf[pObj->gIPNC_info->rVBTail+3]    = 0x01;                         pObj->gIPNC_info->rVBTail += 4;                         tmpSize += 4;                         pObj->gIPNC_info->readVidBuf += pObj->gIPNC_info->rVBTail;                        }                        continue;                    }                    // If I frame is recieved in multiple packets we need to accumulate them into one buffer – Middle packet                    if(tmpSize > 0 && pObj->gIPNC_info->readVidBuf[0] == 0x68)                    {                        printf("\nGot a frame in multiple packets-middle\n");                        tmpSize += pObj->gIPNC_info->readSizeV;                        pObj->gIPNC_info->rVBTail = pObj->gIPNC_info->readSizeV;                        if(pObj->codecType == VCODEC_TYPE_H264)                        {                         pObj->gIPNC_info->readVidBuf[pObj->gIPNC_info->rVBTail+0]    = 0x00;                         pObj->gIPNC_info->readVidBuf[pObj->gIPNC_info->rVBTail+1]    = 0x00;                         pObj->gIPNC_info->readVidBuf[pObj->gIPNC_info->rVBTail+2]    = 0x00;                         pObj->gIPNC_info->readVidBuf[pObj->gIPNC_info->rVBTail+3]    = 0x01;                         pObj->gIPNC_info->rVBTail += 4;                         tmpSize += 4;                         pObj->gIPNC_info->readVidBuf += pObj->gIPNC_info->rVBTail;                        }                        continue;                    }                    // If I frame is recieved in multiple packets we need to accumulate them into one buffer – Last packet                    if(tmpSize > 0 && pObj->gIPNC_info->readVidBuf[pObj->gIPNC_info->rVBTail] == 0x65)                    {                        printf("\nGot a frame in multiple packets-End\n");                        pObj->gIPNC_info->readSizeV += tmpSize;                        tmpSize = 0;  //Reset this for next frame that comes in multiple packets                    }

一直打印Got a frame in multiple packets-Start和Got a frame in multiple packets-middle，没有Got a frame in multiple packets-End，I帧接收不完整，请问这会是什么原因导致的？

hl chu：

回复 hl chu:

如果数据源是1600*1200，是不是要在分辨率相关的地方增加匹配当前分辨率的部分，例如用到VSYS_STD_1080P_60，DC_MODE_1080P_60，FVID2_STD_1080P_60的地方。

Chris Meng：

回复 hl chu:

Chu Hi，

抱歉，我测试的是dec+display的demo，你的错误是在接收网络码流部分。

hl chu：

回复 Chris Meng:

Chris Hi，

感谢您的回复，如果用1920*1080的摄像头，能接收到packets-End，换1600*1200或者1024*1024的不行。接收网络码流的代码是RDK的，我只改了初始化时的长宽，为什么接收会有问题呢？

Chris Meng：

回复 hl chu:

Chu Hi，

网络接收侧的代码我不是很熟悉，建议你加些打印，调试一下。

hl chu：

回复 Chris Meng:

Chris Hi，

感谢您的回复，能不能让您熟悉这一块的同事也帮忙测试一下，我们的四路视频分辨率都不一样：

1920*1080,1024*1024,1600*1200,2048*1536，多谢！

hl chu：

回复 hl chu:

从1600*1200的摄像头都到的数据是：

前面一堆5577那种数据，这种数据不对吧，收不到I帧