Choppy streaming from NAS and AppleTV3

Hi all,
I am looking to get some advice on something that is driving me a bit nuts - the setup is: Apple TV3, NetGear ReadyNasDUO 256mb, iTunes running on Windows 8.1 Corei5 16GB RAM everything is wired over gig ethernet via Linksys SE2800 (NAS and PC) and SE2500 (Apple TV). I also have the smart TV wired into the SE2500 switch to stream non iTunes films.
For the most part everything works fairly well, however when watching iTunes films both standard and HD films will clip every 10-15 seconds HD slightly more noticeable, I am not talking major clipping its minor but enough to draw your attention to it and become a distraction.
I am struggling to find the culprit, is it an AppleTV issue or something with the iTunes streaming or the way its interacting with the NAS, the reason of focus towards iTunes and Apple TV is that if I stream a 1080p film over the same infrastructure from the same NAS to the Panasonic Viera TV it runs perfectly.
I am not 100% sure how the interaction of the PC running iTunes/AppleTV and NAS work so wanted to get some thoughts on this, is the NAS the problem or just the way appleTV works with the PC, does iTunes have much to play in the streaming process when its running?
I would really like to understand if anyone else has a setup similar and what recommendations they have and types of NAS drives people think are the best, I was looking at Synology NAS drives which seem to get rave reviews but aren't cheap and before changing NAS I wanted to see if that is the problem, the NAS speeds on the network test for a 30mb file around: 158mbps write / 421mbps read.
Any thoughts would be much appreciated...

Welcome to the Apple Community.
What do you mean by clip.

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Can apple tv stream from nas?

I have a Netgear ReadyNas Duo. With all my media from ITunes and the Firefly-Mediaserver is working on it. Can Apple-TV stream this content from my NAS without an working PC?
Thanks for your answers.
Greets René

I will copy and paste what I find out, hope it helps you.
I have an Airport Extreme, but it works with other routers as well. Find out what communication standard your router supports. DLNA or SMB.
The Airport Extreme I use does not support the DLNA standards which most external drives like LaCie Fule or DW My Cloud use. I found out it supports the SMB standard though. So a quick search on the App Store with SMB as the keyword showed up a few file managment apps and the first I tried worked!
It's called FileExplorer Free and can access files on your external drive attached to your Airport Extreme. There were more hits but since the first app I found worked I didn't bother to check out the other apps.
I tried FileExplorer with songs first and it worked. You can listen to your songs with your iPhone or iPad or Airplay them to your Airport Express and listen to them at your home audio system. I couldn't hear any loss of quality.
It also works with yorur movies. Just select the movie and watch it on your iDevice or Airplay it to your Apple TV. Works with HD movies as well with no problems. Only downside was that the Apple TV can only display .mp4 files. Even the movies bought on iTunes won't work with the app and the Apple TV. So I had to convert a few movies using the free converter HandBrake.
FileExplorer works with other types of files like photos or documenst too. Oh and as a bonus: The FileExplorer app can also access your library from the DropBox or Google Drive. Works with NAS drives as well. Looks like you need the paid version though for those extras.
In case your router supports DLNA search for a DLNA app like 8player.
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Router speed for streaming from NAS to Windows to Hi-Fi

I've been advised to post this here rather than the iTunes for Windows forum it's turned into an Airplay question.
I have just purchased a Windows 8.1 tablet and one of the main things I want to use it for is to stream music from a NAS to my Airplay enabled Hi-Fi. I haven't got a NAS yet, but have tried pointing it to the iTunes library files and media on my desktop PC. This seems to work once I relocate the files, but when I play them, they play ok through the tablet, but when I switch it to play to my Hi-Fi, it breaks up every few seconds.
I'm wondering if this is because my router is not up to the job or streaming from my desktop to my tablet and then from the tablet to my Hi-Fi?
Wired connection is 100 Mbps, Wireless 54Mbps.

Thanks
I know it’s difficult to do straight comparisons, and they have different OS, but hardware wise this tablet would seem to stack up well against the latest iPads & iPhones, and even better compared to the iOS devices that were released when Airplay was launched. As this protocol is now widely used for HD Video, I would have thought most modern hardware could cope with music.
There are some similar problems discussed in this thread, so I’ll give them a go when I get home:
https://discussions.apple.com/thread/2703198?start=75&tstart=0
These are mostly router tweaks though, I think it’s more to do with the configuration of the tablet and my Laptop & PC seem to be working fine with Airplay.

I use my Apple TV mostly to stream from Netflix, and up until recently it worked perfectly. Now the film freezes ever minute or so and it takes another minute to start up again. This doesn't happen when I stream directly onto my laptop.

I have had an Apple TV for over a year. I use it mainly to stream programs from Netflix, and up until a few months ago, I had no poroblems. Now it has become impossbile to watch a Netflix program on my TV because the film freezes every couple of minutes, or less, and seems to be downloading. It starts again, but the same thing happens in a couple of mnutes more. I have tried pausing the film for a few minutes to let it download, and I have even started a film, and then paused it, half an hour before starting to watch it, hoping that this would allow the entire film, or most of it, to download, but it hasn't helped. I don't have this problem when I download directly from Netflix onto my laptop, but then I don't need Apple TV. Of course, I'd rather watch films on my TV than on my laptop. Any suggestions other than buying a new Apple TV after just over a year?

I also found the following post about a TV interfering with wireless networking:
https://discussions.apple.com/message/17354146#17354146
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Create a continuous data stream from C++, and read it in LabView

Hello all.
I'm working on a project which involves connecting to a motion tracker and reading position and orientation data from it in realtime. The code to get the data is in c++, so I decided that the best way to do this would be to create a c++ DLL file which contains all the necessary functions to first connect to the device and read the data from it, and use the Call Library Function node to feed this data into Labview.
I'm having trouble though, since ideally I would like a continuous stream of data from the c++ code into Labview, and I'm not sure how to achieve this. Putting the call library function node in a while loop seems like an obvious solution, but if I do it this way I would have to reconnect to the device every time I get the data, which is quite a bit too slow.
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Apologies if the question is poorly phrased, many thanks for your help.
Dave
Solved!
Go to Solution.

dr8086 wrote:
This method sounds like an excellent suggestion, but I do have a few questions where I dont think I've understood fully.
From what I understand the basic premise is to use one call library function node to access a DLL which creates an instance of the device object, and passes a pointer too it into labview. Then a seperate call library function node would pass this pointer to another DLL which could access the device object, update it and read the data. This part could be in a while loop and carry on reading the data until a stop command is given.
That's it. I'm including some skeleton code as an example. I'm also including the code because I don't know how much you have experience with multi threading, so I'm showing how you'd have to use critical sections to guard the interactions between threads so that they don't lead to issues.
// exported function to access the devices
extern "C" __declspec(dllexport) int __stdcall init(uintptr_t *ptrOut)
*ptrOut= (uintptr_t)new CDevice();
return 0;
extern "C" __declspec(dllexport) int __stdcall get_data(uintptr_t ptr, double vals[], int size)
return ((CDevice*)ptr)->get_data(vals, size);
extern "C" __declspec(dllexport) int __stdcall close(uintptr_t ptr, double last_vals[], int size)
int r= ((CDevice*)ptr)->close();
((CDevice*)ptr)->get_data(last_vals, size);
delete (CDevice*)ptr;
return r;
// h file
// Represents a device
class CDevice
public:
virtual ~CDevice();
int init();
int get_data(double vals[], int size);
int close();
// only called by new thread
int ThreadProc();
private:
CRITICAL_SECTION rBufferSafe; // Needed for thread saftey
vhtTrackerEmulator *tracker;
HANDLE hThread;
double buffer[500];
int buffer_used;
bool done; // this HAS to be protected by critical section since 2 threads access it. Use a get/set method with critical sections inside
//cpp file
DWORD WINAPI DeviceProc(LPVOID lpParam)
((CDevice*)lpParam)->ThreadProc(); // Call the function to do the work
return 0;
CDevice::~CDevice()
DeleteCriticalSection(&rBufferSafe);
int CDevice::init()
tracker = new vhtTrackerEmulator();
InitializeCriticalSection(&rBufferSafe);
buffer_used= 0;
done= false;
hThread = CreateThread(NULL, 0, DeviceProc, this, 0, NULL); // this thread will now be saving data to an internal buffer
return 0;
int CDevice::get_data(double vals[], int size)
EnterCriticalSection(&rBufferSafe);
if (vals) // provides a way to get the current used buffer size
memcpy(vals, buffer, min(size, buffer_used));
int len= min(size, buffer_used);
buffer_used= 0; // Whatever wasn't read is erased
} else // just return the buffer size
int len= buffer_used;
LeaveCriticalSection(&rBufferSafe);
return len;
int CDevice::close()
done= true;
WaitForSingleObject(hThread, INFINITE); // handle timeouts etc.
delete tracker;
tracker= NULL;
return 0;
int CDevice::ThreadProc()
while (!bdone)
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EnterCriticalSection(&rBufferSafe);
if (buffer_used<500)
buffer[buffer_used++]= tracker->getRawData(0);
LeaveCriticalSection(&rBufferSafe);
Sleep(100);
return 0;
dr8086 wrote:
My main concern is that the object may go out of memory or be deallocated, since it wouldnt be held in any namespace or anything.
Since you create the object with new, the object won't expire until either the dll is unloaded or the process (LabVIEW) closes. So the object will stay valid between dll calls provided LabVIEW didn't unload the dll (which it does if the VIs are closed). When that happens, I'm not exactly sure what happens to live objects (i.e. if you forgot to call close), I imagine the system reclaims the memory but the device might still be open.
What I do to make sure that everything gets closed when the dll unloads before I could call close and delete the object is to everytime I create a new object in the dll I add it to a list, when the dll unloads, if the object is still on the list I delete it.
dr8086 wrote:
I also have a more general programming question about the purpose of the buffer. Would the buffer basically be a big table of position values, which are stored until they can be read into the rest of the VI?
Yes, see the example code.
However, depending on the frequency with which you need to collect data from the device you might not need this buffer at all. I.e. if you collect a sample about every 100ms then you could remove all threading and buffer related functions and instead read the data from the read function itself like this:
double CDevice::get_data()
tracker->update();
return tracker->getRawData(0);
Because you'd only need a buffer and a seperate thread if you collect data at a high frequency and you cannot lose any data.
Matt

Streaming from Nas drive to Hi Fi

I wish to stream music from a Nas drive to my new Naim Hi Fi, what is the best programme for doing so, whilst retaining playlists etc. in i Tunes on my Mac.
What is the best way to transfer my i Tunes library to the Nas drive ? My current library is in Wav format.
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Hi,
I was hoping that someone could assist me.
Our organisation has recently purchased Adobe Media Server Standard to deploy to two Windows 2008 R2 servers (core edition) to stream flash content (video on demand only) which is resident on NAS storage.
I have considerable difficultly in streaming content from NAS and from the literature I have read and the configuration I have done it should be possible.
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Jason
UPDATE: to add further, I have just tested this on a Windows Server 2008 R2 Standard edition with the full UI and I get the exact behaviour/problems as documented above. The issue I am experiencing is not related to the fact I am using the core edition of Windows.

HI,
I have managed to address my issue and get this working!
When reconfiguring the AMS service to use the AD account you MUST also reconfigure the Adobe Media Administration Server to use the AD account.
This mismatch in accounts was causing the mutex issue and stopping the AMS account from running. Read access to the NAS and log on as a service right on the AMS server
was all that required for the stream from NAS to work.
If any Adobe staff read this thread - can I please request that the section on "Mapping Directories to Network Drives" in the "Configuring the Content Storage" section of the help guide (http://help.adobe.com/en_US/adobemediaserver/configadmin/adobemediaserver_5.0.3_config_adm in.pdf) be revised to be clearer as to what windows services need to be reconfigured
to support AD authentication
Thanks
Jason

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Choppy streaming from NAS and AppleTV3

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