Manclad - 10 mins ago »
grahamlthompson - 25 mins ago »
Manclad - 46 mins ago »
I was watching Bloodlines last night on BBC1HD on live tv and had to pause it for a minute, so when I came back and pressed play I was the watching it on delayed recording. Sure as anything within a few seconds it was once again giving bursts of pixelation every few minutes.
This morning, I'm watching ITV1HD, and have purposely paused the live TV and hit play again so I'm watching it on delay.... and not one single error.
Someone in the thread had commented this problem only occurs in the evenings... any thoughts on this observation that the problem is related to evenings?
I had some pixelation on Live TV yesterday evening. Not sure why you pause the live TV. I can't see this having any effect. When you see it the problem is already in the timeshift buffer. This is a direct bit for bit for bit copy of the live stream sent to the unit mpeg decoders. If you rewind the buffer during pause you should be able to locate the flawed stream data.
As it sometimes only happens once or twice in a single programme not surprised you don't see it anymore. Nothing to do with pausing the content. Just a coincidence I reckon.
Hi. I pause the live TV simply to go put the kettle on, go for a pee, or whatever. So when I come back I hit play and I carry on watching from where I left off. But obviously, from this point, I'm watching the program time shifted, and sure as heck, I start seeing the incidents of brief pixelation.
Just FYI...I'm trying to ensure I'm using the correct terminology when I'm trying to describe this issue I'm seeing. So, for example, hitting the pause button, then hitting play button (same button) is what I call Time Shift Recording even though its not a purposely made recording, and I realise I'm just using the buffering ability of the box. Also, watching live TV on the Aura is (seemingly) using the "Live TV" app to watch live TV!!! To me i just am watching digital TV, but with the Aura box... one is using an app. Slightly confusing.
I will try and explain a bit more.
Firstly Live TV is a seperate android app.
Secondly the tuner extracts a stream of digital data (zeros and ones) from the multiplex you are using related to the TV channel you are using.
A Multiplex uses a single UHF (analogue) carrier just like analogue TV. That is why there is no such thing as a digital aerial. The difference is in the way the carrier is modulated to carry video and audio data. Digital TV uses digital rather than analogue data.
The tuner subtracts a copy of the analogue carrier producing a series of zeros and ones for the channel you are watching (it can actually do this for 2 channels at the same time (hence you can record two channels from the same multiplex using only a single tuner).
The output is stream of zeros and ones. That's exactly what a hard disk is designed to record.
The signal has a degree of error correction built in. If the issue affecting the decoding exceeds the error correction capability the on screen image and any recording produces frame break up.
All the time the box is on the stream is copied to any recording you may have in progress if you are recording. It is also buffered to a seperate file on the hard disk.
This allow two functions. One creating a complete recording of the current programme (automatically if you were tuned to it when the programme started.
The pointers to the part of the buffer where the current programme started are reset automatically to point at this location. If you press the instant recording button the content of the buffer to the point where you pressed the record button is instantly converted into a regular recording which will continue adding to the content until the programme is completed.
Two allows you to pause and rewind to any point within the current buffer.
If you see a corrupted frame on screen by the time you press the pause button it will already be in the buffer file (and also in any recording in progress on the same channel which you may or may not be watching. Of course if not watching you will only find out when you watch the recording.
It is thought that the aura tuners are very sensitive which in one way is good because they should be able to hang on to a weak signal.
The downside is if the signal level is too high it can clip the peaks off the analogue carrier to a point where the digital error correction fails.
It's easy to reduce the signal level using a cheap plug in attenuator.
Post what the signal diagnostics say the channel you having issues with say.
Rather than watch the programme live if you are recording it. Especially on channels with ads start watching the recording 15 mins or so after it has started (chasing playback). You can then skip the ads using the programmeable skip keys.
You can also safely pause and release as many times as you want this way.
If you try and pause live TV close to the programme end you may lose the end. Remember the buffer resets when a new programme starts.
| Mon 15 Mar 2021 12:25:22
#20 |