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When you hit pause, sometimes it skips back rather than just pausing at the point you click the pause button, and it seems the skip back time is controlled by the “instant replay” setting.
Anyone else find this annoying? It’s not consistent (is it only the first time you pause it happens?) and there’s no way to switch it off. Personally, I’d rather it just paused exactly at the moment I pressed pause, not jump back 15 seconds (which is the default setting).
My HDR-1000s pauses instantly at the point when the button is pressed. Only the reverse skip key jumps back 15 seconds.
Interesting… It definitely seems to jump back for me, and only kicks in the first time I pause live tv (it works properly on recordings)
grahamlthompson – 26 minutes ago »
My HDR-1000s pauses instantly at the point when the button is pressed. Only the reverse skip key jumps back 15 seconds.
Not with liveTV it doesn’t.
The first time pause is pressed it jumps back into the buffer by a few seconds, after that it will pause instantly at the point the button was pressed.
Try it with non buffered live TV, I think you’ll find the Foxsat HDR is exactly the same.
Ok, to reproduce:
1. Watching live TV;
2. Press pause;
3. Screen goes black briefly and it skips back about 7 seconds.
4. Pressing pause again pauses immediately, while you’re playing back from the buffer.
5. Press exit to get back to live TV;
6. Pressing pause skips back again.
I’m mistaken about the “instant replay” setting having any significance here (I had it set to 7 seconds, and pausing live TV skips back 7 secs, but this is a coincidence).
Still annoying though, can anyone else repro?
Ok, this is expected behaviour? I don’t like it! Never mind, I’ll just put it down to yet another usability / UI foible about this box that annoys me.
souporjuice – 23 minutes ago »
Ok, this is expected behaviour? I don’t like it! Never mind, I’ll just put it down to yet another usability / UI foible about this box that annoys me.
Could it be skipping back to the I frame at the start of the gop. Pausing mid gop would be very hard to do. I rarely if ever pause live TV, most stuff is watched in chasing playback, same on the Foxsat-hdr.
No idea what “mid gop” is, but it can’t be that difficult to instantly and seamlessly pause live TV. My Panasonic Freesat TV it can manage it, Sky+does the same so I’ve been told.
With both Humax HDR’s you have to stay a few seconds behind ‘live’, if you get too close to the live broadcast they will jump forward, involving another black screen. 🙄
Reffub – 21 minutes ago »
No idea what “mid gop” is, but it can’t be that difficult to instantly and seamlessly pause live TV. My Panasonic Freesat TV it can manage it, Sky+does the same so I’ve been told.
With both Humax HDR’s you have to stay a few seconds behind ‘live’, if you get too close to the live broadcast they will jump forward, involving another black screen. 🙄
If you use the forward skip keys when close to live you can’t jump out of the buffer. At standard settings the forward skip stops working if less than 2 minutes left. GOP is group of pictures. Basically digital works by sending one full frame (I frame) followed by a load of data that records the differences required to rebuild the subsequent frames in a packet of data known as a GOP. Seamless pause is easy at an I frame, much harder at an intermediate point from the point of seamless replay. Ever noticed the slight delay on digital when changing channel compared to analogue, the picture can’t appear till the first I frame is received.
Reffub – 11 hours ago »
grahamlthompson – 26 minutes ago »
My HDR-1000s pauses instantly at the point when the button is pressed. Only the reverse skip key jumps back 15 seconds.
Not with liveTV it doesn’t.
The first time pause is pressed it jumps back into the buffer by a few seconds, after that it will pause instantly at the point the button was pressed.
Try it with non buffered live TV, I think you’ll find the Foxsat HDR is exactly the same.
The foxsat-hdr on restart from pause on channels using ac3 loses a second or so of audio, this doesn’t happen on a HDR-1000s. As I said using chasing playback eliminates all pausing issues, especially the loss of the end if using time slip on a programme you are also recording when the programme ends.
In any case if recording two and watching a 3rd then live pause only works if the two recordings happen to be from the same transponder.
@grahamthompson – thanks for the explanation, it makes sense. One thing though, I don’t remember this on my Sky box. I’m not a Sky advocate, and was very glad to get away from them, but would Sky be doing something different here? Or maybe I imagined it! Also, the skip back appears to be roughly 7 or 8 seconds on the HDR1000s, which seems a bit long if I’m understanding correctly what a GOP is…?
souporjuice – 24 minutes ago »
@grahamthompson – thanks for the explanation, it makes sense. One thing though, I don’t remember this on my Sky box. I’m not a Sky advocate, and was very glad to get away from them, but would Sky be doing something different here? Or maybe I imagined it! Also, the skip back appears to be roughly 7 or 8 seconds on the HDR1000s, which seems a bit long if I’m understanding correctly what a GOP is…?
Does seem rather a long time. I would expect a GOP to be roughly 50-75 frames (2-3 seconds). It’s hard to find exactly what settings the broadcasters mpeg encoders are using. The more frames you can pack into a GOP the greater the signal compression. Without mpeg compression digital TV simply wouldn’t be practical (too much picture data).
For example 1920 x 1080 HD at 25 fps transmits 2073600 pixels/second purely for video. Each pixel has 24 bits of data, 8 each for Red Green and Blue giving a data requirement of 49766400 bits/second. Approx 50 Megabits/Second which is around 10 times the compressed stream actually uses.
It’s possible the Sky boxes uses say a frame store buffer so the picture is delayed behind real time so when you pause you access a memory block with complete frames. This is merely speculation
. Interesting to watch the same programme on two identical TV’s side by one using Sky and the other Freesat Need a broadcast engineer to really explain the complexities.
I think you might be right about Sky – I’ve noticed in the past a few seconds lag between a Sky TV and a terrestrial TV.
There are no complexities with my Panasonic TV it Buffers live TV, it isnt delayed in anyway and it certainly doesn’t care about GOP, plug a HDD into it and it starts recording/buffering, it can then perfectly and instantly pause live TV and you can then catch up without ever losing the picture.
Just to make absolutely sure it was live I also had the sound from my 1000s coming through my amp which matched the sound on the TV’s live picture.
So GOP has nothing to do with it, with my TV anyway.
Terrestrial and Satellite TV are always going to be a few seconds different, nothing unusual there.
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