Forum › Forums › Freeview HD › FVP 4000T, 5000T › 5 USA recordings start late and finish early
- This topic has 63 replies, 11 voices, and was last updated 9 years, 10 months ago by
Anonymous.
-
AuthorPosts
-
January 15, 2016 at 10:19 pm #67994
Anonymous
Inactivegiverny – 49 minutes ago »
Sounds like a separate topic is needed just to discusss “Shaun the Sheep” which by the way is definately laugh out loud material

Totally agree, I can’t believe JamesB has never watched at least one episode. I love the farmer, though most of the characters make me laugh out loud too.
January 16, 2016 at 12:44 pm #67995Anonymous
InactiveJamesB
Quote:The latest thinking is that they might be using the scheduled start or end time from the Guide under some circumstances, rather than the near real-time signals.…
Could legacy coding be resulting in the box opting to use Guide start/end times rather than AR signals “in some circumstances”?
That is an interesting and possible cause. I would rephrase it as “Is it possible that the box uses the timing signals, but falls back on the scheduled times if it fails to see them or they are not present”.
On second thoughts, I think that must be wrong.
A programme is scheduled for 9pm and record it with the timing signal. The programme actually begins at 9:10pm.
If the box looked at the scheduled time as well, the box would start recording at 9pm, the scheduled time, as it had not seen the timing signal. This defeats the whole purpose of the timing signal!
January 16, 2016 at 2:06 pm #67996Anonymous
InactiveJohnH77 – 55 minutes ago »
JamesB
Quote:The latest thinking is that they might be using the scheduled start or end time from the Guide under some circumstances, rather than the near real-time signals.…
Could legacy coding be resulting in the box opting to use Guide start/end times rather than AR signals “in some circumstances”?
That is an interesting and possible cause. I would rephrase it as “Is it possible that the box uses the timing signals, but falls back on the scheduled times if it fails to see them or they are not present”.
On second thoughts, I think that must be wrong.
A programme is scheduled for 9pm and record it with the timing signal. The programme actually begins at 9:10pm.
If the box looked at the scheduled time as well, the box would start recording at 9pm, the scheduled time, as it had not seen the timing signal. This defeats the whole purpose of the timing signal!
A UK Freeview box using AR should follow the Now/Following signal unless the timer has been set manually. Piers Lomax was referring to the possibility that the Huawei YouView box might follow the scheduled time instead, either at Start or End or both.
If both, and if the AR time agreed with the scheduled time as would probably quite often be the case, the programme would record correctly and the fault would not be noticeable. If the programme was running late or early, a box fault of the kind referred to by Lomax could result in the recording
– starting too early and ending too early (programme truncated);
– starting too late and ending too late (missed beginning);
– or starting too early and ending too late, which would deliver a fully recorded programme but could play havoc with adjoining timers.
The FVP4000T probably doesn’t suffer from such a fault, it’s just a speculative possibility.
Edit. Interesting to see a similar problem described on a Vestel box – manufacturer not identified.
Quote:Summary: EPG scheduled start time overrides accurate recording start signal
Description: The recording start trigger behaviour has changed compared to pre-emerald software. Before, recordings always start when the now/next info changed (i.e. accurate recording). Now it looks like the start signal is only obeyed if a programme starts before the scheduled start time. If a programme scheduled start is at 21:00, for example, and the now/next signals the actual start at 21:03, the software does not wait for the start signal and starts recording 3 minutes early at 21:00 instead. Maybe this change in behaviour is intentional?
Steps To Reproduce:
However, I’m probably way off-topic for the thread. Apologies. I am silent.
January 17, 2016 at 11:37 am #67997Anonymous
InactiveFaust – 1 day ago »
giverny – 49 minutes ago »
Sounds like a separate topic is needed just to discusss “Shaun the Sheep” which by the way is definately laugh out loud material

Totally agree, I can’t believe JamesB has never watched at least one episode. I love the farmer, though most of the characters make me laugh out loud too.
I was so please when for series 3 (and 4) they brought back the farmer’s puppet design from series 1.
January 17, 2016 at 12:34 pm #67998Anonymous
InactiveJohnH77 – 1 day ago »
1 The Humax 9200T released 10 years ago seems to use the programme information banners to start (and presumably stop) the recording. I think it was probably a design error by Humax to use the programme information banner for timing. Equally, however, it could have been that the timing signals were not available when the 9200T design was completed. Or it could be that the standards changed. For example, the information banner might originally have been sent at the same time as the programme timing signals, allowing manufacturers to choose either. If this requirement was then relaxed, those manufacturers who chose it were left up the creek without the proverbial paddle.
2 The FVP-4000T is much more modern and seems to me to use the correct “Record me now” signals to start and stop the recordings.
The PVR-9200T does use the change of event in the EIT p/f transmission for accurate recording, which is the same detail that other boxes use. (EIT P/F is what James referred to as now/following, and also sometimes referred to as now/next.)
The earlier versions of the 9200T software when AR was introduced displaying the I-panel on a live channel confusingly shows the programme info from the 7 day schedule instead of that associated with the current event as indicated by the EIT p/f.
Both my 9200T are currently not setup but I thought that the latest version does show the detail from the EIT p/f and therefore changes when the EIT p/f present event changes?
February 2, 2016 at 12:18 pm #67999Anonymous
InactiveI have had a response from Channel 5 which, frankly, I just do not believe!
I complained:
Quote:Dear Sir or MadamI wish to make a complaint about the timing signals transmitted by channels 5 and 5 USA which Freeview and Freeview+ recorders use to record the programmes.
These signals should be transmitted when the program starts, and when the program credits end, so that the recorder can record the entire programme.
5 and 5 USA transmit these signals at the incorrect times.
Some examples: …
I got this email this morning.
Quote:Dear JohnThank you for your recent e-mails. We apologise for the delay in responding.
We were sorry to read that you experienced problems recording programmes from our channels. As is the case with most channels, Channel 5 does not currently provide ‘live’ or real time synchronisation of our Electronic Programme Guide (EPG). This can result in programmes being cut short if buffers or extensions of PVR recording times are not added to the recordings. If possible, we advise viewers to add five minutes to the start and the end of recordings in these instances.
Sadly we are at a loss to explain why you recorder would stop recording Neighbours five to ten minutes early.
Thank you for your interest in Channel 5.
Yours sincerely
Txxxx
VIEWER ADVISOR
Can anyone give me references to documentation, or anything else which shows that C5 does transmit timing signals, so that I can knock some sense into this person.
February 2, 2016 at 12:42 pm #68000Anonymous
InactivePeople have been complaining about C5 not complying with AR for years, without much improvement except briefly when YouView wagged a finger at them. I suspect there’s zero chance of them sorting it out, now they’ve been bought by Viacom. At least you got a polite reply with reasonable advice.
February 2, 2016 at 2:03 pm #68001Anonymous
InactiveMs Google tells me that Digital TV Group (DTG) publishes the Freeview specification in a document known as the “D-Book” which is only availabe to members – see The D-Book
I thought that “accurate recordings” was an advertising puff for Freeview Plus. If it is included in the specification, and C5 does not provide it (which I do not believe!,) then C5 needs a swift kick in the appropriate area.
February 2, 2016 at 2:16 pm #68002Anonymous
InactiveThe Freeview specifications are standards which equipment must meet in order to carry the Freeview logo.
February 2, 2016 at 2:37 pm #68003Anonymous
InactiveI must be missing something here!
I buy a Freeview+ box because it has the Freeview+ logo meaning (as far as I can see, and among other things) that it will “Accurate Record”.
Surely therefore, there must be an obligation on the broadcaster to do what it needs to do – provide accurate timing signals – so that the Accurate Record works as advertised.
February 2, 2016 at 2:40 pm #68004Martin Liddle
ParticipantJohnH77 – 2 minutes ago »
Surely therefore, there must be an obligation on the broadcaster to do what it needs to do – provide accurate timing signals – so that the Accurate Record works as advertised.
Try contacting Freeview and see what they say.
February 2, 2016 at 2:42 pm #68005Anonymous
InactiveQuote:I buy a Freeview+ box because it has the Freeview+ logo meaning (as far as I can see, and among other things) that it will “Accurate Record”.
Surely therefore, there must be an obligation on the broadcaster to do what it needs to do – provide accurate timing signals – so that the Accurate Record works as advertised.
No, the Freeview+ logo tells you the box has been put through the Freeview+ tests and is certified as meeting the standard. Including, among other things, the ability to correctly handle “Accurate Recording”.
February 2, 2016 at 2:55 pm #68006Anonymous
InactiveQuote:No, the Freeview+ logo tells you the box has been put through the Freeview+ tests and is certified as meeting the standard. Including, among other things, the ability to correctly handle “Accurate Recording”.I understand that, but are you saying that there is no obliigation on the broadcasters to provide the timing signals to make it work?
There is an obligation on the broadcasters to provide programme banners and to provide the information to populate the EPG. IT seems therefore that there must be an obligation to provide accurate timing markers.
Where can I read a copy of the specification and/or the broadcaster’s obligations when it ius granted a licence to broadcast on Freeview?
February 2, 2016 at 2:56 pm #68007Anonymous
InactiveHere’s a digital spy thread from quite a while back which explains how it works and includes a response from Freeview to save you the trouble.
February 2, 2016 at 3:28 pm #68008Anonymous
InactiveThanks. The relevant bit seems to be
Quote:There aren’t actually start and stop signals – there’s a unique code for the programme, and it’s broadcast for the duration of the programme. Some broadcasters are better than others at ensuring that the code changes in sync with the actual transmitted picture and others don’t give a ****.That is very useful, but unfortunately anecdotal, saying it is the timing of this “unique code” which C5 gets wrong.
Do you know what the “unique code” is called? Or where I can find a publication describing it? I would like to skewer C5/5USA by telling them exactly what they are doing wrong.
-
AuthorPosts
- You must be logged in to reply to this topic.