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Hello
My HD Fox T2 is set to multi-channel output, and I am getting 5.1 sound (to Yamaha amp) from C4 HD and mp4 files copied to HDD.
But BBC1 HD or BBC2 HD channels only transmit in 2.0.
I suspect this isn’t a problem with the Humxax but with the BBC, and wondered if anyone knew anything
Thanks very much
Tony
The vast majority of program’s are only broadcast in 2.0.
Currently I am only aware that Doctor Who is broadcast with 5.1 surround, I’m not really sure if any other program’s are.
Thanks Gonzo
As a fan of Doctor Who, I know that is only broadcasting in 2.0 to me.
So. If it’s working as 5.1 for you, I wonder why it isn’t for me.
Transmitter? Might Blaenplwyf be the problem?
Dr Who is definitely in 5.1 on satellite. I haven’t recorded it on any of my Freeview-HD boxes. I will do so next time it’s on. I do have one 5.1 recording on one of my HSR FOX T2’s, it’s the original BBC-HD Test card and 5.1 audio test broadcast from the daily demo loop.
Note the audio actually transmitted and recorded is aac 2.0 or 5.1. The box transcodes to ac3 on output.
The BBC has problems with it’s current 5.1 encoders with periodic audio dropouts, that may well be the reason so little content is in 5.1.
I would be very surprised if the Saturday BBC2-HD broadcast of The Last Night Of The Proms isn’t in 5.1.
I have set both Dr Who and the Proms on a HDR FOX T2 so watch this space
Dr Who from satellite audio details
Audio
ID : 4352 (0x1100)
Menu ID : 1 (0x1)
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Format settings, Endianness : Big
Codec ID : 6
Duration : 1h 18mn
Bit rate mode : Constant
Bit rate : 384 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Compression mode : Lossy
Delay relative to video : -661ms
Stream size : 215 MiB (6%)
Language : English
Thanks Graham
I shall watch that exact space
Doctor Who needs that sub-woofer boom, especially in the languid opener to Capaldi’s reign.
ant_in_wales – 22 minutes ago »
Thanks Graham
I shall watch that exact space
Doctor Who needs that sub-woofer boom, especially in the languid opener to Capaldi’s reign.
Your subwoofer should work with 2.0 I imagine. For a stereo source it will be down to the crossover settings set in the amplifier for the main speakers to the subwoofer. Where a separate lfe channel is present at a guess the cross over frequencies are simply not used. All 6 channels go down to 20Hz.
grahamlthompson – 3 hours ago » The BBC has problems with it’s current 5.1 encoders with periodic audio dropouts, that may well be the reason so little content is in 5.1.
I haven’t experienced any of those dropouts for some time (actually my amp switching away from then back to 5.1 mode momentarily) so I assumed it had been sorted? I had forgotten about it until I recently got round to playing an older recording.
ant_in_wales – 1 day ago »
As a fan of Doctor Who, I know that is only broadcasting in 2.0 to me.
So. If it’s working as 5.1 for you, I wonder why it isn’t for me.
Transmitter? Might Blaenplwyf be the problem?
My freeview HD Dr Who audio is a mixed bag but mainly 5.1. Last weekend’s Dr Who was 5.1 but the weekend before was 2.0. Both were recorded from the same HD channel, from the same transmitter, on the same Humax freeview+ HD box.
Transmitter: Sudbury
name: Doctor Who_20140830_1929.ts
Audio #1
ID ……………… : 6602 (0x19CA)
Menu ID …………. : 17540 (0x4484)
Format ………….. : AAC
Format/Info ……… : Advanced Audio Codec
Format profile …… : LC
Muxing mode ……… : LATM
Codec ID…………. : 17
Duration…………. : 48mn 51s
Bit rate mode ……. : Variable
Channel(s) ………. : 2 channels
Channel positions … : Front: L R
Sampling rate ……. : 48.0 KHz
Compression mode….. : Lossy
Transmitter: Sudbury
name: Doctor Who_20140906_1931.ts
Audio #1
ID ……………… : 6602 (0x19CA)
Menu ID …………. : 17540 (0x4484)
Format ………….. : AAC
Format/Info ……… : Advanced Audio Codec
Format profile …… : LC
Muxing mode ……… : LATM
Codec ID…………. : 17
Duration…………. : 47mn 53s
Bit rate mode ……. : Variable
Channel(s) ………. : 6 channels
Channel positions … : Front: L C R, Side: L R, LFE
Sampling rate ……. : 48.0 KHz
Compression mode …. : Lossy
The Doctor Who series for last year was 5.1 for the ones that I looked at. I am not 100% sure but they were probably from Sudbury as well.
However although the 3D Day of the Doctor and its repeat was 5.1, the normal HD Day of the Doctor was 2.0. These were all probably recorded from Crystal Palace.
grahamlthompson – 23 hours ago »
I would be very surprised if the Saturday BBC2-HD broadcast of The Last Night Of The Proms isn’t in 5.1.
Going back to 2013 Dr Who at the Proms HD was 2.0.
(I probably used Crystal Palace for that.)
Ah – I didn’t see last week’s.
If we can all have a look what it broadcasts this week I’d be very grateful.
Thank you all for your help
Tony
can’t comment on bbc1HD, but the repeat Dr Who on bbc3HD is definitely 5.1 on my hdrfoxT2
Luke – 8 hours ago »
ant_in_wales – 1 day ago »
As a fan of Doctor Who, I know that is only broadcasting in 2.0 to me.
So. If it’s working as 5.1 for you, I wonder why it isn’t for me.
Transmitter? Might Blaenplwyf be the problem?
My freeview HD Dr Who audio is a mixed bag but mainly 5.1. Last weekend’s Dr Who was 5.1 but the weekend before was 2.0. Both were recorded from the same HD channel, from the same transmitter, on the same Humax freeview+ HD box.
Transmitter: Sudbury
name: Doctor Who_20140830_1929.ts
Audio #1
ID ……………… : 6602 (0x19CA)
Menu ID …………. : 17540 (0x4484)
Format ………….. : AAC
Format/Info ……… : Advanced Audio Codec
Format profile …… : LC
Muxing mode ……… : LATM
Codec ID…………. : 17
Duration…………. : 48mn 51s
Bit rate mode ……. : Variable
Channel(s) ………. : 2 channels
Channel positions … : Front: L R
Sampling rate ……. : 48.0 KHz
Compression mode….. : Lossy
Transmitter: Sudbury
name: Doctor Who_20140906_1931.ts
Audio #1
ID ……………… : 6602 (0x19CA)
Menu ID …………. : 17540 (0x4484)
Format ………….. : AAC
Format/Info ……… : Advanced Audio Codec
Format profile …… : LC
Muxing mode ……… : LATM
Codec ID…………. : 17
Duration…………. : 47mn 53s
Bit rate mode ……. : Variable
Channel(s) ………. : 6 channels
Channel positions … : Front: L C R, Side: L R, LFE
Sampling rate ……. : 48.0 KHz
Compression mode …. : Lossy
The Doctor Who series for last year was 5.1 for the ones that I looked at. I am not 100% sure but they were probably from Sudbury as well.
However although the 3D Day of the Doctor and its repeat was 5.1, the normal HD Day of the Doctor was 2.0. These were all probably recorded from Crystal Palace.
grahamlthompson – 23 hours ago »
I would be very surprised if the Saturday BBC2-HD broadcast of The Last Night Of The Proms isn’t in 5.1.
Going back to 2013 Dr Who at the Proms HD was 2.0.
(I probably used Crystal Palace for that.)
The Last Night Of The Proms has been 5.1 as long as I can remember on digital HD TV. It was previously simulcast on TV and on FM radio at the time that the only stereo channel was on FM radio. I have happy memories of watching on pre PAl analogue TV with the FM stereo tuner cranked up to get stereo.
At the time it was the only time I was allowed crank up the stereo to get a near experience to being there (down to the better half).
PAL (625 line) broadcasts introduced Nicam digital stereo audio, from that time the audio quality more than matched the quality you could get on FM, simulcast UHF/FM broadcasts ceased.
Since that time I do not reckon any broadcast on the BBC-HD channels, in any format (satellite DVB-S/DVB-S2 or terrestrial (after the DVB-T2 Freeview service was launched), of the Last Night Of The Proms (The bit we all watch (well most of us – Jerusalem etc) ) has not been in anything but 5.1. Like the much advertised Jules Holland it has always been 5.1. It’s kind of a BBC tradition. If it’s not in 5.1 this year, expect a rather large backclash from the audiophiles (like me) who think that this broadcast is usually the best 5.1 you see on any channel.
really strange that last week’s was 5.1 and the week before 2.0 on, I’m assuming, bbc1HD
I’ve not got episode 1/12 anymore, but can again confirm episodes 2/12 and 3/12 are/were 5.1 on bbc3HD
reminds me of the problems C4 had forgetting to switch 5.1 after advert breaks.
Julian Miles aka Jools Holland, I agree, one of the best 5.1 and on the original bbcHD test transmissions excellent clarity where you could even read the beer labels on bottles of beer from the audience in the background.
Quite why, when a lot of DVD’s are already 5.1, that the broadcasters don’t enable 5.1 is beyond me. I’m surprised at the very low uptake of 5.1 from broadcasters, compared to the cost of the production in the first place, flicking a switch to allow 5.1 through is not even a drop in the ocean
No surprise when you think how little attention many programmes pay to the audio mix. Get the cloth-eared, MP3 generation, tea boy to work the sound desk and spend the budget on trick CGI instead.
Last night’s repeat of E03 (Robin Hood) on BBC2HD was 2.0 too, although it was with additional sign language (are they assuming no one watches SL progs with 5.1?)
Let’s have a big test on Saturday, unless anyone knows any other BBC progs in 5.1
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