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While watching programs, we can hear a voice describing what is happening. This sometimes means that we cannot hear what is being said by the actors. The voice over is also heard on the recordings.
I would appreciate any help. It has only started in the last couple of months
Turn off Audio dialogue – Don’t know your unit but think there must be a button on the remote perhaps “AD”?
Audio Description – (on remote 3 up from bottom 1 right (next to opt+)). It has a speaker icon with a ? mark next to it. Press again to remove the AD icon so you see just English.
Someone will no doubt have pushed the button accidentally (do you have a cat ?
)AD works slightly differently to Freesat on HD channels. (Repassac lives in France). On freesat the AD track is a separate audio track to the main Dolby Digital audio. On Freeview-HD the AD data is embedded in the same audio track (It uses aac audio that is capable of including AD in the same data0
grahamlthompson – 13 hours ago »
AD works slightly differently to Freesat on HD channels. On freesat the AD track is a separate audio track to the main Dolby Digital audio. On Freeview-HD the AD data is embedded in the same audio track (It uses aac audio that is capable of including AD in the same data0
Are you sure about that Graham ?
AFAIK with Freeview HD and SD transmissions, the AD audio is still contained in a separate stream to the main audio stream. Only difference to Freesat is that both streams are in AAC format. Main audio uses AAC, whereas AD uses HE-AAC, which is only suitable for lower bit rates.
raydon – 3 minutes ago »
grahamlthompson – 13 hours ago »
AD works slightly differently to Freesat on HD channels. On freesat the AD track is a separate audio track to the main Dolby Digital audio. On Freeview-HD the AD data is embedded in the same audio track (It uses aac audio that is capable of including AD in the same data0
Are you sure about that Graham ?
AFAIK with Freeview HD and SD transmissions, the AD audio is still contained in a separate stream to the main audio stream. Only difference to Freesat is that both streams are in AAC format. Main audio uses AAC, whereas AD uses HE-AAC, which is only suitable for lower bit rates.
Copying a Dragons Den Episode (which has AD), I will let you know. Never seen more than a single track on other recordings I have transferred (Could be a coincidence that none had AD).
Here’s MediaInfo for an episode of Coast I recorded on my HDR Fox T2
Code:General
ID : 16521 (0x4089)
Complete name : F:Coast_20140522_1509.ts
Format : BDAV
Format/Info : Blu-ray Video
File size : 1.91 GiB
Duration : 37mn 33s
Overall bit rate mode : Variable
Overall bit rate : 7 268 KbpsVideo
ID : 101 (0x65)
Menu ID : 17472 (0x4440)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.0
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : 27
Duration : 37mn 32s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709Audio #1
ID : 102 (0x66)
Menu ID : 17472 (0x4440)
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Muxing mode : LATM
Codec ID : 17
Duration : 37mn 33s
Bit rate mode : Variable
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Delay relative to video : -803ms
Language : EnglishAudio #2
ID : 106 (0x6A)
Menu ID : 17472 (0x4440)
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : HE-AAC / LC
Muxing mode : LATM
Codec ID : 17
Duration : 37mn 33s
Bit rate mode : Variable
Channel(s) : 1 channel
Channel positions : Front: C
Sampling rate : 48.0 KHz / 24.0 KHz
Compression mode : Lossy
Delay relative to video : -441ms
Language : English
Language, more info : Visual impaired commentaryText
ID : 105 (0x69)
Menu ID : 17472 (0x4440)
Format : DVB Subtitle
Codec ID : 6
Duration : 37mn 29s
Delay relative to video : 3s 708ms
Language : EnglishYou are correct – of course
Audio details from Dragons Den
Audio #1
ID : 102 (0x66)
Menu ID : 17472 (0x4440)
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Muxing mode : LATM
Codec ID : 17
Duration : 59mn 9s
Bit rate mode : Variable
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Delay relative to video : -808ms
Language : English
Audio #2
ID : 106 (0x6A)
Menu ID : 17472 (0x4440)
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : HE-AAC / LC
Muxing mode : LATM
Codec ID : 17
Duration : 59mn 9s
Channel(s) : 1 channel
Channel positions : Front: C
Sampling rate : 48.0 KHz / 24.0 KHz
Compression mode : Lossy
Delay relative to video : -436ms
Language : English
Language, more info : Visual impaired commentary
Text
ID : 105 (0x69)
Menu ID : 17472 (0x4440)
Format : DVB Subtitle
Codec ID : 6
Duration : 59mn 5s
Delay relative to video : 4s 737ms
Language : English
grahamlthompson – 18 hours ago »
Audio Description
Thanks for putting me right Graham. Have not seen it for a while and when I did must have had a different sort of A.D.
Think I have just twigged the difference.
Satellite has two tracks, you have to choose on or the other. For HD primary track is ac3 (2.0 or 5.1). AD track is 2.0 MP2 so replay will always be stereo.
Freeview-HD has two tracks AAC 2.0 or 5.1, AD track is mono only centre speaker only according to medianinfo.
Presumably selecting AD adds the audio and does not replace it.
grahamlthompson – 1 hour ago  »Â
Presumably selecting AD adds the audio and does not replace it.
Yes, on freeview the AD does not replace the main audio.
What a freeview AD receiver/recorder does will vary according to the implementation.
Some implementations will just merge the 2 tracks.
Others will go one better and use flags from the AD track to variably subdue the main track so that the AD can be heard clearly. The louder the normal track is at that point the more the flags will indicate a required reduction of volume from the main track.
Humax do neither of those. Instead Humax perversely use the flags to reduce the volume of the AD track instead of the audio volume of the normal track. This frequently results in a muffled AD and occasionally when the normal track is loud the AD cannot be heard at all. Humax have been doing this on the HD-FOX-T2, HDR-FOX T2 and the HDR-2000T/1800T for all firmwares since April 2012.
Fred – 6 days ago  »Â
While watching programs, we can hear a voice describing what is happening. This sometimes means that we cannot hear what is being said by the actors.
The AD track attempts to describe the necessary situation (which isn’t always what is on the screen!) when the normal sound track can be best sacrificed. If this occurs when the normal soundtrack is speaking it is usually because the normal sound track just contains just the semblance of speech, or the normal sound track is in a non-English language and therefore the AD will read the burnt in subtitles. Obviously with the latter on Humax freeview boxes it brings the foreign language to the fore instead of the English!
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