What does the "AD))))" logo mean on some TVNZ programs?

Forums › Home Theatre (including HTPC and EPG Collector) › What does the "AD))))" logo mean on some TVNZ programs?

bill9001

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#99218 14-Mar-2012 21:39

I have sent a feedback form to the TVNZ website several days ago and so far I have not heard back from them. I have also googled this. I am 99.9% certain that TVNZ's meaning has absolutley nothing to do with "Anno Domini".
Cheers :-)

LennonNZ

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#595347 14-Mar-2012 21:45

http://tvnz.co.nz/access-services/audio-description-4169072

Allows Blind/Hard of Slight people to "watch" some TV shows as it describes what happening..

bill9001

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Wannabe Geek

#595355 14-Mar-2012 21:54

Thanks for that for that LennonNZ. I thought it may have been something to do with audio, but more as in how it was decoded ie an alternative to 5.1 surround. Shame that TVNZ did not / could not answer this!

LennonNZ

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#595361 14-Mar-2012 22:06

All it is is an alternative Audio Track which they have overdubbed someone describing what is on the screen overlaid onto of the normal audio track.

Its just an alternative to the AC3 or the AAC Audio Track. Whatever format they overlay the Audio onto I dunno but most TV's will tell you the audio format

For example on Sky if you press the setup menu when you are watching you can change the "Audio Language"

nigelj

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#595373 14-Mar-2012 22:19

LennonNZ: All it is is an alternative Audio Track which they have overdubbed someone describing what is on the screen overlaid onto of the normal audio track.

Its just an alternative to the AC3 or the AAC Audio Track. Whatever format they overlay the Audio onto I dunno but most TV's will tell you the audio format

For example on Sky if you press the setup menu when you are watching you can change the "Audio Language"

Pretty much what Lennon says above, the technical-ish details, TVNZ on TV One/2 pretty much broadcast 3 audio channels (I think full time, I may be wrong though), examination of a recording off TV One (an episode of Person of Interest from a few weeks ago (ignore the duration etc, I've noticed oddities w/ ffmpeg and it's irrelevant)...

Input #0, mpegts, from '/net/kaki/srv/myth/d1/1001_20120227212500.mpg':
Duration: 04:21:17.18, start: 11007.037822, bitrate: 2125 kb/s
Program 1
    Stream #0.0[0xfa]: Video: h264 (Main), yuv420p, 1920x1080 [PAR 1:1 DAR 16:9], 80.92 fps, 50 tbr, 90k tbn, 50 tbc
    Stream #0.1[0x12c](eng): Audio: aac_latm, 48000 Hz, stereo, s16
    Stream #0.2[0x131](ita): Audio: aac_latm, 48000 Hz, stereo, s16
    Stream #0.3[0x191](eng): Audio: ac3, 48000 Hz, 5.1, s16, 384 kb/s
    Stream #0.4[0x3ea]: Data: [11][0][0][0] / 0x000B
    Stream #0.5[0x3f2](eng): Subtitle: [6][0][0][0] / 0x0006
    Stream #0.6[0x3fc](eng): Subtitle: dvbsub (hearing impaired)
At least one output file must be specified

0xfa is the main Video, 0x12c is the standard AAC-LATM audio stream, 0x191 is the Dolby Digital audio stream, I believe when the content has no Dolby Digital sound, it is just a copy of what is broadcast on the AAC-LATM stream.

0x131 is where the audio descriptive magic happens, even though it shows as Italian, is it as previously described, a copy of the 0x12c AAC-LATM stream, with dubbing that describes the scene. Last I checked, TVNZ revert to a copy of the main AAC-LATM stream again during periods where they do not have audio descriptive for the program.

TVs/STBs should give you the opportunity to switch between all 3 audio channels (or 2 if Dolby Digital isn't supported.

(fwiw, 0x3ea is the MHEG-5 EPG data, 0x3f2 is (iirc Teletext), and 0x3fc is a subtitle broadcast.)

bazzer

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#597137 19-Mar-2012 14:04

My PVR never seems to have any audio for those shows. If I switch to the AC3 Italian stream (I assume this is the one?) I just get silence?