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Yeah, it sounds like your TV is expecting 0-255 but your ATV is outputting 16-235. Does it look like the third example here?
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May 4, 2012 22:05
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| # ¿ May 17, 2024 20:43 |
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Modern Pragmatist posted:Did you try converting the .mov file to a h.264 .mp4 using Handbrake?
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May 21, 2012 15:53
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Legdiian posted:I believe the issue is with the way the TV's EDID info is setup. Since it's a TV with stereo speakers it's EDID info is set as 2 channel. So when the TV and the Cable Box/DVD Player/Game system does their handshake the video device goes "Oh hey, you're a 2 channel source so here is 2 channel audio." So it's not that the TV can't put the digital surround signal out, it's that it's not receiving digital surround from the video device. Some of the newer/more advanced TVs might have an option in their setup that allows you to "change" the EDID so it tells other devices it's capable of receiving digital multi-channel signals and can then therefore send multi-channel out of the TOSLINK port. You're mostly correct. It's still a design decision by Samsung (or whoever) that is preventing it from happening. HDMI EDID information isn't simply a "hey I have 2 speakers", it's a combination of codecs, bitrates, and channels etc. So while a receiver might present a big list of formats like so quote:LPCM 2-channel, 16/20/24 bit depths at 32/44/48/88/96/176/192 kHz a TV that doesn't support 5.1 passthrough only advertises this: quote:CE audio data (formats supported) The problem with only advertising 2.0 LPCM is that *any* TV with an inbuilt digital tuner *has* to be able to decode Dolby 5.1 (and mixdown to stereo or output the full 5.1 via SPDIF) -- it's in the American ATSC and European DVB specs. So any TV that that doesn't advertise 5.1 AC3 over HDMI despite the fact they're more than capable of both decoding and outputting it for OTA broadcasts is 100% at fault and really only doing the bare minimum. Samsung in particular were very late to the party. I have an comparatively ancient 2006 LG that advertises 5.1 over HDMI EDID. The good news is that most recent TVs advertise AC3 5.1, and the newest models also advertise & decode DTS 5.1. (My 2013 Sony Bravia and 2012 Samsung Series 6 both do.) So yes, on newer TVs you can hook up your Apple TV or Cable box or whatever and you're 100% getting 5.1 over optical. The other good news is that often you can actually force 5.1 AC3 over optical even if the TV doesn't claim to support it. You can definitely do so on the 360 (disable display discovery) and the PS3 (change Audio Output to Manual and set Dolby Digital). It's quite possible that certain other devices also ignore the EDID info. I haven't actually even checked what the ATV does when you set Dolby to 'On' rather than 'Auto' on a device that doesn't claim to support it. frumpsnake fucked around with this message at 08:45 on Jul 22, 2013 |
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Jul 22, 2013 08:04
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edit: old info.
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Aug 28, 2013 04:17
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