Youtube Red Original - Impulse - terrible video quality on ATV4

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geekiegeek

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#237882 22-Jun-2018 09:05

I know that Apple docent support VP9 which may be part of the problem but watching Impulse S01E02 last night was almost unwatchable. Dark scenes especially, were pixelated and lots of colour banding. Basically looked like two blobs talking to each other.

I tested on two Sony TV's one 2015 LCD and the other an A8F OLED and they both look the same. Also tried both Wi-Fi and Ethernet but no change. The same video looks fine on Safari on my iMac using the same internet connection so I don't think its a connectivity problem plus all other streaming apps look fine.

If anyone has Youtube red and wants to take a look, the worst of it is around the 30 minute mark when they are in the car at night.

Senecio

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#2042161 22-Jun-2018 09:29

No ATV but I can check it out tonight on an nVidia Shield and report back.

Dial111

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#2042260 22-Jun-2018 10:28

Hmm I have the exact same issue on my ATV 4K but it's with Netflix only, every other streaming app including YT Red works flawlessly. May add it's only isolated to the ATV app as Netflix apps on TV, PS4 Pro, phones and tablets have no issues.

dacraka

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#2042384 22-Jun-2018 13:21

I found it to be perfect quality, other than dark scenes hard to make out detail.

geekiegeek

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#2042385 22-Jun-2018 13:25

dacraka:

I found it to be perfect quality, other than dark scenes hard to make out detail.

Apple TV 4K? What type of TV?

Senecio

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#2042723 23-Jun-2018 06:28

Played fine here on the Shield. Contrast was poor in the dark scenes but no pixelation or banding.

geekiegeek

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#2042728 23-Jun-2018 07:05

wonder if its a Sony thing. Might fire up the inbuilt Youtube app on the TV's and see what that looks like.

As a side note I do wish Apple and Google could sort out their differences regarding codecs so we could get 4K, HDR in Apple applications.

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geekiegeek

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#2046119 29-Jun-2018 17:06

I've worked out what the problem is. The ATV4 was running Youtube in Dolby Vision as that was the default picture mode on the ATV. Changing this to 4K HDR10 has sorted out the picture quality and the ATV4 still goes into Dolby Vision mode when its fed a Dolby Vision source (Netflix). I tried running in 4K SDR so any SDR material would play as intended without conversion to HDR but then Netflix wouldnt play Dolby Vision titles at all.