HW Transcode Broken - Shield v9 - PMS v1.24

Server Version#:v1.24.5.5173
Player Version#: 8.28.0.30077
Android Version (NOT UPDATED) 8.2.3

After discovering v1.25 PMS doesn’t HW transcode, I downgraded to v1.24.5.5173 and rebuilt completely from scratch. This is on my Shield which I has not been upgraded to Experience 11

I thought it was HW transcoding as I tested 1 h.265 movie and it had no issues remotely streaming to my iOS device. Upon further investigation, other titles show HW transcoding is working, but I get infinite spinning in the player for both my iOS device, and Google Chrome on my laptop. It will do that regardless of remote playing, or direct playing. The reason it attempts to transcode playing on my laptop is that the resolution on my laptop is 1080 and cannot natively display 4k content (at least that’s my theory).

When I play the same content on my network with 4k capable screens, they play just fine because they don’t have to transcode.

Wondering why transcoding shows it’s working, but then gives infinite buffering and a blank screen on the player?

Anyone else on a non-upgraded Shield and v1.24 PMS with HW transcode issues?

I’m wondering if I have to downgrade to v1.23 to get transcoding to work correctly.

Hello, I have problems too.

  • Shield Firmware 8.2.3
  • PMS 1.24.5.5173
    Playback via WEB-Firefox (app.plex.tv) does not work for me, hen playing 4K videos that need to be transcoded.
    Only the spinning circle comes and nothing else happens.
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Thank you.

That’s exactly what I’m experiencing. I get spinning circle in Chrome, Edge, and IE. Also on the iOS app. It’s only the large 4k content that’s giving me problems transcoding.

I could have sworn it was working properly when I was running PMS v1.23.x

I’m tempted to try downgrading yet another version, but I end up spending so much time to do so.

Let me ask a different question; is the Shield TV Pro (2019) supposed to be powerful enough to HW transcode 4k HEVC to 1080p h.264?

Here’s an example;

  • Duration 39:35
  • Bitrate 22769 kbps
  • Width 3840
  • Height 2160
  • Aspect Ratio 1.78
  • Video Resolution 4K
  • Container MKV
  • Video Frame Rate 24p

Here’s what transcode says;
4K (HEVC Main 10 HDR) (hw)
1080P (H264)—Transcode (hw)

Should this have enough power to transcode on the fly? Seems like it will play 2 seconds if it buffers for a minute.

I have no issues transcoding this smaller bitrate HEVC in real time;

  • Duration 2:43:47
  • Bitrate 2036 kbps
  • Width 1920
  • Height 800
  • Aspect Ratio 2.35
  • Video Resolution 1080p
  • Container MKV
  • Video Frame Rate 24p

Is there some maximum bitrate or resolution at which the HW can no longer convert in real time? If so, what would that be?

Beuller

Yes, I believe the Shield is powerful enough to transcode a 4k title. At the moment I can’t test it because of the issue you started this thread with, but I’m almost certain I’ve done it in the past. I seem to remember being frustrated because I couldn’t keep it from transcoding. In the earlier days of 4k HDR playback on Plex, the goal was always to get it to direct play.

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Thanks Mark,

Seems I need to be the one to yet again rebuild PMS at a v1.23 build and test, since I’m not getting feedback here to confirm/dismiss my hypothesis that v1.24+ has fundamentally broken transcoding insofar as the hardware isn’t keeping up with 4k transcodes.

I realize my use case is probably very obscure compared to normal usage, and even I very rarely would have use for remotely transcoding 4k content, but that was a primary reason I bought the Shield TV Pro. If I can get HW transcoding to efficiently process 4k by downgrading to v1.23, that’s what I’ll do.

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Have you disabled HDR tone mapping? I have the 1.24 with android 9 update and hw transcoding it’s working with h265 4k hdr if i disable the tone mapping.

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