DVR Failed to Record; "TPU: hardware transcoding: enabled, but no hardware decode accelerator found"

[jswantek]

None of my recordings starting @ Jan 11, 2018 19:00:00 recorded successfully I believe due to a “TPU: hardware transcoding” issue despite having a GPU for hardware transcoding that has worked previously. Logs attached.

Logs of the failed recording
file: Plex Media Server.4.log

Jan 11, 2018 19:00:00.817 [13260] DEBUG - Starting a transcode session 1d88e925-345a-4bef-9676-314d9f41213c at offset -1.0 (state=3)
Jan 11, 2018 19:00:00.817 [13260] DEBUG - Streaming Resource: Added session 0CFBF978:1d88e925-345a-4bef-9676-314d9f41213c
Jan 11, 2018 19:00:00.818 [13260] DEBUG - TPU: hardware transcoding: enabled, but no hardware decode accelerator found
Jan 11, 2018 19:00:00.818 [13260] DEBUG - TPU: hardware transcoding: final decoder: , final encoder:
…
Jan 11, 2018 19:00:02.431 [13924] ERROR - [Transcoder] [h264 @ 03d072e0] SPS unavailable in decode_picture_timing
Jan 11, 2018 19:00:02.432 [1800] ERROR - [Transcoder] [h264 @ 03d072e0] non-existing PPS 0 referenced

Logs of previous successful hardware transcoding
file: Plex Media Server.5.log

Jan 11, 2018 12:25:40.385 [13432] DEBUG - Starting a transcode session shcc2ksd3dxs4 at offset -1.0 (state=3)
Jan 11, 2018 12:25:40.387 [13432] DEBUG - TPU: hardware transcoding: using hardware decode accelerator dxva2
Jan 11, 2018 12:25:40.387 [13432] DEBUG - [Universal] Using local file path instead of URL: F:\plex\media\episodes\Doctor Who (2005)\Season 10\Doctor Who (2005) - S10E07 - The Pyramid at the End of the World.ts
Jan 11, 2018 12:25:40.387 [13432] DEBUG - TPU: hardware transcoding: zero-copy support not present
Jan 11, 2018 12:25:40.406 [13432] DEBUG - TPU: hardware transcoding: final decoder: dxva2, final encoder: nvenc

If no hardware decode accelerator is found, is it possible to revert to CPU decoding?

I have since disabled using my GPU for transcoding by unchecking the “Use hardware acceleration when available” option in the Server Settings to try and prevent this from happening in the future, but would like to make use of my GPU if possible.

Any thoughts if this is a Plex Server bug?
A problem with my system?
How to prevent this in the future?

System Information

• Windows 10
• Plex Server Version: 1.10.1.4602
• GPU: GeForce GTX 1060 6GB
• Intel Core I3-4170

[Patan32]

Looks like i have similar error as you.

Hardware Transcoding Failing with Multiple OS with P2000

Did some more testing and i found this. I set the quality to Convert Automatically and it started to transcode. As you can see in the logs it used the right gpu. Original quality is smaller than the transcoded (what’s going on here?). [image] [image] [image] Encode and Decode is working perfectly on Convert Automatically. [image] What now?