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P: Playing video causes high CPU usage by VTDecoderXPCService and dynamiclinkmediaserver process

Explorer ,
Jun 28, 2020 Jun 28, 2020

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Playing this video in Lightroom's Loupe View will case high CPU usage by VTDecoderXPCService(more than 300%) and dynamiclinkmediaserver(more than 80%) process, and always stuck while playing this video.

Playing the same file in Bridge 10.1.0.163 is fine, VTDecoderXPCService uses only 3% CPU and dynamiclinkmediaserver uses only 0% CPU.

Playing the same file in finder's Quick Lookup is fine, too, VTDecoderXPCService uses only 3% CPU and dynamiclinkmediaserver uses only 0% CPU.

I've uploaded the video file here:
https://www.dropbox.com/s/ga6co10h4vyw89b/2020-06-26182631.mov?dl=0

Environment:
macOS Catalina 10.15.5
Lightroom Classic 9.3

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macOS , Windows

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8 Comments
Explorer ,
Jun 28, 2020 Jun 28, 2020

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PS, this video is taken by DJI Mavic 2 Pro
format is H.265, color is DLog-M, resolution is 4K

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Adobe Employee ,
Jun 29, 2020 Jun 29, 2020

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Thanks for reporting this - I have reported this to the concerned engineering team. Are you facing this issue with _any_ DJI Mavic 2 Pro video imported into Lightroom Classic? 

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Explorer ,
Jun 29, 2020 Jun 29, 2020

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I did a deeper test and here is the results:
  1. No matter color mode is DLog-M, HLG, or Normal, this issue happens.
  2. No matter the extension is .mp4 or .mov, this issue happens.
  3. I only tested H.265 format, but havn't tested H.264 format
  4. The higher resolution it is, the higher CPU usage VTDecoderXPCService use. But even lowest resolution (1080p) video taken by DJI Mavic 2 Pro will cause significant more CPU usage (>70%) than Adobe Bridge (~2%).
  5. Playing this video taken by iPhone 11 Pro in LrC's Loupe View also cause high CPU usage by VTDecoderXPCService: https://www.dropbox.com/s/lk0h14ktlg1grsl/2020-05-24162850.mp4?dl=0

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Explorer ,
Jul 03, 2020 Jul 03, 2020

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Hi G0apher,
Have your team reproduced this issue? Or need some help?

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Adobe Employee ,
Jul 05, 2020 Jul 05, 2020

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We are trying to repro this issue.

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Adobe Employee ,
Jul 06, 2020 Jul 06, 2020

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Hi Victor, 

Thanks for bringing this to our notice.

We can see the video playback stuck issue on few machines but not in all.

Could you please post your "System Info" [LR -> Help -> System Info] ?

CPU usage by VTDecoderXPCService touches 300% and more. DLMS stays within 50%.


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Explorer ,
Jul 07, 2020 Jul 07, 2020

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Hi sumeet, please check my "System Info" at below:
Lightroom Classic version: 9.3 [ 202005281810-476e492c ]
License: Creative Cloud
Language setting: en
Operating system: Mac OS 10
Version: 10.15.5 [19F101]
Application architecture: x64
Logical processor count: 8
Processor speed: 2.7 GHz
SqLite Version: 3.30.1
Built-in memory: 16,384.0 MB
Real memory available to Lightroom: 16,384.0 MB
Real memory used by Lightroom: 875.4 MB (5.3%)
Virtual memory used by Lightroom: 7,065.4 MB
Memory cache size: 13.9MB
Internal Camera Raw version: 12.3 [ 493 ]
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2,AVX,AVX2
Camera Raw virtual memory: 42MB / 8191MB (0%)
Camera Raw real memory: 43MB / 16384MB (0%)
Displays: 1) 1920x1080, 2) 2880x1800
Graphics Processor Info: 
Metal: Intel(R) Iris(TM) Plus Graphics 655


Application folder: /Applications/Adobe Lightroom Classic
Library Path: /Users/vichamp/Pictures/Lightroom/Catalog/Synced Catalog.lrcat
Settings Folder: /Users/vichamp/Library/Application Support/Adobe/Lightroom
Installed Plugins: 
1) AdobeStock
2) Aperture/iPhoto Importer Plug-in
3) DxO PhotoLab 2
4) DxO PhotoLab 2 Importer
5) Facebook
6) Flickr
7) HDR Efex Pro 2
8) Imagenomic Portraiture 3
9) jf Bag-o-Goodies
10) jf Collection Mechanic
11) jf Collection Publisher
12) jf Data Explorer
13) jf Data Plot
14) jf Extended Search
15) jf Focal-length Sort
16) jf Folder Publisher
17) jf Megapixel Sort
18) jf Metadata Viewer
19) jf Metadata Wrangler
20) jf Photoshop Layers
21) jf Proximity Search
22) jf Run Any Command
23) jf System Info
24) jf Video Assets
25) LogiOptions
26) LR/Mogrify 2
27) LRT Export 5
28) Nikon Tether Plugin
29) ON1 Resize Standalone 2019
30) Show Focus Points
31) Teekesselchen
Config.lua flags: None
AudioDeviceIOBlockSize: 512
AudioDeviceName: $$$/dvaaudiodevice/SystemDefaultAndEffectiveDeviceName=System Default (qc30)#{comment}DVAAU-4201250: Open the audio hardware preferences page.
AudioDeviceNumberOfChannels: 2
AudioDeviceSampleRate: 48000
Build: LR5x42
CoreImage: true
GL_ACCUM_ALPHA_BITS: 0
GL_ACCUM_BLUE_BITS: 0
GL_ACCUM_GREEN_BITS: 0
GL_ACCUM_RED_BITS: 0
GL_ALPHA_BITS: 8
GL_BLUE_BITS: 8
GL_DEPTH_BITS: 24
GL_GREEN_BITS: 8
GL_MAX_3D_TEXTURE_SIZE: 2048
GL_MAX_TEXTURE_SIZE: 16384
GL_MAX_TEXTURE_UNITS: 8
GL_MAX_VIEWPORT_DIMS: 16384,16384
GL_RED_BITS: 8
GL_RENDERER: Intel(R) Iris(TM) Plus Graphics 655
GL_SHADING_LANGUAGE_VERSION: 1.20
GL_STENCIL_BITS: 8
GL_VENDOR: Intel Inc.
GL_VERSION: 2.1 INTEL-14.6.18
OGLEnabled: true
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Adobe Employee ,
Jul 07, 2020 Jul 07, 2020

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Thanks Victor, a bug has been logged for the same. Appreciate your help in this regards.

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