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

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  • Problem
  • Updated 2 days ago
  • (Edited)
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 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:

macOS Catalina 10.15.5
Lightroom Classic 9.3
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Posted 2 weeks ago

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Photo of Victor.Woo


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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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G0apher, Employee

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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? 
Photo of Victor.Woo


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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:
Photo of Victor.Woo


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

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We are trying to repro this issue.
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Sumeet Choudhury, Employee

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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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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_RENDERER: Intel(R) Iris(TM) Plus Graphics 655
GL_VENDOR: Intel Inc.
GL_VERSION: 2.1 INTEL-14.6.18
OGLEnabled: true
GL_EXTENSIONS: GL_ARB_color_buffer_float GL_ARB_depth_buffer_float GL_ARB_depth_clamp GL_ARB_depth_texture GL_ARB_draw_buffers GL_ARB_draw_elements_base_vertex GL_ARB_draw_instanced GL_ARB_fragment_program GL_ARB_fragment_program_shadow GL_ARB_fragment_shader GL_ARB_framebuffer_object GL_ARB_framebuffer_sRGB GL_ARB_half_float_pixel GL_ARB_half_float_vertex GL_ARB_instanced_arrays GL_ARB_multisample GL_ARB_multitexture GL_ARB_occlusion_query GL_ARB_pixel_buffer_object GL_ARB_point_parameters GL_ARB_point_sprite GL_ARB_provoking_vertex GL_ARB_seamless_cube_map GL_ARB_shader_objects GL_ARB_shader_texture_lod GL_ARB_shading_language_100 GL_ARB_shadow GL_ARB_sync GL_ARB_texture_border_clamp GL_ARB_texture_compression GL_ARB_texture_compression_rgtc GL_ARB_texture_cube_map GL_ARB_texture_env_add GL_ARB_texture_env_combine GL_ARB_texture_env_crossbar GL_ARB_texture_env_dot3 GL_ARB_texture_float GL_ARB_texture_mirrored_repeat GL_ARB_texture_non_power_of_two GL_ARB_texture_rectangle GL_ARB_texture_rg GL_ARB_transpose_matrix GL_ARB_vertex_array_bgra GL_ARB_vertex_blend GL_ARB_vertex_buffer_object GL_ARB_vertex_program GL_ARB_vertex_shader GL_ARB_window_pos GL_EXT_abgr GL_EXT_bgra GL_EXT_blend_color GL_EXT_blend_equation_separate GL_EXT_blend_func_separate GL_EXT_blend_minmax GL_EXT_blend_subtract GL_EXT_clip_volume_hint GL_EXT_debug_label GL_EXT_debug_marker GL_EXT_draw_buffers2 GL_EXT_draw_range_elements GL_EXT_fog_coord GL_EXT_framebuffer_blit GL_EXT_framebuffer_multisample GL_EXT_framebuffer_multisample_blit_scaled GL_EXT_framebuffer_object GL_EXT_framebuffer_sRGB GL_EXT_geometry_shader4 GL_EXT_gpu_program_parameters GL_EXT_gpu_shader4 GL_EXT_multi_draw_arrays GL_EXT_packed_depth_stencil GL_EXT_packed_float GL_EXT_provoking_vertex GL_EXT_rescale_normal GL_EXT_secondary_color GL_EXT_separate_specular_color GL_EXT_shadow_funcs GL_EXT_stencil_two_side GL_EXT_stencil_wrap GL_EXT_texture_array GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_s3tc GL_EXT_texture_env_add GL_EXT_texture_filter_anisotropic GL_EXT_texture_integer GL_EXT_texture_lod_bias GL_EXT_texture_rectangle GL_EXT_texture_shared_exponent GL_EXT_texture_sRGB GL_EXT_texture_sRGB_decode GL_EXT_timer_query GL_EXT_transform_feedback GL_EXT_vertex_array_bgra GL_APPLE_aux_depth_stencil GL_APPLE_client_storage GL_APPLE_element_array GL_APPLE_fence GL_APPLE_float_pixels GL_APPLE_flush_buffer_range GL_APPLE_flush_render GL_APPLE_object_purgeable GL_APPLE_packed_pixels GL_APPLE_pixel_buffer GL_APPLE_rgb_422 GL_APPLE_row_bytes GL_APPLE_specular_vector GL_APPLE_texture_range GL_APPLE_transform_hint GL_APPLE_vertex_array_object GL_APPLE_vertex_array_range GL_APPLE_vertex_point_size GL_APPLE_vertex_program_evaluators GL_APPLE_ycbcr_422 GL_ATI_separate_stencil GL_ATI_texture_env_combine3 GL_ATI_texture_float GL_ATI_texture_mirror_once GL_IBM_rasterpos_clip GL_NV_blend_square GL_NV_conditional_render GL_NV_depth_clamp GL_NV_fog_distance GL_NV_light_max_exponent GL_NV_texgen_reflection GL_NV_texture_barrier GL_SGIS_generate_mipmap GL_SGIS_texture_edge_clamp GL_SGIS_texture_lod
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Sumeet Choudhury, Employee

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