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Published 20 hours ago • verified publisher icon CasparCG

CasparCG Goes Slow Mo

Open PeterAkakpo opened this issue 5 years ago • 6 comments

Expected behaviour

caparcg should play smoothly provided there is more cpu and memory available

Current behaviour

with 6 channels ( video playing on each channel) , casparcg play video is slow with total cpu comsumption at 8% and memory consumption of 500MB. total system memory is 8GB

Steps to reproduce

  1. add 6 channel to config file
  2. play videos on each of the 6 channel
  3. add a screen consumer or NDI consumer to one of the channel to monitor

Environment

  • Commit: latest build
  • Server version: 2.3
  • Operating system: Windows 10

Screenshots

If applicable, add screenshots as complementary information.

PeterAkakpo avatar Jan 07 '20 20:01 PeterAkakpo

What is gpu usage like? I suspect that this could be either gpu maxing out, or bandwidth to/from the gpu maxed out on frame transfers (not 100% sure how to get numbers to check this).

Julusian avatar Jan 08 '20 10:01 Julusian

nvidia 1050 TI

PeterAkakpo avatar Jan 24 '20 05:01 PeterAkakpo

it also happens when you more then 5 videos on a single channel

PeterAkakpo avatar Jan 24 '20 05:01 PeterAkakpo

https://user-images.githubusercontent.com/7926382/106777761-2d101900-663d-11eb-96e6-e7c9355ea2be.mp4

i have tried 2.3.2 LTS beta and i can say its a great improvement. i was able to play 9 instances a video files (1GB in size) with no issue, video was smooth and sound was ok too. upon playing the tenth file ,video is still smooth with a noticeable slowness, but sound is jerking/cracking on decklink output and out of sink on system audio.

RESOURCE USAGE FOR 10 VIDEO FILES (1gb IN SIZE) MEMORY 1.3GB CPU 26% GPU: 60%

SYSTEM Windows: 10 Pro graphic card: NVidia GT710 Decklink card: Intensity Pro 4K

CASPARCG SETTINGS video mode: 1080i5000

I think it will rock with better hardwares

great work

PeterAkakpo avatar Feb 02 '21 07:02 PeterAkakpo

memory ,cpu and gpu have been stable for an hour now with only some -+5 up and down

PeterAkakpo avatar Feb 02 '21 08:02 PeterAkakpo

another observation, all the 9 videos play 90% smoothly only when i scale the layers as attached above. but when i play all the 9 video files without scaling (thus playing all layers full screen) then the videos start going slow. the slowness is noticeable after playing the third file and audio too cracking heavily on both system audio and decklink audio

PeterAkakpo avatar Feb 03 '21 16:02 PeterAkakpo

this definitely sounds like a performance bottleneck of your machine. there are other issues open about improving performance

Julusian avatar Mar 06 '23 23:03 Julusian