Question / Help stream fps lag for viewers

[Baraccoli]

Hey all, I just found out that I could use a second pc/laptop as a streaming pc for my main pc through the NDI plugin.

I've set up everything and I am able to stream but I noticed that although my laptop's cpu (i5usage is around 30-50% and my connection is green the stream appears really laggy fps wise for the viewers.

Laptop Specs:

Intel Core i5-3210M CPU @ 2.50 GHz

RAM: 10.00 GB

Graphics Card: Intel HD Graphics 4000

I stream at 720p 30 fps and 2000 bitrate and my upload speed is around 60 mbps, anyone know why the stream appears really laggy fps wise?

Thanks for the help

 

[Baraccoli]

heres the logs from earlier: https://pastebin.com/fJw2xRu9

heres an example of the stream fps lag for viewers: https://www.twitch.tv/videos/179006910

 

[darthclide]

I can't help you, but it looks like your problem is similar to mine:
https://obsproject.com/forum/threads/using-ndi-plugin-streaming-computer.75216/

I have tested the streaming computer with 20000 bitrate for a local recording, and the video is crisp and smooth. This is a pretty good indicator that the problem is not on NDI's end. (I feared that because I connected to the streaming computer through a router it would cause problems).

Can you confirm that if you set your preset to superfast, if your stream is less laggy fps wise?

 

[Baraccoli]

I can't help you, but it looks like your problem is similar to mine:
https://obsproject.com/forum/threads/using-ndi-plugin-streaming-computer.75216/

I have tested the streaming computer with 20000 bitrate for a local recording, and the video is crisp and smooth. This is a pretty good indicator that the problem is not on NDI's end. (I feared that because I connected to the streaming computer through a router it would cause problems).

Can you confirm that if you set your preset to superfast, if your stream is less laggy fps wise?

I tested the superfast option on my streaming laptop but it still produces the same amount of lag when viewing my stream. I've messed with my bitrate but I haven't seen any improvement, started from 3000 > 1000 >2000 so far.

 

[darthclide]

I tested the superfast option on my streaming laptop but it still produces the same amount of lag when viewing my stream. I've messed with my bitrate but I haven't seen any improvement, started from 3000 > 1000 >2000 so far.

Hmmm. I meant for you to test with 10000 or higher. Because if your problems go away it is either A. A problem with your CPU (faulty or not strong enough) or B. A problem with how OBS is utilizing your CPU (something I am inclined to believe. Whether it be through settings you can change or hidden code that you can't fix) or C. A combination of the two.

The biggest problem I am seeing is that locally recorded content often looks different from the stream. Even with the exact same settings (for me I am at 3400 kbs). I was getting so excited for this plugin too. RTMP was a pain because I couldn't transfer the data without it being distorted. And ffmpeg / udp stream is very limited because 90% of the options only send video or audio and not both. Add on top of that the nightmare of trying to select the codecs that will work well.

I guess there aren't enough people using streaming computers with no capture cards. Otherwise a long time ago somebody should have already found a simple way to send your data across the LAN with lossless quality. I hope this NDI plugin eventually can claim this feat.

 

[Baraccoli]

Hmmm. I meant for you to test with 10000 or higher. Because if your problems go away it is either A. A problem with your CPU (faulty or not strong enough) or B. A problem with how OBS is utilizing your CPU (something I am inclined to believe. Whether it be through settings you can change or hidden code that you can't fix) or C. A combination of the two.

The biggest problem I am seeing is that locally recorded content often looks different from the stream. Even with the exact same settings (for me I am at 3400 kbs). I was getting so excited for this plugin too. RTMP was a pain because I couldn't transfer the data without it being distorted. And ffmpeg / udp stream is very limited because 90% of the options only send video or audio and not both. Add on top of that the nightmare of trying to select the codecs that will work well.

I guess there aren't enough people using streaming computers with no capture cards. Otherwise a long time ago somebody should have already found a simple way to send your data across the LAN with lossless quality. I hope this NDI plugin eventually can claim this feat.

I fixed it, all I did was switch to the 32 bit OBS and switch my process priority to High

 

[darthclide]

I fixed it, all I did was switch to the 32 bit OBS and switch my process priority to High

Wow. I guess it won't hurt to try that tomorrow. Odd that reducing the power of the program helped? Feel free to post again in a few days confirming that this wasn't just a fluke please.