Bug Report 2 PC OBS Preview / Stream Video Stuttering

[qqStrat]

Ok, I have narrowed down part of this stuttering issue that happens on my stream to twitch.

When I am viewing the OBS preview as I am streaming, live, locally or simply preview I get really bad stuttering every 3 - 5 minutes, however OBS says I am not getting any frame drops or any other message telling me there is a problem. It does it on every setting.

When I record locally, and view the file through VLC I see no stuttering. When I view the video (multiple different computers) on twitch the stuttering is there.

Here is the video. At 1:40 the stuttering starts and by the end of the video (stream) it cleans it self up.
http://www.twitch.tv/qqstratx/b/466690041

I have testing everything as far as settings. The only thing I can can conclude that the problem is the video card, Can you please confirm or not that for some reason there is a bug with DX10 stuttering with h.264 that is translating to the preview and my actual stream and VODs on twitch?

I really did not think the video card had anything to do with encoding or streaming. Should I get a 11.1 DX card ?

Thank you for taking a look. Also when viewing twitch flash videos if your audio is not set to 44100 it stutters. It is a known issue.

 

[dodgepong]

According to the log, OBS is performing perfectly. I watched the video and I didn't notice any stuttering, even around 1:40...

 

[Lain]

For me the video played exactly as expected, and looked fantastic. If you mean like that it's not 100% perfect, that's impossible just simply due to the encoding.

 

[qqStrat]

Ok, I am getting stuttering (not pixelation) On all three of my computers. It seems every time I watch it using different settings I see stuttering at different times. Why is it that when I download the file it plays perfectly through VLC but when I play it or even preview while not streaming but while encoding through OBS I am getting this stuttering in the preview screen ?

I am using chrome tried disabling plugins / hardware ect. But it cannot be the browser cause I see the stuttering inside of the OBS preview screen. Any ideas? I am so frustrated.

 

[Lain]

If you download it and it plays perfectly through VLC, and it doesn't play perfectly through flash, then that's a decoding issue caused by flash. Flash has a pretty poorly optimized decoder. It's a known issue with flash and there's pretty much nothing anyone can do about it.

Though for my PC it played fine.

 

[dodgepong]

If the video produced plays perfectly in a video player, why does it matter if there is a little bit of stuttering in the OBS preview? The output is fine, no? I hope you're not trying to play a game through the OBS preview window...

 

[qqStrat]

If the video produced plays perfectly in a video player, why does it matter if there is a little bit of stuttering in the OBS preview? The output is fine, no?

Because the output is not fine. In the OBS preview it is stuttering - The VOD on Twitch has the same exact stutter I am seeing in the preview. However locally playing through a VLC it is perfect.

I am using the preview window to check custom settings as I stream (locally/live). Why does OBS not alert me of the stutter ? Why is VLC Smooth ?? If VLC is not using flash is there a flash player that I can use locally to see if the FLV file will stutter ?

Even on ultra fast why is the decoder struggling ? This should be easy to decode.

 

[dodgepong]

The video playing in VLC and the video playing on Twitch are exactly the same. Literally, the exact same file. The problem on Twitch is more likely Flash being a hog and being difficult to watch video on. I watched the video on Twitch and I saw no stutter, personally, and neither did Jim.

 

[qqStrat]

Ok, so what do you think I am seeing? I Just installed windows 8 fresh. Windows 7 on the other PC. Windows 8 On a laptop. All 3 I am getting stutter at different times during the video. What plugin do you have enabled ? Pepperflash ?

Could somehow my ISP be throttling the video and messing with the content ? Is there a way to verify / test / analyse what is exactly happening in my situation ? How does caching work compared to playing through VLC vs Chrome ?

Something is very wrong.