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Playback stops after a few seconds, goes back to "Unable to Stream" screen #7
Description
Hey.
I am using the latest QS (1.2.2) and QF (2.0.2). I downloaded all episodes and subtitles and tried to run an episode on the game. I got presented with the Unable to Stream screen. I thought that I maybe have to patch manually, so I did that via QF and set the QS ini to this:
[Server]
OfflineMode=true
Port=10000
[Subtitles]
ClosedCaptioning=true
[VideoList]
Patchfile=false
After this the video seemed to start fine, but after 4 or 5 seconds, it stopped and went back to the Unable to Stream screen. Regardless of what I try, I can't get the episodes to run properly. I already checked that the episode files are fine and even redownloaded all of them. No change to the outcome unfortunately.
Attached is a log with "LogLevel_Network=8" and "LogLevel_OfflineStreaming=8". If you need other loggers enabled, please let me know!
Thank you for your hard work,
Loofou
Activity
GrzybDev commentedon Nov 1, 2026
Hello! Thanks for the report, although I cannot reproduce this on my PC, can I ask you to download 1080p versions of the J1B-X1-X2 episode? (The one that you played according to logs)
I fear that this is neither QS and QF fault, and for some reason your game really wants to show lower quality stream. The logs you sent kind-of proves that, because everything in the log is what I would expect :)
quick command to run:
.\QuantumFetcher_v2.0.2_Windows.exe download "path\to\QuantumBreak" -e all --video J1B-X1-X2 --audio enus --text enus -yplease also move
videos\episodes\J1B-X1-X2\J1B-X1-X2_video_20000000.ismvout of the episode folder (so the Quantum Streamer won't preload metadata from it)loofou commentedon Nov 1, 2026
Hm interesting. I thought I downloaded all quality levels, but apparently only the 4k one. I run the game in 4k, so not really sure why it wants it on 1080p. So I'm downloading that one :D will let you know if it works, thanks.
GrzybDev commentedon Nov 1, 2026
By default QuantumFetcher only downloads "best" quality, which usually works fine (until it doesn't like in probably your case :D ), I'm not certain what's happening in your case, but test with 1080p will confirm whether it's an bigger issue or just localized one :)
loofou commentedon Nov 2, 2026
This seems to work. Thanks for the tipp with the quality level. Didn't think of this at all. Is there maybe a way to enforce quality levels in QS? If not, as that something you could do? Might safe others the trouble later :)
loofou commentedon Nov 3, 2026
Hm no, it stopped working again. Managed to watch part of episode 1, then it failed again. This is really frustrating. Is there no way to enforce the quality level somehow? I really don't want to have to download half a TB just to satisfy QB if it decides to use a different quality level by random :(
GrzybDev commentedon Nov 8, 2026
Hi, sorry for long delay, and sorry for the problem, although I'm still not certain what doesn't work in your setup. I still don't see any possible issue within QS and QF,
From what I understand your game tries to request wrong files, and I have no idea why it does that, it never occured in my setup. You definitely don't need every quality level, the game should only switch between the levels the manifest file offers, so keeping one level on disk should force it.
Other than just deleting the whole videos\episodes folder, the only thing I can suggest is:
*_video_20000000.ismvfile invideos\episodes(the 2160p tracks)..\QuantumFetcher_v2.0.2_Windows.exe download "path\to\QuantumBreak" -e all --video 12000000 --audio enus --text enus -yThis should only download the missing files in 1080p, and will keep the files you already have. You can also try lower quality videos (although it shouldn't matter).
If it still stops, please attach a new log with the same log levels, it shows which quality level the game asked for right before the error. And if possible please also upload the generated .ism and .ismc files (those are manifests files that are generated by QF)
GrzybDev commentedon Nov 8, 2026
One thing I can think off that may cause this issue is some weird port conflict in your setup, by default QS randomizes it's own port on game start, so I have 100% certanity that the port is unused.
If your config file is still the same as in first message, I recommend changing that to:
(but the QS itself, doesn't need config - the default is to allow connection to Microsoft server, but if you downloaded episode, then it will be streamed from local disk, so by default and by design QS is "seamless")
This will launch the QS on random free port, and patch the videoList file automatically.
loofou commentedon Nov 9, 2026
I will delete everything again and redownload the 1080p version. Then I'll remove the manual port config and let QS do the videolist patching. I'll let you know how it goes :)
loofou commentedon Nov 10, 2026
Alright, finally got time to do this again. Here are the logs and manifest files, as well as a screenshot of the folder so you can see which files are present (in case the manifest says something else). Had to rename the file ending of the manifest files so github accepts them.
QuantumStreamer.log
J1B-X1-X2.ism.txt
J1B-X1-X2.ismc.txt
GrzybDev commentedon Nov 11, 2026
Thanks for the logs and manifests. This seems to be bigger rabbit hole than I hoped for.
Everything on the Quantum Streamer / Quantum Fetcher side seems to check out, and matches what I would expect.
So the quality level never was the cause, sorry for that and extra downloads (although that was the most obvious cause I could think of)
Just so I can recap later: Your game seems to download first chunk (around 2 seconds) of both video and audio, and for some reason never asks for the next part. About 6 seconds later game gives up and shows you the error. First log with 4K looks exactly the same. On my PC, with the same 4K-only setup as in your first log, the game asks for the next fragments within a fraction of a second.
The natural thing I would test (and please do that):
Sorry I can't give you proper solution as for now, but honestly I have no clue as for now what's wrong in your setup 😅
loofou commentedon Nov 13, 2026
So regular game does not stream either, which is why I looked into QF/QS. My internet speed is probably not fast enough for it, or the EU servers are down, not sure. I tried it again just now by reverting the dll changes and it still fails to stream anything.
I will try the online mode in QS this evening.
If that fails as well, I guess I watch the episodes from the folders via VLC. that works fine. It's just such a shame to do it that way.
loofou commentedon Nov 13, 2026
I set OfflineMode=false just now and tried it again. Same as before, but doesn't even start to play the episode a second, just has "Buffering" for three seconds, then goes back to "Could not stream" view. Here is the log, but it basically looks the same as the others :/
QuantumStreamer.log
GrzybDev commentedon Nov 13, 2026
Yeah, that probably confirms my suspicion that it's not QS/QF fault, it's some weird issue in your system. I'm not sure if there's anything I can do.
I think it's worth checking whether your Antivirus or Firewall / VPN or other network "optimization" tools are responsible for this issue. Try to temporarily disable them, the episodes should play straight from microsoft servers (the servers are still up, in the EU at least).
The other thing I would check is Audio - do you have 5.1 audio output? Or just stereo? Maybe it's worth checking that in Windows settings.
I strongly recommend also disabling overlays and other mods (like RivaTuner/Afterburner, ReShade, Special K, Discord overlay etc.)
I know it sucks, but everything points to failure within your system, not with QS/QF. If those suggestions doesn't help, then I honestly have honestly no idea how to help.
One thing I should ask also - What's your windows version? (The one showed in "System" in "Settings" > "System")
IF it's "Windows 10 something N" or "Windows 11 something N" (with "N" at the end) then this also may be an issue, and you should install Microsoft's Media Feature Pack in that case.