Videostream for Chromecast is a Chrome app that lets you stream videos from your local computer to any Chromecast available on your network. It works flawlessly for as long as I can remember until recently where the screen just hung there after I selected the video file to stream and didn’t go anywhere.

Reinstalling Videostream didn’t help, nor resetting the Firewall settings. I used VLC’s Chromecast support for a few times but it doesn’t always work as smoothly as Videostream. So, I did some research and found the cause and fix eventually, thanks to this Reddit post.
Basically what happened is that Google has mode some updates on the UI of the casting function in recent releases. Because of the change, Videostream couldn’t properly call up the UI that lets you choose a casting device. Fortunately, you can disable this UI change through Flags.
Open Chrome and go to chrome://flags/
Search for Views Cast dialog flag and switch its setting from Default to Disable. To prevent future breakdown because of the UI change, you can also find the Upcoming UI features flag and disable it.

Restart Chrome browser, and open

YAY!!! Thank you so much, I tried all the solutions and finally stumbled on your post. It’s solved now and working great.
Thanks a lot Kent! With your article it was fixed in a sec. Did you know you can simply link to this flag? Select and drag this to the address bar (or copy paste) and the flag you need lights up
chrome://flags/#views-cast-dialog
Yes! Many Thanks! The problem is solved!
Thanks Heaps. Solved the issue for me too.
Love Videostream… Works so well I would have been pretty sad to have lost the ability to use it
You are an angel <3
Spot on. Well done, fixed it for me.
damn, not working for me. It shows it all blurry and the stupid circle thing just rolling around. I tried uninstalling then reinstalling as well, that just caused me to lose all the movies I had started, now I can’t even select any cuz it just gets blurred.
Thanks a lot mate!!!
It’s not working for me. Chrome restarts and the flag is still on “default”. It’s not saving my choice.
I can do the first part!
The second part “Upcoming UI features ” is’t to be found ???
And I cant start Videostream for Chromecast up!!!
What to do ?
I’m on the latest version of both chrome and videostream, but still get the error page, and both those flags you mentioned don’t seem to exist (anymore). Any ideas?
1. On the address bar of your Chrome browser, go to chrome://flags/. On the search flag, search for “Connect to cast devices on all IP addresses”. Change it from Default to Enabled then relaunch your browser.
2. After the relaunch, search for “WebRTC new encode cpu load estimator”. Change it from Default to Enabled then relaunch your browser.
3. Search for the flag “Load Media Router Component Extension”. Change it from Default to Enabled then relaunch your browser.
4. Try casting again.
I did this and rebooted. Video stream started working! All other efforts failed.
also try
1. Exit any running-instance of Chrome.
2. Right click on your “Chrome” shortcut.
3. Choose properties.
4. At the end of your “Target:” line add the command line flag.
–disable-features=AudioServiceAudioStreams
it should look like: chrome.exe –disable-features=AudioServiceAudioStreams
5. Launch Chrome like normal with the shortcut.
theses are idea and instruction from google them selfs
PC would not accept this string.
Thank you bunches! Be safe