Sticky [Cinema / Media System] Black Screens / Videos Not Working

WinterPhoenix said:
The Fix: x86-64 Branch with CEFCodecFix
To Install, first select your Operating System:​
After Trying The Fix, Still Not Working
  1. Completely close GMod and restart it
  2. Make sure you're launching GMod through CEFCodecFix, otherwise Steam might overwrite the patched files
  3. Try Uninstalling VLC Media Player
    • If you have VLC version 2.2.2 or above, it may be causing an issue. Uninstall VLC Media Player and then Reinstall it, unchecking the "Web Plugins" option during setup.
If you find that you're having issues after having tried all of this and have already restarted GMod, reply to this thread and we'll try our best to help.
Click to expand...
help
 
WinterPhoenix said:
The Fix: x86-64 Branch with CEFCodecFix
To Install, first select your Operating System:​
After Trying The Fix, Still Not Working
  1. Completely close GMod and restart it
  2. Make sure you're launching GMod through CEFCodecFix, otherwise Steam might overwrite the patched files
If you find that you're having issues after having tried all of this and have already restarted GMod, reply to this thread and we'll try our best to help.
Click to expand...
it says my gmod installation is not ready. and its definitely up to date and ive verified the integrity of the files multiple times
 
the terminal reads out the following:
Error: One or More Files failed to match the Original Checksum!
Please go to Steam > Garry's Mod > Properties > Installed Files, Verify Integrity, then try again!

I have verified the integrity of the gmod files and steam says it's alright, yet I have tried to run it again several times but Gmodcodecfix still says that garrys mod has failed the Checksum. In case if your wondering, gmod's latest update was pushed this January and I assume that is the reasoning. Also this is unrelated but maybe you may provide me with a solution but everytime i open up gmod, the save and dupe menus are broken which do not allow me to spawn, browse or use dupes from the workshop, only the ones I have created as the buttons for those disappear, is there a solution to this?
 
MlemMlem said:
the terminal reads out the following:
Error: One or More Files failed to match the Original Checksum!
Please go to Steam > Garry's Mod > Properties > Installed Files, Verify Integrity, then try again!

I have verified the integrity of the gmod files and steam says it's alright, yet I have tried to run it again several times but Gmodcodecfix still says that garrys mod has failed the Checksum. In case if your wondering, gmod's latest update was pushed this January and I assume that is the reasoning. Also this is unrelated but maybe you may provide me with a solution but everytime i open up gmod, the save and dupe menus are broken which do not allow me to spawn, browse or use dupes from the workshop, only the ones I have created as the buttons for those disappear, is there a solution to this?
Click to expand...
GMod was updated today.

Try running it now.
 
I'm getting the same error:
Error: One or More Files failed to match the Original Checksum!
Please go to Steam > Garry's Mod > Properties > Installed Files, Verify Integrity, then try again!

This may have been caused by the new update released a few days ago
 
Swift205 said:
I'm getting the same error:
Error: One or More Files failed to match the Original Checksum!
Please go to Steam > Garry's Mod > Properties > Installed Files, Verify Integrity, then try again!

This may have been caused by the new update released a few days ago
Click to expand...
are you on mac? im getting the same thing
 
Swift205 said:
I'm getting the same error:
Error: One or More Files failed to match the Original Checksum!
Please go to Steam > Garry's Mod > Properties > Installed Files, Verify Integrity, then try again!

This may have been caused by the new update released a few days ago
Click to expand...
There were daily updates up through yesterday. Everything's slowed down now and should be working.
 
I have installed CEFCodecFix and it runs successfully; however, when it asks to start GMod, I say Yes, it shows me what executable it will run and I hit enter to continue. Then nothing happens. The terminal window closes, but GMod never starts. Steam’s window shows the Play button green and ready to go. If I click it, again nothing happens. It changes to blue Starting, then auto-stops and goes back to green Play. It never pops up a window, a dock icon or anything. Just dies with no indication that it ran at all. Any ideas?
 
steamdhs said:
I have installed CEFCodecFix and it runs successfully; however, when it asks to start GMod, I say Yes, it shows me what executable it will run and I hit enter to continue. Then nothing happens. The terminal window closes, but GMod never starts. Steam’s window shows the Play button green and ready to go. If I click it, again nothing happens. It changes to blue Starting, then auto-stops and goes back to green Play. It never pops up a window, a dock icon or anything. Just dies with no indication that it ran at all. Any ideas?
Click to expand...
Sounds like some sort of crash at least. Check the crashes folder at SteamApps/common/GarrysMod/crashes/ and DM me the most recent pair of DMP/TXT files.
 
Well, this certainly isn't a new one for you guys. Sunday evening, when booting GMod using the executable, everything worked fine, I could play GMod. However now, whenever I try to load it up, I get. "Error: One or More Files failed to match the Original Checksum! Please go to Steam > Garry's Mod > Properties > Installed Files, Verify Integrity, then try again!". What should I do? It says there a lot of networking things or whatever that "Needs Fix".
 
DaMamaMiaGuy said:
Well, this certainly isn't a new one for you guys. Sunday evening, when booting GMod using the executable, everything worked fine, I could play GMod. However now, whenever I try to load it up, I get. "Error: One or More Files failed to match the Original Checksum! Please go to Steam > Garry's Mod > Properties > Installed Files, Verify Integrity, then try again!". What should I do? It says there a lot of networking things or whatever that "Needs Fix".
Click to expand...
In this case, that just means the game is updated and you need to wait for our manifest to update to match the game version (we do a checksum validation on game files so that patching works, when files are updated a mismatch will occur).
 
DaMamaMiaGuy said:
Well, this certainly isn't a new one for you guys. Sunday evening, when booting GMod using the executable, everything worked fine, I could play GMod. However now, whenever I try to load it up, I get. "Error: One or More Files failed to match the Original Checksum! Please go to Steam > Garry's Mod > Properties > Installed Files, Verify Integrity, then try again!". What should I do? It says there a lot of networking things or whatever that "Needs Fix".
Click to expand...
This should be fixed now.
 
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