(Link to video)
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Hello, and welcome to my first April Fools submission!

  • Everything you need to know can be found in my commentary video.
  • You can view the differences of the inputs between FCEUX and LibTAS by downloading the LibTAS movie file from this submission and FCEUX movie file for Super Mario Bros --> https://tasvideos.org/UserFiles/Info/639106673095114749
I hope you enjoy it!!!

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Posted: 4/1/2026 7:53 PM
TASVideoAgent
They/Them
Moderator
Location: 127.0.0.1
Joined: 8/3/2004
Posts: 17711
Location: 127.0.0.1
This topic is for the purpose of discussing #10325: Dado's PC FCEUX "TAS Super Mario Bros. 1-1" in 03:51.700
Posted: 4/1/2026 8:09 PM
feos
Emulator Coder, Site Admin, Skilled player (1287)
Joined: 4/17/2010
Posts: 11915
NES TAS of 2011
Don't remember if it was discussed already, but you can draw inputs in fceux 2.2.0 and it works in xp.
Warning: When making decisions, I try to collect as much data as possible before actually deciding. I try to abstract away and see the principles behind real world events and people's opinions. I try to generalize them and turn into something clear and reusable. I hate depending on unpredictable and having to make lottery guesses. Any problem can be solved by systems thinking and acting.
Posted: 4/1/2026 9:26 PM
Dado
Player (195)
Joined: 7/2/2024
Posts: 6
PC TAS of 2025
feos wrote:
Don't remember if it was discussed already, but you can draw inputs in fceux 2.2.0 and it works in xp.
iirc I tried fceux 2.2.0, it gave me some error, so unfortunately, in PCem, it's not possible to use FCEUX 2.2.0. It'd need further testing.
Posted: 4/1/2026 11:22 PM
(Edited: 4/1/2026 11:29 PM)
Stockiel
Active player (272)
Location: Daten City
Joined: 11/11/2025
Posts: 34
Location: Daten City
I remember trying to use MarioNES inside of PCem (using eXPerience's MicroXP) and got alright results. But still, this might be pointless, but it IS pretty cool seeing a TAS inside of another TAS. Yes vote (cuz why not).
Don't talk to me until I've had my god damn sugar. Amateur TASer
Posted: 4/3/2026 1:46 PM
MarioSonicTASER
Joined: 1/9/2025
Posts: 9
Cool TAS and i might have an idea. TAS inside TAS inside TAS How it works? Emulate windows 10. Download hourglass Emulate PC with mario rom Make TAS
Posted: 4/3/2026 11:11 PM
CoolKirby
Editor, Experienced player (708)
Joined: 11/8/2010
Posts: 4244
Exotic platforms TASer of 2014 NES TAS of 2013
This is next level. TASception?
MarioSonicTASER wrote:
Emulate windows 10. Download hourglass Emulate PC with mario rom Make TAS
I don't think W10 can be TASed yet, however Hourglass works on XP, so you can use libTAS/PCem to TAS XP -> open Hourglass -> load FCEUX with Mario (or any emulator that works in Hourglass like Neko Project II). Hourglass doesn't support mouse but most emus have keyboard shortcuts you can use instead.
Posted: 5/17/2026 6:05 PM
MarioSonicTASER
Joined: 1/9/2025
Posts: 9
CoolKirby wrote:
This is next level. TASception?
MarioSonicTASER wrote:
Emulate windows 10. Download hourglass Emulate PC with mario rom Make TAS
I don't think W10 can be TASed yet, however Hourglass works on XP, so you can use libTAS/PCem to TAS XP -> open Hourglass -> load FCEUX with Mario (or any emulator that works in Hourglass like Neko Project II). Hourglass doesn't support mouse but most emus have keyboard shortcuts you can use instead.
Or someone make a port of libTAS (not wsl)
Posted: 12 days ago
(Edited: 9 days ago)
feos
Emulator Coder, Site Admin, Skilled player (1287)
Joined: 4/17/2010
Posts: 11915
NES TAS of 2011
Doesn't sync for me, also I can't find SMB with MD5 f94bb9bb55f325d9af8a0fff80b9376d. EDIT: Turns out desync was caused by presence of the following ROMs: 
mda.rom
wy700.rom
8x12.bin
which normally exist in the full ROM pack for PCem, and our guides only work with ROMs that are actually required for specific machines. Apparently keeping them all there is not harmless!
Warning: When making decisions, I try to collect as much data as possible before actually deciding. I try to abstract away and see the principles behind real world events and people's opinions. I try to generalize them and turn into something clear and reusable. I hate depending on unpredictable and having to make lottery guesses. Any problem can be solved by systems thinking and acting.
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