![]() This makes it possible to see that in Vorticons Keen, sprites aren't rendered until a frame after the tiles. Instead it displays a hard cut between the fully illuminated world map and new level. I knew these files were fully functional, which is what led me to try a different video player.Īnother effect of the lack of palette shifting is that the fade in/out effect, seen when entering a level for instance, doesn't show up. ![]() VLC played the sound from the recording, but only displayed a black screen. ![]() It wasn't a problem with the video, just VLC.Īnother example of VLC's limitations: While trying to figure out just what was wrong with my recording, I tried to open some older DOSBox-created videos that had been recorded under Windows. After some puzzled experimentation, I went and grabbed MPV (another video player) and opened that file, and behold, the colors displayed as they appeared in DOSBox. After trying to use DOSBox's recording function on a changed-palette mod, I looked at the footage in VLC and was dismayed to find that the colors displayed were default EGA (all the wrong colors). One example: It can't seem to handle palette changes that occur during the video. VLC is a video player that comes built-in with many Linux distros, but it doesn't seem to get along well with the ZMBV video codec that DOSBox uses. Click the box that says "Video", click "Add", press the key you would like to use to toggle video capture, and if you want the shortcut to also require the simultaneous use of Ctrl and Alt (probably a good idea if you don't want to accidentally record video every time you hit your designated key), check the boxes at the bottom of the screen that say "mod1" and "mod2" (these default to "left ctrl" and "left alt", respectively). To assign a different shortcut to DOSBox's video recording, open DOSBox and press Ctrl + F1 (or Ctrl + Fn + F1 if your keyboard requires it) to open the keymapper. It is possible to disable the tty5 so that Ctrl + Alt + F5 does nothing by itself, but it is a lot simpler (and much less risk of messing up something important) to reconfigure DOSBox to use a different shortcut to record video. If you find yourself in this position and want to escape back to the comfort of a graphical environment, press Ctrl + Alt + F7. This is the default key combo that DOSBox uses to start its video capture, which works fine under Windows, but Linux uses this combination to initiate something called tty5, which turns your whole screen into a big scary-looking terminal. This applies no matter how much horsepower your computer has. However, if you're going to be needing any kind of reaction time to play, you'll want to get rid of as much lag as possible.ĭON'T USE CTRL - ALT - F5. As such, if you're going to be recording a calm area with no hazards in the game, you could get away with using the built-in recorder even if it lags because it won't show up in the video. This also applies to other effects external to the actual game emulation, such as DOSBox's fast-forward function. Even for personal use, it's a lot better than screenshots for capturing cool moments! An interesting effect of using the built-in recorder is that any lag caused by the recording process will not be captured in the video file, only showing what was rendered inside of DOSBox's simulation and not how it displayed on your screen. One of my favorite features of DOSBox, and the first screen recorder I had access to. Section I - DOSBOX built-in video recorder Given the variety between different Linux distros, I can't guarantee that these tips will work on any others. It should be noted that all the Linux distributions I have experimented with are Debian-based. In order to hopefully prevent anyone else from dealing with as many headaches as I had to, I'm writing this guide on what I learned. It was an entire ordeal, but where there's a will there's a way, and I've managed to get things set up so that I can record DOSBox's video and audio about as smoothly as I can hope. I'd been able to use DOSBox's built-in recorder with no problems under Windows (the default OS), but there's been a few unique issues that have popped up under Linux and with my specific setup. The thing is 10 years old and wasn't exactly top-of-the-line even when it was new. Now, I want to be able to record gameplay of Commander Keen mods, but here's the problem: my laptop is a potato. I've moved over to Linux, and while I have some experience using it as a live boot for one task or another, using it for my primary operating system is quite a learning curve. ![]() Recently, I finally broke off a longtime relationship with Windows. ![]()
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