![]() ![]() But was able to leverage the eight custom character slots the display allows to build up images from arbitrary 5×8 pixel bitmaps. ![]() Normally, a 16×2 display can only display a single character in each spot, chosen from a fixed character set. But displaying video on a 16×2 LCD is possible, as long as you’re willing to stretch the definition of “video” a bit and use some imagination while watching. They do an admirable job of displaying a few characters, but they don’t exactly spring to mind as a display for non-character purposes. While low-contrast, blue-on-slightly-less-blue 16-character by 2-line LCDs are extremely popular, they really are made specifically for alphanumeric use. Posted in Software Hacks Tagged codec, compression, encoding, ffmpeg, video, web based The ability to manipulate audio and video with just a few keystrokes can really come in handy, and we’ve seen this open-source tool used for everything from compressing podcasts onto floppy disks to overlaying real-time environmental data onto a video stream. Perhaps the best part of the whole tool is that you can then copy your properly formatted command right out of the browser window and into your terminal so you can put it to work on your local files.įFmpeg is one of those programs you should really be familiar with because it often proves useful in unexpected ways. Still, for a filter playground, it gets the job done. Even with the relatively low resolution of the demo videos available, the console output at the top of the page shows FFmpeg sometimes flirts with a processing speed measured in single-digit frames per second. If there was any downside, it seems like whatever box the site is running on the overhead of running in the browser doesn’t provide it a lot of horsepower. ![]() When you want to see the final result, just click “Render Preview” and wait a bit. ![]() Selecting a filter will populate its options on the right hand side, with sliders and input boxes that allow you to play around with their parameters. Here, the input, output, and any enabled filters will show up as boxes that can be virtually “wired” together. To try out a filter, you just need to select one from the window on the left and it will pop up in the central workspace. To try and make this incredible tool a bit less obtuse, has developed a web interface that lets you play around with FFmpeg’s vast collection of audio and video filters. But with this power comes a considerable degree of complexity, and a learning curve that looks suspiciously like a brick wall. If you’re looking to manipulate video, FFmpeg is one of the most powerful tools out there. Posted in Software Hacks, Video Hacks Tagged bleep, censoring, ffmpeg Considering that the point of the 1 kHz back-up alarm beep is to draw a person’s attention to a piece of heavy equipment moving about, there is clearly no good reason why the replacement of a naughty word should warrant a similar drawing of attention. This use of silence for censoring naughty words is incidentally becoming more commonplace over an ear-piercing beep, but a tool like Bleep-be-gone can be used to hasten the demise of its terror. Using a Perl-based wrapper, the versatile ffmpeg framework is used to filter a provided video that was afflicted with bleepitus, before outputting a pristine version where the infernal noise is replaced with blissful silence. There is thus a definite argument to be made to censor the censoring beep to preserve one’s sanity, which is the goal of ’s Bleep-be-gone project on GitHub. Although ostensibly applied to prevent susceptible minds from being exposed to the unspeakable horrors of naughty words, the applied 1 kHz censoring tone is decidedly loud and obnoxious enough that its entertainment level falls somewhere between ‘truck backing up’ and ‘loud claxon in busy traffic’. One of the more interesting cultural phenomena is the ‘bleep’ that replaces certain words in broadcasts, something primarily observed in the US. ![]()
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