![]() ![]() Likewise, in the instruction -c:v prores, the flag -c:v tells FFmpeg that you want to encode the video stream, and prores specifies which codec is to be used. Flags are always prepended with a hyphen.įor example, in the instruction -i input_file.ext, the -i flag tells FFmpeg that you are supplying an input file, and input_file.ext states which file it is. Subsequently, each instruction that you supply to FFmpeg is actually a pair: a flag, which designates the type of action you want to carry out and then the specifics of that action. After you have installed FFmpeg (see instructions here), the program is invoked simply by typing ffmpeg at the command prompt. QEMU QED: instructions for using QEMU (Quick EMUlator), a command line application for computer emulation and virtualizationįfmpeg-artschool: An AMIA workshop featuring scripts, exercises, and activities to make art using FFmpegĪt its basis, an FFmpeg command is relatively simple. Micropops: One liners and automation tools from Moving Image Preservation of Puget SoundĬable Bible: A Guide to Cables and Connectors Used for Audiovisual Tech The Sourcecaster: an app that helps you use the command line to work through common challenges that come up when working with digital primary sources. Script Ahoy: Community Resource for Archivists and Librarians Scripting This work is licensed under a Creative Commons Attribution 4.0 International License. For a little more context presented in an ffmprovisr style, try ! License Tutorialsįor FFmpeg basics, check out the program’s official website.įor instructions on how to install FFmpeg on Mac, Linux, and Windows, refer to Reto Kromer’s installation instructions.įor Bash and command line basics, try the Command Line Crash Course. This page does not have search functionality, but you can open all recipes (second option in the sidebar) and use your browser's search tool (often ctrl+f or cmd+f) to perform a keyword search through all recipes. You can copy this command and understand how the command works with a breakdown of each of the flags. A new window will open up with a sample command and a description of how that command works. To use this site, click on the task you would like to perform. This app helps users through the command generation process so that more people can reap the benefits of FFmpeg.Įach button displays helpful information about how to perform a wide variety of tasks using FFmpeg. Unfortunately, it also has a steep learning curve, especially for users unfamiliar with a command line interface. Their transcription feature can be used for free upload a video or audio file, and within a few minutes, you can read or download the transcribed text.FFmpeg is a powerful tool for manipulating audiovisual files. I tested the same files on Welder that I used with Dictation, and Welder was better about adding punctuation and separating multi-person interviews. Pop over to QuickTime Player, and play your audio or video file, and watch as the words are transcribed as if by magic!Īlternative: Welder (or other online services)Īs an alternative, you could use an online upload-to-transcribe service like Welder. Then go back to TextEdit, and in a new document, activate Dictation using your configured shortcut (e.g. In there, choose the new 'Transcription Device' sound input: Quit Loopback (the device will still be present on the system after quitting), then go back to the Dictation settings in System Preferences. Delete the default Pass-thru source, and add in Quicktime Player as a new source: ![]() If you have Rogue Amoeba's Loopback, you can also use it to route the audio signal internally, so you don't have to have audio playing out through the speakers.Īfter you have Loopback installed and running, create a new device called 'Transcription Device'. Bonus: Routing audio internally on the Mac with Loopback The mic should pick up the audio and start transcribing live into the open document. ![]() press the dictation key), then start playing back your audio file through your Mac's speakers. Make sure you have your Mac's microphone selected, then open up TextEdit and create a new document:Īctivate the dictation shortcut (e.g. You'll use that to activate dictation later. 'press dictation key' or 'press control twice'. Turn on Dictation, and when prompted, accept the terms for Apple's Dictation service. These instructions were last updated for macOS Monterey 12.4.įirst, open up System Preferences, go to Keyboard, then the 'Dictation' tab: ![]() You can use the Dictation feature built into your Mac to transcribe audio files, and in my experience, it's been about 98-99% accurate, so it saves a lot of time if you want to index your audio files, or you need a transcript for some other purpose. ![]()
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