Monthly Archives: April 2020

Flitevox or Flitelib is an open source small run time speech engine. Pass it text and create an audio file with a robot saying it. Really cool and useful for some projects. Flitelib is not a native filter available in … Continue reading →

Tip: You’ll need to enable –enable-libflite for this filter to work.  Generating text to speech is a great feature to have locally on a computer. From using it in a YouTube video to making memes on Twitter, once you learn … Continue reading →

FFmpeg also has the ability to generate sounds or tones natively. With the right kind of scripting you could make chiptune like music straight from the terminal. In this example, generating a single 2000Hz sound for 10 seconds is enough … Continue reading →

Changing the pitch of an audio track means the tempo stays the same but the audio pitch increases/decreases. There isn’t a native way to change the pitch without also changing the playback speed. Luckily, chaining the atempo and asetrate filters … Continue reading →

Changing the tempo of an audio file is easy with atempo. This filter only accepts one value, a number between 0.5 and 100. In this example, the audio tempo is increased by 50%: So how does 1.50 equal 50%? That’s … Continue reading →

Adding an echo (or reflected sound) to an audio track is a great way to add more ambience or smoothness to a choppy playback. It’s a personal desired effect but for how simple it is to use, it’s a nice … Continue reading →

Ever get an audio file that just isn’t loud enough but when the volume is edited it peaks? The solution for this problem is to run the audio through a normalization algorithm. Normalization with loudnorm, uses a true peak loudness … Continue reading →

Part 1: (FFMPEG) HOW TO OBTAIN A YOUTUBE STREAMING KEY? Streaming a local file to YouTube is extremely easy and actually a feature that really takes your FFmpeg skills to the next level with little effort.  With the minimal amount … Continue reading →

Before working on the FFmpeg For Beginners Book, the experience I had with streaming with FFmpeg was zero but I reached out to the FFmpeg community and everyone was saying I needed to cover this topic. Fortunately for me, streaming … Continue reading →

In this section we’ll learn various useful audio filters specifically to audio but all filters will work on video as well. Since this is just an audio section, -af instead of -filter_complex unless multiple audio input sources are required. See … Continue reading →