Click Add Media to upload a video or photo and set it as the background.
Upload the audio file that you want to add audio waveform. Click on Add Waveform to Video and tap on Get started. Sign in to Kapwing and click on Tools in the top menu bar. You can edit the style, size, color and position of the waveform. Kapwing is a free audio visualizer that allows you to add waveform to podcasts, lyric videos, or karaoke videos. After finishing the process, click Download MP4 to save the video. Once done, click on Export > Export Video. Click the Playback button to preview the audio waveform. Tip: Select the background image and click Replace image to replace it with your favorite image. Select the waveform element and drop down the Style list in the Edit Sound Wave section. Choose an audio file from your computer and choose a template or start with a blank canvas. Go to the VEED.IO website and click on Upload Your Video. Here’s how to add audio waveform to your audio file. If you want to remove watermark from a video, you need to subscribe to the PRO plan.
It’s free to use without registration required but it will watermark your output videos. Besides that, this sound wave generator lets you add text, emojis, shapes, and progress bar to your project. You can customize the visualization template by changing its color, opacity, duration, Min dB, Max dB, and background image. This would give me the mp3 sound track of that file and then I insert it to another file like I mentioned is an online audio spectrum visualizer with 11 visualization templates like Waves, Beam, Harmony, Formation, etc. Just in case, I extracted the sound from the other language like this: avconv -i "AnotherSoundFile.mp4" Language.mp3 The best part is, since MP4Box does not touch the video quality, it only takes a couple of seconds to add the Track, so I can test very quickly if the Audio delay is perfect or not. This way I can add the original video, insert a new track and even control the sync. The part that has the #audio:delay=300 is to tell MP4Box that this specific new track I am adding is an audio track and I need to add a Delay of 300 ms.The second -add is to add the new track which I called Track2.mp3.The first -add is to add the Original video file.You could put this at the end like "-new Output.mp4" but I wanted to put it in the beginning. The first -new will tell MP4Box a new file will be created.MP4Box is the command to do this and yes it is capitalized.Now proceed with the following command: MP4Box -new -add OriginalMovie.mp4 -add Track2.mp3#audio:delay=300 Output.mp4 You would need to first install gpac package: sudo apt-get install gpac For now this is what I have found (Still looking for the MKV way of doing it):
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