Step 7: When you’ve customized all the settings to your liking and are ready to start the compression, click the Start button and your video will begin to compress. Step 6: Check the Web optimized box because your video will be uploaded online. You can make sure it’s been implemented by looking at the Destination File name. Step 5: From the Format drop-down, select MP4 File. Step 4: Select the Destination where the new compressed video will be downloaded into. You will be prompted to drop a file or select a specific folder or file from your computer. Step 3: Upon opening the app select Open Source. Step 2: Click the Handbrake app on your computer to open Step 1: Download the Handbrake app onto your computer ( ) Please follow these steps to use Handbrake to compress your video file… No GUIs, lightning fast, this is just one of those things that the command line does better.* We recommend to keep and use the standard settings as they are in the Handbrake app. Now, I simply invoke rip_m4a_from_mp4 somevideofile.mp4 and I am left with an audio only version with the same filename, ending in m4a instead.
Since I always intend to rip aac audio data out of an mp4 container/video, I wrote a quick little script to do it. I can't believe something like this was so difficult and hidden for so long. Coupled with disabling video via -vn leaves you with a lone audio track inside an mp4 container. ffmpeg will write the audio data out as various supported codecs, but specifying copy leads a bit-for-bit exact copy of the stream. acodec copy: Copy the audio source as-is, here's where all the magic is. vn: Do not record (do not consider) video data. So, after installing ffmpeg, and having the ffmpeg accessible at the command line, I ran a command like this: ffmpeg -i videofile.mp4 -vn -acodec copy audiotrack.m4a Between Rudix, Homebrew, MacPorts, and Fink (does anyone even use fink anymore?), third party software is a snap to install.
I absolutely wanted an as-is version of the audio extracted from the video.įirst off, it's pretty easy to install things like ffmpeg, mplayer, things built off them, and similar open source packages nowadays. I will expand on the question a bit and spell out the fact that I was already working with mp4 contained video/audio, so MP4 Video (.m4v) and AAC Audio (.m4a).
I finally found the exact combination I needed, and I found it in ffmpeg.
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