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Posted by Reuben Zaback - Contact Author

How to Reduce FLAC/MP3/WAV Audio File to Smaller Size Losslessly?

Have you ever tried to upload an audio post but failed because the source audio file is too large? Do you know how much the storage space of your PC or phone has been taken by your loved songs and audio recordings? If you do, then you know how important to reduce the size of the audios, especially the one in lossless codecs. Now, follow my steps and compress your large MP3/FLAC/WAV file down to a much smaller size fast with ease.

What is the Efficient Way to Compress Any Audio Files to Smaller Size?

You can shrink the audio file size by trimming the unwanted part of course. However, tedious work it is because you have to listen to each audio, again and again, to confirm which part you should keep or leave. Besides, the audio length is not the only factor that will decide the length of an audio file. Audio codecs and parameters matter too. That is why you could often find two songs in the same length, but different they are in size.

Taking various factors into consideration, there are two efficient ways through which you can perform the audio file compression: 1) Convert audio files from lossless formats to lossy formats. 2) Adjust the audio parameters by reducing the bit rate/sample rate.

Looking to Compress Any Large Audio to Smaller Size? VideoProc is just the Way to Go.

You can apply both two methods to compress audio files by using the best audio converter- VideoProc. As an all-in-one software for audio and video processing, VideoProc has lots of quality features.

  • 1. Support to convert audio or video from or to all most all popular formats including AAC, FLAC, MP3, WAV, etc.
  • 2. Merge many auidos into one in just one click.
  • 3. Rich presets and initiative interface allows you to easily adjust all audio parameters without knowing the difficult terminologies.
  • 4. Works 5X faster than a similar audio converter thanks to the applied of GPU acceleration technology.
  • 5. Download and install VideoProc so that you can easily compress your songs or audio recordings in just a few clicks.

  • Free Download VideoProc to Shrink Large Audio Files in One Click

    How to Shrink Audio Files with No Quality Loss?

    Transcode audio formats or adjust the audio parameters? Which method you use to compress the audios depends on the codec of the source file. Transcoding audio format refers to "lossless to lossy" or "lossy to lossy" audio compression. Parameter adjustment refers to "lossy to lossy" audio resize only. So before the tutorial, let's figure out what lossless and lossy audio formats are.

    What is Lossless Audio Format?

    These formats are totally or nearly 50-70% compression-free. The output audio quality remains large and similar to the original file. The most common lossless codecs are ALAC, Ape, FLAC, TAK, TTA, WAV, MPEG-4 ALS, LPAC, and MAV. To take FLAC as an example, so if we transcode FLAC to MP3 then it would be a 'Lossless to Lossy' audio compression.

    What is Lossy Audio Format?

    Lossy formats are highly compressed audio formats. Here the most suitable example will be MP3 that you can find almost everywhere around you. Lossy audio formats use codecs to compress the original audio file while stripping most of its original sound quality, though MP3 compresses audio files satisfactorily. MP3, AAC, M4A, Ogg Vorbis, Opus are 4 the most common lossy formats. That is to say, whenever you transcode MP3 to AAC or M4A, it would be a 'Lossy to Lossy' audio compression process.

    Strapped for time? Click one of the links below to jump straight to your most interested part.

    Part 1: How to Compress the Audio File by Transcoding Audio Format?

    If your audio file is in lossless formats, follow this step-by-step tutorial to convert it to lossy formats

    After downloading and installing VideoProc on your PC (VideoProc for Windows )or Mac ( Download VideoProc on Mac ), you are free to go. Here's the rundown of guides and tips for resizing the audio file by transcoding audio format.

    Step 1: Load the source audio file to an audio converter

    Open VideoProc and click 'Video' on the first screen. Click '+Music' to load your audio file(s) having any format like MP3, FLAC, WAV, etc. Of course, you can load multiple files at once for batch processing

    Step 2: Select lossy codec as output formats

    Click Target Format > Music, and then select the desired output audio format. Tips: Click + to find more output audio profiles if necessary.

    Step 3: Transcode audio from lossless formats to lossy formats

    Click Done to go back, and then hit Run to start the transcoding with default or customized audio settings. The output folder will pop up when finished conversion.

    Compress Any Auido

    Below is a list of different results that were achieved after transcoding one audio format to another. AAC and M4A are both nice output format options, but AAC is more recommended as it is more compatible with the endplay device.

    Input Lossy Format

    Output Format

    File Format

    MP3

    M4A

    AAC

    WAV

    FLAC

    File Size

    7.1MB

    2.8MB

    2.8MB

    30MB

    35MB

    Input Lossless Format

    Output Format

    File Format

    FLAC

    MP3

    M4A

    AAC

    WAV

    File Size

    8.6MB

    907KB

    953KB

    2.33MB

    10.1MB

    Part 2: How to Compress Lossy Audio Files by Reducing Sample/Bit Rate?

    To make proper adjustment in audio parameters can help enhance the original audio quality and compress the file size. This method is exclusively for lossy formats only, so the host audio file should already be in a compressed format like MP3, AAC, etc. The parameters we are going to change are sample rate and bit rate.

    Optional reading: What is the sample/bit rate and how they influence the audio file size?

    Bitrate means the amount of data transferred at a given time, and the sample rate refers to the number of samples of audios read by the computer every second. If we take audio like a big cake compositing of many small pieces, then the bit rate refers to how large each piece and sample rate refers to the number of pieces. Bit rate influences the audio file size most while the sample rate can decide the video quality.

    Keep reading to find the step-by-step tutorial for reducing the lossy audio file size to a smaller one by VideoProc

    Note: The input and output audio formats will be the same as we are not changing their codecs.

    Step 1: Import Your Source Audio File

    Open VideoProc and load only lossy audio files like MP3.

    Step 2: Adjust Auido Bit/Sample Rate

    Click the Codec Option button to open audio settings. Change the audio parameters like bit-rate, and sample-rate to lower values. Click Done to go back.

    Step 3: Start to Compress the Auido

    Click Run to start compressing your audio files with the lowest possible audio parameter settings. Check the output folder after conversion.

    Note 1: The lower the bit rate, the smaller the file size. Below tabular data shows the output MP3 file size under different bit rates. You can find the file size is gradually decreasing as the bit rate goes lower.

    Before Conversion

    After Conversion

    MP3 Audio Bit Rate

    Original - 128 kbps

    112kbps

    96kbps

    80kbps

    48kbps

    File Size

    7.1MB

    2.7MB

    2.06MB

    1.73MB

    1.02MB

    Note 2: In the table below you can see same file size values from 48000Hz to 16000Hz. However, there is a difference in size but it is of few bytes only because we kept the same 128kbps bit-rate and changed the sample rate only. So, for the lowest audio compression you should also lower the bit-rate.

    Before Conversion

    After Conversion

    MP3 Audio Sample Rate

    Original - 44100Hz

    48000Hz

    32000Hz

    22050Hz

    16000Hz

    Output Size

    7.1MB

    2.7MB

    2.7MB

    2.7MB

    2.7MB

    Final Thought

    VideoProc is a beginner-friendly audio processing freeware, with which you can compress, merge, convert your audio file, then sharing it on audio post site, YouTube, etc. The audio parameter is fully customized with easy-to-follow instruction. Besides, it is a professional video processor and converters so that you can convert videos from any formats to MP4/AVI/MOV/MKV, etc.

    Free Download VideoProc to Compress Any Large Auido File to Small Size

    ABOUT THE AUTHOR

    Reuben Zaback

    Hi, I'm Reuben Zaback and I've been an award-winning editor of Digiarty for four years. Writer by day and reader by night, I share programs reviews and tutorials, multimedia solutions, latest tech trends, devices tips, etc. I geek out over Apple products, sports cameras, drones, gadgets and always look to learn something new. My spare time is dominated by sports rehab and part-time study.

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