Audio Bitrate Converter | Change Audio Bitrate with High-Quality Output

Yes, you can boost MP3 bitrate from 128 kbps to 320 kbps using an audio conversion tool like Movavi Video Converter – but there’s an important technical caveat. Bumping the bitrate doesn’t bring back audio data that was thrown out during the original 128 kbps encode. A 128 kbps MP3 converted to 320 kbps will be a bigger file, but it won’t sound any better than the original 128 kbps version – the compression that happened during the first encode is permanent. The output is technically a 320 kbps file (which can be useful when a platform requires that exact setting), but the actual audio quality ceiling stays at whatever was in the 128 kbps source. To genuinely get 320 kbps quality, you need to start with a lossless source – WAV or FLAC – and encode to 320 kbps MP3 for the first time.

To increase MP3 bitrate or update any audio file using Movavi Video Converter, just follow the guide above:

1. Open Movavi Video Converter and click Add Media > Add audio.
2. Select the audio files you want to convert.
3. In the Audio tab, pick your output format – e.g., MP3.
4. Click the Cogwheel button, set Bitrate type to Custom, and enter your target value in the Bitrate (kbps) field – for example, 320 for max MP3 quality.
5. Click Save to in order to pick your output folder, then hit Convert. The conversion runs and your files land at the new bitrate.

Key settings to double-check: bitrate value (kbps), sample rate (44,100 Hz is standard for music), and channel count (stereo for most use cases).

The right audio bitrate depends on what you’re making and who’s listening. Here’s a quick breakdown: 

• 320 kbps is the maximum MP3 quality and sounds identical to CD audio for most people – use it for music masters, high-quality downloads, and archiving.
• 256 kbps is high quality and the default on platforms like Apple Music and YouTube.
• 192 kbps is solid quality for streaming and sounds close to higher rates on standard gear.
• 128 kbps is the minimum acceptable for music and the most common rate for small-file MP3 sharing.
• 64–96 kbps works fine for voice content like podcasts and audiobooks where full musical fidelity isn’t a priority.

Before you change bitrate settings, always check whether your target platform has a recommended or maximum bitrate – YouTube and Spotify both re-encode everything you upload, so going in at 320 kbps just ensures your source is as clean as possible before their own conversion kicks in.

To convert any audio file to 320 kbps in Movavi Video Converter:

1. Add the file via Add Media > Add audio.
2. Select MP3 as the output format in the Audio tab.
3. Click the Cogwheel button to open the output settings.
4. Set Bitrate type to Custom and enter 320 in the Bitrate (kbps) field.
5. Click OK, then hit Convert.

This works for single files and batch queues alike. For the best results, start with a lossless source – WAV or FLAC – if you have one. Converting from lossless to 320 kbps MP3 gives you genuinely high-quality output. If your source is already a lower-bitrate MP3, the output will technically be 320 kbps but the audio quality will be capped by the original. Alternative tools include Audacity – a free open-source tool and browser-based CloudConvert.