The best audio extractor for extracting audio from video file?

Online audio extractor software often have file size limits and lower quality output due to several reasons:

1. Hosting large files consumes significant server resources and bandwidth. Limiting file size helps prevent server overload and ensures fair access for all users. 
2. Maintaining servers capable of processing very large files or high-volume traffic can be expensive. Imposing size limits reduces operational costs.
3. Processing large files takes more time, which can lead to longer wait times or timeouts, negatively impacting user experience.
4. Many online audio extractor software use default compression settings to minimize file size, which can reduce output quality. Free online tools often use basic encoding algorithms to keep things simple. Advanced encoding options (like higher bitrates or lossless formats) are usually reserved for paid or desktop solutions.
5. Running high-quality encoding requires more processing power. Cloud servers may limit quality to ensure quick turnaround and prevent server strain. Many free services provide basic features for free to attract users, then charge for higher quality, larger files, or faster processing.