If this isn't possible, is there some sort of script which might detect the required quality as it converts files individually? (Of course there is likely to be some extra losses from converting from lossy to lossy file formats, above that which would be expected when converting from a lossless to lossy format.) (At the moment, the files are being converted to about 50k.)ĭoes anyone know how I can do this? What I really want to do is tell ffmpeg to convert all m4a files in a directory into mp3's while retaining the current audio quality as best it can. Similarly it makes no sense to destroy all my 320k files by converting them to something much lower than 96k. It seems to make no sense to force 320k, since some files will become many times larger than they need be. Similarly I don't want to convert using a constant bitrate, such as 320k, because some of the files I am converting are 320k m4a's and some are as low quality as 96k m4a's. I tried doing something simple like: ffmpeg -i FILE.m4a FILE.mp3 but this seems to reduce the bitrate to a very low value, which isn't what I want. ![]() ![]() It can be used on Android and iPhone devices through the internet browser.I have a load of audio files (about 1000) which I want to convert from m4a to mp3 so I can use play them on a CD player which has a USB port. is a website compatible with different operating systems and browsers. The website doesn’t require your credit card details or passwords. doesn’t ask users to share any kind of personal information. Do I need to share my credit card details to use this tool? There is no risk of harming your device by using this website. The files converted using are 100% free of viruses or malware.
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