Lossless versus lossy audio
FLAC is lossless: playing it back reproduces the original bit for bit. MP3 is lossy: it removes audio data that is very hard to hear and stores the rest efficiently.
On paper FLAC always wins. In practice, 320kbps MP3 is designed so that most listeners cannot hear the missing data on typical equipment.
File size and compatibility
A FLAC file is roughly three times larger than a 320kbps MP3 of the same song. Music players, DAWs and DJ software support it, but not every car stereo, phone app or smart speaker does.
320kbps MP3 plays everywhere — Android, iPhone, cars, radios, DJ controllers and CDJs. If the file should work on anything you own, MP3 is the safe choice.
Why FLAC from YouTube makes no sense
YouTube only streams compressed audio (Opus or AAC). Converting that stream to FLAC would give you a big file with exactly the same sound. A 320kbps MP3 keeps everything the YouTube stream contains at a third of the size.
Which one should I use?
- Everyday listening and YouTube downloads — 320kbps MP3: universal, compact and excellent quality.
- Archiving your own CDs or records — FLAC, if you want a permanent lossless master copy.
- DJing — either works as long as your library is consistent; many DJs standardise on 320kbps MP3. See YouTube MP3 for DJs.
- Sending, uploading or fitting music on a phone — 320kbps MP3.
Not sure about bitrates? Compare 320 vs 192 vs 128 kbps.
Frequently asked questions
Is FLAC better than 320kbps MP3?
Technically yes — FLAC is lossless. But 320kbps MP3 was engineered to be indistinguishable from the source for most listeners, and it is much smaller and plays on every device.
Can YT320MP3 convert to FLAC?
No. YouTube never streams lossless audio, so a FLAC file made from YouTube would only be bigger, not better. YT320MP3 offers 128, 192 and 320kbps MP3.
Is 320kbps MP3 good enough for a home stereo?
Yes. On most home systems 320kbps MP3 is considered high quality and very few people can tell it apart from a lossless source in a normal listening room.