Question 1

Is my video uploaded to a server?

Accepted Answer

No. The conversion runs entirely in your browser using your device's own video engine. Your file never leaves your computer, and there is nothing for us to store or delete.

Question 2

What bitrate is the MP3?

Accepted Answer

192 kbps, which is transparent for most listening. The audio is decoded from your file and re-encoded to MP3 in your browser.

Question 3

My video has no sound, why did it fail?

Accepted Answer

There has to be an audio track to extract. Screen recordings made without audio won't produce an MP3.

Question 4

Does converting to MP3 lose quality?

Accepted Answer

Slightly, because the audio is decoded and re-encoded. At 192 kbps the difference is inaudible for speech and most music. Use Extract audio and pick M4A if you want a bit-exact copy.

Question 5

Can I convert a whole podcast episode?

Accepted Answer

Long files work but are held in memory while they convert, so a very long recording can exhaust a phone. Use a desktop browser for anything over an hour.

Question 6

Does it keep the title and artist tags?

Accepted Answer

No. The output carries the audio only. Add tags afterwards in your player or music library if you need them.

Question 7

Is it free, and is there a watermark?

Accepted Answer

It is free with no watermark, no sign-up, and no export limit. There is nothing to buy here; the paid plan is on the Recast desktop app, which is a different product.

Question 8

How large a file can I convert?

Accepted Answer

The whole file is held in your device memory, so the ceiling depends on your machine. The upload panel shows the limit it worked out for your device, and it will tell you before it starts rather than failing halfway.

Question 9

Which browsers work?

Accepted Answer

Chrome, Edge, and other Chromium browsers have the broadest support. Firefox and Safari handle some operations. The page probes your browser on load and says plainly if a step is unsupported, so you never wait on a conversion that cannot run.

Question 10

Does it work on a phone?

Accepted Answer

It runs, but a phone has far less memory than a laptop, so keep the file small. For anything long, use a desktop browser.

Question 11

Does it work offline?

Accepted Answer

Once the page has loaded, yes. Nothing is fetched during the conversion, so it keeps working with the connection off.

Question 12

Why is my browser fan spinning?

Accepted Answer

Video work is CPU-heavy and it is happening on your machine rather than on a server. That is the trade for not uploading anything. Closing other tabs helps on a long file.

MP4 to MP3 Converter

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