Question 1

How do I convert an MP4 file to AAC?

Accepted Answer

Drag your MP4 file onto the box above, or click Select file to choose it. Click Convert and wait for the progress bar to finish. Click Download to save the AAC file.

Question 2

Is AAC the right format for my MP4 video?

Accepted Answer

Choose AAC only if an app or device asks for .aac files. An .aac file holds the same kind of sound as an M4A file without the container around it. Fewer apps open .aac files. For most uses, MP4 to M4A is the better choice.

Question 3

Does converting to AAC lose quality?

Accepted Answer

Usually not. Most MP4 videos store their sound as AAC. MakeAudio copies that sound into an AAC file exactly as it is, with no re-encoding and no quality loss. Sound in another format, such as Dolby Digital, is converted to AAC at 192 kbps.

Question 4

How big will the AAC file be?

Accepted Answer

When AAC sound is copied as it is, the AAC file is about the same size as the sound track inside the video, usually 1 to 2 MB per minute. Sound that has to be converted is saved at 192 kbps, which takes about 1.4 MB per minute.

Question 5

Why isn't my video accepted?

Accepted Answer

This page accepts MP4 files, whose names end in .mp4 or .m4v. Videos from iPhones are often MOV files, and screen recorders often save WebM or MKV files. Check the end of the file name and use the matching converter: MOV to AAC, WebM to AAC or MKV to AAC.

Question 6

Does the AAC file keep the title, artist and cover art?

Accepted Answer

Yes, when the video has them. Tags such as title, artist and album are copied, along with any cover art. Phone videos and screen recordings usually have no tags. To add or change tags, use Edit AAC metadata.

Question 7

Can I convert only part of the video?

Accepted Answer

This page converts the whole sound track. To keep just one part, convert the video first and then cut the AAC file with Trim AAC file.

Convert MP4 to AAC

Frequently Asked Questions

Frequently Asked Questions

How do I convert an MP4 file to AAC?

Is AAC the right format for my MP4 video?

Does converting to AAC lose quality?

How big will the AAC file be?

Can I convert M4V files from Apple devices?

Which sound is used if the video has more than one audio track?

Why isn't my video accepted?

Does the AAC file keep the title, artist and cover art?

Can I convert only part of the video?

Is it free, and is my video uploaded?

Can I convert a YouTube video or a link?

Does it work on phones, and is there a size limit?

What if my video has no sound or won't convert?