# Does FMOD change the length of audio files? **URL:** \ **Category:** FMOD Studio\ **Created:** [September 11, 2019, 9:30pm UTC](https://qa.fmod.com/t/does-fmod-change-the-length-of-audio-files/15039 "2019-09-11T21:30:46Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![SassyKeys](https://avatars.discourse-cdn.com/v4/letter/s/41988e/32.png) [@SassyKeys](https://qa.fmod.com/u/SassyKeys)\ **Post date:** [September 11, 2019, 9:30pm UTC](https://qa.fmod.com/t/does-fmod-change-the-length-of-audio-files/15039/1 "2019-09-11T21:30:46Z")
So I’ve bounced down a couple audio files from Reaper with one working as the music introduction, then the second as a looping theme. For some reason the audio files seems to be a different length in FMOD when I import them. They’re totally fine in Reaper, but I can’t get them to fit the grid perfectly in FMOD even when I put in the correct tempo information. It’s as if FMOD is adding length to these audio files. I’m also having a similar problem with some sound fx where once imported, they were slightly delayed when played in FMOD. When I zoom in on the audio files in FMOD I can see a bit of quietness at the start of the audio files which isn’t in the same audio files prior to importing them. Any idea on what is causing this and how to fix it? Thanks. ---
**Author:** ![chrisjdarcy](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/chrisjdarcy/32/172_2.png) [@chrisjdarcy](https://qa.fmod.com/u/chrisjdarcy)\ **Post date:** [September 12, 2019, 10:14am UTC](https://qa.fmod.com/t/does-fmod-change-the-length-of-audio-files/15039/2 "2019-09-12T10:14:56Z")
Is there maybe some lead-in settings on the clips you have in Reaper? ---
**Author:** ![SassyKeys](https://avatars.discourse-cdn.com/v4/letter/s/41988e/32.png) [@SassyKeys](https://qa.fmod.com/u/SassyKeys)\ **Post date:** [September 12, 2019, 11:54am UTC](https://qa.fmod.com/t/does-fmod-change-the-length-of-audio-files/15039/3 "2019-09-12T11:54:48Z")
Nope, it only seems to be when I drag an audio file into FMOD that I have this problem and it’s the same for another person who is using it. ---
**Author:** ![chrisjdarcy](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/chrisjdarcy/32/172_2.png) [@chrisjdarcy](https://qa.fmod.com/u/chrisjdarcy)\ **Post date:** [September 12, 2019, 12:29pm UTC](https://qa.fmod.com/t/does-fmod-change-the-length-of-audio-files/15039/4 "2019-09-12T12:29:12Z")
Is there any common processing between the affected files? ---
**Author:** ![SassyKeys](https://avatars.discourse-cdn.com/v4/letter/s/41988e/32.png) [@SassyKeys](https://qa.fmod.com/u/SassyKeys)\ **Post date:** [September 12, 2019, 12:30pm UTC](https://qa.fmod.com/t/does-fmod-change-the-length-of-audio-files/15039/5 "2019-09-12T12:30:49Z")
Not that I can think off. I had problems with files I added to a multi instrument, then the same issues with files I’m putting straight into Fmod. It seems to be that there is a very short lead-in added to the start of these audio files when I import them into Fmod. ---
**Author:** ![chrisjdarcy](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/chrisjdarcy/32/172_2.png) [@chrisjdarcy](https://qa.fmod.com/u/chrisjdarcy)\ **Post date:** [September 12, 2019, 1:17pm UTC](https://qa.fmod.com/t/does-fmod-change-the-length-of-audio-files/15039/6 "2019-09-12T13:17:09Z")
Have you tried seeing if the problem persists if you use a different DAW to export? ---
**Author:** ![SassyKeys](https://avatars.discourse-cdn.com/v4/letter/s/41988e/32.png) [@SassyKeys](https://qa.fmod.com/u/SassyKeys)\ **Post date:** [September 12, 2019, 1:18pm UTC](https://qa.fmod.com/t/does-fmod-change-the-length-of-audio-files/15039/7 "2019-09-12T13:18:46Z")
Yes the audio files are fine when I bounce and drag it into Reaper, or when I upload to a cloud e.g. soundcloud and dropbox. ---
**Author:** ![chrisjdarcy](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/chrisjdarcy/32/172_2.png) [@chrisjdarcy](https://qa.fmod.com/u/chrisjdarcy)\ **Post date:** [September 12, 2019, 1:26pm UTC](https://qa.fmod.com/t/does-fmod-change-the-length-of-audio-files/15039/8 "2019-09-12T13:26:33Z")
If you take the files that have been imported and trim the silence, does that silence persist when imported again? Also, are these files set to Streaming? Just a punt, but try validating the project, and refreshing modified assets. These are both in the File drop-down. ---
**Author:** ![richard\_simms](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/richard_simms/32/261_2.png) [@richard\_simms](https://qa.fmod.com/u/richard_simms)\ **Post date:** [September 16, 2019, 2:20am UTC](https://qa.fmod.com/t/does-fmod-change-the-length-of-audio-files/15039/9 "2019-09-16T02:20:26Z")
Just to add to Chris’ questions, can you mention what format you have rendered this audio assets to? ---
**Author:** ![SassyKeys](https://avatars.discourse-cdn.com/v4/letter/s/41988e/32.png) [@SassyKeys](https://qa.fmod.com/u/SassyKeys)\ **Post date:** [September 16, 2019, 7:55am UTC](https://qa.fmod.com/t/does-fmod-change-the-length-of-audio-files/15039/10 "2019-09-16T07:55:58Z")
When I trim it it works, but ideally I’d like to be able to have the audio files in as they’re supposed to be. Especially since the FMOD editing can be a bit finicky, although it should be doable. Tried validating the project and no errors present. I also refreshed modified assets to no avail unfortunately. The files aren’t set to streaming either. ---
**Author:** ![SassyKeys](https://avatars.discourse-cdn.com/v4/letter/s/41988e/32.png) [@SassyKeys](https://qa.fmod.com/u/SassyKeys)\ **Post date:** [September 16, 2019, 7:56am UTC](https://qa.fmod.com/t/does-fmod-change-the-length-of-audio-files/15039/11 "2019-09-16T07:56:30Z")
@richard_simms The files are in MP3 format. ---
**Author:** ![richard\_simms](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/richard_simms/32/261_2.png) [@richard\_simms](https://qa.fmod.com/u/richard_simms)\ **Post date:** [September 17, 2019, 12:37am UTC](https://qa.fmod.com/t/does-fmod-change-the-length-of-audio-files/15039/12 "2019-09-17T00:37:15Z")
Audio files rendered to MP3 will always have a tiny bit of padding at the beginning and end added to them. If you reimport the rendered audio file into your DAW is the same padding there? What happens if you render to a different format such as Vorbis OGG? ---
**Author:** ![SassyKeys](https://avatars.discourse-cdn.com/v4/letter/s/41988e/32.png) [@SassyKeys](https://qa.fmod.com/u/SassyKeys)\ **Post date:** [September 17, 2019, 9:42am UTC](https://qa.fmod.com/t/does-fmod-change-the-length-of-audio-files/15039/13 "2019-09-17T09:42:41Z")
Why thank you good sir. You were totally right. I didn’t do Vorbis but I did FLAC and it works perfectly. Thanks so much for the help 🙂 And an added thanks to @chrisjdarcy too!