# Some transcoded video is missing audio
**URL:** https://discussion.mcebuddy2x.com/t/some-transcoded-video-is-missing-audio/4171
**Category:** Bugs
**Created:** [February 13, 2021, 3:22am UTC](https://discussion.mcebuddy2x.com/t/some-transcoded-video-is-missing-audio/4171 "2021-02-13T03:22:34Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@eric90066](https://discussion.mcebuddy2x.com/u/eric90066)
#### Post date: [February 13, 2021, 3:22am UTC](https://discussion.mcebuddy2x.com/t/some-transcoded-video-is-missing-audio/4171/1 "2021-02-13T03:22:34Z")
**Request Type:**
BUG / NEW FEATURE
\*\*MCEBuddy Version and Type (32bit or 64bit):\*\*MCE Buddy 2.5 beta 5 64bit
**Operating System and Type (32bit or 64bit):** Windows 10 Pro vm 64bit
\*\*Summary of the problem or suggestion:\*\*Transcoded video file is missing audio
**Steps to replicate the bug:** transcode wtv file to mp4
**Screenshots:**
* * *
This does not happen a lot, but just enough to be annoying. For some reason the transcoded video for a show I have recorded using Windows Media Server (on a windows 7 vm) has no audio. The source file is fine, but the newly created file is missing the audio track.
The source is wtv converted to mp4.
I usually end up using another program to convert (sans commercial skip sadly) and it works.
Not sure what to make of it. Log of the most recent occurrence attached.
[Anderson Cooper 360\_CNNHD\_2021\_02\_12\_19\_58\_00.wtv-Convert to MP4-2021-02-12T21-16-01.log.zip](https://discussion.mcebuddy2x.com/uploads/short-url/aUGhZKBdjRpznakVn6Pwi99DInt.zip) (65.6 KB)
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### Author:  [@Goose](https://discussion.mcebuddy2x.com/u/Goose)
#### Post date: [February 13, 2021, 4:14pm UTC](https://discussion.mcebuddy2x.com/t/some-transcoded-video-is-missing-audio/4171/2 "2021-02-13T16:14:05Z")
It looks like ffmpeg is having trouble processing the file while converting it
> 2021-02-12T21:32:20 MCEBuddy.AppWrapper.FFmpeg → [mp4 @ 0000021b5d458100] Cannot write moov atom before AC3 packets. Set the delay\_moov flag to fix this.
> 2021-02-12T21:32:20 MCEBuddy.AppWrapper.FFmpeg → Error writing trailer of D:\MCEBuddy2x\tmp\working0\Anderson Cooper 360\_CNNHD\_2021\_02\_12\_19\_58\_00-converted.mp4: Invalid argument
Can you [upload a copy of the original WTV video](https://discussion.mcebuddy2x.com/t/5076) to our sever so we can replicate it and see what’s going on. [Welcome to MCEBuddy - README BEFORE POSTING](https://discussion.mcebuddy2x.com/t/welcome-to-mcebuddy-readme-before-posting/8)
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### Author:  [@eric90066](https://discussion.mcebuddy2x.com/u/eric90066)
#### Post date: [February 14, 2021, 2:47am UTC](https://discussion.mcebuddy2x.com/t/some-transcoded-video-is-missing-audio/4171/3 "2021-02-14T02:47:50Z")
The source file is too big (7 gigs). Do you have a support email? I can send a link to you using that.