# MP4 High Quality Conversion Problems
**URL:** https://discussion.mcebuddy2x.com/t/mp4-high-quality-conversion-problems/2989
**Category:** General Support / Questions
**Created:** [July 27, 2019, 4:51pm UTC](https://discussion.mcebuddy2x.com/t/mp4-high-quality-conversion-problems/2989 "2019-07-27T16:51:03Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@play2fast](https://discussion.mcebuddy2x.com/u/play2fast)
#### Post date: [July 27, 2019, 4:51pm UTC](https://discussion.mcebuddy2x.com/t/mp4-high-quality-conversion-problems/2989/1 "2019-07-27T16:51:03Z")
I am having a problem with stuttering video and choppy audio when playing back the mp4 files after converting from the ts file that was saved using nextpvr. Some of the files just stutter and others have what sounds like a directors cut where there are explanations of what is going on in the video as well as the original sound track.
The ts files play with no problems.
The converted files are about three times the size of the files that were converted before this problem started.
I have been using my setup for several years without problems. I am using MCEBuddy 2.3.13
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### Author:  [@RBoy](https://discussion.mcebuddy2x.com/u/RBoy)
#### Post date: [July 30, 2019, 2:32pm UTC](https://discussion.mcebuddy2x.com/t/mp4-high-quality-conversion-problems/2989/2 "2019-07-30T14:32:38Z")
Unfortunately no way to diagnose where the issue lies without looking at the log file and unless you’re running the latest release since there has been over a 1000 new features and bug fixes since 2.3.13
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### Author:  [@play2fast](https://discussion.mcebuddy2x.com/u/play2fast)
#### Post date: [July 30, 2019, 8:23pm UTC](https://discussion.mcebuddy2x.com/t/mp4-high-quality-conversion-problems/2989/3 "2019-07-30T20:23:19Z")
I am uploading my files now.
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### Author:  [@RBoy](https://discussion.mcebuddy2x.com/u/RBoy)
#### Post date: [July 30, 2019, 10:46pm UTC](https://discussion.mcebuddy2x.com/t/mp4-high-quality-conversion-problems/2989/4 "2019-07-30T22:46:22Z")
Your video file is very corrupted, probably caused by a bad recording device (mostly like a new driver or firmware). Cannot debug this any further unless you’re running the latest version since what you’re using is about 6 years old.
> 2019-07-29T05:06:36 MCEBuddy.AppWrapper.FFmpeg → [aac @ 0000000004876aa0] Queue input is backward in time
> 2019-07-29T05:06:36 MCEBuddy.AppWrapper.FFmpeg → [mp4 @ 0000000005764020] st:0 PTS: 14920659 DTS: 14920659 \< 14921172 invalid, clipping
> 2019-07-29T05:06:36 MCEBuddy.AppWrapper.FFmpeg → [aac @ 0000000004876aa0] Queue input is backward in time
> 2019-07-29T05:06:36 MCEBuddy.AppWrapper.FFmpeg → [mp4 @ 0000000005764020] st:0 PTS: 14926291 DTS: 14926291 \< 14926804 invalid, clipping
> 2019-07-29T05:06:36 MCEBuddy.AppWrapper.FFmpeg → [aac @ 0000000004876aa0] Queue input is backward in time
> 2019-07-29T05:06:36 MCEBuddy.AppWrapper.FFmpeg → [mp4 @ 0000000005764020] st:0 PTS: 14929875 DTS: 14929875 \< 14930388 invalid, clipping
> 2019-07-29T05:06:36 MCEBuddy.AppWrapper.FFmpeg → frame= 9334 fps= 50 q=15.0 size= 73396kB time=00:05:11.10 bitrate=1932.7kbits/s dup=5647 drop=0
> 2019-07-29T05:06:37 MCEBuddy.AppWrapper.FFmpeg → Queue input is backward in time
> 2019-07-29T05:06:37 MCEBuddy.AppWrapper.FFmpeg → [mp4 @ 0000000005764020] st:0 PTS: 14956459 DTS: 14956459 \< 14956972 invalid, clipping
> 2019-07-29T05:06:37 MCEBuddy.AppWrapper.FFmpeg → [aac @ 0000000004876aa0] Queue input is backward in time
> 2019-07-29T05:06:37 MCEBuddy.AppWrapper.FFmpeg → [mp4 @ 0000000005764020] st:0 PTS: 14984043 DTS: 14984043 \< 14984556 invalid, clipping
> 2019-07-29T05:06:37 MCEBuddy.AppWrapper.FFmpeg → [aac @ 0000000004876aa0] Queue input is backward in time
> 2019-07-29T05:06:37 MCEBuddy.AppWrapper.FFmpeg → [mp4 @ 0000000005764020] st:0 PTS: 14989675 DTS: 14989675 \< 14990188 invalid, clipping
> 2019-07-29T05:06:37 MCEBuddy.AppWrapper.FFmpeg → [aac @ 0000000004876aa0] Queue input is backward in time
> 2019-07-29T05:06:37 MCEBuddy.AppWrapper.FFmpeg → [mp4 @ 0000000005764020] st:0 PTS: 14993259 DTS: 14993259 \< 14993772 invalid, clipping
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### Author:  [@play2fast](https://discussion.mcebuddy2x.com/u/play2fast)
#### Post date: [July 31, 2019, 4:50am UTC](https://discussion.mcebuddy2x.com/t/mp4-high-quality-conversion-problems/2989/5 "2019-07-31T04:50:44Z")
You say that the video file is very corrupted. Which video file are you talking about? The corrupted .mp4 file or the original .ts file? The .ts file that was recorded by nextpvr plays back without any problems in Microsoft Movies & TV.
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### Author:  [@RBoy](https://discussion.mcebuddy2x.com/u/RBoy)
#### Post date: [July 31, 2019, 12:46pm UTC](https://discussion.mcebuddy2x.com/t/mp4-high-quality-conversion-problems/2989/6 "2019-07-31T12:46:13Z")
This is the log from the original TS file it’s full of timing issues.
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### Author:  [@RBoy](https://discussion.mcebuddy2x.com/u/RBoy)
#### Post date: [July 31, 2019, 2:40pm UTC](https://discussion.mcebuddy2x.com/t/mp4-high-quality-conversion-problems/2989/7 "2019-07-31T14:40:40Z")
While the converted file is playing without stuttering with the latest version of MCEBuddy, there a lot of timing issues which cannot be recovered or corrected in the original file, something you should look into.