Answers.Body: <p>No need to transcode, it can be done via remuxing.</p>
  
  <pre><code>ffmpeg -i in.mp4 -map 0 -c copy -video_track_timescale 30 out.mp4
  </code></pre>
  
  <p>where 30 is the new tbn value.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-11-05T14:32:33.343Z
Answers.LastActivityDate: 2019-11-05T14:32:33.343Z
Answers.UserDisplayName: Gyan
Body: <p>I have the following files (all .mp4). Whenever I want to concatenate them, the timestamps apparently get broken. Is there a way to correct those files with transcoding?
  <a href="https://i.sstatic.net/ramyS.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/ramyS.png" alt="enter image description here"></a></p>
  
Tags: <ffmpeg><editing><video-quality>
Title: How to correct tbn for files with ffmpeg?
UserDisplayName: AlexZheda
ThreadText: # How to correct tbn for files with ffmpeg?
  
  (Asked by: username_0 on 2019-11-05)
  
  I have the following files (all .mp4). Whenever I want to concatenate them, the timestamps apparently get broken. Is there a way to correct those files with transcoding?
  [![enter image description here](https://i.sstatic.net/ramyS.png)](https://i.sstatic.net/ramyS.png)
  
  **Tags:** ffmpeg, editing, video-quality
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2019-11-05. Score: 0 | Accepted answer
  
  No need to transcode, it can be done via remuxing.
  
  ```
  ffmpeg -i in.mp4 -map 0 -c copy -video_track_timescale 30 out.mp4
  
  ```
  
  where 30 is the new tbn value.
  
  
  ---
  
  