Answers.Body: <p>As long as the streams have the same properties - resolution, pixel format, timebase, reference frame count, then they can be concatenated by ffmpeg. Strictly speaking, FFmpeg will concat non-matching streams, only throwing warnings for discontinuous timestamps in the input streams, but that output will not be accepted by most (or any) players.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2016-12-05T11:11:37.910Z
Answers.Text: Indeed, it worked flawlessly with this command: `ffmpeg -f concat -i mydnxhrfiles.txt -c copy result.mov`
Answers.UserDisplayName: dforce
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Answers.CreationDate: 2016-11-22T09:51:11.390Z
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Answers.LastEditDate: 2020-11-06T12:49:31.923Z
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Body: <p>is it possible to precisely concatenate multiple DNxHR (HQ) videos into one without re-encoding?</p>
  
  <p>It seems that <a href="https://trac.ffmpeg.org/wiki/Concatenate" rel="nofollow noreferrer">ffmpeg can only handle MPEG streams</a>.</p>
  
Tags: <ffmpeg>
Title: Joining / Concat DNxHR HQ *without* re-encoding
UserDisplayName: dforce
ThreadText: # Joining / Concat DNxHR HQ *without* re-encoding
  
  (Asked by: username_0 on 2016-11-22)
  
  is it possible to precisely concatenate multiple DNxHR (HQ) videos into one without re-encoding?
  
  It seems that [ffmpeg can only handle MPEG streams](https://trac.ffmpeg.org/wiki/Concatenate).
  
  **Tags:** ffmpeg
  
  
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  ## 1 answers
  
  ### Answer by username_1 on 2016-11-22. Score: 3 | Accepted answer
  
  As long as the streams have the same properties - resolution, pixel format, timebase, reference frame count, then they can be concatenated by ffmpeg. Strictly speaking, FFmpeg will concat non-matching streams, only throwing warnings for discontinuous timestamps in the input streams, but that output will not be accepted by most (or any) players.
  
  > **Comments:**
  > **username_0**: Indeed, it worked flawlessly with this command: `ffmpeg -f concat -i mydnxhrfiles.txt -c copy result.mov`  
  
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