Answers.Body: <p>For tasks like this I like the TMPGEnc tools, try Smart Renderer <a href="https://tmpgenc.pegasys-inc.com/en/product/tmsr5.html" rel="nofollow noreferrer">https://tmpgenc.pegasys-inc.com/en/product/tmsr5.html</a>.</p>
  <p>With these tools you can cut &amp; join files, only re-encoding where the cuts / joins are. I would split the file in 3, preferably on key frames, re-render the edited section as needed, then re-join the files. There are trial versions of the products, just download it and see if it does what you need.</p>
  <p>I don't know of a way to do this in the Adobe products - if anyone else does, let us know! Or possibly there are other free tools to perform this task, I've just always used the TMPGEnc tools for this type of work.</p>
  <p>EDIT: I've also recently become aware of losslesscut, <a href="https://mifi.no/losslesscut/" rel="nofollow noreferrer">https://mifi.no/losslesscut/</a> - sounds like this should also achieve this kind of edit, and is free.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-05-13T04:22:49.210Z
Answers.LastActivityDate: 2023-05-29T07:42:12.507Z
Answers.LastEditDate: 2023-05-29T07:42:12.507Z
Answers.UserDisplayName: Peter Barton
Body: <p>I have a one hour h264-encoded video. The unedited footage can't be found.
  My goal is to edit a small portion of it.</p>
  
  <p>The scenario looks like this. I have to blur out some persons appearing let's say:  <code>00:20:00 - 00:22:00</code>.
  The Video's between <code>00:00:00 - 00:20:00</code> and <code>00:22:01 - 01:00:00</code> are untouched.</p>
  
  <p>Is there a method achieving this without losing quality on unedited footage?</p>
  
  <p>I'm using Adobe Products.</p>
  
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2020-05-13T02:06:17.810Z
Comments.Text: You're going to lose quality when you re-encode, unless you encode to a lossless format, which will make the file an order of magnitude larger.
Comments.UserDisplayName: stib
Tags: <adobe><h.264><export>
Title: Edit small portion of a compressed video without losing quality
UserDisplayName: StackUnderflow
ThreadText: # Edit small portion of a compressed video without losing quality
  
  (Asked by: username_0 on 2020-05-12)
  
  I have a one hour h264-encoded video. The unedited footage can't be found.
  My goal is to edit a small portion of it.
  
  The scenario looks like this. I have to blur out some persons appearing let's say: `00:20:00 - 00:22:00`.
  The Video's between `00:00:00 - 00:20:00` and `00:22:01 - 01:00:00` are untouched.
  
  Is there a method achieving this without losing quality on unedited footage?
  
  I'm using Adobe Products.
  
  **Tags:** adobe, h.264, export
  
  > **Comments:**
  > **username_1**: You're going to lose quality when you re-encode, unless you encode to a lossless format, which will make the file an order of magnitude larger.  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_2 on 2020-05-13. Score: 1
  
  For tasks like this I like the TMPGEnc tools, try Smart Renderer <https://tmpgenc.pegasys-inc.com/en/product/tmsr5.html>.
  
  With these tools you can cut & join files, only re-encoding where the cuts / joins are. I would split the file in 3, preferably on key frames, re-render the edited section as needed, then re-join the files. There are trial versions of the products, just download it and see if it does what you need.
  
  I don't know of a way to do this in the Adobe products - if anyone else does, let us know! Or possibly there are other free tools to perform this task, I've just always used the TMPGEnc tools for this type of work.
  
  EDIT: I've also recently become aware of losslesscut, <https://mifi.no/losslesscut/> - sounds like this should also achieve this kind of edit, and is free.
  
  
  ---
  
  