Answers.Body: <p>There are three reasons I can think of:</p>
  
  <ol>
  <li>The file is (as Andrew suggested) offline. </li>
  <li>The JPEG doesnt have a .jpeg extention (final cut has problems with files that are missing their extension)</li>
  <li>The JPEG resolution is too large. Try sizing the resolution down to under 2000x2000</li>
  </ol>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2013-11-03T23:01:17.407Z
Answers.LastActivityDate: 2013-11-03T23:01:17.407Z
Answers.UserDisplayName: OrangeBox
Answers.Body: <p>Final Cut Pro may not recognize your file location. Did you change the location of the jpg after you imported it into the sequence? If so, you may have to locate it again. </p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2013-08-02T07:15:58.230Z
Answers.LastActivityDate: 2013-08-02T07:15:58.230Z
Answers.UserDisplayName: Andrew Ng
Body: <p>The sequence is composed of a jpg followed by an mp4. When the jpg is not present, after I hit Command + R, the sequence can render without errors. When the jpg is present, after I hit Command + R, the sequence cannot render and it returns a message "File Error: Unknown file."</p>
  
Tags: <editing><final-cut-pro>
Title: Final Cut Pro 7: File Error: Unknown file
UserDisplayName: ffmaer
ThreadText: # Final Cut Pro 7: File Error: Unknown file
  
  (Asked by: username_0 on 2013-08-01)
  
  The sequence is composed of a jpg followed by an mp4. When the jpg is not present, after I hit Command + R, the sequence can render without errors. When the jpg is present, after I hit Command + R, the sequence cannot render and it returns a message "File Error: Unknown file."
  
  **Tags:** editing, final-cut-pro
  
  
  ---
  
  ## 2 answers
  
  ### Answer by username_1 on 2013-11-03. Score: 1
  
  There are three reasons I can think of:
  
  1. The file is (as username_2 suggested) offline.
  2. The JPEG doesnt have a .jpeg extention (final cut has problems with files that are missing their extension)
  3. The JPEG resolution is too large. Try sizing the resolution down to under 2000x2000
  
  
  ---
  
  ### Answer by username_2 on 2013-08-02. Score: 1
  
  Final Cut Pro may not recognize your file location. Did you change the location of the jpg after you imported it into the sequence? If so, you may have to locate it again.
  
  
  ---
  
  