Answers.Body: <p>Yes, the videos are broken. They are created due to an overheat and some kind of built-in reduction of the recorded video to FullHD; but the resolution of the result is still 4K, and the last filled content of the 4K buffer is used to fill the bottom large part (hence the repeating).</p>
  
  <p>Still, it's possible to get a FullHD video from the broken file:</p>
  
  <pre><code>FILTER='
  [in] split [a][b]; 
  [a] crop=1920:540:0:0 [ac]; 
  [b] crop=1920:540:1920:0 [bc]; 
  [ac][bc] vstack [stack];
  [stack] il=luma_mode=interleave:chroma_mode=interleave'  
  
  if [ "$2" != "" ] ; then
    ffplay -i "$INPUT" -vf "$FILTER"
  else
    set -x
    ffmpeg -i "$INPUT" -filter:v "$FILTER" $QUALITY_GOOD_H265 -c:a copy "$NEW_NAME" \
    &amp;&amp; touch "$NEW_NAME" -r "$INPUT"
    set +x
  fi
  </code></pre>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-04-14T23:14:23.777Z
Answers.LastActivityDate: 2020-04-14T23:55:54.963Z
Answers.LastEditDate: 2020-04-14T23:55:54.963Z
Answers.UserDisplayName: Ondra Žižka
Body: <p>I have recorded some 4K videos as MP4 file on Panasonic VX878 and 9xx. Both produce a video which, when played in VLC or other player on Linux, has 3 tiles: 2 next to each other horizontally at the top 20 % of the canvas, both displaying the actual video, and the rest displays the 1st second of the video, looping.</p>
  
  <p>I wonder where is the issue: In the player on in the camera? When I played the video in the camcoder's playback, it looked fine.</p>
  
  <p><a href="https://i.sstatic.net/a7m05.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/a7m05.png" alt="enter image description here"></a></p>
  
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2019-09-22T09:27:44.340Z
Comments.Text: This will be hard to answer without the file. Please upload it somewhere and provide a link to the file. I would guess it is a problem with the player - not the camera if the camera can playback normaly
Comments.UserDisplayName: Timothy Lukas H.
Tags: <playback><4k><formats><panasonic>
Title: 4K video from Panasonic VC8xx broken?
UserDisplayName: Ondra Žižka
ThreadText: # 4K video from Panasonic VC8xx broken?
  
  (Asked by: username_0 on 2019-09-03)
  
  I have recorded some 4K videos as MP4 file on Panasonic VX878 and 9xx. Both produce a video which, when played in VLC or other player on Linux, has 3 tiles: 2 next to each other horizontally at the top 20 % of the canvas, both displaying the actual video, and the rest displays the 1st second of the video, looping.
  
  I wonder where is the issue: In the player on in the camera? When I played the video in the camcoder's playback, it looked fine.
  
  [![enter image description here](https://i.sstatic.net/a7m05.png)](https://i.sstatic.net/a7m05.png)
  
  **Tags:** playback, 4k, formats, panasonic
  
  > **Comments:**
  > **username_1**: This will be hard to answer without the file. Please upload it somewhere and provide a link to the file. I would guess it is a problem with the player - not the camera if the camera can playback normaly  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_0 on 2020-04-14. Score: 0 | Accepted answer
  
  Yes, the videos are broken. They are created due to an overheat and some kind of built-in reduction of the recorded video to FullHD; but the resolution of the result is still 4K, and the last filled content of the 4K buffer is used to fill the bottom large part (hence the repeating).
  
  Still, it's possible to get a FullHD video from the broken file:
  
  ```
  FILTER='
  [in] split [a][b]; 
  [a] crop=1920:540:0:0 [ac]; 
  [b] crop=1920:540:1920:0 [bc]; 
  [ac][bc] vstack [stack];
  [stack] il=luma_mode=interleave:chroma_mode=interleave'  
  
  if [ "$2" != "" ] ; then
    ffplay -i "$INPUT" -vf "$FILTER"
  else
    set -x
    ffmpeg -i "$INPUT" -filter:v "$FILTER" $QUALITY_GOOD_H265 -c:a copy "$NEW_NAME" \
    && touch "$NEW_NAME" -r "$INPUT"
    set +x
  fi
  
  ```
  
  
  ---
  
  