Recherche avancée

Sur d’autres sites (9970)

• Finding the time of a thumbnail in a video

  10 mai 2013, par Liam

  I have a large set of pre-generated thumbnails and videos. What is the easiest way to figure out the specific time in the video of the associated thumbnail ?

  I'd imagine that I would have to use something to loop through all the frames in a video to find a match. What libraries should I use ? Something like OpenCV maybe ? ffmpeg ?

  Python is preferred but not required.

• Merge commit ’c9527bf3444c5332fa04931d32997308784fc862’

  23 mars 2017, par Clément Bœsch

  Merge commit ’c9527bf3444c5332fa04931d32997308784fc862’
  * commit ’c9527bf3444c5332fa04931d32997308784fc862’ :
  
    Make the RELEASE file match with the most recent tag
  This commit is noop.
  Merged-by : Clément Bœsch <u@pkh.me>
  

• Line 1 : unknown keyword ' file' ffmpeg

  6 janvier 2024, par pops64

  I am trying to run a concation of multiple files using ffmpeg. Followed directions in docs and getting

  


  Line 1: unknown keyword 'file'
[in#0 @ 000001b09b25e840] Error opening input: Invalid data found when processing input
Error opening input file mylist.txt.
Error opening input files: Invalid data found when processing input


  


  I am not sure what is going wrong. The text file appears to be in the correct format.

  


  $clips = Get-ChildItem -Path Y:\****\Test -File -Filter "*.mp4"
$regex = "(?:\w+)-(?:[i]+-)?(?\d+)-(?\d+)-(?:\w+)"
$groupedScenes = $clips | Group-Object {[regex]::Match($_.Name, $regex).Groups["scene_id"].value}
foreach($scene in $groupedScenes)
{
    $sortedScene = $scene.Group | Sort-Object {[regex]::Match($_.Name, $regex).Groups["clip_id"].value -as [int]} 
    foreach($i in $sortedScene) 
    {
        "file 'Y:\*****\Test\$i'" | Out-File mylist.txt -Encoding utf8 -Append
    }
    .\ffmpeg.exe -f concat -safe 0 -i mylist.txt -map 0 -c:v hevc_amf -quality quality -rc cqp -qp_p 26 -qp_i 26 -c:a aac -b:a 128K -y Y:\*****\Test\Procssed\$sortedScene.mp4
    Remove-Item mylist.txt
}