Recherche avancée

Sur d’autres sites (3553)

• Revision bfdfeb62a7 : Merge "Replacing mi_{width,height}_log2 with num_8x8_blocks_{wide,high}_lookup."

  6 novembre 2013, par Dmitry Kovalev

  Merge "Replacing mi_width,height_log2 with num_8x8_blocks_wide,high_lookup."

• FFMEPG crop : Invalid too big or non positive size for width '1920' or height '1040'

  12 février 2021, par NatePhysics

  I run into a strange issue with a particular file in FFMPEG. When I try and crop it down a little I get :

  


  [Parsed_crop_0 @ 000002ad60c27980] Invalid too big or non positive size for width '1920' or height '1040'
[Parsed_crop_0 @ 000002ad60c27980] Failed to configure input pad on Parsed_crop_0
Error reinitializing filters!
Failed to inject frame into filter network: Invalid argument
Error while processing the decoded data for stream #0:37
Conversion failed!


  


  This is odd to me because you can even see from the stream metadata that the resolution is much higher :

  


  Metadata:
    encoder         : libebml v1.4.0 + libmatroska v1.6.2
    creation_time   : 2021-02-09T22:45:47.000000Z
  Duration: 02:17:48.93, start: 0.000000, bitrate: 8548 kb/s
    Stream #0:0: Video: h264 (High), yuv420p(progressive), **1920x1080** [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)


  


  There's only 1 video stream. I'm running the following command :

  


  ffmpeg -i "wedding.mkv" -filter:v "crop=1920:1040" -c:v libx264 -preset slow -tune film -profile:v high -level 4.1 -crf 19 -c:a copy -c:s copy -map 0 "wedding-cropped.mkv"


  


  I can preview the crop using the following command without any errors :

  


  ffplay -i "wedding.mkv" -vf "crop=1920:960"


  


  I've cropped a few files before without issue. I'm a bit confused as to why I'm getting a resolution error in this case when the video file is clearly higher resolution. I've also tested lowering the cropped resolution and even when I lower both by several hundred pixels it still spits out the same error. Any thoughts or suggestions ?

  


• FFmpeg scale and concat with dynamic height

  21 août 2018, par Praveen Tamil

  Hi below is the code I’m using to concat multiple images.

  ffmpeg -loop 1 -t 1 -i img1.jpeg -loop 1 -t 1 -i img2.jpeg -loop 1 -t 1 -i img3.jpeg 
  
  -loop 1 -t 1 -i img4.jpeg -filter_complex "
  
  [0:v]scale=640:480:force_original_aspect_ratio=decrease, pad=640:480:(ow-iw)/2:(oh-ih)/2[v0];
  
  [1:v]scale=640:480:force_original_aspect_ratio=decrease, pad=640:480:(ow-iw)/2:(oh-ih)/2[v1];
  
  [2:v]scale=640:480:force_original_aspect_ratio=decrease, pad=640:480:(ow-iw)/2:(oh-ih)/2[v2];
  
  [3:v]scale=640:480:force_original_aspect_ratio=decrease, pad=640:480:(ow-iw)/2:(oh-ih)/2[v3];
  
  [v0][v1][v2][v3]concat=n=4"  output.gif

  But I’m getting below issue