Recherche avancée

Sur d’autres sites (2956)

• Pick 2 lang stream and one video ffmpeg

  7 juin 2023, par Gwildor

  Please help me. I have try alot of diffrent code to get this to work, but i can't fix it. So now im going to try to get pro help from you :)

  


  I use this code, it works perfect, but it select all audio stream from eng and swe. How can i get only ony stream of eng and swe audio and one video ?

  


  for f in /mnt/re-encode/*/*.mkv_; do /usr/local/bin/ffmpeg -fflags +igndts -analyzeduration 2147483647 -probesize 2147483647 \ -hide_banner -sn -err_detect ignore_err -init_hw_device vaapi=foo:/dev/dri/renderD128 -hwaccel vaapi -hwaccel_output_format vaapi -hwaccel_device foo -i "$f" \ -b:v 6M -minrate 6M -maxrate 6M -bufsize 6M \ -profile:v 100 -level 41 -bf 0 -r film -sn -movflags +faststart+write_colr+prefer_icc \ -map 0:v:0 -map 0:a:m:language:eng? -map 0:a:m:language:swe? -filter_hw_device foo -vf "deinterlace_vaapi,scale_vaapi=w=-2:h=720,hwdownload,format=nv12|vaapi,subtitles='${f%.*}.srt',hwupload" -c:v h264_vaapi \ -c:a:0 aac -ac 2 -af "volume=2" -b:a 256k \ -f mp4 -y -hide_banner "${f%.*}_b.mp4_"

  


  I have tryc pipe : and /dev/null

  


• fftools/ffmpeg_enc : avoid breaking exactly integer timestamps in vsync code

  28 mai 2023, par Anton Khirnov

  fftools/ffmpeg_enc : avoid breaking exactly integer timestamps in vsync code
  The code will currently add a small offset to avoid exact midpoints, but
  
  this can cause inexact results when a float timestamp is exactly
  
  representable as an integer.
  Fixes off-by-one in the first frame duration in multiple FATE tests.
  

  • [DH] fftools/ffmpeg_enc.c
  • [DH] tests/ref/fate/apng-osample
  • [DH] tests/ref/fate/film-cvid
  • [DH] tests/ref/fate/filter-concat-vfr
  • [DH] tests/ref/fate/gif-gray

• In FFmpeg, using -filter_complex, how can I overlay and blend at the same time ?

  20 avril 2023, par Kristian Boruff

  My code works to combine three videos, resize the videos to 1920X1080, resize the watermark to the correct size, and then overlays the watermark to the lower left hand side. Then converts to the intended codecs for Youtube.
My question is how do I Blend at the same time using the -filter_complex workflow ?
Currently, I have the following workflow that does everything but set the opacity

  



  ffmpeg -y -i fancy movie.mov -i logo.png -i in.mov -i out.mov -c:v libx264 -crf 18 -b:v 50000k -preset veryfast -tune film -profile:v high -x264opts cabac=1:keyint=16:bframes=2:keyint_min=15 -c:a libvo_aacenc -ab 128K -ar 48000 -filter_complex "[0:0] scale=1920X1080 [main]; [2:0] scale=1920X1080 [start]; [3:0] scale=1920X1080 [end]; [start] [2:1] [main] [0:1] [end] [3:1] concat=n=3:v=1:a=1 [prog]; [1:0] scale=480:90 [wm]; [prog] [wm] overlay=36:main_h-overlay_h-45" fart.mp4


  



  I'm trying to add "blend=all_opacity=0.7" in the last step so the watermark will screen against the background. If I just add

  



  [prog] [wm] overlay=36:main_h-overlay_h-45, blend=all_mode='overlay':all_opacity=0.7" fart.mp4


  



  I get the error, Cannot find a matching stream for unlabeled input pad 1 on filter Parsed_blend_6

  



  If I try a semicolon instead,

  



  [prog] [wm] overlay=36:main_h-overlay_h-45; blend=all_mode='overlay':all_opacity=0.7


  



  I get the error, Cannot find a matching stream for unlabeled input pad 0 on filter Parsed_blend_6 which makes me think that it's expecting something like [input 1] [input 2] blend command [output]. The problem is that I need it to overlay and blend.

  



  I tried simplifying the code to just test if the blend operation was working properly.

  



  ffmpeg -i test.mp4 -i logo.png -filter_complex "[0:0] scale=1920x1080 [wm]; [1:0] scale=1920x1080 [prog], [wm][prog] blend=all_mode='overlay':all_opacity=0.7" fart.mp4


  



  I got the error First input link top parameters (size 1920x1080, SAR 1:1) do not match the corresponding second input link bottom parameters (1920x1080, SAR 243:80)
Failed to configure output pad on Parsed_blend_2

  



  So, in addition to the trouble with combining of filters, I'm also having an issue with resizing the watermark as FFMpeg sees it as a different aspect ratio than the other videos.

  



  This is my second day with FFmpeg, so any help would be appreciated.

  



  I'm currently working with FFMpeg version N-61061-gf34cceb