Recherche avancée

Sur d’autres sites (15686)

• converting vr 360 videos to cubic 2x3 format

  21 janvier 2024, par The Anh

  I need to convert vr 360 video to cubic 2x3 format. Usually I use command v360=equirect:c3x2 . But basically it just converts to a cubic square shape with a length, width, and height ratio of 1:1:1. I want to change it so that it can produce 3x2 frames that when merged will create a rectangular box with a different ratio from the original ratio input. For example, length:width:height is 2:1:0.7, for example. I looked for documentation but it seems like few users have done anything about this. I hope you can help me. Thanks a lot

  


  Usually I use command v360=equirect:c3x2

  


• Cut video in chunks at nearest keyframe to the nearest scene change (ffmpeg)

  11 janvier 2024, par Toxiro

  I want to cut a video in let’s say approximately 30 minute chunks. I first want to find the nearest scene change each 30 minutes and then cut at the nearest keyframe to that scene changes (without reencoding).

  


  I guess I can’t do that in a single ffmpeg command, but I maybe here are some pros with very helpful tips. Is it possible for example to just output the nearest scene change (or maybe just the next scene change) at a timecode, so that ffmpeg does not need to analyze the whole video ?

  


  I hope someone can help. If I have a solution, probably a bash script, I will post it here.

  


• How do you compile Winff ?

  3 mai 2015, par Richard

  I downloaded the WinFF source code in the hopes the new version would solve a segfault.

  It’s sitting, extracted, in its folder. But I see no ./configure, nothing make would know what to do with, no binaries, and no compilation instructions :

  $ ls
  
  AUTHORS        COPYING           README-Presets.txt  unit2.lfm  unit4.pas  winff.1      winff.rc
  
  changelog.txt  docs              README.txt          unit2.pas  unit5.lfm  winff.ico
  
  clean.bat      languages         RESOURCES.RC        unit3.lfm  unit5.pas  winff-icons
  
  clean.sh       potranslator.pas  unit1.lfm           unit3.pas  unit6.lfm  winff.lpi
  
  COMPILE.TXT    presets.xml       unit1.pas           unit4.lfm  unit6.pas  winff.lpr

  Does anyone know how I can try to actually compile the code ?

  All we get is a README.txt :

  Winff - graphical video and audio batch converter using ffmpeg or
  avconv Copyright © 2006-2012 Matthew Weatherford
  http://www.winff.org

  This program is free software : you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or (at
  your option) any later version.

  This program is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY ; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program. If not, see http://www.gnu.org/licenses/.

  WinFF is a GUI for the command line video converter FFmpeg or avconv.

  Get the latest ffmpeg builds and source from http://ffmpeg.org/