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• ffmpeg shell script to squeeze videos for twitter

  12 juin 2018, par André Levy

  Here’s a pretty rookie attempt at creating a shell script to squeeze videos into twitter’s 140s limitation :

  for f in "$@"
  
  do
  
      /Applications/ffmpeg -i $f -filter_complex "[0:v]setpts=140 / \ 
  
    $(/Applications/ffprobe -i $f -show_entries format=duration -v quiet -of csv="p=0") \
  
    * PTS[v];[0:a]atempo= \
  
    $(/Applications/ffprobe -i $f -show_entries format=duration -v quiet -of csv="p=0") \
  
    / 140[a]" -map "[v]" -map "[a]"  "${f%.*}_twitter.mp4"
  
  done

  It works, but it’s pretty badly written. Can you help me improve it ?

  1. How can I run ffprobe only once ?
  2. Do I need ffprobe at all, or does ffmpeg have the duration of the input amongst its arguments ?
  3. Will it encode faster with other settings (e.g. HW acceleration) ?
  4. Any twitter upload scripts out there to pipe this into ?

  Needless to say, I looked for this answers all around, to no avail.

  Cheers.

• Revision 3810bca9a9 : Fix Android ndk-build Add the config directory to the rtcd generation script. l

  17 avril 2013, par Johann

  Changed Paths : Modify /build/make/Android.mk Modify /libs.mk Fix Android ndk-build Add the config directory to the rtcd generation script. libvpx is configured in the jni directory but ndk-build is intended to be run from the next directory up. Currently it needs to be run from the jni directory (...)

• Tkinter window and script freeze when filedialog is used

  11 décembre 2020, par RandomInternetPerson

  Im developing a audio player for python. Unfortunately, it appears as if after a modification, the file dialog portion of the script ceased working. The code below is a minimum reproducible example of the offending bit.

  


  # -----------------------Setup-----------------------
# Imports
from tkinter import * 
from tkinter.ttk import * 
from tkinter import filedialog

import simpleaudio
import subprocess

# GUI
root = Tk() 
root.title("CupPlayer") 
menubar = Menu(root)
file = Menu(menubar, tearoff = 0)
root.config(menu = menubar)
# ----------------------Functions---------------------
def file_selector(): 
    filename = filedialog.askopenfilename()
    
    root.update()
    if filename.endswith('.mp3'):
            subprocess.call(['ffmpeg', '-i', filename,
                                'audio.wav'])
btn = Button(root, text = 'search file !', bd = '5', 
                          command = file_selector) 

mainloop()