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• How run 2 script python in same time ?

  28 février 2021, par FoxFr

  I explain my need : i wish to run ffmpeg with a python script (that's ok) but i need to know of the script is launched with a blink led connected on the GPIO of my RPI, But i dont know why i can launch my script and start le blink (or just a led on)

  


  Can u help me ? show me the light, please ;)

  


  import RPi.GPIO as GPIO
import time
import os

GPIO.setwarnings(False)
GPIO.setmode(GPIO.BCM)
GPIO.setup(4, GPIO.OUT)
GPIO.setup(22,GPIO.IN)

# fonction qui fait clignoter la led 
def blink(led):
        GPIO.output(led,True)
        time.sleep(0.5)
        GPIO.output(led,False)
        time.sleep(1)

# input of the switch will change the state of the LED
while 1:
        if ( GPIO.input(22) == True ):
                print "start broadcast"
                os.system("sudo /home/pi/videopi/webcam.sh")
                blink(4) << not ok like this !
                time.sleep(1)


  


• Need help combining commands in to a script to run in Ubuntu

  17 juin 2020, par user298294

  I have a bunch of video files with DTS audio that I need to convert to AC3. I have found commands that can do different parts of the task but I'm not sure how to put it all together to make a script that works. I have found the following script that will convert the audio from all my files to AC3 however I would prefer for it to only convert the DTS audio files to AC3. The script is as follows.

  



  shopt -s globstar
for f in **/*.mkv; 
do 
    fname="${f##*/}"
    ffmpeg -i "$f" -c:v copy -c:s copy -c:a ac3 "/some/directory/$fname" &&
    mv "/some/directory/$fname" "$f"
done


  



  I have also found this command that will return what sort of audio codec the mkv file is using.

  



  `ffprobe -v error -select_streams a:0 -show_entries stream=codec_name -of default=nokey=1:noprint_wrappers=1 input.mkv`


  



  So I'm wondering how I can combine the two to create a script that will do what I want it to do. I'm guessing I can add an if function using ffprobe at the beginning of the script ? Something like this...

  



  shopt -s globstar
for f in **/*.mkv; 
do 
    fname="${f##*/}"
    if ffprobe -v error -select_streams a:0 -show_entries stream=codec_name -of 
       default=nokey=1:noprint_wrappers=1 "$f" | egrep "DTS"; then
       ffmpeg -i "$f" -c:v copy -c:s copy -c:a ac3 "/some/directory/$fname" &&
       mv "/some/directory/$fname" "$f"
    fi
done


  



  Are there any problems with that ? I haven't written scripts since I was in high school playing around with my graphics calculator because I was bored so any help would be greatly appreciated.

  


• Revision 69908 : inserer avant ou car peut etre un script inline et ...

  14 février 2013, par cedric@… — Log

  inserer avant &lt ;link&gt ; ou &lt ;/head&gt ; car &lt ;script&gt ; peut etre un script inline et il devient bloquant derriere ne css