Recherche avancée

Sur d’autres sites (8239)

• Converting a sequences of images to a video with ffmpeg

  3 mars 2014, par lnepal

  I'm trying ffmpeg to convert sequence of images to a single video, but nothing happened and no any error message is shown. Below is the shell command I've used (invoked via PHP's shell_exec) :

  ffmpeg -i events/dream_theatre.jpg events/output.avi &

  I just want to test first with single image and trying this in shared hosting server. No error message or any message is shown with this. I've a root access to server machine.

• Conversion of .dav [Ubuntu]

  3 juin 2018, par Dauas

  I’ve installed ffmpeg on a Ubuntu Linux Amazon EC2 Server and have a Lorex FLIR NVR directly FTP transferring .DAV files to it. In this system a Java program would then tell the EC2 to convert the .dav to but this is where the problems begin, FFMPEG fails to convert the .dav file and to my surprise there is no Codec for .dav (Though I see mention of it once having been supported). I reach out for a solution to this File Format problem, unfortunately the .dav files are a given as the NVR I have is incapable of transfering any other data type over the web, but what is the best way to convert a .dav file on a linux machine ? My Java program has full access to the Shell. It would also be incredibly helpful if anybody were to know how to get their hands on a .dav codec I could test with ffmpeg. I very much value all of your time helping me on this issue.

• ffmpeg.probe not working when run from python on windows 10

  24 octobre 2022, par Skurian25

  I am relatively new to python, I am working on extracting some metadata from a video and I am trying to use ffmpeg.probe (or ffprobe) because it provides all the data I need.

  


  After many errors I went to the basic and tried :

  


  import ffmpeg
import json

movie_path="E:\Archive\Peliculas\Clasicos\Casablanca.avi"
probe = ffmpeg.probe(movie_path)


  


  The error that I get is :

  


  Traceback (most recent call last):&#xA;  File "C:\Users\xxx\Desktop\test.py", line 5, in <module>&#xA;    probe = ffmpeg.probe(movie_path)&#xA;  File "C:\Users\xxx\AppData\Local\Programs\Python\Python310\lib\site-packages\ffmpeg\_probe.py", line 20, in probe&#xA;    p = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE)&#xA;  File "C:\Users\xxx\AppData\Local\Programs\Python\Python310\lib\subprocess.py", line 966, in __init__&#xA;    self._execute_child(args, executable, preexec_fn, close_fds,&#xA;  File "C:\Users\xxx\AppData\Local\Programs\Python\Python310\lib\subprocess.py", line 1435, in _execute_child&#xA;    hp, ht, pid, tid = _winapi.CreateProcess(executable, args,&#xA;FileNotFoundError: [WinError 2] The system cannot find the file specified&#xA;</module>

  


  I have been searching around and tried installing and uninstalling ffmpeg, ffmpeg-python, installing it directly on windows (adding the files to the path so that I can run it in the console). Then tried to do it on my own using the _probe.py as example :

  


  p = subprocess.Popen(['ffprobe', '-show_format', '-show_streams', '-of', 'json', 'E:\Archive\Peliculas\Clasicos\Casablanca.avi'], stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True) #shell=True is not present in _probe.py  but it wont run otherwise
out, err = p.communicate()


  


  The error returned is : b'"ffprobe" is not recognized as an internal or external command, \r\n program, or executable batch file.\r\n' but runs, it is not the "FileNotFoundError"

  


  When I run it in cmd there is no issue, ffprobe -show_format -show_streams -of json E :\Archive\Peliculas\Clasicos\Casablanca.avi provides the information (with a couple of lines before the JSON but works).

  


  I don't know if it is a windows thing (I have tried both \ and \ already with no apparent difference) or I am doing wrong.