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• Error during use of ffmpeg for the joining of images to form a video file

  19 juin 2022, par Commoner

  I am trying to join a sequence of images (*.png) using ffmpeg. The filenames of the images are in the following format : recon_0001.png,  recon_0002.png, ... , recon_0100.png. I would like to join the images sequentially (i.e. recon_0001.png being the first frame, recon_0002.png the second frame and so on.)

  



  After looking at the following link : Python : Make a video using several .png images , I tried to implement my task using the following code :

  



  from __future__ import division
import cv2
import os
import matplotlib.pyplot as plt
from pylab import pcolor, show, colorbar, xticks, yticks
import numpy as np

if(1):
    ffmpeg -f image2 -r 1/5 -i /Users/Username/Folder/recon_%04d.png -vcodec mpeg4 -y movie.mp4


  



  But, I get the following error :

  



  ffmpeg -f image2 -r 1/5 -i /Users/Username/Folder/recon_%04d.png -vcodec mpeg4 -y movie.mp4
               ^
SyntaxError: invalid syntax


  



  What am I missing here ? I am new to the use of ffmpeg and I will really appreciate any help.

  


• Evolution #3671 (Fermé) : enctype multipart/form-data inutile sur formulaire_ecrire_auteur

  19 février 2016, par b b

  Corrigé par http://zone.spip.org/trac/spip-zone/changeset/95234 et reporté en 3.1 par http://zone.spip.org/trac/spip-zone/changeset/95236 :)

• Video portal web form site having issues on Azure server

  18 septembre 2015, par Ahmed Mujtaba

  I have a website built on ASP.NET web forms that works as a media portal for users to upload videos. I’m using ffmpeg encoders to produce video contents to be streamed in the browser. I’m using the web deploy method to publish the site on the Azure server. The website get’s deployed properly however I get following issues in the live site.

  1. Video never get’s encoded and published. I get some sort of error.

  2. Video get’s published but the process of uploading and encoding the video is way too slow on the web server.

  3. The home page of the website has a video wallpaper. The video reference is in the directory videowall that is in the root directory of the project. The video plays fine on the local server but the web server says it couldn’t find the file to play even though it’s present in the ftp root directory.

  My project solution contains upload.ashx that handles the upload requests and makes the call to encode.ashx which is responsible for the encoding and publishing of the videos. I tried to remotely debug the site but the debugger never get’s to encode.ashx.

  I was wondering if these issues can be resolved by having the website deployed with a VM ?