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• Accessibility to Web video for the Vision-Impaired

  12 décembre 2010, par silvia

  In the past week, I was invited to an IBM workshop on audio/text descriptions for video in Japan. Geoff Freed and Trisha O’Connell from WGBH, and Michael Evans from BBC research were the other invited experts to speak about the current state of video accessibility around the world and where (...)

• Unable to run ffmpeg with qProcess to extract a single frame from Vide

  24 janvier 2018, par user3840315

  I am trying to extract a single frame from a video using the QProcess in qt framework and ffmpeg and store it in a tmp folder. When I run the program in terminal command line it is able to extract it but not when QProcess runs it. I’m developing on a mac. What am I doing wrong.

  QString extractSingleFrame(QString videoPath, QDir tmpDir)
  
  {
  
      QString program = ffmpegPath();
  
      QProcess *ffmpegProcess = new QProcess();
  
      QString arguments;
  
      QFileInfo videoInfo(videoPath);
  
      QString videoName = videoInfo.fileName();
  
  
  
      QString firstFrameName(tmpDir.absolutePath() + "/" + videoName + ".jpg");
  
      arguments = " -y -i " + QDir::toNativeSeparators(videoPath)
  
                  + " -frames:v 1 -q:v 1 -f image2 " + QDir::toNativeSeparators(firstFrameName);
  
  
  
      QFile::remove(firstFrameName);
  
      qDebug() << "Starting program" << program + arguments;
  
      ffmpegProcess->start(program + arguments);
  
      // ffmpegProcess->start(program , QStringList() <<  arguments); this also doesnt work
  
      if (ffmpegProcess->state() == QProcess::Starting){
  
         qDebug() << "program is starting" + ffmpegProcess->state();
  
      }
  
      ffmpegProcess->waitForFinished(-1);
  
  
  
      qDebug() << "done";
  
  
  
      delete ffmpegProcess;
  
  
  
      return firstFrameName;
  
  }

  This is the printed command
  to start the program "ffmpeg -y -i "/Users/userX/test.mov" -vframes 1 -q:v 1 -f image2 "/var/folders/s1/vtv2cx36p3h0000gn/T/test-ywDBgj/test.mov.jpg""

• Is there a way to use the ffmpeg binary/unix executable in a py2app application to run ffmpeg on computers without it installed ?

  4 mars 2021, par Human

  I wrote a small python script that is essentially just a text to speech script. It uses the pydub - audiosegment python library to convert the mp3 from gTTS to an ogg that can be played in pygame. A link to my github repository can be found here : https://github.com/AnupPlays/TTS

  


  this is the main function :

  


  def webscrape():
    global x
    global b
    b.state(['disabled'])
    src = "sound.mp3"
    dst = "sound.ogg"
    murl = str(url.get())
    response = requests.get(murl)
    response.raise_for_status()

    parse = bs4.BeautifulSoup(response.text, 'html.parser')
    x = str(parse.get_text())
    print(x)
    text = gTTS(x)
    text.save("sound.mp3")
    AudioSegment.from_mp3(src).export(dst, format='ogg')
    b.state(['!disabled'])


  


  this is a list of my imports :

  


  #Imports
import os
import sys
import pygame

#google text to speech
from gtts import gTTS

#requests and BeautifulSoup
import requests
import bs4

#pygame audio player
from pygame import mixer

#tkinter ui
from tkinter import *
from tkinter import ttk
from tkinter import filedialog
from tkinter import messagebox

#mp3 -> wav
from os import path
from pydub import AudioSegment