especificos-videos/back/tasks.py

import time
from subprocess import Popen,PIPE
from rq import get_current_job
import os.path

def long_job(arg):
    for i in range(20):
        time.sleep(1)
        job = get_current_job()
        job.meta['progress'] = i
        job.save()
    #push to db, return id if ok. return error if not ok
    return "37"


def upload_video(title,thumb_path,video_path):
    import youtube_upload.main
    j=get_current_job()
    return youtube_upload.main.main(title,thumb_path,video_path,job=j)

def cut_video(in_fname,start_time,end_time,out_fname):
    if not os.path.isfile(in_fname):
        return { "status":"error",
                 "error": "El archivo %s no existe" % in_fname
               }
    if os.path.isfile(out_fname):
        return { "status":"error",
                 "error": "El archivo %s existe" % out_fname
               }

    process = [ 'ffmpeg',
                '-loglevel', 'error',
                '-stats',
                '-i', in_fname,
                '-ss', start_time,
                '-t', end_time,
                '-c', 'copy',
                '-movflags', '+faststart',
                out_fname
              ]

    out = run_process(process)
    if out == "":
        out = { "status": "Proceso finalizado" }
    return out

def run_process(process = None):
    if process is None or type(process) is not list:
        return { "status": "error",
                 "error": "Argumento process invalido"
               }
    proc=Popen(process, stderr=PIPE, universal_newlines=True)
    while True:
        line = proc.stderr.readline()
        if line != '' and line !=b'':
            job = get_current_job()
            job.meta['progress'] = line.rstrip()
            job.save()
        else:
            break