Python Monitoring Progress Of Handbrake

So I am using handbrake and python to encode videos based on a schedule. I need to monitor the progress because I use it to estimate the encoding time. Then I can fit it to my sche

Solution 1:

You need to read from stdout, not stderr.

profile = ["HandBrakeCLI","-i",input,"-o","output","-e","x264"]
cp = subprocess.Popen(profile, stderr=subprocess.PIPE, strout=subprocess.PIPE, bufsize=1)
for line initer(cp.stdout.readline, b''):

  # regex match for % complete and ETA
  matches = re.match( r'.*(\d+\.\d+)\s%.*ETA\s(\d+)h(\d+)m(\d+)s', line.decode('utf-8') )

  if matches:
    print( matches.group() )

  print(line),

cp.stderr.close()
cp.stdout.close()
cp.wait()

Using a progress wrapper (using clint.textui.progress.Bar) and read byte by byte (works for me):

profile = ["HandBrakeCLI","-i",input,"-o","output","-e","x264"]
cp = subprocess.Popen(profile, stderr=subprocess.PIPE, strout=subprocess.PIPE, close_fds=True)
bar = Bar(label="Encoding %s" % input, width=30, expected_size=10000, every=1)
bar.show(0)

line = ""
c = 0whileTrue:    
  nl = cp.stdout.read(1)
  if nl == ''and cp.poll() isnotNone:
     break# Aborted, no characters available, process died.if nl == "\n":
     line = ""elif nl == "\r":
     # regex match for % complete and ETA, assuming the regex is ok.
     matches = re.match( r'.*(\d+\.\d+)\s%.*ETA\s(\d+)h(\d+)m(\d+)s', line.decode('utf-8') )

     if matches:
        print( matches.group() )
        # do something
     line = ""else:
     line += nl

error = cp.stderr.read()
success = "Encode done!"in error

Did not test the code, rewrote it to match the threads initial post.

Hope that helps.

Solution 2:

There are good bones here. However, I had to make a few modification to make it work with Python 3.7 and PyQt5. The ui lines are for a PyQt5 QProgressBar and a QLineEdit

This code has been tested. I thank all of you for your help.

def hbConvertISOtoMP4():

line = ""
inFile = #place your input file here!
oFile =  #place your output file here!

ui.progressBar.setValue(0)
profile = ["HandBrakeCLI", "-t", "1", "-i", inFile, "-o", oFile, "-e", "x264"]
cp = Popen(profile, stderr=PIPE, stdout=PIPE, close_fds=True)

ui.leProgress.setText('Loading data... Please Wait.')
ui.centralwidget.repaint()

whileTrue:
    nl = cp.stdout.read(1)

    if nl == ''or cp.poll() isnotNone:
        break# Aborted, no characters available, process died.elif nl.hex() == '0d'andlen(line) > 30:

        # regex match for % complete and ETA, assuming the regex is ok.
        matches = re.match(r'.*(\d+\.\d+)\s%.*ETA\s(\d+)h(\d+)m(\d+)s\)', line)

        if matches:
            # do something here# I inserted this code for a PyQt5 Progress Bar UI
            ui.leProgress.setText(line)
            ui.centralwidget.repaint()
            pBar = matches.group().split(' ')
            ui.progressBar.setValue(int(float(pBar[5])))

        line = ""else:
        line += nl.decode('utf-8')

error = cp.stderr.read()

if'Encode done!'instr(error):
    ui.progressBar.setValue(0)
    ui.leProgress.setText("Encode Done!")
else:
    ui.leProgress.setText('Error during Endoding')