diff --git a/ffmpeg_streaming/_process.py b/ffmpeg_streaming/_process.py
index 43e0456..0c8d7f1 100644
--- a/ffmpeg_streaming/_process.py
+++ b/ffmpeg_streaming/_process.py
@@ -25,7 +25,7 @@ def _p_open(commands, **options):
 """
 @TODO: add documentation
 """
- logging.info("ffmpeg running command: {}".format(commands))
+ logging.info(f"ffmpeg running command: {commands}")
 return subprocess.Popen(shlex.split(commands), **options)
 
 
@@ -44,16 +44,12 @@ def __init__(self, media, commands: str, monitor: callable = None, **options):
 'stdin': None,
 'stdout': subprocess.PIPE,
 'stderr': subprocess.STDOUT,
- 'universal_newlines': False
- }
- default_proc_opts.update(options)
- options.update(default_proc_opts)
+ 'universal_newlines': False,
+ } | options
+ options |= default_proc_opts
 if callable(monitor) or isinstance(getattr(media, 'key_rotation'), HLSKeyInfoFile):
 self.is_monitor = True
- options.update({
- 'stdin': subprocess.PIPE,
- 'universal_newlines': True
- })
+ options |= {'stdin': subprocess.PIPE, 'universal_newlines': True}
 
 self.process = _p_open(commands, **options)
 self.media = media
@@ -103,7 +99,7 @@ def _thread_mon(self):
 if thread.is_alive():
 self.process.terminate()
 thread.join()
- error = 'Timeout! exceeded the timeout of {} seconds.'.format(str(self.timeout))
+ error = f'Timeout! exceeded the timeout of {str(self.timeout)} seconds.'
 logging.error(error)
 raise RuntimeError(error)
 
@@ -118,7 +114,7 @@ def run(self):
 
 if self.process.poll():
 error = str(Process.err) if Process.err else str(Process.out)
- logging.error('ffmpeg failed to execute command: {}'.format(error))
+ logging.error(f'ffmpeg failed to execute command: {error}')
 raise RuntimeError('ffmpeg failed to execute command: ', error)
 
 logging.info("ffmpeg executed command successfully")
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