def ffmpeg_export(
p_indir
): # the real meat, this is where i struggle with ffmpeg-python and occasionally succeed
des_w = int(entry_w.get())
des_h = int(entry_h.get())
if (des_w > sel_w) or (des_h > sel_h):
messagebox.showerror(
title="Error", message="Desired size is larger than source size!")
return
sel_ratio = sel_w / sel_h
des_ratio = des_w / des_h
# safe placeholder values for when src and output have the same ratio
x_offset = 0
y_offset = 0
adj_w = sel_w
adj_h = sel_h
if (crop_h.get() == 1) and (sel_ratio != des_ratio):
adj_w = des_ratio * sel_h # get the new width for the desired aspect ratio
x_offset = (sel_w - adj_w) / 2 # centering math
elif (crop_h.get() == 0) and (sel_ratio != des_ratio):
adj_h = des_ratio * sel_w
y_offset = (sel_h - adj_h) / 2
for x in files:
x = p_indir + os.sep + x
progress_ffmpeg.config(text='Rendering: ' + os.path.split(x)[1])
frame_ffmpeg.update()
# ffmpeg complains if we try to output to the same file as our input
# so we output to a different file and replace the input afterwards
outdir = x + '~.png'
if overwrite_og.get() == 0 and use_custom_outdir.get() == 0:
newdir = os.path.dirname(str(x)) + '_' + \
str(des_w) + 'x' + str(
des_h) # results in {old directory}_{width}x{height} in the old directory's parent dir
outdir = newdir + os.sep + str(os.path.split(x)[1])
if not os.path.isdir(newdir):
os.mkdir(newdir)
elif use_custom_outdir.get() == 1:
outdir = custom_outdir + os.sep + str(os.path.split(x)[1])
stream = ffmpeg.input(str(x), nostdin=None)
stream = ffmpeg.crop(stream, x_offset, y_offset, adj_w, adj_h)
stream = ffmpeg.filter(
stream, "scale", des_w, des_h,
flags="bilinear") # TODO: allow user to choose algorithm
stream = ffmpeg.output(
stream, outdir, hide_banner=None
) # TODO: find a way to stop making a new shell for each op
stream = ffmpeg.overwrite_output(stream)
ffmpeg.run_async(stream)
if overwrite_og.get(
) == 1: # check again because overwriting when we're not supposed to is bad mkay
os.remove(x)
os.rename(x + '~.png', x)
progress_ffmpeg.config(text='Rendering: Done!')
def _save_video(path, array, fps=25, video_codec='libx264'):
# Check the extension of the given file
path = _check_extensions([path], extensions=['.mp4'])[0]
# Get the informations from the array
n, height, width, channels = array.shape
# Initialize the process
process = ffmpeg.input('pipe:',
format='rawvideo',
pix_fmt='rgb24',
s='{}x{}'.format(width, height))
process = ffmpeg.output(process,
path,
pix_fmt='yuv420p',
vcodec=video_codec,
r=fps)
process = ffmpeg.overwrite_output(process)
process = ffmpeg.run_async(process, pipe_stdin=True)
# Save all the frames
for frame in array:
process.stdin.write(frame.tobytes())
# Terminate the process
process.stdin.close()
process.wait()
def start_recording(self, output_file, filters={}, overwrite=True):
"""Starts recording to a given output video file.
Parameters
----------
output_file : :obj:`str`
filename to write video to
filters : dict of dicts
filters to apply to the video
overwrite : bool
whether to overwrite the output file if it exists
"""
if self._recording:
raise Exception(
"Cannot record a video while one is already recording!")
self._recording = True
stream = ffmpeg.input(
"/dev/video{}".format(self._device),
f=self._format,
s="{}x{}".format(*self._res),
framerate=self._fps,
)
for filter_name, filter_kwargs in filters.items():
stream = ffmpeg.filter(stream, filter_name, **filter_kwargs)
stream = ffmpeg.output(stream, output_file)
self._video = ffmpeg.run_async(stream,
quiet=True,
overwrite_output=overwrite)
def _yield_streaming_content(self, videoid, container_format='mp4'):
video_container, audio_container, output_args = self._get_output_video_parameters(
container_format)
video_format, audio_format = self._get_youtube_urls(
videoid, video_container, audio_container)
video_input = ffmpeg.input(video_format['url'])
audio_input = ffmpeg.input(audio_format['url'])
output = ffmpeg.output(video_input,
audio_input,
'-',
codec='copy',
format=container_format,
**output_args)
#print(ffmpeg.compile(output))
process = ffmpeg.run_async(output, pipe_stdout=True, quiet=True)
def terminate_process():
print("Killing ffmpeg process because of timeout.")
process.kill()
watchdog = WatchDog(terminate_process, 30)
watchdog.run()
def content():
while True:
read_data = process.stdout.read(1024)
yield read_data
watchdog.process_still_active()
if len(read_data) == 0 and process.poll() is not None:
break
process.kill()
print("Terminated ffmpeg")
return content()
def main(self, **kwargs):
"""Start the record"""
super().create()
now = datetime.now().strftime('%Y%m%d%H%M.mp4')
filename = os.path.join(self.settings['path'], 'video_' + now)
settings = self.settings['record']
stream = ffmpeg.input(**settings['input']).setpts(settings['setpts'])
stream = ffmpeg.output(stream, filename, **settings['output'])
process = ffmpeg.run_async(
stream,
pipe_stdin=True,
pipe_stdout=True,
pipe_stderr=self.args.show,
overwrite_output=True,
)
try:
if self.args.time:
self.logger.info('record the screen for %i sec',
self.args.time)
for _ in range(self.args.time):
sleep(1)
else:
input('press enter to finish ')
except KeyboardInterrupt:
self.logger.info('breack with KeyboardInterrupt')
finally:
self.logger.info('save file')
process.communicate(input=b"q")
def test__run_async(mocker, pipe_stdin, pipe_stdout, pipe_stderr, cwd):
process__mock = mock.Mock()
popen__mock = mocker.patch.object(subprocess,
'Popen',
return_value=process__mock)
stream = _get_simple_example()
process = ffmpeg.run_async(
stream,
pipe_stdin=pipe_stdin,
pipe_stdout=pipe_stdout,
pipe_stderr=pipe_stderr,
cwd=cwd,
)
assert process is process__mock
expected_stdin = subprocess.PIPE if pipe_stdin else None
expected_stdout = subprocess.PIPE if pipe_stdout else None
expected_stderr = subprocess.PIPE if pipe_stderr else None
(args, ), kwargs = popen__mock.call_args
assert args == ffmpeg.compile(stream)
assert kwargs == dict(
stdin=expected_stdin,
stdout=expected_stdout,
stderr=expected_stderr,
cwd=cwd,
)
def run(self, quiet=True):
"""
Runs an endless loop of consuming images from the source and sending them to the Device
Syntax:
webcam = WebcamSource()
fvd.initInput(webcam)
fvd.initOutput(69, 1920, 1080)
fvd.run()
"""
if self.output is None:
raise Exception("Specify output first")
self.running = True
self.ffmpeg_proc = ffmpeg.run_async(self.output,
pipe_stdin=True,
quiet=quiet)
img_gen = self.vid_source.generator()
while self.running:
image = next(img_gen).astype(np.uint8)
if image is None:
self.ffmpeg_proc.terminate()
self.running = False
break
self.ffmpeg_proc.stdin.write(image.tobytes())
self.__delay_til_next_frame()
def __read_buffer(self):
self.stream = ffmpeg.run_async(self.source_stream, pipe_stdout=True)
while self.stream.poll() is None:
buffer = self.stream.stdout.read(self.read_byte_size)
if self.auto_stop and time.time() - self.end_time > self.auto_stop:
break
if not buffer:
continue
try:
self.pool_frames.put(buffer, timeout=self.auto_stop)
except Full:
break
# Stop record
try:
self.pool_frames.get_nowait()
except IndexError:
pass
except Empty:
pass
self.pool_frames.put(self.__STOP_BYTES)
self.stream.kill()
if self.stream.stdout:
self.stream.stdout.close()
self.stream = None
self.thread = None
def __init__(self, stream, size, pixel_format=PIXEL_RGB_FORMAT, get_latest=False, cache_frames=30):
self.stream = ffmpeg.run_async(stream, pipe_stdout=True)
self.size = size
self.pix_fmt = pixel_format
self.pool_frames = self.Box() if get_latest else Queue(maxsize=cache_frames)
self.thread = Thread(target=self.read_buffer)
self.read_byte_size = self.size[0] * self.size[1] * 3
def record_stream(stream, recording_time):
# Launch video recording
popen = ffmpeg.run_async(stream, pipe_stdin=True)
time.sleep(recording_time * 60)
# Stop video recording
popen.communicate(str.encode("q")) # Equivalent to send a Q
# To be sure that the process ends I wait 3 seconds and then terminate de process (wich is more like kill -9)
time.sleep(3)
popen.terminate()
def create_popen(path_file_input: Path) -> Popen[bytes]:
stream = ffmpeg.input(path_file_input)
stream = ffmpeg.filter(stream, "scale", 768, -1)
stream_spec = ffmpeg.output(stream, "pipe:",
f="rawvideo").global_args("-n")
# Reason: Requires to update ffmpeg-python side.
return ffmpeg.run_async(stream_spec,
pipe_stdin=True,
pipe_stdout=True,
pipe_stderr=True) # type: ignore
def save_video(fname, images, output_fps=30, vcodec='libx264', filters=''):
assert isinstance(images, np.ndarray), "images should be np.array: NHWC"
num_frames, height, width, channels = images.shape
stream = ffmpeg.input('pipe:', format='rawvideo',
pix_fmt='rgb24', s='{}x{}'.format(width, height))
stream = ffmpeg.filter(stream, 'setpts', '2*PTS') # 2*PTS is for slower playback
stream = ffmpeg.output(stream, fname, pix_fmt='yuv420p', vcodec=vcodec, r=output_fps)
stream = ffmpeg.overwrite_output(stream)
process = ffmpeg.run_async(stream, pipe_stdin=True)
for frame in tqdm(images, desc='writing video to %s' % fname):
process.stdin.write(frame.astype(np.uint8).tobytes())
process.stdin.close()
process.wait()
def start_slink_only_process(self):
print('Starting Streamlink Only Process...')
self.thread_slk.start()
while True:
self.dec_process = ffmpeg.input('pipe:', f='mpegts')
self.dec_process = ffmpeg.output(self.dec_process.video,
f"udp://{self.target_url}",
f='mpegts')
self.dec_process = ffmpeg.run_async(self.dec_process,
quiet=True,
pipe_stdin=True)
time.sleep(60)
self.dec_process.terminate()
def main() -> None:
global flag
global sub_process
filming = False
# init ros node
rospy.init_node("image_recorder", anonymous=True, disable_signals=True)
signal.signal(signal.SIGTERM, handler_stop)
signal.signal(signal.SIGINT, handler_stop)
# create camera object and Configure streams
pipeline = rs.pipeline()
config = rs.config()
config.enable_stream(rs.stream.color, WIDTH, HEIGHT, rs.format.bgr8, 30)
rospy.loginfo("node is up")
# Start streaming
pipeline.start(config)
# start-stop Subscriber
ss_sub = rospy.Subscriber("/film", String, callback, queue_size=1)
try:
while not rospy.is_shutdown():
frames = pipeline.wait_for_frames()
color_frame = frames.get_color_frame()
if not color_frame:
continue
if flag == "start": # start filming a video
process = subprocess_create()
rospy.loginfo("start filming")
sub_process = ffmpeg.run_async(process, pipe_stdin=True)
rospy.sleep(2)
flag = " "
filming = True
if flag == "stop": # stop filming a video
filming = False
sub_process.stdin.close()
sub_process.wait()
rospy.loginfo("stop filming")
flag = " "
rospy.sleep(5)
if filming:
color_image = np.asanyarray(color_frame.get_data())
sub_process.stdin.write(color_image[:, :, ::-1].astype(np.uint8).tobytes())
finally:
# Stop streaming
pipeline.stop()
rospy.signal_shutdown("error!")
def start_stream_decoder(self):
print('Starting Stream Decoder...')
self.dec_process = ffmpeg.input(
'pipe:',
#blocksize=BSIZE,
f='mpegts',
vsync='drop')
self.dec_process = ffmpeg.output(
self.dec_process.video,
'pipe:',
#blocksize=BSIZE,
f='rawvideo',
pix_fmt='bgr24')
self.dec_process = ffmpeg.run_async(self.dec_process,
quiet=True,
pipe_stdin=True,
pipe_stdout=True)
self.thread_slk.start()
def save_video(fname, images, output_fps=30, vcodec="libx264", filters=""):
assert isinstance(images, np.ndarray), "images should be np.array: NHWC"
num_frames, height, width, channels = images.shape
stream = ffmpeg.input("pipe:",
format="rawvideo",
pix_fmt="rgb24",
s="{}x{}".format(width, height))
stream = ffmpeg.filter(stream, "setpts",
"2*PTS") # 2*PTS is for slower playback
stream = ffmpeg.output(stream,
fname,
pix_fmt="yuv420p",
vcodec=vcodec,
r=output_fps)
stream = ffmpeg.overwrite_output(stream)
process = ffmpeg.run_async(stream, pipe_stdin=True)
for frame in tqdm(images, desc="writing video to %s" % fname):
process.stdin.write(frame.astype(np.uint8).tobytes())
process.stdin.close()
process.wait()
def start_stream_encoder(self):
print('Starting Stream Encoder...')
self.enc_process = ffmpeg.input(
'pipe:',
#blocksize=BSIZE,
f='rawvideo',
pix_fmt='bgr24',
s=f'{self.width}x{self.height}')
self.enc_process = ffmpeg.output(
self.enc_process.video,
f"udp://{self.target_url}",
f='mpegts',
#framerate=30,
#maxrate='1M', bufsize='4M' )
maxrate='2M',
bufsize='4M')
self.enc_process = ffmpeg.overwrite_output(self.enc_process)
self.enc_process = ffmpeg.run_async(self.enc_process,
quiet=False,
pipe_stdin=True)
def run(self, quiet=True):
"""
Runs an endless loop of consuming images from the source and sending them to the Device
Syntax:
webcam = WebcamSource()
fvd.initInput(webcam)
fvd.initOutput(69, 1920, 1080)
fvd.run()
"""
if self.output is None:
raise Exception("Specify output first")
self.running = True
self.ffmpeg_proc = ffmpeg.run_async(self.output,
pipe_stdin=True,
quiet=quiet)
img_gen = self.vid_source.generator()
while self.running:
image = next(img_gen).astype(np.uint8)
if image is None:
self.ffmpeg_proc.terminate()
self.running = False
break
try:
self.ffmpeg_proc.stdin.write(image.tobytes())
except BrokenPipeError as error:
# ffmpeg probably crashed, lets print the issue of ffmpeg
print(
"Couldn't write image to ffmpeg, error output of ffmpeg:",
file=sys.stderr)
print(b"\n".join(
self.ffmpeg_proc.stderr.readlines()).decode("utf-8"),
file=sys.stderr)
raise error
self.__delay_til_next_frame()
def save_video(args,
fname,
images,
output_fps=30,
vcodec='libx264',
filters=''):
assert isinstance(images, np.ndarray), "images should be np.array: NHWC"
num_frames, height, width, channels = images.shape
if (args.img_datatype == cv2.CV_8UC1) or (args.img_datatype
== cv2.CV_8UC3):
target_datatype = np.uint8
pixel_format = 'rgb24'
elif args.img_datatype == cv2.CV_16UC1:
target_datatype = np.uint16
pixel_format = 'rgb48'
else:
raise ValueError('Unknown image data type.')
stream = ffmpeg.input('pipe:',
format='rawvideo',
pix_fmt=pixel_format,
s='{}x{}'.format(width, height))
stream = ffmpeg.filter(stream, 'setpts',
'2*PTS') # 2*PTS is for slower playback
stream = ffmpeg.output(stream,
fname,
pix_fmt='yuv420p',
vcodec=vcodec,
r=output_fps)
stream = ffmpeg.overwrite_output(stream)
process = ffmpeg.run_async(stream, pipe_stdin=True)
for frame in tqdm(images, desc='writing video to %s' % fname):
process.stdin.write(frame.astype(target_datatype).tobytes())
process.stdin.close()
process.wait()
def read_buffer(self):
self.stream = ffmpeg.run_async(self.source_stream, pipe_stdout=True)
while self.stream.poll() is None:
buffer = self.stream.stdout.read(self.chunk_size)
self.pool_frames.put(buffer)
def start_recording(self):
"""
Start recording the stream defined on self.stream_uri
:return: boolean if the recording started sucessfully
"""
# if we are dealing with a USB camera or RTSP stream we
# treat them differently, for example remove the socket TCP I/O timeout (stimeout)
parsed_uri = urlparse(self.stream_uri)
if parsed_uri.scheme == "rtsp":
stream_input = ffmpeg.input(
self.stream_uri,
nostdin=None,
use_wallclock_as_timestamps=1,
stimeout=self._def_stimeout,
fflags="+genpts",
rtsp_transport='tcp') # stimeout in microsecondss
else:
stream_input = ffmpeg.input(self.stream_uri)
# store the files in segments to prevent corruption
segment_fpath = self.prepare_filepath_for_segment(
self.output_filepath, self._def_segment_fname_size)
# ffmpeg -use_wallclock_as_timestamps 1 -fflags +genpts -rtsp_transport tcp -stimeout 3000000
# -i rtsp://admin:[email protected]:554/stream0 -f segment -b:v 900k -an -flags +global_header -map 0
# -map_metadata -1 -movflags +frag_keyframe+separate_moof+omit_tfhd_offset+empty_moov -reset_timestamps 1
# -segment_format matroska
# -segment_list /tmp/stored_streams/2.stream_192_168_3_22_554.2019-08-18.14.02.53_video_list.txt
# -segment_list_type ffconcat -segment_time 20 -strict 2 -vcodec copy -use_wallclock_as_timestamps 1
# -fflags +genpts /tmp/stored_streams/2.stream_192_168_3_22_554.2019-08-18.14.02.53-%03d.mkv -y
output_arguments = [
("strict", 2),
("f", "segment"),
("map", 0),
("segment_time", self._def_segment_time),
("segment_format", self._def_segment_format),
("segment_list", self.segment_filelist),
("segment_list_type", "ffconcat"),
("vcodec", self._def_vcodec),
("video_bitrate", self._def_bitrate),
("flags", "+global_header"),
("reset_timestamps", 1),
("map_metadata", -1),
("use_wallclock_as_timestamps", 1),
("fflags", "+genpts"),
("movflags",
"+frag_keyframe+separate_moof+omit_tfhd_offset+empty_moov"),
]
# if there is no audio codec then use the an
# flag to remove audio from the recorded stream
if self._def_acodec != "":
output_arguments.append(("acodec", self._def_acodec))
else:
output_arguments.append(("an", None))
ffmpeg_output_streams = [
ffmpeg.output(stream_input, segment_fpath,
**OrderedDict(output_arguments))
]
output_streams = ffmpeg.merge_outputs(*ffmpeg_output_streams)
output_streams = ffmpeg.overwrite_output(output_streams)
debug_command = ffmpeg.compile(output_streams)
print("ffmpeg command: {}".format(' '.join(debug_command)))
self.start_time = time.time()
self.proc = (
# ALERT: https://stackoverflow.com/questions/16523746/ffmpeg-hangs-when-run-in-background
# clean the stderr / stdout regularly to prevent this process for freezing
ffmpeg.run_async(output_streams,
pipe_stdout=True,
pipe_stderr=True,
overwrite_output=True))
start_timeout = time.time()
is_reached_size = False
while self.proc.poll() is None and time.time(
) - start_timeout < self._def_timeout_secs and not is_reached_size:
try:
if os.path.getsize(self.get_last_segment_output_filepath()
) > self._def_min_video_size_bytes:
is_reached_size = True
except OSError as e:
pass
time.sleep(0.1)
if self.proc.poll() is None:
return True
else:
self.start_time = 0
self.out, self.err = self.proc.communicate()
return False
def create_popen(self) -> Popen[bytes]:
# Reason: Requires to update ffmpeg-python side.
return ffmpeg.run_async(self.stream_spec,
pipe_stdin=True,
pipe_stdout=True,
pipe_stderr=True) # type: ignore
def run_ffmpeg(self):
ffcmd = ffmpeg.input(self.device, format='v4l2', input_format='mjpeg',
s='svga', r=7.5)
ffcmd = ffmpeg.output(ffcmd, 'pipe:', format='mjpeg', vcodec='copy')
self.ffproc = ffmpeg.run_async(ffcmd, pipe_stdout=True, pipe_stdin=True )
self.running = True
