def set_target_quality(project):
"""
Av1an setup for target_quality
:param project: the Project
"""
if project.vmaf_path:
if not Path(project.vmaf_path).exists():
print(f"No model with this path: {Path(project.vmaf_path).as_posix()}")
terminate()
if project.probes < 4:
print('Target quality with less than 4 probes is experimental and not recommended')
terminate()
encoder = ENCODERS[project.encoder]
if project.encoder not in ('x265', 'svt_av1') and project.target_quality_method == 'per_frame':
print(f":: Per frame Target Quality is not supported for selected encoder\n:: Supported encoders: x265, svt_av1")
exit()
# setting range for q values
if project.min_q is None:
project.min_q, _ = encoder.default_q_range
assert project.min_q > 1
if project.max_q is None:
_, project.max_q = encoder.default_q_range
def create_video_queue_segment(project: Project,
split_locations: List[int]) -> List[Chunk]:
"""
Create a list of chunks using segmented files
:param project: Project
:param split_locations: a list of frames to split on
:return: A list of chunks
"""
# segment into separate files
segment(project.input, project.temp, split_locations)
# get the names of all the split files
source_path = project.temp / 'split'
queue_files = [x for x in source_path.iterdir() if x.suffix == '.mkv']
queue_files.sort(key=lambda p: p.stem)
if len(queue_files) == 0:
er = 'Error: No files found in temp/split, probably splitting not working'
print(er)
log(er)
terminate()
chunk_queue = [
create_chunk_from_segment(project, index, file)
for index, file in enumerate(queue_files)
]
return chunk_queue
def check_exes(self):
"""
Checking required executables
"""
if not find_executable("ffmpeg"):
print("No ffmpeg")
terminate()
if self.chunk_method in ["vs_ffms2", "vs_lsmash"]:
if not find_executable("vspipe"):
print("vspipe executable not found")
terminate()
try:
import vapoursynth
plugins = vapoursynth.get_core().get_plugins()
if (
self.chunk_method == "vs_lsmash"
and "systems.innocent.lsmas" not in plugins
):
print("lsmas is not installed")
terminate()
if (
self.chunk_method == "vs_ffms2"
and "com.vapoursynth.ffms2" not in plugins
):
print("ffms2 is not installed")
terminate()
except ModuleNotFoundError:
print("Vapoursynth is not installed")
terminate()
def check_exes(self):
"""
Checking required executables
"""
if not find_executable('ffmpeg'):
print('No ffmpeg')
terminate()
if self.chunk_method in ['vs_ffms2', 'vs_lsmash']:
if not find_executable('vspipe'):
print('vspipe executable not found')
terminate()
try:
import vapoursynth
plugins = vapoursynth.get_core().get_plugins()
if self.chunk_method == 'vs_lsmash' and "systems.innocent.lsmas" not in plugins:
print('lsmas is not installed')
terminate()
if self.chunk_method == 'vs_ffms2' and "com.vapoursynth.ffms2" not in plugins:
print('ffms2 is not installed')
terminate()
except ModuleNotFoundError:
print('Vapoursynth is not installed')
terminate()
def find_aom_keyframes(stat_file, key_freq_min):
keyframes_list = []
number_of_frames = round(os.stat(stat_file).st_size / 208) - 1
dict_list = []
try:
with open(stat_file, 'rb') as file:
frame_buf = file.read(208)
while len(frame_buf) > 0:
stats = struct.unpack('d' * 26, frame_buf)
p = dict(zip(fields, stats))
dict_list.append(p)
frame_buf = file.read(208)
except Exception as e:
print('Get exception:', e)
print('Recomended to switch to different method of scenedetection')
terminate()
# intentionally skipping 0th frame and last 16 frames
frame_count_so_far = 1
for i in range(1, number_of_frames - 16):
is_keyframe = False
# https://aomedia.googlesource.com/aom/+/ce97de2724d7ffdfdbe986a14d49366936187298/av1/encoder/pass2_strategy.c#2065
if frame_count_so_far >= key_freq_min:
is_keyframe = test_candidate_kf(dict_list, i, frame_count_so_far)
if is_keyframe:
keyframes_list.append(i)
frame_count_so_far = 0
frame_count_so_far += 1
return keyframes_list
def aom_keyframes(video_path: Path, stat_file, min_scene_len, ffmpeg_pipe, video_params, is_vs, quiet):
"""[Get frame numbers for splits from aomenc 1 pass stat file]
"""
log(f'Started aom_keyframes scenedetection\nParams: {video_params}\n')
total = frame_probe_fast(video_path, is_vs)
f, e = compose_aomsplit_first_pass_command(video_path, stat_file, ffmpeg_pipe, video_params, is_vs)
tqdm_bar = None
if (not quiet) and (not (tqdm is None)):
tqdm_bar = tqdm(total=total, initial=0, dynamic_ncols=True, unit="fr", leave=True, smoothing=0.2)
ffmpeg_pipe = subprocess.Popen(f, stdout=PIPE, stderr=STDOUT)
pipe = subprocess.Popen(e, stdin=ffmpeg_pipe.stdout, stdout=PIPE,
stderr=STDOUT, universal_newlines=True)
encoder_history = deque(maxlen=20)
frame = 0
while True:
line = pipe.stdout.readline()
if len(line) == 0 and pipe.poll() is not None:
break
line = line.strip()
if line:
encoder_history.append(line)
if quiet or (tqdm is None):
continue
match = re.search(r"frame.*?/([^ ]+?) ", line)
if match:
new = int(match.group(1))
if new > frame:
tqdm_bar.update(new - frame)
frame = new
if pipe.returncode != 0 and pipe.returncode != -2: # -2 is Ctrl+C for aom
enc_hist = '\n'.join(encoder_history)
er = f"\nAom first pass encountered an error: {pipe.returncode}\n{enc_hist}"
log(er)
print(er)
if not stat_file.exists():
terminate()
else:
# aom crashed, but created keyframes.log, so we will try to continue
print("WARNING: Aom first pass crashed, but created a first pass file. Keyframe splitting may not be accurate.")
# aom kf-min-dist defaults to 0, but hardcoded to 3 in pass2_strategy.c test_candidate_kf. 0 matches default aom behavior
# https://aomedia.googlesource.com/aom/+/8ac928be918de0d502b7b492708d57ad4d817676/av1/av1_cx_iface.c#2816
# https://aomedia.googlesource.com/aom/+/ce97de2724d7ffdfdbe986a14d49366936187298/av1/encoder/pass2_strategy.c#1907
min_scene_len = 0 if min_scene_len is None else min_scene_len
keyframes = find_aom_keyframes(stat_file, min_scene_len)
return keyframes
def match_line(self, line: str):
"""Extract number of encoded frames from line.
:param line: one line of text output from the encoder
:return: match object from re.search matching the number of encoded frames"""
if "error" in line.lower():
print("\n\nERROR IN ENCODING PROCESS\n\n", line)
terminate()
return re.search(r"Encoding frame\s+(\d+)", line)
def startup_check(project: Project):
"""
Performing essential checks at startup_check
Set constant values
"""
if sys.version_info < (3, 6):
print("Python 3.6+ required")
sys.exit()
if sys.platform == "linux":
def restore_term():
os.system("stty sane")
atexit.register(restore_term)
if not project.chunk_method:
project.select_best_chunking_method()
project.is_vs = is_vapoursynth(project.input[0])
if project.is_vs:
project.chunk_method = "vs_ffms2"
project.check_exes()
set_target_quality(project)
if (project.reuse_first_pass and project.encoder != "aom"
and project.split_method != "aom_keyframes"):
print("Reusing the first pass is only supported with \
the aom encoder and aom_keyframes split method.")
terminate()
setup_encoder(project)
# No check because vvc
if project.encoder == "vvc":
project.no_check = True
if project.encoder == "svt_vp9" and project.passes == 2:
print(
"Implicitly changing 2 pass svt-vp9 to 1 pass\n2 pass svt-vp9 isn't supported"
)
project.passes = 1
project.audio_params = shlex.split(project.audio_params)
project.ffmpeg = shlex.split(project.ffmpeg)
project.pix_format = ["-strict", "-1", "-pix_fmt", project.pix_format]
project.ffmpeg_pipe = [
*project.ffmpeg,
*project.pix_format,
"-f",
"yuv4mpegpipe",
"-",
]
def match_line(self, line: str):
"""Extract number of encoded frames from line.
:param line: one line of text output from the encoder
:return: match object from re.search matching the number of encoded frames"""
if 'error' in line.lower():
print('\n\nERROR IN ENCODING PROCESS\n\n', line)
terminate()
return re.search(r"encoded.*? ([^ ]+?) ", line)
def match_line(self, line: str):
"""Extract number of encoded frames from line.
:param line: one line of text output from the encoder
:return: match object from re.search matching the number of encoded frames"""
if "fatal" in line.lower():
print("\n\nERROR IN ENCODING PROCESS\n\n", line)
terminate()
if "Pass 2/2" in line or "Pass 1/1" in line:
return re.search(r"frame.*?/([^ ]+?) ", line)
def encoding_loop(self):
with concurrent.futures.ThreadPoolExecutor(max_workers=self.project.workers) as executor:
future_cmd = {executor.submit(self.encode_chunk, cmd): cmd for cmd in self.chunk_queue}
for future in concurrent.futures.as_completed(future_cmd):
try:
future.result()
except Exception as exc:
_, _, exc_tb = sys.exc_info()
print(f'Encoding error {exc}\nAt line {exc_tb.tb_lineno}')
terminate()
self.project.counter.close()
def startup_check(project: Project):
"""
Performing essential checks at startup_check
Set constant values
"""
if sys.version_info < (3, 6):
print('Python 3.6+ required')
sys.exit()
if sys.platform == 'linux':
def restore_term():
os.system("stty sane")
atexit.register(restore_term)
if not project.chunk_method:
project.select_best_chunking_method()
# project.is_vs = is_vapoursynth(project.input)
if project.is_vs:
project.chunk_method = 'vs_ffms2'
project.check_exes()
set_target_quality(project)
if project.reuse_first_pass and project.encoder != 'aom' and project.split_method != 'aom_keyframes':
print('Reusing the first pass is only supported with \
the aom encoder and aom_keyframes split method.')
terminate()
setup_encoder(project)
# No check because vvc
if project.encoder == 'vvc':
project.no_check = True
if project.encoder == 'svt_vp9' and project.passes == 2:
print("Implicitly changing 2 pass svt-vp9 to 1 pass\n2 pass svt-vp9 isn't supported")
project.passes = 1
project.audio_params = shlex.split(project.audio_params)
project.ffmpeg = shlex.split(project.ffmpeg)
project.pix_format = ['-strict', '-1', '-pix_fmt', project.pix_format]
project.ffmpeg_pipe = [*project.ffmpeg, *project.pix_format,'-color_range', '0', '-f', 'yuv4mpegpipe', '-']
def setup_encoder(project: Project):
"""
Setup encoder params and passes
:param project: the Project
"""
encoder = ENCODERS[project.encoder]
# validate encoder settings
settings_valid, error_msg = encoder.is_valid(project)
if not settings_valid:
print(error_msg)
terminate()
if project.passes is None:
project.passes = encoder.default_passes
project.video_params = encoder.default_args if project.video_params is None \
else shlex.split(project.video_params)
validate_inputs(project)
def concat_routine(self):
"""
Runs the concatenation routine with project
:param project: the Project
:return: None
"""
try:
if self.encoder == "vvc":
vvc_concat(self.temp, self.output_file.with_suffix(".h266"))
elif self.mkvmerge:
concatenate_mkvmerge(self.temp, self.output_file)
else:
concatenate_ffmpeg(self.temp, self.output_file, self.encoder)
except Exception as e:
_, _, exc_tb = sys.exc_info()
print(
f"Concatenation failed, error At line: {exc_tb.tb_lineno}\nError:{str(e)}"
)
log(f"Concatenation failed, aborting, error: {e}")
terminate()
