mirror of
https://github.com/master-of-zen/Av1an.git
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69 lines
2.3 KiB
Python
69 lines
2.3 KiB
Python
from typing import Tuple, Optional
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from Projects import Project
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from Chunks.chunk import Chunk
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from Av1an.commandtypes import MPCommands, CommandPair, Command
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from Encoders.encoder import Encoder
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from Av1an.utils import list_index_of_regex
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class SvtVp9(Encoder):
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def __init__(self):
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super().__init__(
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encoder_bin='SvtVp9EncApp',
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encoder_help='SvtVp9EncApp --help',
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default_args=None,
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default_passes=1,
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default_q_range=(20, 50),
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output_extension='ivf'
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)
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@staticmethod
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def compose_ffmpeg_raw_pipe(a: Project) -> Command:
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"""
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Compose a rawvideo ffmpeg pipe for svt-vp9
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SVT-VP9 requires rawvideo, so we can't use arg.ffmpeg_pipe
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:param a: the Project
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:return: a command
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"""
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return ['ffmpeg', '-y', '-hide_banner', '-loglevel', 'error', '-i', '-', *a.ffmpeg, *a.pix_format, '-bufsize',
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'50000K', '-f', 'rawvideo', '-']
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def compose_1_pass(self, a: Project, c: Chunk, output: str) -> MPCommands:
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return [
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CommandPair(
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SvtVp9.compose_ffmpeg_raw_pipe(a),
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['SvtVp9EncApp', '-i', 'stdin', '-n', f'{c.frames}', *a.video_params, '-b', output]
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)
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]
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def compose_2_pass(self, a: Project, c: Chunk, output: str) -> MPCommands:
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raise ValueError("SVT-VP9 doesn't support 2 pass")
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def is_valid(self, project: Project) -> Tuple[bool, Optional[str]]:
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if project.video_params is None:
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return False, 'SVT-VP9 requires: -w, -h, and -fps/-fps-num/-fps-denom'
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return super().is_valid(project)
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def man_q(self, command: Command, q: int) -> Command:
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"""Return command with new cq value
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:param command: old command
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:param q: new cq value
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:return: command with new cq value"""
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adjusted_command = command.copy()
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i = list_index_of_regex(adjusted_command, r"-q")
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adjusted_command[i + 1] = f'{q}'
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return adjusted_command
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def match_line(self, line: str):
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"""Extract number of encoded frames from line.
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:param line: one line of text output from the encoder
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:return: match object from re.search matching the number of encoded frames"""
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pass # todo: SVT encoders are special in the way they output to console
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