mirror of
https://github.com/master-of-zen/Av1an.git
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65 lines
2.1 KiB
Python
65 lines
2.1 KiB
Python
import os
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import re
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from Av1an.arg_parse import Args
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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 X264(Encoder):
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def __init__(self):
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super().__init__(
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encoder_bin='x264',
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default_args=['--preset', 'slow', '--crf', '23'],
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default_passes=1,
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default_q_range=(20, 35),
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output_extension='mkv'
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)
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def compose_1_pass(self, a: Args, c: Chunk, output: str) -> MPCommands:
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return [
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CommandPair(
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Encoder.compose_ffmpeg_pipe(a),
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['x264', '--stitchable', '--log-level', 'error', '--demuxer', 'y4m', *a.video_params, '-', '-o',
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output]
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)
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]
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def compose_2_pass(self, a: Args, c: Chunk, output: str) -> MPCommands:
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return [
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CommandPair(
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Encoder.compose_ffmpeg_pipe(a),
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['x264', '--stitchable', '--log-level', 'error', '--pass', '1', '--demuxer', 'y4m', *a.video_params,
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'-', '--stats', f'{c.fpf}.log', '-', '-o', os.devnull]
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),
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CommandPair(
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Encoder.compose_ffmpeg_pipe(a),
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['x264', '--stitchable', '--log-level', 'error', '--pass', '2', '--demuxer', 'y4m', *a.video_params,
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'-', '--stats', f'{c.fpf}.log', '-', '-o', output]
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)
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]
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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"--crf")
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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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return re.search(r"^[^\d]*(\d+)", line)
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