V 1.0 - Only Prints

mkv/__init__.py

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+# mkv/__init__.py
+
+from .chapter import (
+    get_intro_outro,
+    get_chapters
+    )
+from .intro_outro import (
+    check_intro_outro_sync
+)

mkv/chapter.py

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+# for import needed
+import sys
+from pathlib import Path
+
+sys.path.append(str(Path(__file__).resolve().parent.parent))
+
+from utils import run
+### Regular Imports
+from typing import Tuple, List
+import json
+
+def get_chapters(file: Path) -> List[Tuple[float, float]]:
+    """Return list of (start_ti
+from .intro_outro importme, duration) for each chapter."""
+    cmd = [
+        "ffprobe",
+        "-i", str(file),
+        "-print_format", "json",
+        "-show_chapters",
+        "-loglevel", "error"
+    ]
+
+    result = run(cmd)
+    data = json.loads(result.stdout)
+
+    chapters = []
+    for ch in data.get("chapters", []):
+        start = float(ch["start_time"])
+        end = float(ch["end_time"])
+        duration = end - start
+        chapters.append((start, duration))
+
+    return chapters
+
+def get_intro_outro(file: Path, length: float = 90.0) -> List[Tuple[float, float]]:
+    try:
+        chapters = get_chapters(Path(file))
+    except:
+        raise AttributeError(f"{file} has no chapter Marks")
+    multiplier = 2
+    min_len = length / multiplier
+    max_len = length * multiplier
+    filtered = [
+        (start, dur) for start, dur in chapters
+        if min_len <= dur <= max_len
+    ]
+    while len(filtered) > 2 and multiplier <= 1.1:
+        multiplier -= 0.1
+        min_len = length / multiplier
+        max_len = length * multiplier
+        filtered = [
+            (start, dur) for start, dur in chapters
+            if min_len <= dur <= max_len
+        ]
+    if len(filtered) == 2:
+        return filtered
+    elif len(filtered) == 1:
+        ### Found only a Intro or Outro
+        raise ValueError(f"Could only find one intro or outro:\n{filtered}")
+    elif len(filtered) == 0:
+        raise ValueError(f"Found no outro or intro:\n{filtered}")
+    else:
+        raise ValueError(f"Found too many intros/outros:\n{filtered}")
+
+if __name__ == '__main__':
+    file = "/home/honney/projects/mkv/output_dir/08.mkv"
+    print(get_intro_outro(Path(file)))

mkv/check_intro_outro.py

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+import sys
+import os
+from pathlib import Path
+from mkv import check_intro_outro_sync
+
+if __name__ == '__main__':
+    if len(sys.argv) == 2:
+        if os.path.isfile(sys.argv[1]):
+            boolean, floater, stream = check_intro_outro_sync(Path(sys.argv[1]))
+            if boolean:
+                print("Video is syncable!")
+                print(f"With offset of {floater} at audio_stream {stream}")
+            else:
+                print("Video is not syncable!")
+        else:
+            raise FileExistsError(f"File does not exists: {sys.argv[1]}")
+    else:
+        print("python check_intro.py /path/to/file")

mkv/intro_outro.py

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+from mkv.chapter import get_intro_outro
+from audio.audio_utils import extract_audio_segment_tmp, get_audio_streams
+from audio.audio_cross_correlation import get_audio_offset
+from pathlib import Path
+import numpy as np
+from typing import Tuple
+
+def check_intro_outro_sync(file: Path, length: float = 90.0, uncertainty: float = 0.1, max_offset: float = 0.1) -> Tuple[bool, float|None, int|None]:
+    intro_outro = get_intro_outro(file, length)
+    if intro_outro[0][0]<intro_outro[1][0]:
+        intro = intro_outro[0]
+        outro = intro_outro[1]
+    else:
+        intro = intro_outro[1]
+        outro = intro_outro[0]
+
+    ### Cut away any possible part that is not of the intro/outro
+    intro = (intro[0]+intro[1]*(uncertainty/2), intro[1]-intro[1]*uncertainty)
+    outro = (outro[0]+outro[1]*(uncertainty/2), outro[1]-outro[1]*uncertainty)
+
+    ### Get the intro and outro Segments
+    audio_streams = get_audio_streams(file)
+    intros : list[Path] = []
+    outros : list[Path] = []
+    # for i in audio_streams:
+    #     intros.append(extract_audio_segment_tmp(file, intro, None, i))
+    #     outros.append(extract_audio_segment_tmp(file, outro, None, i))
+    intros.append(extract_audio_segment_tmp(file, intro, None, audio_streams[0]))
+    outros.append(extract_audio_segment_tmp(file, outro, None, audio_streams[0]))
+    intros.append(extract_audio_segment_tmp(file, intro, None, audio_streams[-1]))
+    outros.append(extract_audio_segment_tmp(file, outro, None, audio_streams[-1]))
+
+    ### correlate
+    intro_offsets = []
+    outro_offsets = []
+    for intro_a, outro_a in zip(intros, outros):
+        idx = intros.index(intro_a)
+        odx = outros.index(outro_a)
+        for intro_b, outro_b in zip(intros[idx+1:], outros[odx+1:]):
+            intro_offset = get_audio_offset(intro_a, intro_b, intro[1])
+            intro_offsets.append(intro_offset)
+            # print(f"intro_offset between Audioline {intros.index(intro_a)} and {intros.index(intro_b)} is {intro_offset}")
+            outro_offset = get_audio_offset(outro_a, outro_b, outro[1])
+            outro_offsets.append(outro_offset)
+            # print(f"outro_offset between Audioline {outros.index(outro_a)} and {outros.index(outro_b)} is {outro_offset}")
+            # print(f"Offset of offsets: {(outro_offset - intro_offset)}")
+    mean_offset = float(np.mean([intro_offsets[0], outro_offsets[0]]))
+
+    # print(f"Mean Intro Offset: {round(np.mean(intro_offsets), 1)}")
+    # print(f"Mean Outro Offset: {round(np.mean(outro_offsets), 1)}")
+    # print(f"Offset of mean offsets: {round(np.mean(outro_offsets) - np.mean(intro_offsets)), 3}")
+
+    if np.abs(np.mean(outro_offsets) - np.mean(intro_offsets)) < max_offset:
+        return True, mean_offset, audio_streams[-1]
+    return False, None, None