71 lines
1.9 KiB
Bash
71 lines
1.9 KiB
Bash
#! /bin/bash
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py="$(cat <<EOF
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from sys import stdin, stderr
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lines = [i.strip() for i in stdin.readlines()]
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def frame_duplicate_status(line):
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return "keep" if "keep" in line else "drop", "Parsed_mpdecimate_0" in line
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somelines = []
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for i in range(len(lines)):
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status, relevant = frame_duplicate_status(lines[i])
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if not relevant:
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continue
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if not somelines:
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somelines.append(lines[i])
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else:
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prev_status, _ = frame_duplicate_status(somelines[-1])
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if status != prev_status:
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somelines.append(lines[i-1])
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somelines.append(lines[i])
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somelines = [(frame_duplicate_status(i)[0], i.split("pts_time:")[1].split()[0]) for i in somelines]
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# just the keeps
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somelines = [i for i in somelines[2:] if i[0] == "keep"]
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# translate to floats
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drops = []
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for i in range(0, len(somelines), 2):
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start = float(somelines[i][1])
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if len(somelines) > i+1:
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stop = float(somelines[i+1][1])
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if stop - start > 1:
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drops.append((start, stop))
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#else:
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# drops.append((start, "inf"))
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# extend around
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for i in range(len(drops)):
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drops[i] = (drops[i][0] - 1.0, drops[i][1] + 1.0)
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# combine near
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for i in range(len(drops)-1, 0, -1):
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first_start, first_stop = drops[i-1]
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secnd_start, secnd_stop = drops[i]
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if secnd_start - first_stop < 5:
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drops = drops[:i-1] + [(first_start, secnd_stop)] + drops[i+1:]
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# output
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print("\n".join([
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f'{i[0]:.2f},{i[1]-i[0]:.2f}' for i in drops
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]))
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EOF
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)"
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d=$(mktemp -d)
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echo d=$d >&2
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for span in $(
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(
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ffmpeg -i $f -vf mpdecimate -af silencedetect=n=-50dB:d=1 -loglevel debug -f null -
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#ffmpeg -i "$f" -af silencedetect=n=-50dB:d=1 -loglevel debug -f null -
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) 2>&1 \
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| grep -E 'silencedetect|Parsed_mpdecimate_0|Duration: *[0-9]' \
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| grep -E 'silencedetect| (keep|drop) |Duration: *[0-9]' \
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| python3 -c "$py" >&2
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); do
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n=$((n+1))
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ffmpeg -y -ss ${span%,*} -i "$f" -t ${span#*,} "$d/$(printf "%05d" $(ls "$d" | wc -l)).${f##*.}"
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done
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ls $d
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echo rm -rf "$d"
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