前番組のSD部分をカット

gistfile1.py

#!/usr/bin/env python3.1
import sys
from itertools import dropwhile

from ariblib import TransportStreamFile
from ariblib.packet import pid

output = open(sys.argv[2], 'wb')
with TransportStreamFile(sys.argv[1]) as ts:
    # SDを捨ててHDを残す場合。逆に前番組のHDを捨ててSDを残す場合は4 (ARIB-STD-B10 第2部第6章 表6-60)
    video_pid = ts.get_video_pid(1)
    for packet in dropwhile(lambda p: pid(p) == video_pid, ts):
        output.write(packet)