Contra comparison

alex = avisource("alex_ik.avi").subtitle("alex_ik", align=8).showframenumber(x=8, y=40, size=18)
zyr  = avisource("zyr2288.avi").subtitle("zyr2288", align=8).showframenumber(x=8, y=40, size=18)

zyr  = zyr .insert(  490,  3)
alex = alex.insert( 3633,  4)
alex = alex.insert( 5812,  9)
zyr  = zyr .insert( 6282,  2)
alex = alex.insert( 6620,  5)
alex = alex.insert( 6737,  5)
alex = alex.insert( 7645,  1)
alex = alex.insert( 7725,  2)
alex = alex.insert( 8009,  2)
alex = alex.insert( 8051, 60)
alex = alex.insert( 8160,  1)
zyr  = zyr .insert( 8162, 53)
alex = alex.insert( 8275,  1)
alex = alex.insert( 8445,  1)
alex = alex.insert( 8705,  1)
alex = alex.insert( 8757,  2)
alex = alex.insert( 8801,  1)
zyr  = zyr .insert( 8996,  3)
zyr  = zyr .insert( 9099,  1)
zyr  = zyr .insert( 9223,  2)
alex = alex.insert( 9665, 40)
alex = alex.insert( 9798, 37)
zyr  = zyr .insert(10139, 61)
alex = alex.insert(12156,  1)
alex = alex.insert(12636,  1)
alex = alex.insert(13552,  2)
zyr  = zyr .insert(13984,  2)
alex = alex.insert(14398,  9)
alex = alex.insert(14440,  1)
zyr  = zyr .insert(18998,  1)
alex = alex.insert(20486,  2)
alex = alex.insert(20550,  1)
alex = alex.insert(22178,  1)
alex = alex.insert(22635, 14)
zyr  = zyr .insert(23054,  3)
zyr  = zyr .insert(23324,  1)
alex = alex.insert(24453,  6)
alex = alex.insert(24601, 33)
zyr  = zyr .insert(25368,  1)
zyr  = zyr .insert(25637, 10)
alex = alex.insert(27470, 34)
alex = alex.insert(27909,  7)
alex = alex.insert(28613,  6)
alex = alex.insert(30458,  1)
alex = alex.insert(32044,  2)
alex = alex.insert(32760, 11)

stackhorizontal(alex, zyr)
KillAudio
audio = MonoToStereo(GetChannel(zyr, 1), GetChannel(alex, 1))
AudioDub(audio, last)
trim(0, 39750)

function insert(clip c, int start, int length) {
    blankclip(c, length)
    GScript(""" for (i=0, length) {
            subtitle("-"+string(i+1), x=8, y=40, size=18, first_frame=i, last_frame=i, text_color=color_lime)
        } """)
    c.trim(0, start) ++ last ++ c.trim(start+1, -0)
}