Comment 19 for bug 807028

I cut a video in to 2 parts and adjusted the end of the first one (like step 13). crash...
output in terminal:
[...more lines...]
[h264 @ 0x7f1b8adcd810]insufficient thread locking around avcodec_open/close()
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f1b8af75210]ISO: File Type Major Brand: avc1
st:0 removing common factor 1800 from timebase
st:1 removing common factor 128 from timebase
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f1b710fe660]ISO: File Type Major Brand: avc1
st:0 removing common factor 1800 from timebase
st:1 removing common factor 128 from timebase
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f1b8af51ab0]ISO: File Type Major Brand: avc1
st:0 removing common factor 1800 from timebase
st:1 removing common factor 128 from timebase
[NULL @ 0x7f1b8af53160]insufficient thread locking around avcodec_open/close()
    Last message repeated 11 times
[NULL @ 0x7f1b710b40b0]insufficient thread locking around avcodec_open/close()
[NULL @ 0x7f1b7b433a30]insufficient thread locking around avcodec_open/close()
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f1b8adcc010]ISO: File Type Major Brand: avc1
st:0 removing common factor 1800 from timebase
st:1 removing common factor 128 from timebase
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f1b8adcf250]ISO: File Type Major Brand: avc1
st:0 removing common factor 1800 from timebase
st:1 removing common factor 128 from timebase
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f1b8af49110]ISO: File Type Major Brand: avc1
st:0 removing common factor 1800 from timebase
st:1 removing common factor 128 from timebase
Speicherzugriffsfehler