This issue still could be reproduced on arale/vivid r4 sometimes, and sometimes the length is displayed as 0:00 just for the first 1~2 seconds, then actual length will shown.
$ system-image-cli -i
current build number: 4
device name: arale
channel: ubuntu-touch/rc-proposed/meizu.en
last update: 2015-05-28 05:26:35
version version: 4
version ubuntu: 20150527
version device: 20150522-a851049
version custom: 20150526-719-5-24
This issue still could be reproduced on arale/vivid r4 sometimes, and sometimes the length is displayed as 0:00 just for the first 1~2 seconds, then actual length will shown.
$ system-image-cli -i touch/rc- proposed/ meizu.en
current build number: 4
device name: arale
channel: ubuntu-
last update: 2015-05-28 05:26:35
version version: 4
version ubuntu: 20150527
version device: 20150522-a851049
version custom: 20150526-719-5-24