Commit 75686dee authored by Ulrike Uhlig's avatar Ulrike Uhlig
Browse files

Merge branch 'master' of webmasters.boum.org:wiki

parents 4376435a 59fb6bf7
......@@ -62,13 +62,19 @@ User experience
Hot topics on our help desk
===========================
XXX: Ask tails-bugs@boum.org to list hot topics for the last month.
Help desk has seen the same issues than last month:
1.
1. Users are still affected by [[a loss of
persistence.conf|https://labs.riseup.net/code/issues/10976]]
1.
1. We received also several reports about [[keyboard and mouse not
working after upgrading|https://labs.riseup.net/code/issues/14754]]
1.
1. A few users reported the [[disappearance of a part of their
keyring|https://labs.riseup.net/code/issues/15014]]
1. And some users had [[trouble with obfs4
bridges|https://labs.riseup.net/code/issues/15548]]
Infrastructure
==============
......
......@@ -29,6 +29,7 @@ Resources
- [[Survey platform (*LimeSurvey*)|user_experience/limesurvey]]
- [[Guidelines for user testing|user_experience/testing]]
- [[Recording user testing|user_experience/recording]]
- [[Preparing video clips|user_experience/clip]]
- Participant Bill of Rights (adapted from
[Simply Secure](https://simplysecure.org/knowledge-base/)):
- [English ODT](https://github.com/sajolida/tails-ux/raw/master/tools/bill_of_rights.en.fodt)
......
[[!meta title="Preparing video clips"]]
Cut out a video clip from a longer recording
--------------------------------------------
ffmpeg -ss [start] -t [duration] -i [input] [output]
For example:
ffmpeg -ss 25:20 -t 10 -an -i P4.ogv clip.webm
Amplify the audio in a video clip
---------------------------------
ffmpeg -i [input] -af "volume=25dB" [output]
For example:
ffmpeg -i clip.webm -af "volume=25dB" clip-amplified.webm
Remove the sound in a video clip
--------------------------------
ffmpeg -i [input] -an [output]
For example:
ffmpeg clip.webm -an clip-nosound.webm
Supports Markdown
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment