There are many examples of framing of Russia and separatists by media . This is a clear example.
News.com states in an article dated July 18, 2014 :
RUSSIAN rebel military chief Igor ‘The Terrible’ Strelkov has allegedly been filmed in a mobile phone video of MH17 plane as it crashed, gleefully bragging “That was a blast — look at the smoke!”.
However, the video was made by people living in the area. None of them are separatists. People in Donbass are pro Russia and pro separatists so that explains why they say these things. This video can be seen at many places on internet. The translation is not always correct.