error during prep

[firmread]

I run through exact same steps from the tutorial and got this error when trying to run prep command.

$ moshy -m prep -i charlie.mp4 -o charlie.avi
I, [2016-01-09T20:51:27.428782 #53475]  INFO -- : [AV] Adding output parameter ["bf", 0]
I, [2016-01-09T20:51:27.428876 #53475]  INFO -- : [AV] Adding output parameter ["g", 600]
I, [2016-01-09T20:51:27.428905 #53475]  INFO -- : [AV] Adding output parameter ["b:v", "4196k"]
I, [2016-01-09T20:51:27.428999 #53475]  INFO -- : [AV] Running command: ffmpeg -i "charlie.mp4" -bf 0 -g 600 -b:v 4196k -y "charlie.avi"
/Users/firmread/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/cocaine-0.5.8/lib/cocaine/command_line.rb:82:in `run': Cocaine::CommandNotFoundError (Cocaine::CommandNotFoundError)
    from /Users/firmread/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/av-0.9.0/lib/av.rb:30:in `run'
    from /Users/firmread/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/av-0.9.0/lib/av/commands/base.rb:91:in `run'
    from /Users/firmread/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/moshy-1.0.2/lib/moshy/prep.rb:75:in `prep'
    from /Users/firmread/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/moshy-1.0.2/lib/moshy/prep.rb:58:in `cli'
    from /Users/firmread/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/moshy-1.0.2/bin/moshy:102:in `<top (required)>'
    from /Users/firmread/.rbenv/versions/2.3.0/bin/moshy:23:in `load'
    from /Users/firmread/.rbenv/versions/2.3.0/bin/moshy:23:in `<main>'

any suggestion on how to fix? Noted that I'm on ruby 2.3.0 on OS X 10.11.2. Thanks!

[wayspurrchen]

Hey @firmread, I haven't had a chance to look into this in detail yet, but can you try running this with Ruby ~2.0? Moshy ATM is only tested in Ruby ~2.0.

[dimitraz]

I get the exact same issue, even when switching to an older version of Ruby

[wayspurrchen]

Thanks for the confirmation, @dimitraz. I'll investigate this.

[wayspurrchen]

@dimitraz @firmread I think the issue is that you may not have ffmpeg installed locally. The README mentions that you need to have it installed in order to use prep because it wraps it, although it is pretty unhelpful as to how to install it! Sorry about that. Try installing ffmpeg for your OS and if the issue still persists, please let me know.

[dimitraz]

@wayspurrchen Looks like I had forgotten to change the ffmpeg path! Works beautifully now, thank you!

[wayspurrchen]

👍 Great to hear it!