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Editorial Team
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Asked: 2026-05-24T03:22:26+00:00

I’m writing a paperclip processor that class ffmpeg using the Paperclip.run command. Currently, that

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I’m writing a paperclip processor that class ffmpeg using the Paperclip.run command. Currently, that line throws an Cocaine::CommandLineError stating

Command ‘/opt/local/bin/ffmpeg -i
“/tmp/stream20110729-2442-133evp0.mp3”
“/tmp/stream20110729-2442-133evp020110729-2442-15k6sr4.ogg”
2>/dev/null’ returned 1. Expected 0

This doesn’t really tell me a lot about what’s going on, and I can’t find anything about FFMPEG error code 1.

I need to find more information about what’s happening in FFMPEG, but it seems the error output is being sent to /dev/null (something Paperclip adds to my command).

BTW I’m running RoR with Passenger on Apache 2 on OSX Snow Leopard.

How can I get ffmpeg to log more details about the issue?

Thank you for your help!

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1 Answer

  1. Editorial Team

    Try adding the option :swallow_stderr => false to the Paperclip.run call. It’ll instruct the command line processor not to redirect the standard error to /dev/null and you might get the errors FFMPEG is generating.

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