The ffmpeg-user mailing list is answered and maintained by volunteers. This list can often be high volume, so following the rules and asking detailed questions have a better chance of being answered.

General Rules and Suggestions

  • Provide your ffmpeg command and the complete, uncut console output of your command.
  • Provide all necessary information so others can easily duplicate your issue.
  • Provide the most minimal command that still shows the issue in question. This will help narrow down what is causing the issue.
  • Use the most recent ffmpeg version possible. Compiling from git-master is preferred (see ffmpeg compilation guides), but a recent ffmpeg build is often acceptable if you are unable to compile.
  • Do not hijack threads. Thread hijacking is replying to a message and changing the subject line to something completely unrelated that was not being discussed within the original thread.
  • Avoid top-posting.
  • If you believe you are experiencing a regression please let us know and provide the responsible commit hash if known. See git help bisect for more info.
  • Avoid posting command lines that use shell variables.
  • Configure your mail client to break lines after ~70 characters.
  • Since this is a public mailing list boilerplate privacy notifications are to be avoided if possible.
  • Messages are limited to 250k in size. Provide links to larger files instead of attaching them. is a good free file host.
  • If you attach files, avoid compressing small files. Uncompressed is preferred.
  • Only FFmpeg tools and libraries are supported here. Forks, counterfeits, and other third-party tools are not supported.

Moderation Queue

Messages that are sent from unsubscribed users and messages that are over 250k in size must be approved by a mailing list moderator. Moderation wait time can be up to 48 hours, but the wait is usually shorter than 12 hours.

Please do not send a message, subscribe, and then send the same message. This may cause duplicates of the same question.


Please do not send unsubscribe requests to the mailing list. This creates unnecessary work for the moderator. You can unsubscribe yourself with one of two methods:

  • Send an email message to ffmpeg-user-request at with the subject unsubscribe, or
  • Visit the ffmpeg-user Mailman page and enter your email address in the box at the bottom of the page.

Using the archives to reply

Using the archives to reply is useful if you are not subscribed or do not have the message in your email history. You can reply to a message in the ffmpeg-user archives by clicking on the author's email address link. This will provide the proper in-reply-to headers so your message stays within the discussion thread. Try to avoid replying to messages older than 3 months.

You can also use Gmane or Nabble for a "forum style" format to interact with the mailing list.

Last modified 9 years ago Last modified on Aug 21, 2014, 1:08:22 AM
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