Reporting a Bug To The FFmpeg Project

First of all, please remember that all the developers working on FFmpeg are volunteers, we are not paid for analyzing, debugging, fixing and answering bug reports. While we try our best to create high quality software and be responsive, if you should not get an answer, please consider the above and be aware of the fact that we receive many bug reports and the amount of time it takes to deal with them can be substantial. Nevertheless most issues get resolved, just please understand that there are no guarantees nor promises.

Before reporting a bug, please consider the following items:

FFmpeg is in a state of perpetual development and we do not currently have the person power to backport fixes to official releases. As such, if you wish to query or report a bug, you must try with the latest development branch revision of FFmpeg to confirm the issue still exists.

When writing your bug report, please include (uncompressed):

If you encounter a crash bug, please provide the gdb output, backtrace and disassembly using the the ffmpeg_g debug binary as follows:

gdb ffmpeg_g

In gdb, type 'r' for run, along with the rest of the ffmpeg command line:

r <rest of command line>

When gdb encounters its problem, run the following commands and copy/paste the output into your bug report:

disass $pc-32,$pc+32
info all-registers

With older gdb versions, use disass $pc-32 $pc+32.

Bug Tracker

Once you have gathered this information, you can submit a report to the FFmpeg bug tracker. You should provide all information so that anyone can reproduce the bug. Please do not report your problem on the developer mailing list: Only send bug reports there if you also intend to provide a fix.

Submitting Sample Media

The developers may ask you to provide a sample media file illustrating your problem. In this case, please follow these steps:

Important: Movie files which have been compressed (rar,7z,gzip,...) will be deleted without being examined unless they are raw RGB/YUV/PCM. Furthermore movie files uploaded to services like megaupload, rapidshare or any other similar service will be ignored. We are not willing to spend our time fighting with this ridiculous, bloated and spam-filled crap.