ffmpeg goes berserk when trying to convert this video to mjpeg

[Teo]

I have a 3gp video of 20 seconds, 10 fps, 480x640 resolution, h264 codec, for a file size of about 4 MB; I tried the following command:
ffmpeg -i VIDEO0024.3gp -vcodec mjpeg -s 300x400 -qmin 0.8 -qmax 0.8 VIDEO0024.mov
After several minutes, ffmpeg had processed more than 145357 frames, reported a time of 1.62 seconds, had written more than one GIGABYTE of output and was still working. I obviously killed it.
The exactly same command has worked just fine with other video files encoded with other codecs.

I think the problem is that for some reason it by default uses an output framerate of about 90000 fps. Adding -r 10 for the output fixes the issue. But it is still an issue: according to documentation the default framerate is 30fps, anyway 90000 is certainly not a reasonable default.

I erroneously reported this in the FFmpeg bugtracker and they say it's probably fixed in FFmpeg.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: ffmpeg 4:0.7.3-0ubuntu0.11.10.1
ProcVersionSignature: Ubuntu 3.0.0-16.29-generic 3.0.20
Uname: Linux 3.0.0-16-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 1.23-0ubuntu4
Architecture: i386
Date: Sat Feb 25 01:49:11 2012
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: libav
UpgradeStatus: Upgraded to oneiric on 2011-12-07 (79 days ago)

[Sebastian Ramacher (s-ramacher)]

Is this issue still present in libav-tools 11-2.1? If yes, please report it at https://libav.org/bugreports.html.

[Launchpad Janitor (janitor)]

[Expired for libav (Ubuntu) because there has been no activity for 60 days.]