Public bug reported: With some input video (such as LQ MP4 from [1]), the second pass fails when a preset enabling automatic placement of alternate reference frames with "auto-alt-ref=1" (such as all of those provided by libav-tools) is used. (Example of non-problematic input is MP4 from [2].) This is apparently an upstream issue, already fixed in v1.1.0-184-g429743c [3].
Steps to reproduce: 1. wget 'http://archive.org/download/Mario2_919/Mario2_919_LQ.avi' 2. avconv -y -i Mario2_919_LQ.avi -c:v libvpx -pre libvpx-360p -pass 1 -an -sn -t 1 out.webm 3. avconv -y -i Mario2_919_LQ.avi -c:v libvpx -pre libvpx-360p -pass 2 -an -sn -t 1 out.webm What happens: The second pass ends with: [webm @ 0x7ab6c0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 100 >= 100 av_interleaved_write_frame(): Invalid argument What I expect to happen: The second pass to finish successfully. Workaround: Copy preset file to ˝/.avconv/, comment out (#) auto-alt-ref=1. *[1] http://archive.org/details/Mario2_919 *[2] http://archive.org/details/014674 *[3] http://code.google.com/p/webm/issues/detail?id=468#issueheader ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: libvpx1 1.0.0-1 ProcVersionSignature: Ubuntu 3.5.0-34.55~precise1-generic 3.5.7.13 Uname: Linux 3.5.0-34-generic x86_64 ApportVersion: 2.0.1-0ubuntu17.3 Architecture: amd64 CheckboxSubmission: 09ae689090491ca53449589269e4bfd8 CheckboxSystem: edda5d4f616ca792bf437989cb597002 Date: Sun Jun 16 16:02:38 2013 InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027) MarkForUpload: True SourcePackage: libvpx UpgradeStatus: Upgraded to precise on 2011-11-21 (573 days ago) ** Affects: libvpx (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug precise running-unity -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1191516 Title: Application provided invalid, non monotonically increasing dts to muxer in stream 0 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvpx/+bug/1191516/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
