[Bug 680386] New: vp8enc: getting trash if encoding from flv

GStreamer (bugzilla.gnome.org) bugzilla at gnome.org
Sat Jul 21 11:58:55 PDT 2012


https://bugzilla.gnome.org/show_bug.cgi?id=680386
  GStreamer | gst-plugins-bad | git

           Summary: vp8enc: getting trash if encoding from flv
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: bug-track at fisher-privat.net
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


if i use some flv to source to encode webm i get currupt, broken video. I
assume the reason is that some wrong packet is muxed at the beginning of
stream. If i use mkvinfo -v i get unusually small first video packet, since it
is a key frame it should be bigger. This packet probably deliver wrong init
values to decoder.

ways to reproduce:
create flv file (i use gst 0.10 to create flv file):
gst-launch -e videotestsrc num_buffers=100 ! ffenc_flv ! ffmux_flv ! filesink
location=test.flv

convert it (attention i encode it with gst 1.0):
gst-launch-1.0 filesrc location=test.flv ! decodebin ! vp8enc ! webmmux !
filesink location=test.webm

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