I had this problem. I had to transcode with mencoder to MJPEG before importing into Cinelerra.

This sort of question is asked many times.  (including myself)

I think the developers would save everyone alot of hassle if they put a warning on 80% of the streams and said "transcode to our favorites - for a better experience." And give a list.

Roger Keays wrote:

Hi Pierre,

Did you ever find a work around for this defect? It's driving me crazy.

Roger

[email protected] wrote:
http://bugs.cinelerra.org/show_bug.cgi?id=457

           Summary: ogg theora errors: Error while seeking keyframe (and
                    others)
           Product: Cinelerra
           Version: 2.1
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: Medium
         Component: File Loading
        AssignedTo: [email protected]
        ReportedBy: [email protected]


I recently attempted to load the file:

 http://mirror.linux.org.au/pub/linux.conf.au/2007/video/talks/211.ogg

After getting working around Bug 456, I managed to open the ogg file into
cinelerra and somewhat play, but when cinelerra tried to seek to certain
frames, (either through its "drawing of the media", or when I manually jump
around),  got the error messages such as:

virtual int FileOGG::read_frame(VFrame*): Error while seeking to keyframe,
wrong frame number (frame: X, keyframe: Y)

where X and Y are integers. And also, less regularly:

virtual int FileOGG::read_frame(VFrame*): Expecting a keyframe, but didn't get
it
and when seeking near the end of the file:

int FileOGG::ogg_seek_to_keyframe(sync_window_t*, long in, int64_t*): Cannont
find next page while seeking

Regards,
Pierre

Reproducible: Always

Steps to Reproduce:




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