[MPlayer-users] pipe info from mencoder

D Richard Felker III dalias at aerifal.cx
Thu Apr 10 18:27:26 CEST 2003

On Thu, Apr 10, 2003 at 03:58:26PM -0400, j.a.l wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> weird thing :
> mencoder -oac copy -ovc frameno -o frameno.avi stream.dump
> all right get info printed.
> mencoder -oac copy -ovc frameno -o frameno.avi stream.dump 1> info
> File not found: 'frameno.avi'
> : No such file or directory
> Could not determine number of frames (for absolute seek)
> what's that ????? ( now )

Because you forgot to rm the frameno.avi from the first run!! So, the
second one detects the file there to begin with, then overwrites it
first thing (because of -o frameno.avi), then doesn't have any data to
go by!!

BTW, -oac copy -ovc frameno is TOTALLY USELESS. The only purpose of
using the pre-pass with frameno.avi is to get the audio bitrate if
you're reencoding audio, but if you just want to copy it, there's no


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