[mythtv-users] Still little luck with nuvexport

Risto Treksler risto at elkhornbanff.ca
Mon May 30 19:56:19 UTC 2005



hi,

try editing the recording in mythtv (hit 'e' while watching)
use the  'page down' key to go towards the end

make sure the end of the show is cut off
-make sure there is _no- 'delete before this frame' at the very end
-make sure there _is_ a 'delete after this frame' 
 at least a few seconds from the end

that should fix it for you
i have been meaning to submit a patch that makes sure this happens
automagically, since it's been my experience that the end of the show needs to
be cut off like this to avoid this particular behaviour

Risto.


Brad Templeton <brad+myth at templetons.com> said:

> 
> Still trying to figure out a good path to working nuvexport.  Trying
> mpeg2cut, I continue to get the strange behaviour where it writes
> out about 1.5gb of output quickly (which is not just to the first
> commercial break, it has a couple of breaks in it) and then seems to
> output nothing for a very long time.
> 
> Eventually it dies with the diagnostic shown below.
> 
> 
> This is a 720p HDTV recording, mp2 of course., 
> 
> 
> Encode started:  Mon May 30 11:54:48 2005
> mpeg2cut v177
> Using mode Xvfb
> Filename "/video/myth/(redacted).nuv"
> OutFile "./(redacted).mpg"
> Last Frame 868349
> Cutlist "4515-57929 74539-112907 126829-151550 169295-195424 212121-239166
253319-294606 313052-354939 371779-405634 423274-448570 466257-498448
517808-552556 571222-608292 628050-671936 689756-718880 737434-789714
807386-856100 868330-"
> Finding the AV Offset to use with lvemux: 0 (not detected)
> Indexing the file with avidemux2
> Cutting out commercials with avidemux2
> ./mpeg2cut: line 162: 28224 Aborted                 nice -n 19 avidemux2
--load-workbench ${BASENAME}.cut --audio-codec MP2 --save-raw-video
${BASENAME}.m2v --save-raw-audio ${BASENAME}.mp2 --quit 2>/dev/null >/dev/null
> Remultiplexing video
> GOP timestamps will be rebuild   
> ERROR: opening A/V streams (0/1)
> Cleaning up
> rm: cannot remove `2007_(redacted).mp2': No such file or directory
> 
> Encode finished:  Mon May 30 12:35:22 2005
> Encode lasted: 40m 34s
> 
> 
> 
> Attempts to actually transcode also fail.  In this case transcode without
> scale, no deinterlace (of course), no denoise, one pass, no crop.
> 
>     a) With mencoder, immidiate failure (bug already in tracker)
>     b) with transcode->xvid -- resulting video unplayable, pretends
>        to play but shows blank screen
>     c) ffmpeg->xvid -> Unusably slow -- 4fps (on 60fps show)
>     d) ffmpeg->divx -> 20fps (tolerable) but audio goes way out of sync
>             by end.
> 
> 
> Anybody got some examples of parameters to use for transocding 720p
> mp2s, with cutlist that have good results?  I have been able to do it
> myself in mencoder just fine, but that's without cutlist.  If I could
> get a working mpeg2cut I could then transcode with mencoder.
> 
> Also, anybody played with doing inverse telecine on 720p recordings
> and the right parameters to use for it?   Film (24fps) transferred
> to 60fps 720p doesn't have interlace to worry about but it does do
> lots of frame duplciation which one might as well remove in a transcode.
> 



-- 





More information about the mythtv-users mailing list