On Mon, 13 Dec 2004, Richard Ellis wrote:
> Editing is indeed an option: LVE (http://lvempeg.sourceforge.net/).
I saw that - gave it a go, had major issues with open GOPs at the time
(which is what mpeg2enc generates by default - I wonder if that default
should be changed to be closed GOPs) so about all I ended up with
was a coredump most of the time.
For editing transport streams (but it can also work with PS files)
there is ProjectX:
http://www.lucike.info/index.htm?http://www.lucike.info/page_projectx.htm
It's what I use for cutting out commercials (or pledge breaks on the
PBS stations ;)) from TS streams I capture from the HDTV receiver
(via IEEE1394). Does a really good job of taking care of damaged or
lost TS packets and maintaining A/V sync.
> Now, it's also gop accurate, not frame accurate, so is not able to
> edit quite as accurately as you can edit an MJPEG or DV stream.
I've done a lot of GOP accurate editing and to blunt - it's horrid
(can't believe the new HDV format is pushing MPEG-2 as an acquisition
format!). ~0.6 second accuracy just isn't good enough in many
cases. DVD authoring for example (some editing programs and
encoders have the concept of a "compression marker" where you can
force a GOP to start - very useful).
> you've seen, but my PVR250's put out simply beautiful pictures. If I
> let the card use up a reasonable amount of bit rate in encoding
> (~2G/hr) the results from broadcast/cable tv are simply spectacular.
~5000Kb/s is fine if the signal is clean. Don't know if "spectacular"
applies to the analog most stations are putting out these days :)
If Dik is going to be doing lower level editing and assembly (perhaps
compositing) and so on then MPEG as a capture format probably isn't
a satisfactory solution.
Cheers,
Steven Schultz
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