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Old October 11th 18, 08:45 PM posted to alt.windows7.general
Paul[_32_]
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Posts: 11,873
Default question for the video editor folks

Bill in Co wrote:
Paul wrote:
JBI wrote:
On 10/11/2018 04:25 AM, SC Tom wrote:

"JBI" wrote in message news I have several videos I've transferred over from VHS to digital. All
are in MPEG2 format. I need to cut and edit some of them, but I'm
having trouble finding a free editor that does so without
re-encoding. Suggestions for freeware that would allow this without a
re-encode would be welcome. Thank you.
I've used VideoPad Video Editor for a few years now. There is a free,
non commercial, home-use one. It just asks you each time you open it
to certify that you are using it for home use:

https://www.nchsoftware.com/videopad/index.html
A little bit under the picture is the line "Get it free." That's the
one. I still use an older version (4.14), and it looks like they're up
6.24
now. I have had no problems with the older version, so have not felt
the need to update what's already working just fine.
Thanks for this nice program! About the only alternative I've tried
that's still free and looks quite capable. Only one caveat: I am unable
to export the mpeg2 I'm trying to edit without re-encode. Apparently,
it has to be in one of their recommended input codec formats to edit
losslessly. Do you know if the older version is that way or not?

About the only thing I did end up doing was using Avidemux to edit. It
*seemed* to save without re encoding (still not sure), but output file
size seemed the same and it saved very fast. I did end up having to
save as a .ts file instead of mpeg, but so far it seems to play fine on
any of my players.

I guess I could save my edits to uncompressed AVI in Videopad and then
reopen and resave with a new format/ codec, but just too much work.
Never thought I'd have this much trouble with a simple mpeg2 edit and no
re encode with freeware!

Videohelp has lists of programs. Scroll down after you
make a selection, to see the review for each program.
Use "find" in your browser and look for lossless.

https://www.videohelp.com/software/s...-editors-basic

Then, when you look at an individual item, there will be
comments from users.

https://www.videohelp.com/software/F...ns#downloadold

"The 1.4.13.805 version can still be downloaded from
http://www.tucows.com/preview/1600233
However after giving it a pretty good try it seems that it does
not do frame accurate clipping after all! All it does is starts
the trimmed output block at a nearby keyframe and doesn't try to
do any "smart-rendering" to give you a few extra frames before
an existing keyframe.

So don't bother wasting your time with it, it provides no extra
functionality over free tools like avidemux (which as of version
2.6 also insists on starting an output block at a keyframe).

And that "smart rendering" term is good for searches too.
This is available as a trial-ware, but it could watermark
stuff - I wouldn't rely on the trial-ware declaration
as a free lunch :-)

https://www.videohelp.com/software/TMPGEnc-MPEG-Editor

TMPGEnc MPEG Smart Renderer 5 supports

MPEG-2 Video format which is used for DVD-Video
H.264/AVC format which is for websites such as YouTube
"H.265/HEVC" format which is newly supported


http://download1.pegasys-inc.com/dow...3_setup_en.exe

Paul


I don't think he's going to find one that is free, Paul. I still think one
(or both) of the two I mentioned before might do it, but they are not free.
Here is my suggested list again:

SolveigMM Video Splitter
VideoReDo Plus (or even VideoReDo, for that matter)

I've used them both in the past, with pretty good results. :-)


I mentioned earlier, that I'd seen at least one product
that promised to do smart render on more than one
file type. I posted this, so that person could
see such a thing exists.

Editing a video on GOP boundaries for MPEG2 only, isn't
the limit of the science. But for "frame accurate" editing
without re-rendering, the software still has to mess up
the contents of at least one GOP (up to 12 frames,
one would hope only 5 frames would get messed up).
Messed up means "recomputed and corrected" to mesh
with the GOP on either side. I've not seen any
critical reviews of how well this works. Whether
a discerning customer would choose to re-render
the whole thing, as a "better for quality" solution.

Another tiny detail for this stuff, is there is some
video encoding with bidirectional deltas. It's intended
to make smooth forward and reverse of video work
better. (It's a customer centric feature so people
will "like" how easy your video is to play with.)
Apparently that makes "frame accurate" "smart rendering"
all that much tougher, as now you have to mesh things
in both the forward and the reverse direction.

Some of this stuff, I just read in passing, when I'm working
on something else, and I'm "not taking notes" or anything :-)
I don't actually work with video very much.

Paul
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