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Posted by Bill Lee on 01/30/06 15:24
In article <1138613578.084605.89410@f14g2000cwb.googlegroups.com>,
"Paul Turner" <turnerpaul@gmail.com> wrote:
> I guess my main question is, what is the best compressor(and subsequent
> settings) to use when exporting video from Premiere, to use in Encore
> to burn a single layer dvd?
>
> I'm very confused. Maybe I should do the transcoding in Encore instead
> of Premiere somehow? And if so, what settings/compressor?
The bottom line is: it doesn't matter as long is it is getting the
results for you. Many workflows are possible, some more efficient than
others for certain purposes and situations. Since Premiere and Encore
are integrated it might be simpler to do this in Encore.
> FYI, my project consists of 8 video's, which all total around 90mins.
OK, let's assume a 95 minute total video. We go to the calculator
<http://www.videohelp.com/calc.htm> and find that for 1 hour 35 minutes
of video you can encode at 6191kbits/sec if you encode the audio at
224kbits/sec AC-3 (Dolby Digital). Sorry I don't know the exact settings
available in Encore, but 6000bit/sec VBR 2-pass may do the job for your
video and 224 kbit/sec AC-3 encoding for the audio. Don't try an use
every last byte on the DVD since you may miscalculate and find you need
to have room for ten more seconds of video which there isn't space for
and have to re-encode some/all your video.
> [I've already tried transcoding my big avi files using the default
> settings in nero, but the quality wasn't great. I've also tried using
> the 'media compressor' option in premiere instead of 'export>movie' but
> it generates 3 files (including a m2v?) that I don't know about, and
> don't know how to import properly into Encore anyway.]
You should be able to open your Premiere project up inside Encore.
"[Encore] takes advantage of the Edit Original feature found in other
Adobe products, enabling users to open the original project created in
Premiere, and upon output, Adobe Encore DVD automatically updates the
video content onto the DVD."[1]
If you output your video from Premiere, you should end up with three
files: AC-3 audio file, m2v MPEG-2 video file and metadata file which
can tell Encore where your DVD chapter markers are if you have created
them in Premiere.
> Normally I would just use trail/error until I finally get some
> transcoded files that are ok in terms of quality/size, although it
> takes about 3 hours to export/transcode one of my 8 files, so it's not
> easy!
This is where the art comes in.
1) If possible, transcode with Encore on a fast PC sitting in the corner
while you use Premiere on your main PC to do other work.
2) Set your transcodings to run overnight.
3) Transcode and check the quality. If most of the MPEG-2 video is OK,
then select the sections of video that are having the most problems with
quality and export these with a decent amount of video around them (a
couple of seconds). Transcode these with various settings and see which
one seems to give the best results. Apply these settings to the entire
set of video and test again. Repeat until the quality is adequate or you
don't think you can get adequate quality.
4) Not all 8 videos may need equal bitrate encoding. If one video is
particularly problematic, sacrifice some of the bandwidth from some of
the others to allocate to the one that is having problems.
5) Use Black Restore/White restore to minimise blockiness in deep
shadow. This pushes almost black areas in video to black (or white),
minimising the large blocks of dark grey that otherwise move around and
become distracting. This also simplifies encoding for these areas (solid
black compresses very well).
6) Avoid low light shooting since this will have the most noise (grain)
and thus suck up your available bandwidth to reproduce this unwanted
noise.
7) Use a noise reduction filter to reallocate bandwidth used to encode
noise and apply it to the desired video reproduction. A small amount of
Gaussian blur can achieve this in the absence of noise reduction filter.
8) Cater to the MPEG-2 codec in Premiere. Avoid having every pixel in
your video change every frame. Prefer wipe or slide transitions to
cross-fades. The MPEG-2 codec has the ability to translate (move) a
frame a certain number of pixels instead of treating every pixel
onscreen as having changed (dependent on how smart your encoder is).
9) Check with a test burn on DVD to make sure that the quality issues
are actually seen when the disk is played back on a DVD player and a
interlaced monitor. Sometimes faults are not noticeable on playback even
though they may be obvious in Premiere.
Bill Lee
[1] Encore FAQ from Adobe
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