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see
Editing - MixDowns
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CONVERSION OF VOB files |
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Using Sorenson Squeeze to convert it to MOV and keep
the same quality, I use Avid 1:1 myself, DV 50 might also be a good
choice, both of them will fast import into Avid (MJ)
To get some ideas about how to setup Squeeze, you
might want to follow the link from this post, the tutorial is for HD
but the settings could as well be adjusted for SD and will also make
it possible for you to get a grip about codec and aspect settings
View this post at
http://community.avid.com/forums/p/89880/510476.aspx#510476
When converting .vob to .mov, I have found
that freeware MPEG_Streamclip
www.squared5.com produces significantly superior results in much
faster time as compared to the same process in Sorenson Squeeze. To
put it briefly, with my Streamclip settings, coverting a 1GB .vob yields
a 2GB .mov of superb quality. I convert to QuickTime (.mov)
selecting the Apple Photo codec with settings at default including
the 50% Quality then select 720x480 unscaled with bottom field
dominance. Works GREAT for me!
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FREE WARE PROGRAMS |
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MPEG_Streamclip
www.squared5.com - |
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When converting .vob to .mov, I have found
that freeware MPEG_Streamclip
www.squared5.com produces significantly superior results in much
faster time as compared to the same process in Sorenson Squeeze. To
put it briefly, with my Streamclip settings, coverting a 1GB .vob yields
a 2GB .mov of superb quality. I convert to QuickTime (.mov)
selecting the Apple Photo codec with settings at default including
the 50% Quality then select 720x480 unscaled with bottom field
dominance. Works GREAT for me! |
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AVANTI
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Avanti GUI is a free front-end for
FFmpeg with the option to insert Avisynth as pre-processor.
It can be used with almost all Windows OS builds of FFmpeg. It
offers user friendly control over all basic and advanced FFmpeg
options.
A number of template examples are included. There's no need to be
familiar with Avisynth to use the predefined Avanti/Avisynth
pre-processor options.
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| TS Muxer |
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The reason I ask is that MTS is most often the native format from a
avchd cam, which is not exactly M4V. (It's H.264). If
I dump a MTS file into TSmuxeR it breaks down to a AC3 file, a SUP
file, and a H.264 file (TSmuxeR btw is a free download and
will strip all from its container with no re-encode)
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| You Tube Encoding |
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you should ALWAYS use the Apple H264 compressor to
ensure the best possible visual quality. Ensure that B-Frames (Frame Re-odering)
are/is always DISABLED. The de-selection of the B-Frames option
applies to any video you intend to compress with the Apple H264
compressor. When exporting out of Avid, always ensure
that your exported file is in a square-pixel format and NOT a
thin-raster/DV pixel format. YouTube needs those square pixels as it
does not recognise pixel aspect ratio flags. If
your material is not natively a 16:9 aspect, such as 2:35:1, 2:40:1 then
pre-apply a suitable reformat/mask effect in order to add enough
letterboxing to fill a 16:9 frame.
The Guide:
If the community video embedding feature is not
working, you won't see the tutorial here. You will instead have to visit
the dedicated Videos section to
view it.
General Settings:
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360p Settings |
Compressor: H264 - Select Multipass &
De-select B-Frames
Frame Size: 640x360 (Better downscaling ON if source is a
greater resolution)
Bitrate: Between 750 & 1500Kb/s should work.
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480p Settings |
Compressor: H264 - Select Multipass &
De-select B-Frames
Frame Size: 854x480 (Better downscaling ON if source is a
greater resolution)
Bitrate: Between 1500 & 3000Kb/s should work
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720p Settings |
Compressor: H264 - Select
Multipass & De-select B-Frames
Frame Size: 1280x720 (Better downscaling ON if source is a
greater resolution)
Bitrate: Between 4000 & 6000Kb/s should work.
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1080p Settings |
Compressor: H264 - Select
Multipass & De-select B-Frames
Frame Size: 1920x1080 (Better downscaling OFF)
Bitrate: Between 8000 & 10000Kb/s should work.
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This page lists the file
formats YouTube accepts, and Quicktime (MOV) is among them. If your
uncompressed Quicktime movie is under 2GB and under 10 minutes in
length, you could just upload it directly and YouTube will do the rest.
That'd be the easiest workflow |
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This post from YouTube's forum
says essentially what I'd say, and that is to give them the file at its
native size and let YouTube do whatever it does to it. |
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Re: Encoding for Youtube (nov 2008)
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Doug@Stun - I
do this type of stuff a lot. The secret is that you need individual
projects for each correct frequency. In this instance you'd need three
seperate projects. Then simply open the footage bin from the other
projects in the frequency you want to finish in. You'd need a 1080
23.98Psf, a SD 30 for 29.97i, and a 720p 59.94. Open the AMA files in
the appropriate project frame rate and the Avid will take care of the
rest.
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Kenton - I would recommend using the same compression
as what your footage is. If you're going to end up on DVD, then DV25
would be sufficient. I use Mixdowns quite often
My main reasons are:
- when I do a QTref export, my exported QTref file
only has to reference 3 files (the video mixdown media file and the
two audio mixdown media files) That alone can prevent a lot of
headaches.
- Another reason is that I found that when I
exported a QTref without a V/A Mixdown sometimes my encoder of
choice wouldn't handle the Filler or any Titles properly.
- If I need to send a review cut to a client (or
even get ready to start Onlining a cut), a Video Mixdown of my cut
placed on a new blank track will give you a nice reference to make
sure you're stuff is lined up. If I embed a TC burn in my client
review file the client then makes their notes based on that TC. If
I take their notes and cut out a bite or shot and shorten the piece,
then the rest of their notes make no sense as the TC numbers would
be off. But, if you put the VM on the upper track then it'll have
the TC burn embedded into the video and it won't ever change if you
Extract or shift something around.
You will rarely find anything that can "improve" the
quality of video. You can certainly apply effects that will alter the
footage and possibly make some footage a little more palettable, but by
and large all anyone can ever do is "maintain" the quality as much as
possible.
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File Export / gets you to a lot of choices. My general pattern is to export to a wmv for upload to the
interent. I used to fuse to an avi and then use media encoder.
Here is what I did.....
Choose Export / WMV / and since timeline was 1440x1080,
I choose 720x540, progressive, dv 16x9, 30 frames. I did a 10 second
test - looked good, so I did the full 2 minutes - 50 minutes, and about
I then exported the same
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