Transcript 05 Avid 3D解决方案

Avid 3D流程介绍
MC 6.0支持Stereoscopic 3D –整体介绍
• 使得3D制作和2D制作一样简单, 3D创新的剪辑流程
• 实时的混编3D, 2D 以及不同的帧速率
• 先进的全套3D修复工具
– 针对3D原始素材的空间位置颜色等校正
– 时间线上的特效，字幕
Stereoscopic 3D
• 深度和左右画面校对工具
• 支持双路HDSDI 同时采集, 监看和输出。也支持基于文件的采集
• 新的 Nitris DX 3D 选件卡
• 全新的AAF输出Metadata
• 支持输出文件格式
• 支持第三方硬件
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Stereoscopic 3D – 系统安装/不同选择
• 纯软件系统
– 第二个显示器上全屏播发
– 支持3D Vision (只支持 PC )
– 实时的性能取决于机器的性能
• 当前的DX 硬件系统
– 只支持无压缩的项目
– 如果是压缩格式需要采集2倍的时间
– 一半的生成速度因为只有一个编码模块
• DX 3D 硬件系统
– 支持压缩的和无压缩的双路基带信号采集(2xDNx 2xAVC I)
– 2个编码模块可以全速的使用硬件DNxHD渲染
• 使用第三方硬件的系统
– 所有第三方的硬件在当前版本只支持帧兼容的方式
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Stereoscopic 3D – 纯软件的方式
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Stereoscopic 3D – 硬件配置
NOTE: NitrisDX HDMI output is v1.3 so although it
allows Frame Compatible output it doesn’t indicate
the 3D format to the monitor
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Stereoscopic 3D
• 立体文件支持：
– 帧兼容模式 Side by side
Right
Left
– 帧兼容模式Over/ under
Left
Right
– 全帧模式
Left
Right
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Stereoscopic 3D
项目创建时对于3D的支持
• 创建不同的3D项目
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Stereoscopic 3D – 基带信号采集设置
采集设置
基带信号采集:
• 在立体项目中选择素材的类型
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Stereoscopic 3D – 文件夹的属性选项
• 文件夹的属性选项
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Stereoscopic 3D – 创建立体素材
通过主素材创建立体素材
• 每个立体文件支持5个主素材. (左眼，右眼，上下，左右，普通的2D素材 )
• 选择主素材创建立体素材
• 使用图中命令 “Create Stereoscopic clips…” 选中素材右键.
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Stereoscopic 3D –立体监看
右键点击源
和录制窗口
© Avid 2011
Avid confidential and proprietary information – Please do not copy, forward, redistribute, or publish
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Stereoscopic 3D –立体监看
S3D效果安全阀值
左右眼画面超过
了安全阀值
左右眼画面在安
全阀值之内
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Stereoscopic 3D – 立体效果的修复
• 修复颜色错误
选择左眼做颜
色校正
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Stereoscopic 3D – 立体效果的修复
• S3D Spatial Alignment 特技
– Vergence (HIT) – 可以左右画面同时调整，也可以选择
锁住一个画面（比如：主导画面），调整另一个的画面
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Stereoscopic 3D – 立体效果的修复
S3D Spatial Alignment: Vergence – set depth position – converge on the ball (= zero
parallax).
3D display
-ve
Parallax
0
+ve
Zero
Parallax
+ve
Parallax
Cinema
Projection
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Stereoscopic 3D – 立体效果的修复
S3D Spatial Alignment: Vergence – set depth position – converge on the dog
-ve
3D display
Parallax
0
+ve
-ve
Parallax
Zero
Parallax
+ve
Parallax
Cinema
Projection
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立体窗口出错 使用 floating window 修复
No violation
Window violation on smiley
Floating window - Mask applied to left eye, left edge
Try moving your cursor around on screen to ‘feel’ the depth of the smiley in each example
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Stereoscopic 3D – S3D 特效介绍
• Stereoscopic 专用特效
Effect
Description
S3D Spatial alignment
Allows you to realign left and right eye images using translation, scaling, shearing or rotational controls.
This effect contains alignment tools as well as the Vergence and Floating Window effects.
S3D Vergence
Allows you to adjust the horizontal disparity between the two eyes. This is often known as Horizontal Image
Translation (HIT)
S3D Floating Window
S3D Depth Transition
Allows you to crop out an unwanted area of either the left or right eye image. For example, cropping out edge
violations that are visible in one eye but not the other.
When transitioning from one clip to another, this effect allows you to adjust the depth on each clip for a seamless
transition.
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Stereoscopic 3D – 添加特技 S3D Depth Transition
S3D Depth Transition
• Remember: every edit causes the viewer to re-fuse
the 3D image sequence.
• Longer shots and less cuts are desirable in 3D. Some directors and audiences
are used to quick edits e.g. Football match, perhaps its time to slow things
down again? Use 5 sec cuts as a absolute minimum.
• Depth Continuity is important too, the depth
bracket of out/in shots MUST overlap.
• You can't cut 3D to/from anywhere, otherwise
the 3D effect is discontinued with a break in
belief for the audience and maybe discomfort
with “double vision” too.
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Stereoscopic 3D – 添加特技 S3D Depth Transition
S3D Depth Transition
Active Depth Cuts: When a depth cut is required E.g. When shot changes from one with negative
parallax (out of screen) to another with all positive parallax (all behind screen) then create a moving
depth cut:
Cinema Plan view
Screen
R
L
L
R
CUT?
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Stereoscopic 3D – 添加特技 S3D Depth Transition
S3D Depth Transition
Active Depth Cuts: When a depth cut is required E.g. When shot changes from one with negative
parallax (out of screen) to another with all positive parallax (all behind screen) then create a moving
depth cut:
Change the convergence of the outgoing shot to a neutral depth just before the edit and start the
incoming shot at the same depth before re-converge the shot to its original depth position. Keep the
changing depth speed constant across the cut and slow enough just not to be noticed. The neutral
depth will most likely be zero parallax at screen depth but doesn't have to be.
Cinema Plan view
Screen
R
L
Cinema Plan view
Screen
R
L
CUT
R
L
L
R
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Stereoscopic 3D – 添加字幕或者图片
图片，字幕
These can be tricky, especially for live 3D production, eg sport. Remember depth continuity.
Graphics, captions etc should be placed unobtrusively and NOT cause occlusion.
The obvious solution is often to put the graphic in negative parallax, closer than any action, but for
say subtitles this is not subtle. For subtitles animated positioning may be required plus depth
tracking to match the point of interest and scaling to track with depth.
Screen
Screen
2D Title sits at zero parallax
(screen depth) and occludes
smiley creates edge violation
3D Title brought closer than
any other object, so doesn’t
create violation
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Stereoscopic 3D – 字幕的3D调整
添加字幕到立体素材上
• Titles or other graphic objects applied in a stereoscopic project have
vergence control to allow you to position the title in Z-space or depth.
Remember to keep the Title within the Depth Budget.
• NOTE Titles for stereoscopic projects must be created in the Avid
editing application. You cannot import them from 3rd-party applications.
• Use Title Tool or Marquee to create your S3D Title
• You can also promote this
title to a 3D effect by
clicking the 3D Promote
button. This will give you
additional features like 3D
borders, drop shadow,
page curls, smooth curve
movement, and rotation.
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Stereoscopic 3D – 通道图层的3D调整
• 通道图层也可以调整其3D效果
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Stereoscopic 3D – 输出
立体项目输出
• You can output a stereoscopic sequence to a baseband device (such as a tape deck or disc
recorder), or you can export the sequence to a file format such as QuickTime.
NOTE: If you have any
standard (non-stereo) material
in the sequence, it will use the
same image for both the left
and right eye.
Stereoscopic 项目格式
例如 QT .mov 输出
Full: Both eyes exported at full resolution
(No QT Ref support)
Two files exported: Video_L.mov and Video_R.mov
Side-by-side: Frame compatible
Single file created: video_SS.mov
Over/Under: : Frame compatible
Single file created: video_OU.mov
Leading eye, Left eye only, Right eye only:
Single file created: video.mov
• For Baseband video the output format is primarily governed by the Stereoscopic Project Format,
however as we have seen this can be overridden by the Video Output tool
• You can also export your sequence to another system for finishing. Avid editing applications can
export an AAF, ALE, or EDL file that contains the editing information (metadata) for the selected
sequence, along with the video and audio media files for the master clips within the sequence.
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Stereoscopic 3D – 输出
• 元数据输出
– 通过AAF输出元数据文件
•
All of the information about the source attributes, stereo clip attributes and effects attributes are
present in this file
– We will look to see if the AAF toolkit can be extended to provide 3rd parties access
to our stereo parameters in the combiner effect.
– We will also provide a way for 3rd parties to create the S3D group, channel and
other information in the mono master clips and stereo clips
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谢谢大家！