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• #2361 ekimaster tag Pocee #2358

  Új Válasz 2008-03-05 23:24:42 #2361

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  ekimaster

  tag

  válasz Pocee #2358 üzenetére

  Nos, nem egyszerű amit kérsz. Ugyanis renderelést tekintve ki mint vet, úgy arat. Sokan többféle megoldásra esküsznek, de azért vannak szabályok.

  Nagyon fontos tényező!
  A renderelés paraméterei mindenképp azonosak legyenek a videófilmed paramétereivel, ekkor kapod a legjobb minőséget.

  Output type
  Choose a setting from the drop-down list to specify the type of MPEG video to encode:

  MPEG-2
  Choose this setting to create a general MPEG-2 video.

  SVCD
  Choose this setting to create SVCD (super Video CD) MPEG-2 video.

  DVD
  Choose this setting to create an MPEG-2 file for use on a DVD.

  HDV
  Choose this setting to create MPEG-2 file (.m2t) for use on a HDV camera or deck.

  ATSC
  Choose this setting to create a high-definition MPEG-2 video (this format is meant to conform closely to the broadcast standard for HD).

  D-VHS
  Choose this setting to create a high-definition MPEG-2 video for use on data VHS tapes.

  Include video stream
  Select this check box if you want to include a video stream in your encoded MPEG file. The controls on the Video tab are available only when this check box is selected.

  If you’re creating an MPEG-2 file for an NTSC DVD and need to render separate audio and video streams, select this check box and render your audio stream as a separate file. Consult your DVD-authoring application’s documentation to determine the required format.

  If you’re creating an MPEG-2 file for a PAL DVD and need to render separate audio and video streams, select the Save as separate elementary streams check box on the System tab, and separate audio and video streams will be created. The video stream will be saved as an .m2v file, and the audio stream will be saved as an .mpa file.

  Width
  Type a value in the box to specify the width (in pixels) of the encoded video frames.

  NTSC SVCD
  480

  PAL SVCD
  480

  NTSC DVD
  720

  PAL DVD
  720

  Height
  Type a value in the box to specify the width (in pixels) of the encoded video frames.

  NTSC SVCD
  480

  PAL SVCD
  576

  NTSC DVD
  480

  PAL DVD
  576

  Frame rate
  Choose a setting from the drop-down list to specify the number of frames that will be encoded for each second of video.

  NTSC SVCD
  29.97

  PAL SVCD
  25.00

  NTSC DVD
  29.97

  PAL DVD
  25.00

  Aspect ratio
  Choose a setting from the drop-down list to determine the aspect ratio of your target display.

  Choose 4:3 for standard televisions or 16:9 for widescreen televisions.

  I-frames
  Choose a setting from the drop-down list to specify the number of frames between I-frames. I-frames contain all the data to draw a complete video frame.

  A setting of 15 is recommended if you’re creating MPEG files for DVDs or SVCDs.

  Insert I-frames at markers
  Select this check box if you want to create an I-frame that corresponds to each marker on the timeline.

  For example, you could select this check box when you want to use markers as chapter points in your encoded file.

  B-frames
  Choose a setting from the drop-down list to specify the number of B-frames that will be inserted between consecutive I- and P-frames.

  A setting of 2 is recommended if you’re creating MPEG files for DVDs and VCDs.

  P-frames, also known as "predicted frames" take advantage of the fact that successive frames of a video have areas of the frame that have not changed from previous frames. A P-frame contains only the data that has changed between frames. These frames cannot be played on their own since because all data needed to display the frame may not be present. There is no manual adjustment for P-frame frequency.

  B-frames, also known as "bidirectional predicted frames" are encoded like P-frames, except that they are calculated based on the data in both the previous and subsequent frames.

  Profile
  Choose a setting from the drop-down list to set the MPEG-2 syntax required for decoding the stream:

  High Profile
  Use for video-production equipment that requires 4:2:2.

  Main Profile
  Use for most television, VCR, and cable TV applications.

  Simple Profile
  Low-cost memory, e.g. no B pictures.

  The Main Profile setting is recommended for all NTSC and PAL DVDs and SVCDs. Change this setting only when required by specialized production environments.

  Level
  If you’re encoding an MPEG-2 file, choose a setting from the drop-down list to set the acceptable ranges of parameters — such as bit rate, sample rate, and the maximum allowed motion vector range — for your destination:

  High Level
  HDTV production rates: 1920 x 1080 x 30 Hz

  High 1440 Level
  HDTV consumer rates: 1440 x 960 x 30 Hz

  Main Level
  Main Level CCIR 601 rates: 720 x 480 x 30 Hz

  Low Level
  SIF video rate: 352 x 240 x 30 Hz

  We recommend using the Main Level setting if you’re creating MPEG files for NTSC or PAL DVDs or SVCDs. Change this setting only when required by specialized production environments.

  Field order
  Choose a setting from the drop-down list to determine the field order of the frames when drawn on the screen.

  Progressive Only should be specified when the video will be viewed on a computer.

  Interlaced, top field first and Interlaced, bottom field first are used when the video will be viewed on a television. Consult the hardware’s documentation for the proper interlacing method.

  Video quality
  Drag the slider to determine the quality of the video when rendered.

  A setting of 31 is recommended if you’re creating MPEG files for DVDs or SVCDs.

  Quality settings affect various types of material differently. With some experimentation, you may find that certain types of scenes can be rendered at lower quality settings (resulting in faster rendering times) with little or no apparent loss of quality. Other material may need the highest possible setting to achieve the desired quality level.

  Insert sequence header before every GOP
  Select this check box to insert a sequence header before every group of pictures (GOP). Some DVD-authoring software requires sequence headers at specified intervals.

  Constant bit rate
  Select this radio button and choose a setting from the drop-down list if you want to encode your file using a single bit rate.

  Variable bit rate
  Select this radio button if you want the encoder to vary your file’s bit rate to accommodate high- and low-motion changes in video. Variable bit rate files can produce higher picture quality and smaller file sizes than constant bit rate files.

  Two-pass
  Select this check box if you want to the encoder to analyze your files before encoding them.

  When the check box is selected, the encoder can produce higher-quality video, but the encoding process takes longer.

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