Video editing XP

From Wiki

Jump to: navigation, search

ouroou

Contents

[edit] Windows

Here are some instructions for editing a video on a Windows machine. If you can extend these instructions, or offer alternative tools for other operating systems, please feel free to extend this page.


[edit] Video editing tool

[edit] Audio processing tool

[edit] Alternative software (not covered here):

[edit] Re-sync audio and video from CamStudio

A long movie from CamStudio can become de-syncronised, so that the audio and the video don't match. There is a workaround, posted from the CamStudio blog: http://camstudio.org/blog/general/audiovideo-desynch-workaround 

Open up the AVI file in VirtualDub 
Click “Video”, “Frame Rate…”, and under “Source rate adjustment” choose “Change so video and audio durations match”.
Save using Direct Stream Copy

[edit] Extracting audio stream from a movie using VirtualDubMod

  • load the movie
  • Streams menu, select 'Stream list', in my test movie I see 1 audio stream, 'Source: Input AVI file' in 'Microsoft PCM Format'.
  • Select the stream, click 'Save WAV', wait for a few minutes whilst it extracts the audio
  • Now you have a .wav file, it could be quite large, it contains all the audio of the movie

[edit] Converting a stereo track to mono using Audacity

  • Load the audio track into Audacity
  • Select 'Tracks', 'Stereo to Mono', wait whilst it works

[edit] Raising the volume of an audio stream using Audacity

  • Load the audio track into Audacity
  • 'Edit', 'Select...', 'All' to select the entire audio sample
  • 'Effect', 'Amplify...', use the Preview button to set to a new volume, press 'Ok' and wait for it to process the audio

[edit] Converting an audio stream to MP3 using Audacity

  • 'File', 'Export as MP3...', set a filename and let it save the file

[edit] Replacing the audio track in a movie using VirtualDubMod

  • Assumption - you have loaded a movie and it has an audio track that needs replacing, you also have a new audio track of equal length to act as replacement
  • 'Streams', 'Stream list', select the original audio stream and hit Delete (or press the Disable button), this marks the audio stream with a cross-hatch pattern indicating that it is deactivated
  • Use the Add button to load in a new MP3, it needs to be the same length as the original audio stream
  • To save, we don't want to process the video stream, just the audio stream, so under 'Video' select 'Direct Stream Copy'
  • Under 'File' select 'Save as...', confirm that 'Video mode' is set to 'Direct stream copy', press Save, let VirtualDubMod work for a while
  • Play the video back inside a video player and confirm that you have the new audio track

[edit] Cut and Paste a section of video in VirtualDudMob

  • Use the slider, under Edit select 'Set selection start'
  • Move the slider to the end and under Edit select 'Set selection end'
  • Under Edit use 'Copy'
  • Move to the insertion point using the slider, under Edit 'Paste'
  • Confirm visually that the new scenes have been inserted, your video will be X seconds longer now

Note that when you save this as an AVI you'll have to select 'Full processing mode' rather than 'Direct Stream Copy' else you won't get the new scenes in the output video. When doing Full Processing, you probably want to select CamStudio Lossless Codec with the LZO (fast) option in the configuration.

[edit] Joining two AVI files together using VirtualDubMod

  • Open the first AVI file using 'File', 'Open Video File...'
  • Add the second AVI file using 'File', 'Append Segment...'
  • Choose 'Direct Stream Copy' under 'Video' so that the original codecs are used (this means it works really quickly)
  • Choose 'File', 'Save As...' and save the file out

You can append as many segments as you want with this method, it just joins subsequent parts after the last one and the join is made is with no gaps (the join looks seamless). This is a great way of joining together sections of a video if you're recording them in parts (just make sure that cursors and mice are in the same place so that the join doesn't look weird!).

After this you will have a new AVI file which is the first two videos seamlessly joined together. This summary is taken from a guide, the original guide is here: http://www.afterdawn.com/guides/archive/virtualdub_join_avi.cfm but note that it refers to the older VirtualDub (not VirtualDubMod) software.

Note that if you have a set of AVI files in numerical order in the same directory (e.g. part1.avi, part2.avi, part3.avi, part4.avi) and you open part1.avi and Append part2.avi, then save the output, it seems to append all of the videos together. Do them in sub-directories if you want fine control (this seems to be a buggy behaviour in VDMod).

[edit] Saving just a portion of the AVI file using VirtualDubMod

Use this method to extract a portion of a video, e.g. if you want minutes 3-10 of a 20 minute video. I use this to split long videos into segments.

  • Use Go To (Ctrl-G) to jump to a frame or timestamp
  • 'Set selection start' (under Edit) to mark the start-point (a small black mark appears on the time-line)
  • Use Go To to jump to the end of the section
  • 'Set selection end' (under Edit) to mark the end-point (a 2nd small black mark appears on the time-line)
  • Use File, Save As, choose Fast Recompress for the CamStudio Lossess Codec
  • Sit back for a short while whilst the new AVI section is saved to the new filename

[edit] Using VirtualDubMod's Job Control

When you click Save As you save the job for processing later (tick-box). Under File|Job Control... you can then choose to delete or postpone jobs, then Start to process the batch. This is useful if you have a lot of edits lined-up which will take some time.

Note - if you use Direct Stream Copy rather than Fast Recompress then you don't get the segment, you seem to get all the video. back to video editing

Retrieved from "http://wiki.showmedo.com/index.php/Video_editing_XP"
Personal tools