Difference between revisions of "Video"

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= PC build for video editing =
 
= PC build for video editing =
 
[http://www.makeuseof.com/tag/best-video-editing-4k-pc-build/ Video Editing 4K PC Build: Creating Content for Under a Grand]
 
[http://www.makeuseof.com/tag/best-video-editing-4k-pc-build/ Video Editing 4K PC Build: Creating Content for Under a Grand]
 +
 +
= Crop videos =
 +
[https://www.linuxuprising.com/2020/01/ffmpeg-how-to-crop-videos-with-examples.html?m=1 FFmpeg: How To Crop Videos, With Examples]
  
 
= Frame rate, bit rate =
 
= Frame rate, bit rate =

Latest revision as of 14:17, 9 January 2020

Video editing in Linux

DaVinci Resolve

LosslessCut

Shotcut

It is a cross-platform open source software. See The best free video editing software: Great tools for YouTube stardom and more

I tested inserting a text in a video. Compared to Youtube video editor

  • The text is really a text. No pop-up shape to select
  • Not sure how to control the text so it only appears at a certain time interval

Not as intuitive to use.

Pitivi

Blender

Looks very professional too. Windows/Linux/OSX (binary files are provided). Worth to try.

Kdenlive

More complicated than OpenShot. Worth to try. Ubuntu 16.04.1 is needed.

Flowblade

Free Linux Video Editor Flowblade 2.0 Released With Configurable Timeline Editing Workflow, New Tools

Youtube Video Editor

Good

  • Annotation and Title (Video Manager -> Videos -> Edit -> End screens and annotations -> Annotations -> Add annotations (Speech bubble, Note, Title, Spotlight, Label). However, the annotations do not show up on mobile. See this post for a discussion.
  • Add photos

Bad

  • Music cannot have fade in/out

Notes

7 Things You Need to Build a Low-Cost YouTube Studio

http://www.makeuseof.com/tag/build-low-cost-youtube-studio/

Free or Open source Subtitle editor

Comparison of subtitle editors

For TV captions, use white color font with black color for borders and transparent background.

OpenShot-qt

sudo apt-get install openshot

When I needed to export the video (choose 'youtube' profile, 'youtube-HD' target, 'HD 270, 29 .97 bps', and 'high' quality), I found I need to install libx264 code. On Ubuntu, I open software center and seach 'libavformat'. I choose 'libavformat-extra-53'.

An introduction to video editing in Openshot 2.0 from howtoforge.

Don't use the version (1.4.3 date 2009) because it crashed too often.

The new version 2.0.7 (date 2016) looks a little different (theme is black. Cool!). Its icon and command (openshot-qt) are different too. The project saved from 1.4.3 cannot be opened in 2.0.7. The tools icons are different: Add track, Snapping tool, Add Marker, Previous Marker, Next Marker, Zoom in/out.

This version of OpenShot + (old) Core2Duo Ubuntu = Dynamic Heatmap Viewer video.

Audio library

You can download free music from Youtube Audio Library. If you use a copy righted music and upload your video to youtube, the video will show Ad eventually.

Take a snapshot

The keyboard shortcut Ctrl+d does not work.

One suggestion is to use VLC. VLC -> Video -> Take Snapshot. The snapshot will be automatically created in ~/Pictures/ directory (*.png format).

Procedure

  1. Put audio and video files in one folder
  2. Use openshot to create a new video. Also
    • Use the +/- sign for zoom in and zoom out
    • Right click video file and select Volume -> Entire clip -> level 0%
    • Right click audio and select Volume -> End of clip -> fade out (slow)
  3. openshot -> Save (arrow/download-like button)
  4. openshot -> Export (red circle button)
    • Modify the file name so it won't overwrite the original (openshot won't check it)
    • Select Profile = Web, Target=Youtube-HD, Video Profile=HD 1080p 25 fps, Quality=High.
  5. Check the exported video (play it first by VLC).
    • On one instance the audio is fuzzy until the middle of the video. So I have to change the audio
    • On another instance the video length is longer than I expected because the final annotation slide lasts too long. A solution is to change the setting (Profile=All Formats, Target=MP4 (h.264), Video Profile=HD 1080p 24 or 23.98 fps). If I use 25 fps, the file will be wrong.
  6. Upload to Youtube. Use Youtube video editor to include annotation.

VideoLAN Movie Creator

ffdiaporama

Create videos from images, movie clips and music.

Flowblade Movie Editor

It is written in Python. Only Linux version is available (no Windows nor OS X). Good for beginners.

sudo apt-get install flowblade

Lightworks

Free and Pro versions are available. Windows/Linux/OSX.

Video rip/convert/transcoder

sudo add-apt-repository ppa:stebbins/handbrake-releases
sudo apt-get update
sudo apt-get install handbrake-gtk

sudo apt-get install handbrake-cli

To merge audio and video

# naive: use the one with longer duration as the total length
avconv -i music.m4a -i input.mp4 -acodec aac -strict experimental output.mp4
# improved: specify the start time (-ss) and duration (-t)
# unfortunately the music at the specified end time may not be the end
# so a better way is to use a video editor (eg OpenShot) and specify fade out on the end of the audio!
avconv -i music.m4a -i input.mp4 -acodec aac -strict experimental -ss 00:00:00 -t 00:01:01 -codec copy output.mp4

To extract audio only:

avconv -i INPUT.flv -codec copy -vn OUTPUT.mp4

PC build for video editing

Video Editing 4K PC Build: Creating Content for Under a Grand

Crop videos

FFmpeg: How To Crop Videos, With Examples

Frame rate, bit rate

Video Bitrate Vs. Frame Rate

Tips to Make Home Videos Look Professional

10 Simple Tips to Make Home Videos Look Professional