Video Blog

Video v0.2 Releace Candidate

:: release

By: Leif Andersen

Update: We have released a second release candidate. This fixes several bugs users have posted on the issue tracker.

The first release candidate for Video v0.2 has been released! You can install it from the command line with:

raco pkg install video-testing

As before, the video Racket package points to the latest stable version (v0.1 when writing this post), so use video-testing to download the RC.

You can report any bugs you find here:

Here is a list of the major changes from the last beta:

  • Update Video to use a version of libvid that does not segfault.
  • More precise dependencies in Video’s info file.
  • If FF_LOG=stdout, then do no redirection of ffmpeg’s logging.
  • More complete render parameterization.
  • Cleaner error messages.
  • Fixed bug preventing Video from rendering audio-only files.
  • Pause feature no longer additionally stops the video.
  • Improved audio/video syncing in live preview.
  • Fixed bugs in front half of Video compiler.
  • Made ‘canvas’ an optional parameter

Video v0.2 Beta

:: release

By: Leif Andersen

Today we are announcing the first stable beta for Video. To install it, you can first install Racket, and then run:

raco pkg install video-testing

Alternatively, within DrRacket, go to File -> Install Package, and type in video-testing.

Either way, make sure you installed video-testing, the video package points to the latest stable build of Video, which is v0.1.1 at the time of this release.

The documentation for this version can be viewed on the Racket documentation website. Unlike with the Alpha builds, the documentation has been updated to reflect the new version. As such:

Video v0.2-beta is now mature enough for programmers to reliably use it without segfaults.

The above sentence is significant because it means Video is now one of the most stable open source video production tools available.

Video v0.2 Alpha

:: release

By: Leif Andersen

Update2 A third alpha is released. This should be the last alpha build. The next release will be a beta. You can download the build here.

Update: A second alpha release has been created. This fixes some bugs preventing Video from working on Windows and Linux. Video has now been tested on all three platforms. You can download the build here.

This is an alpha version of Video v0.2. The main update here is dropping MLT as a dependency, and bundling FFmpeg for Windows and Mac builds. As such, Video can be used out of the box on now, without the need to hunt down the more obscure MLT library separately. Linux machines must still download the correct version of FFmpeg themselves. However, this is much easier to do.

Specifically, FFmpeg 3.2 is recommended, but the following specific library versions are also usable:

  • libavcodec v57
  • libavformat v57
  • libavutil v55
  • libswscale v4
  • libswresample v2
  • libavfilter v6

Again, these are included for the mac/windows builds, and are all part of an FFmpeg 3.x installation.

Some notes about why this is still alpha:

  • The video preview currently does not work. People needing access to this feature need to use v0.1.1.
  • Video has not been thoroughly tested

Once the first one has been addressed we can move to beta, and once both have been addressed we can move to rc.

You can download the release here.

Please report any issues you find on the bug tracker. (If you don’t have a github account you can also use this anonymous form.