BTS :: OutlyerNet :: BTS :: OutlyerNet :: vcs: Recently opened tasks 2022-05-09T21:37:05Z FS#378: Blank frame evasion produces error on latest ImageMagick 2022-05-09T21:37:05Z 2022-05-09T21:37:05Z

Reported by Paul:

> Hey,
I’m using VCS via Homebrew Install ( and since the last update of imagemagick (?) I get dozens of error messages:

>convert: Expected operator at ‘.mean*100’ @ error/fx.c/GetOperator/2408

Confirmed to happen on ImageMagick 7.1 on Linux, the contact sheet is generated but blank frame evasion is skipped

Toni Corvera
FS#377: Allow screenshotting half of the video (for side-by-side VR videos) 2021-02-03T17:12:45Z 2021-02-03T17:11:00Z

Asked by Bob on the blog

Would it be possible to somehow specify to only screenshot half of the video image (for 180 side-by-side VR videos)?

Or would this require new features to be added to the VCS?
Toni Corvera
FS#375: Allow disabling blank frame evasion 2020-03-11T19:33:42Z 2020-03-11T19:33:42Z

Should allow to disable it in both configuration and command-line.

Toni Corvera
FS#373: Number of columns is ignored 2019-11-26T19:45:05Z 2019-11-25T11:19:38Z

First reported on BSD and Debian 10 (reproducible), apparently tied to some updated tool

Toni Corvera
FS#367: Add HDR support 2019-05-09T00:31:14Z 2019-05-09T00:19:29Z

HDR isn’t well supported as reported by remlap and ThaDr.

Their comments:

Hi I am trying to thumbnail some HDR content is there anyway to insert ffmpeg filters in
-vf zscale=t=linear:npl=100,format=gbrpf32le,zscale=p=bt709,tonemap=tonemap=mobius:desat=0,zscale=t=bt709:m=bt709:r=tv,format=yuv420p


I’m also trying to do some HDR content and pass the -vf info to ffmpeg. I can’t get it to work even using a wrapper script.

It always comes up with awk errors, starting with “unterminated regexp”.

Is there any chance of updating vcs to support manual passing of those -vf arguments to ffmpeg?

HDR content is very common nowadays…

I’m using vcs 1.13.2 on ubuntu and ended up doing it by adding the line:

-vf ‘zscale=t=linear:npl=100,format=gbrpf32le,zscale=p=bt709,tonemap=tonemap=hable:desat=0,zscale=t=bt709:m=bt709:r=tv,format=yuv420p’ \

at line 2203, in the ffmpeg_capture() function where it sets the ffmpeg command line options.

Couldn’t work out how to do it with a wrapper script.
Toni Corvera
FS#366: Release 1.13.4 2019-11-26T19:47:34Z 2019-02-27T00:47:12Z

This is a meta-item depending on bugs to be fixed in the 1.13.4 release.

1.13.4 is a minor bugfix release for bugs found while development for 1.14 and 2.0 is stalled.

Previous:  FS#152   FS#218   FS#224   FS#250 
Next: FS#153

Toni Corvera
FS#365: File sizes are rounded 2019-11-26T19:45:16Z 2019-02-27T00:30:26Z

Reported by remlap

File sizes are displayed as 3.00GiB instead of 3.54GiB

Toni Corvera
FS#364: Evasion offsets aren't walked over in array 2019-11-26T19:45:25Z 2019-01-04T14:52:37Z

Submitted by Davide Cavestro

The array EVASION_ALTERNATIVES isn’t looped over correctly. Correction:

-		for delta in $EVASION_ALTERNATIVES ; do
+		for delta in ${EVASION_ALTERNATIVES[*]} ; do
Toni Corvera
FS#363: File names with '#' lead to errors when creating versioned output files 2018-03-22T20:33:06Z 2018-03-22T20:33:06Z

I.e. create file sample#.avi

Run vcs on sample#.avi -> sample#.avi.png is created.
Run vcs again. sample#.avi-1.png should be created, but sed generates an error.

Toni Corvera
FS#323: Codec information is misaligned/cropped 2017-05-23T19:01:46Z 2017-05-16T19:07:47Z

Originally reported by Markus and Wade

The codec information box gets cropped with current versions of ImageMagick.

Toni Corvera