BTS :: OutlyerNet :: Mon, 09 May 2022 21:37:05 +0000 BTS :: OutlyerNet :: vcs: Recently opened tasks FS#378: Blank frame evasion produces error on latest ImageMagick Toni Corvera Mon, 09 May 2022 21:37:05 +0000 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

FS#377: Allow screenshotting half of the video (for side-by-side VR videos) Toni Corvera Wed, 03 Feb 2021 17:11:00 +0000 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?
FS#375: Allow disabling blank frame evasion Toni Corvera Wed, 11 Mar 2020 19:33:42 +0000 Should allow to disable it in both configuration and command-line.

FS#373: Number of columns is ignored Toni Corvera Mon, 25 Nov 2019 11:19:38 +0000 First reported on BSD and Debian 10 (reproducible), apparently tied to some updated tool

FS#367: Add HDR support Toni Corvera Thu, 09 May 2019 00:19:29 +0000 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.
FS#366: Release 1.13.4 Toni Corvera Wed, 27 Feb 2019 00:47:12 +0000 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.

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FS#365: File sizes are rounded Toni Corvera Wed, 27 Feb 2019 00:30:26 +0000 Reported by remlap

File sizes are displayed as 3.00GiB instead of 3.54GiB

FS#364: Evasion offsets aren't walked over in array Toni Corvera Fri, 04 Jan 2019 14:52:37 +0000 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
FS#363: File names with '#' lead to errors when creating versioned output files Toni Corvera Thu, 22 Mar 2018 20:33:06 +0000 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.

FS#323: Codec information is misaligned/cropped Toni Corvera Tue, 16 May 2017 19:07:47 +0000 Originally reported by Markus and Wade

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