All Projects

This is a meta-item depending on bugs/features required to complete before releasing vcs 1.14

Previous:  FS#152   FS#218   FS#224   FS#250   FS#366 

This is a meta-item depending on bugs/features required to complete before releasing vcs 2.0.

v2.0 will be a rewrite in Python.

Previous: FS#153

No need for description

Reported by KW in comments: https://outlyer.net/2019-11-26:vcs-1-13-4-released/#comment-51875

With the new script I'm getting issues the following error:
No compatible version of getopt in path, can't continue.
Enhanced getopt (i.e. GNU getopt) is required

Added by Darko in comments: https://outlyer.net/2019-11-26:vcs-1-13-4-released/#comment-52719

The homebrew's version of vcs has this at line 186:
declare GETOPT=/opt/homebrew/opt/gnu-getopt/bin/getopt
While Toni's just uses whatever is on path:
declare GETOPT=getopt
… which on macOS is non-gnu version of getopt.

Added by X in comments: https://outlyer.net/2019-11-26:vcs-1-13-4-released/#comment-53401

The issue is on line 186. Brew version has this:
declare GETOPT=/usr/local/opt/gnu-getopt/bin/getopt
The trunk version has:
declare GETOPT=getopt
When I backport the most important change you did in the trunk version ('`fx:image.mean` > `fx:mean`') then indeed the error messages on '.mean*100' are gone.

Originally requested by Daniel

As reported by Dirk Reiners (paraphrased)

Files incorrectly reporting too short length (unlike too long), pass the safe_length_measure check ⇒ This prevents correcting length.

Request by Chris Hills

http://outlyer.net/2014-05-18:vcs-1_13_2-released/comment-page-1/#comment-17238:

Thanks Toni. I was hoping I could simply run `$ vcs-1.13.2.bash -? **/*.mp4` to create contact sheets for all videos in all subfolders, but it sounds like I’ll have to use a wrapper script. Would you consider adding this in a future release for a donation?

My reply:

I guess you’re using zsh-ish globbing there.
That’s not something I use so I didn’t even think of the case where recursing could be so simple.

It was a bit of an overlook on my part not to have the option to output to the same directory as the video, probably because recursion always required a wrapper in my head.

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?

No need for description

Being based on System V, it’s quite different to most other Unix-like OSes, might be a good target for x-platform enhancements

No need for description

-o is a GNU extension, supported in Linux and FreeBSD

Unsupported in SunOS, OpenBSD?

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.

Reported by Paul:

Hey,
I'm using VCS via Homebrew Install (https://formulae.brew.sh/formula/vcs#default) 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

Originally reported by Pär: https://outlyer.net/2019-11-26:vcs-1-13-4-released/comment-page-1/#comment-60689

Another thing that is a little bit annoying, but isn't a very big deal, is the fact that videos made from a phone where the image is rotated in metadata, doesn't produce a correct aspect ratio. For example, a video that is stored as 1920×1080 (16:9), but shown as 1080×1920 (9:16), due to metadata rotation, vcs will create thumbnails in 1920×1080 aspect ratio (16:9) but show them rotated correctly, which means the image at 9:16 gets squashed to fit into 16:9. Like I said, not a very huge deal, but it looks somewhat silly and it would be great if it was possible to fix.
I've tried to see if I could set the aspect parameter but it doesn't seem to do much when the rotation is made in metadata. Metadata usually state something like:
>
> "`bash
Side data:
displaymatrix: rotation of -90.00 degrees
"`

Originally requested by Phil Grundig

See vcs:devel:transcode

Great feature, implemented in mtn

http://moviethumbnail.sourceforge.net/

See also FS#126

The available configuration options need a serious review and renaming. Old names will be accepted with warnings for either two releases or six months.

Also, should provide a sample configuration file so that the syntax and options are clearer.

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

Their comments:

https://outlyer.net/2017-05-26:vcs-1-13-3-released/#comment-30901

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

Thanks

https://outlyer.net/2017-05-26:vcs-1-13-3-released/#comment-32413:

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…

https://outlyer.net/2017-05-26:vcs-1-13-3-released/#comment-32423

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.

Originally suggested by Dean: http://outlyer.net/2010-08-24:vcs-1_12-2-released/

” [...]

Second, my dvd-drive is useless atm, but i remember previously piping dvd-ouput from mplayer into ffmpeg via a fifo and finding the info generated to be much better than mplayer-alone – for one thing, it won’t ‘downmix’ 6-channel audio automatically. Don’t know if that would be useful to you. The syntax was something like:-

mkfifo piped.vob &&
mplayer dvd:// -dumpstream -dumpfile piped.vob & \
ffmpeg -i piped.vob

…See what you think…
”

Introduce new names in 1.12 ( FS#120 )

Remove old names in 1.13 or 1.14 (this)

See  FS#171 

See http://libav.org/, Jan 27 2012.
Also http://libav.org/index.html#fftools_rename for changes to the syntax.

Must change to avprobe/ffprobe and/or avconv.

/dev/shm isn’t really intended as an alternate temporary location, and VCS’ temporary files can easily grow too large for it too.

As a possible alternative offer a first-run choice of temp-dir (maybe suggesting /dev/shm).

References:
http://wiki.debian.org/ReleaseGoals/RunDirectory#Why_put_.2BAC8-dev.2BAC8-shm_and_.2BAC8-tmp_under_.2BAC8-run.3F http://stackoverflow.com/questions/9745281/tmp-vs-dev-shm-for-temp-file-storage-on-linux

When a frame evasion is tried and given up, the chosen timestamp should be the original instead of the last attempt