vcs

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Implementation notes:

• Reserved namespace: :<WHATEVER>
• Built-in profiles won’t use reserved names
• System profiles will always take precedence over built-in profiles
• ~ profiles take precedence over site (/usr and /usr/local) profiles
• /usr/local takes precedence over /usr. Both are searched
• No such thing as a default profile (this would be redundant to configuration files)
• Profiles can’t depend/include/load other profiles
• Profile names are reflected in file names

Specific files will be loadable with --config

Markup

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Use mktemp instead.

Originally reported by “o kapi”

Original report by ya at:

Video Contact Sheet *NIX v1.12, (c) 2007-2010 Toni Corvera
Processing <FILE>...
awk: BEGIN { if (4993,00000000000000000000 == 0) exit 0 ; else exit 1 }
awk:                 ^ syntax error
awk: BEGIN { if (4993,00000000000000000000 == 0) exit 0 ; else exit 1 }
awk:                                           ^ syntax error
awk: BEGIN { if (4993,00000000000000000000 == 0) exit 0 ; else exit 1 }
awk:                                                      ^ syntax error
awk: BEGIN { printf "%.20f", ((4993,00000000000000000000 - 4993.92))+0 }
awk:                                                               ^ syntax error
awk: BEGIN { printf "%.20f", ((4993,00000000000000000000 - 4993.92))+0 }
awk:                                                                ^ syntax error
awk: BEGIN { if (() < (0)) print (() * -1) ; else print () }
awk:              ^ syntax error
awk: BEGIN { if (() < (0)) print (() * -1) ; else print () }
awk:                ^ syntax error
awk: BEGIN { if (() < (0)) print (() * -1) ; else print () }
awk:                       ^ syntax error
awk: BEGIN { if (() < (0)) print (() * -1) ; else print () }
awk:                                 ^ syntax error
awk: BEGIN { if (() < (0)) print (() * -1) ; else print () }
awk:                                       ^ syntax error
awk: BEGIN { if (() < (0)) print (() * -1) ; else print () }
awk:                                                       ^ syntax error
...

Originally reported by Markus and Wade

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

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

Only basename should be printed instead.

Originally reported by Aleksandar Urosevic.

Example provided:

$ vcs -n4 -e8 Some\ File.avi
Video Contact Sheet *NIX v1.0.8a, (c) 2007 Toni Corvera
Overridden variable 'user' from file /home/user/.vcs.conf
Processing Farce of the Penguins.avi...
Generating capture #1/4 (19:46.30)...
Generating capture #2/4 (39:32.61)...
Generating capture #3/4 (59:18.91)...
Generating capture #4/4 (1:19:05.22)...
Composing standard contact sheet...
/home/user/bin/vcs: line 1358: 2*: syntax error: operand expected (error token is "*")
/home/user/bin/vcs: line 855: [: -eq: unary operator expected
(standard_in) 2: parse error
Internal error
(standard_in) 2: parse error
Internal error
Composing extended contact sheet...
montage: missing an image filename `/dev/shm/vcs.ZM9017/vcs-CT9439.png'.
convert: missing an image filename `/dev/shm/vcs.ZM9017/vcs-CT9439.png'.
Merging contact sheets...
Adding header and footer...
Done. Output wrote to Some File.avi.png
Cleaning up...

Solution provided: Don’t unset $tcnumcaps before extended pass

Originally reported by Chris Hills

“Failed to capture frame (at second xxx.yyy)”

Known bug, reported by various users.

E.g. on FreeBSD

pyth_th() uses **, accepted by gawk but not mawk

Also Ubuntu uses mawk by default.

Version 1.12.3 breaks on FreeBSD due to the usage of GNU-specific extensions of expr, sed and an incompatible Bash RE.

As reported by Dirk Reiners (paraphrased)

When steps get too small they might round to 0 ⇒ infinite loop in compute_timecodes.

Seen in HEVC contained in MPEG-TS

.