Difference between revisions of "WorkUnit:Carnages, credits generation"

Revision as of 19:10, 20 October 2017

Result of the scripts

watch this at full resolution (full HD), or you will not see anything :)

how does it works

notes for me and whoever might find this interesting

logo

the logo is using the 'ascii' font JS Cursive, slightly modified on the 'n'

  __  __,   ,_   _   __,   __   _   ,  
_(_,_(_/(__/ (__/ (_(_/(__(_/__(/__/_)_
                          _/_          
                         (/

that's a nice way to display other fonts in the terminal; see resources for links

information gathering

to retrieve the file information, i used ffprobe, it dumps a lot of info

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'carnages_creamy_patterns.mov':
 Metadata:
   major_brand     : qt  
   minor_version   : 512
   compatible_brands: qt  
   encoder         : Lavf56.40.101
 Duration: 01:39:01.03, start: 0.000000, bitrate: 200411 kb/s
   Stream #0:0(eng): Video: qtrle (rle  / 0x20656C72), rgb24, 1920x1080, 200408 kb/s, 30 fps, 30 tbr, 15360 tbn, 15360 tbc (default)
   Metadata:
     handler_name    : DataHandler
     encoder         : Lavc56.60.100 qtrle

for the credits, i just used the Stream #0:0, reformated as a tabbed list

other info comes from the file browser (nemo in my case)

scripting

here comes the interesting part!

the process requires a minimum of text editing: just create a media_*.py file containing the required vars (with correct types)

media info

example of media info file

WARNING: mediawiki removes the "'" chars, go to source to copy/paste! (append &action=edit to current url)

from styler import *
filename = style("b|yellow") + "carnages_teeny_black.mkv [#6]" + style("")
t_date= 		"date: " + style("b") + "20171019" + style("")
t_size= 		"size: " + style("b") + "2.507.349.390 bytes" + style("")
t_duration= 	"duration: " + style("b") + "00:08:16.8" + style("")
t_author = 		"author:" + style("b") + "françois zajéga" + style("")
t_credits = title font: JS Cursive By Joan Stark
t_stream = stream #0:0(eng): video: 
   mjpeg
   yuvj444p(pc, bt470bg/unknown/unknown)
   1920x1080
   SAR 1:1 DAR 16:9
   25 fps
   25 tbr
   1k tbn 
   1k tbc (default)
encoder: Lavc56.60.100 libx264
t_input= source:
   width: 1024
   height: 544

content of the video here above

the imported script comes from TerminalStyler

animation

the animation is done via another python script:

import os
import sys
import time
from styler import *

mediainfo = __import__( str( sys.argv[1] )[:-3], fromlist=["*"] )

############# config #############
margin = (4,10)
logo = 
                                         
  __  __,   ,_   _   __,   __   _   ,  
_(_,_(_/(__/ (__/ (_(_/(__(_/__(/__/_)_
                          _/_          
                         (/            
                                         

ret = style("_n")
t_mtop = style("_n" + str( margin[0] ) )
t_mlef = style("_s" + str( margin[1] ) )
logo_margined_y = style("_n" + str( margin[0] ) + "|cyan" ) + margin_left( logo, margin[1] ) + style("")
logo_margined_w = style("_n" + str( margin[0] ) ) + margin_left( logo, margin[1] ) + style("")
credits_margined = margin_left( mediainfo.t_credits, margin[1] )
stream_margined = margin_left( mediainfo.t_stream, margin[1] )
input_margined = margin_left( mediainfo.t_input, margin[1] )

############# frames #############

frames = []
frames.append( [t_mtop, 4] )
for i in range( 0, 5 ):
	if i % 2 == 0:
		frames.append( [logo_margined_w, 0.1] )
	else:
		frames.append( [logo_margined_y, 0.15] )
	frames.append( [style("_n" + str( margin[0] + 8 )), 0.1] )
frames.append( [logo_margined_y, 0.5] )
frames.append( [
	logo_margined_y + 
	ret + t_mlef + mediainfo.filename + 
	ret + t_mlef, 
	1] )

authinfo = ret + t_mlef + mediainfo.t_date + ret + t_mlef + mediainfo.t_size + ret + t_mlef + mediainfo.t_duration + ret + t_mlef + mediainfo.t_author
for i in range( linecount(stream_margined) ):
	frames.append( [
		logo_margined_y + 
		ret + t_mlef + mediainfo.filename +
		ret +
		ret + lines( authinfo, 0, i ), 
		0.05] )
frames.append( [
	logo_margined_y + 
	ret + t_mlef + mediainfo.filename +
	ret +
	ret + authinfo + ret, 
	5] )

techinfo = stream_margined + ret + input_margined
for i in range( linecount(stream_margined) ):
	frames.append( [
		logo_margined_y + 
		ret + t_mlef + mediainfo.filename +
		ret +
		ret + lines( techinfo, 0, i ), 
		0.05] )
frames.append( [
		logo_margined_y + 
		ret + t_mlef + mediainfo.filename +
		ret +
		ret + techinfo, 
		3] )
frames.append( [
		logo_margined_y + 
		ret + t_mlef + mediainfo.filename +
		ret +
		ret + techinfo +
		ret + credits_margined, 
		2] )

############# animation #############

for i in frames:
	os.system('clear')
	print( i[0] )
	sys.stdout.write( t_mlef )
	sys.stdout.flush()
	time.sleep( i[1] )

• __import__( str( sys.argv[1] )[:-3], fromlist=["*"] ) is super useful, as it allows to pass the media_*.py path as an rgument, without changing anything to this script
• margin represents the top and left margin of the text, expressed in returns and tabs
• frames is a list of the animation frame, with text at position 0 and duration at 1
• functions linecount and lines (from styler.py) allows to make the text animations easier: lines function truncates the block of text by lines (from, to)

Once all frames are packed, we just have to loop over them and print the text. Lines sys.stdout allows to offset the cursor by the left margin.

resources

• TerminalStyler - script to style the console output
• taag - online interface to use 'ascii' fonts
• FIGlet - a program for making large letters out of ordinary text
• figlet-fonts - collection of ascii art fonts for figlet or toilet
• asciinema - record and share your terminal sessions, the right way.