alias bat

3. 4. 2026

alias bat='batcat -n --theme 1337'

gives

batcat 1337

GOP for dummies

30. 3. 2026

GOP = Group of Pictures. Quote from https://en.wikipedia.org/wiki/Group_of_pictures:

Generally, the more I frames the video stream has, the more editable it is. However, having more I frames substantially increases bit rate needed to code the video.

Chatgpt constructed bash script that echoes some I,P,B data in video stream could look like

#!/usr/bin/env bash

# GOP 
# usage: gop file.mp4

input="$1"

ffprobe -v error \
-select_streams v:0 \
-show_frames \
-show_entries frame=pict_type,pkt_size \
-of csv=p=0 "$input" |
awk -F',' '
{
    type=""
    size=""
   
    for (i=1; i<=NF; i++) {
        if ($i ~ /^[IPB]$/) type=$i
        if ($i ~ /^[0-9]+$/) size=$i
    }
    
    if (!type && size) type="I"
    
    if (type && size) {
        if (type=="I") sym="I────"
        else if (type=="P") sym="  P  "
        else sym="    B"
        
        printf "%6d  %s  %8d bytes\n", NR, sym, size
    }
}
'

Or a version of this script that adds bitrate distribution ascii art. Ascii bitrate is fit to fill normalized.

Typical cineform mov, all frames are I frames (ffprobe will not return frame type, so script assumes I type):

I────    948632 bytes  ####################
I────    992096 bytes  #####################
I────   1122612 bytes  ########################
I────   1100060 bytes  ########################
I────   1022352 bytes  ######################
I────    986004 bytes  #####################
I────    965564 bytes  #####################
I────   1077204 bytes  #######################
I────   1076352 bytes  #######################
I────    950700 bytes  ####################
I────    975628 bytes  #####################
I────    965556 bytes  #####################
I────   1083288 bytes  #######################
I────   1135564 bytes  #########################
I────   1041004 bytes  ######################
I────   1002624 bytes  ######################
I────   1004092 bytes  ######################
I────   1119344 bytes  ########################
I────   1083284 bytes  #######################
I────   1004480 bytes  ######################
I────    914176 bytes  ####################
I────   1304372 bytes  ############################
I────   1377500 bytes  ##############################
I────   1250604 bytes  ###########################
I────   1313788 bytes  #############################
I────   1377376 bytes  ##############################
I────   1319956 bytes  #############################
I────   1391172 bytes  ##############################
I────   1433520 bytes  ###############################
I────   1386680 bytes  ##############################

Typical ultrafast x.264 (screen recording), doesn’t bother with B frames

  P        5460 bytes  
  P        6516 bytes  
  P      384257 bytes  #############
  P      362919 bytes  ############
  P      326074 bytes  ###########
  P      263442 bytes  #########
  P       87488 bytes  ###
  P       65892 bytes  ##
  P        9293 bytes  
  P        5598 bytes  
  P        7197 bytes  
I────   1141412 bytes  #######################################
  P        6487 bytes  
  P        5613 bytes  
  P        5381 bytes  
  P        7852 bytes  
  P        7703 bytes  
  P        6832 bytes  
  P        5816 bytes  
  P        6258 bytes  
  P        8294 bytes  
  P        9133 bytes  
  P        7064 bytes  
  P        5916 bytes  
  P        6739 bytes  
  P        7497 bytes  
  P       11224 bytes  
  P        8326 bytes  
  P        6563 bytes  
  P        5772 bytes  

Veryslow x.264 preset

I────    315818 bytes  ######################
    B     47189 bytes  ###
    B     70166 bytes  #####
    B     42643 bytes  ###
  P      173192 bytes  ############
    B     44142 bytes  ###
    B     68863 bytes  ####
    B     38564 bytes  ##
  P      161360 bytes  ###########
    B     41360 bytes  ##
    B     74461 bytes  #####
    B     41257 bytes  ##
  P      156506 bytes  ###########
    B     38385 bytes  ##
    B     72214 bytes  #####
    B     44863 bytes  ###
  P      164925 bytes  ###########
    B     37340 bytes  ##
    B     70971 bytes  #####
    B     42263 bytes  ###
  P      148882 bytes  ##########
    B     46404 bytes  ###
    B     79438 bytes  #####
    B     47978 bytes  ###
  P      141652 bytes  ##########
    B     45448 bytes  ###
    B     74540 bytes  #####
    B     49253 bytes  ###
  P      121988 bytes  ########
  P       66809 bytes  ####
I────    558483 bytes  ########################################

50 mbit XDCAM mpeg2 thing, GOP is 12 frames long, encoding type is CBR

  P      621621 bytes  #####################################
    B    122509 bytes  #######
    B    240468 bytes  ##############
  P      282998 bytes  #################
    B    163902 bytes  #########
    B    307325 bytes  ##################
I────    371411 bytes  ######################
    B    154834 bytes  #########
    B    134406 bytes  ########
  P      214273 bytes  ############
    B     82567 bytes  ####
    B    169461 bytes  ##########
  P      534457 bytes  ################################
    B     51703 bytes  ###
    B    112532 bytes  ######
  P      515012 bytes  ###############################
    B    116230 bytes  ######
    B    240436 bytes  ##############
I────    460713 bytes  ###########################
    B    172820 bytes  ##########
    B    176916 bytes  ##########
  P      317669 bytes  ###################
    B     76998 bytes  ####
    B    188748 bytes  ###########
  P      537142 bytes  ################################
    B     63332 bytes  ###
    B    139571 bytes  ########
  P      544844 bytes  ################################
    B     89880 bytes  #####
    B    258842 bytes  ###############
I────    496320 bytes  #############################

Smart conclusion here.

Clock With No Numerals

30. 3. 2026

No Roman numerals. No Arabic numerals. No left-to-right reading direction. No assumed orientation. Something that works in a mirror, in zero gravity, in any language spoken on Earth or beyond it.

https://tonygaeta.com/perceptor/code/gonon https://news.ycombinator.com/item?id=47532338

How can complexity be reduced? Perhaps fifteen minutes could become the new smallest unit, then 24 times 15 equals 96, which is divisible by 6 (and 6 might be the most complex shape that can be perceived quickly). So 4 units is one old hour. To be continued.

p.s. Minutes and seconds should probably not intersect, it is just visually annoying, they could be aligned so that bigger unit is on top.

After effects, time to y position expression

23. 3. 2026

This goes on 3d layer Position expression

VAR = time * 100;
[value[0], value[1] - VAR, value[2]]

Stonewall defense

20. 3. 2026

What to play against d4 (london and such)
https://www.youtube.com/watch?v=U2goEzw3L-o

Wander

19. 3. 2026

A tiny, decentralised tool to explore the small web

https://news.ycombinator.com/item?id=47422759
https://susam.net/wander

click ‘Wander’ to reload a new page.

Subtitles rendered progressively?

16. 3. 2026

Premiere 2025

The problem: Subtitles burned into video on export, but the wanted export is progressive. Result: Weird looking subtitles, like some sort of interlaced brokage.

ChatGPT:

Select the caption track.
Graphics and Titles → Upgrade Caption to Graphic
Premiere creates Essential Graphics text layers.

Those render per frame, not per field.

endChatGPT

They still look weird if video is exported as progressive.