CannonballSkippy

Convert audio to video with ffmpeg - examples

avectorscope

ffmpeg -i input.mp3 -filter_complex "[0:a]avectorscope=s=1920x1080,format=yuv420p[v]" -map "[v]" -map 0:a avectorscope.mp4

showcqt

ffmpeg -i input.mp3 -filter_complex "[0:a]showcqt=s=1920x1080,format=yuv420p[v]" -map "[v]" -map 0:a showcqt.mp4

ahistogram

ffmpeg -i input.mp3 -filter_complex "[0:a]ahistogram=s=1920x1080,format=yuv420p[v]" -map "[v]" -map 0:a ahistogram.mp4

juliojgarciaperez

require 'mechanize'
require 'pry'

L = 'https://www.facebook.com/v2.6/dialog/oauth?redirect_uri=fb464891386855067%3A%2F%2Fau' \
    'thorize%2F&scope=user_birthday,user_photos,user_education_history,email,user_relatio' \
    'nship_details,user_friends,user_work_history,user_likes&response_type=token%2Csigned' \
    '_request&client_id=464891386855067'.freeze

USER_AGENT = 'Mozilla/5.0 (Linux; U; en-gb; KFTHWI Build/JDQ39) AppleWebKit/535.19 (KHTML' \
             ', like Gecko) Silk/3.16 Safari/535.19'.freeze

max-mapper

1. compile ffmpeg for arm https://github.com/fiorix/ffmpeg-arm
2. create youtube 'live event'. get rtmp url + session id
3. run this:

raspivid -o - -t 0 -vf -hf -fps 30 -b 6000000 | ffmpeg -re -ar 44100 -ac 2 -acodec pcm_s16le -f s16le -ac 2 -i /dev/zero -f h264 -i - -vcodec copy -acodec aac -ab 128k -g 50 -strict experimental -f flv rtmp://a.rtmp.youtube.com/live2/<SESSION>

you can tweak -b and -fps to your liking. the settings above work well for 1080p. by not specifying width or height we get the full 1920x1080 resolution from the raspi camera

milafrerichs

Array::chunk = (chunkSize) ->
  array = this
  [].concat.apply [], array.map((elem, i) ->
    (if i % chunkSize then [] else [array.slice(i, i + chunkSize)])
  )