Bioblaze

ffmpeg -f lavfi -i anullsrc=r=11025:cl=mono -t <number of seconds> -acodec aac out.m4a

Bioblaze

#!/bin/bash
# generate mp4 animaition from still images with ffmpeg.

if [ $# != 2 ]; then
    echo "Usage: $(basename "$0") \"image/file/pattern_*.png\" output.mp4"
    exit -1
fi

pattern=$1
outputfile=$2

Bioblaze

if [[ "$1" == *.mp4 ]]
then
	/Users/me/bin/togif "$1"
fi
if [[ "$1" == *.png ]]
then
  /Users/me/bin/topic "$1"
fi

Bioblaze

#! /bin/bash

VBR="1500k"
FPS="30"
QUAL="veryfast"

YOUTUBE_URL="rtmp://a.rtmp.youtube.com/live2"
KEY=""

VIDEO_SOURCE="/home/ubuntu/video3.mp4"

Bioblaze

Compile NGINX with RTMP and setup Multi-Streaming

These Scripts will install NGINX with the RTMP Module in the usual directories similar to installation with apt-get.

The RTMP-Server you get with this can then be used to do one ore more of the following:

• deliver streams in a local network
• deliver streams to websites similar to youtube
• transcode rtmp streams to hls video
• publish to multiple streaming providers
• record livestreams to a harddrive

Bioblaze

# Encode a video in H.264 with a constant rate factor of 0 (visually non-lossy), run it through a filter for deinterlacing (Weston 
# Three-Field), and do not re-encode the audio
ffmpeg -i input.mkv -c:v libx264 -crf 0 -filter:v w3fdif -c:a copy output_edit-x264-crf0-w3fdif.mkv

# H.264 video at an average bitrate of 25MB/s, and just copy the audio
# - `-an` disables audio on first pass
# - `-y` automatically overwrites an existing output file, but don't worry since it's /dev/null on the first pass
ffmpeg -y -i input.mkv -c:v libx264 -b:v 25000k -pass 1 -an -f mp4 /dev/null && \
ffmpeg -i input.mkv -c:v libx264 -b:v 25000k -pass 2 -c:a copy output_edit-x264-abr25000.mkv

Bioblaze

ffmpeg -i filename.ogg -vn -c:a libopus -ar 16k -ac 1 -b:a 16k -vbr on -compression_level 10 new_filename.ogg

Bioblaze

# Output a single frame from the video into an image file:
ffmpeg -i input.mov -ss 00:00:14.435 -vframes 1 out.png

# Output one image every second, named out1.png, out2.png, out3.png, etc.
# The %01d dictates that the ordinal number of each output image will be formatted using 1 digits.
ffmpeg -i input.mov -vf fps=1 out%d.png

# Output one image every minute, named out001.jpg, out002.jpg, out003.jpg, etc. 
# The %02d dictates that the ordinal number of each output image will be formatted using 2 digits.
ffmpeg -i input.mov -vf fps=1/60 out%02d.jpg

Bioblaze

#!/bin/bash

# brew install x265
# brew install ffmpeg
# brew install youtube-dl
# brew install imagemagick

ID='U65_uY5N2WM' # YouTube video ID, i.e. https://www.youtube.com/watch?v={ID}

# fetch the video file with youtube-dl

Bioblaze

#!/bin/bash
# https://mtunn.wordpress.com/odroid-u2★セットアップ/radikoの録音・再生（archlinux）/

pid=$$
wkdir='/var/tmp'
playerurl=http://radiko.jp/player/swf/player_3.0.0.01.swf
playerfile="${wkdir}/player.swf"
keyfile="${wkdir}/authkey.png"
auth1_fms="${wkdir}/auth1_fms_${pid}"
auth2_fms="${wkdir}/auth2_fms_${pid}"