Paul Nice

youtube-dl --write-thumbnail  https://www.youtube.com/watch?v=W7li-_sDQKg

#! /bin/bash
#
# Пуш HD видео в youtube с помощью http://ffmpeg.org/

VBR="2500k"                                    # Bitrate для видео в кбит/с
FPS="30"                                       # FPS 
QUAL="medium"                                  # пресет для FFMPEG
YOUTUBE_URL="rtmp://a.rtmp.youtube.com/live2"  # RTMP пуш URL

SOURCE="udp://239.255.139.0:1234"              # Source UDP
KEY="...."                                     # ключ трансляции
ffmpeg \
    -i "$SOURCE" -deinterlace \
    -vcodec libx264 -pix_fmt yuv420p -preset $QUAL -r $FPS -g $(($FPS * 2)) -b:v $VBR \
    -acodec libmp3lame -ar 44100 -threads 6 -qscale 3 -b:a 712000 -bufsize 512k \
-f flv "$YOUTUBE_URL/$KEY"

ffmpeg -i 1.avi -i 2.avi -i 3.avi -i 4.avi -filter_complex "nullsrc=size=640x480 [base]; [0:v] setpts=PTS-STARTPTS, scale=320x240 [upperleft]; [1:v] setpts=PTS-STARTPTS, scale=320x240 [upperright]; [2:v] setpts=PTS-STARTPTS, scale=320x240 [lowerleft]; [3:v] setpts=PTS-STARTPTS, scale=320x240 [lowerright]; [base][upperleft] overlay=shortest=1 [tmp1]; [tmp1][upperright] overlay=shortest=1:x=320 [tmp2]; [tmp2][lowerleft] overlay=shortest=1:y=240 [tmp3]; [tmp3][lowerright] overlay=shortest=1:x=320:y=240" -c:v libx264 output.mkv