ffmpeg benchmarking

gistfile1.sh

# tested on Debian
# require ffmpeg@2.6.3 with --enable-libfreetype for drawtext extension

# ffmpeg streaming to ffserver feed
# file -> ffmpeg (playback) -> ffmpeg (add timestamp) -> ffmpeg (add timestamp) -> ffserver (FFM delivery)

ffmpeg -i your-file.mp4 -tune zerolatency -filter:v "setpts=1.0*PTS" -f nut pipe:1 \
  | ffmpeg -re -i pipe:0 -vf "drawtext=expansion=normal:fontfile=/usr/share/fonts/truetype/ttf-dejavu/DejaVuSans.ttf:reload=1:textfile=test.txt: x=50: y=50: fontcolor=white" -tune zerolatency -f nut pipe:1 \
  | ffmpeg -y -i pipe:0  -tune zerolatency http://ffserver-ip:7000/feed1.ffm

# ffmpeg client of ffserver stream

ffmpeg -rtsp_transport tcp -i rtsp://ffserver-ip:8544/live.mp4  -tune zerolatency -vf "drawtext=expansion=normal:fontfile=/usr/share/fonts/truetype/ttf-dejavu/DejaVuSans.ttf:reload=1:textfile=test.txt: x=50: y=70: fontcolor=white" output.mp4

# /etc/ffserver.conf
-------------------------------------------------------------------------------
HTTPPort 7000
HTTPBindAddress 0.0.0.0

RTSPPort 8544
RTSPBindAddress 0.0.0.0

MaxHTTPConnections 2000
MaxClients 1000
MaxBandwidth 1000

CustomLog -

<Feed feed1.ffm>
  File /tmp/feed1.ffm
  FileMaxSize 100M
</Feed>

<Stream test1.mpg>
  Feed feed1.ffm
  Format mp2
  AudioBitRate 32
  AudioChannels 1
  AudioSampleRate 44100
  VideoBitRate 64
  VideoFrameRate 24
  VideoSize 480x360
  VideoGopSize 12
  Preroll 0
  NoDefaults
</Stream>

<Stream live.mp4>
  Feed feed1.ffm
  Format rtp
  BitExact
  DctFastint
  IdctSimple
  VideoFrameRate 24
  VideoSize 480x360
  VideoBitRate 64
  VideoGopSize 10
  NoAudio
  PreRoll 0
  StartSendOnKey
  MaxTime 10000
</Stream>

<Stream stat.html>
  Format status
  ACL allow localhost
  ACL allow 192.168.0.0 192.168.255.255
</Stream>

<Redirect index.html>
  URL http://www.ffmpeg.org/
</Redirect>
-------------------------------------------------------------------------------

# test.txt updater
# run this file with python
-------------------------------------------------------------------------------
import time
logfile = 'time.txt'
f = open(logfile, 'r+')
for i in range (0, 50000000):
    time.sleep(0.05)
    f.seek(0)
    f.truncate(0)
    f.write(str(time.time()))
    f.flush()
f.close()
-------------------------------------------------------------------------------