[FFmpeg-trac] #5463(ffmpeg:new): random crashes when reading realtime updated metadata from text file

[FFmpeg]

#5463: random crashes when reading realtime updated metadata from text file
---------------------------------+--------------------------------------
             Reporter:  m3gab0y  |                     Type:  defect
               Status:  new      |                 Priority:  normal
            Component:  ffmpeg   |                  Version:  git-master
             Keywords:           |               Blocked By:
             Blocking:           |  Reproduced by developer:  0
Analyzed by developer:  0        |
---------------------------------+--------------------------------------
 Summary of the bug: random crashes when reading realtime updated metadata
 from text file
 How to reproduce:

 ffmpeg -i 'http://149.13.0.81/nrj.ogg' -itsoffset 8.0 -i
 'http://149.13.0.81/nrj.ogg' -loop 1 -i '/cnc/scr/radio.jpg'
 -filter_complex "scale=400:320,drawtext=fontfile=/usr/share/fonts/truetype
 /ttf-dejavu/DejaVuSans-Bold.ttf: text='Radio Energy (Test)':
 fontcolor=white at 0.8:fontsize=18: x=(w-text_w)/2:y=(h-text_h-
 line_h)/2+90,drawtext=fontfile=/usr/share/fonts/truetype/ttf-dejavu
 /DejaVuSans-Bold.ttf:  textfile='/cnc/scr/radio.txt': reload=1:
 fontcolor=white at 0.8:fontsize=12: x=(w-text_w)/2:y=(h-text_h-line_h)/2+120"
 -r 25 -map 1:a -map 0:a -codec:v libx264 -profile:v high -preset veryfast
 -threads 0 -b:v 100k -maxrate 100k -bufsize 150k -g 400 -metadata
 publisher="m3gab0y" -metadata service_provider="root at m3gab0y.com"
 -metadata service_name="Radio (Test)"  -c:a:1 libfdk_aac -b:a:1 16k -c:a:0
 libfdk_aac -b:a:0 96k  -f mpegts "udp://127.0.0.1@239.254.254.254:1000"

 ffmpeg version 2.6.git Copyright (c) 2000-2015 the FFmpeg developers
   built with gcc 4.9.2 (Debian 4.9.2-10)
   configuration: --prefix=/root/ffmpeg_build --pkg-config-flags=--static
 --extra-cflags=-I/root/ffmpeg_build/include --extra-
 ldflags=-L/root/ffmpeg_build/lib --bindir=/root/bin --enable-gpl --enable-
 libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame
 --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx
 --enable-libx264 --enable-libx265 --enable-nonfree
   libavutil      54. 26.101 / 54. 26.101
   libavcodec     56. 41.101 / 56. 41.101
   libavformat    56. 34.100 / 56. 34.100
   libavdevice    56.  4.100 / 56.  4.100
   libavfilter     5. 16.101 /  5. 16.101
   libswscale      3.  1.101 /  3.  1.101
   libswresample   1.  2.100 /  1.  2.100
   libpostproc    53.  3.100 / 53.  3.100
 Hyper fast Audio and Video encoder
 usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options]
 outfile}...

 Output logfile:
 http://pastebin.com/FMpmECEW

 It crashes at random but most crashes are when ffmpeg matches a write in
 the file (metadata upodate)
 If this is not considered a bug, how can we resolve this? Maybe instruct
 ffmpeg to read the file at given intervals or receive this info from the
 outside via piped call, etc.?

 Any info is welcome!

--
Ticket URL: <https://trac.ffmpeg.org/ticket/5463>
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