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• ffmpeg -hls_time option not working correctly when running as a service

  4 février 2019, par aexposito

  I am running a ffmpeg command as a systemd service to catch a live RTSP stream and generate hls chunks, the chunks are set to be 30 seconds long with the -hls_time option, when I run the command on the console myself it works ok, but when it runs from the service chunks, wish are supposed to be 30 seconds long are 7 or 8 seconds.
  This is the command :

  /usr/bin/ffmpeg -rtsp_flags prefer_tcp -i
  "rtsp ://192.168.1.16:554/user=admin&password=&channel=1&stream=1.sdp"
  -acodec copy -vcodec copy -hls_time 30 -hls_list_size 10 -hls_flags append_list+delete_segments -f hls -use_localtime 1
  -hls_segment_filename "/home/zurikato/video-backup/$FILENAME_FORMAT_hls.ts"
  /home/zurikato/video-backup/playlist.m3u8

  I’m a beginner in ffmpeg and linux services, so please indulge me if it is a simple matter.
  Thanks in advance

• FFmpeg command works locally but not on Azure Batch Service

  10 août 2018, par Elgert

  I have a command that generates a video with background and text on it with FFmpeg and would like to render it using Azure Batch Service. Locally my command works :

  ./ffmpeg -f lavfi -i color=c=green:s=854x480:d=7 -vf "[in]drawtext=fontsize=46:fontcolor=White:text=dfdhjf dhjf dhjfh djfh djfh:x=(w-text_w)/2:y=((h-text_h)/2)-48,drawtext=fontsize=46:fontcolor=White:text= djfh djfh djfh djfh djf jdhfdjf hjdfh djfh jd fhdj:x=(w-text_w)/2:y=(h-text_h)/2,drawtext=fontsize=46:fontcolor=White:text=fh:x=(w-text_w)/2:y=((h-text_h)/2)+48[out]" -y StoryA.mp4

  while the one generated programatically with C# and added as a task in batch service retursn failure :

  cmd /c %AZ_BATCH_APP_PACKAGE_ffmpeg#3.4%\ffmpeg-3.4-win64-static\bin\ffmpeg -f lavfi -i color=c=green:s=854x480:d=7 -vf "[in]drawtext=fontsize=46:fontcolor=White:text=dfdhjf dhjf dhjfh djfh djfh:x=(w-text_w)/2:y=((h-text_h)/2)-48,drawtext=fontsize=46:fontcolor=White:text= djfh djfh djfh djfh djf jdhfdjf hjdfh djfh jd fhdj:x=(w-text_w)/2:y=(h-text_h)/2,drawtext=fontsize=46:fontcolor=White:text=fh:x=(w-text_w)/2:y=((h-text_h)/2)+48[out]" -y StoryA.mp4

  The ffmpeg configuration works, and also the Pool as I’ve already tested it with simpler ffmpeg commands which had input and output files. This command doesnt have input file, maybe that is part of the problem ?

  Thank you

• Run 3 Docker images together as a single service

  20 juin 2018, par kitce

  I want to run 3 Docker images as a single service. They are the official nginx, jrottenberg/ffmpeg and a custom image.

  The custom image will return video files for HTTP requests on port 80, e.g. http:////video.mp4.

  I want to make the video files available for HLS in M3U8 playlist (or other better formats ?).

  The main idea is as follows :

  • Encode video.mp4, output video.m3u8 and segment files with ffmpeg
  • Serve the video.m3u8 and segment files with Nginx
  • The final and the only available web service of the container is http:///.m3u8.
  • Encode only when someone is requesting it (i.e. trigger the encoding when the first request comes, stop encoding and delete segment files when nobody requests it)

  I tested the HLS part with ffmpeg and it works. I am just not sure about how to put Nginx and ffmpeg to work together.