Recherche avancée

Sur d’autres sites (8279)

• Transcoding HD RTP/UDP stream with FFMPEG

  19 juin 2017, par SudoSu

  I’ve a Tera STI440 streamer with two inputs used (for TV channel streaming). When I watch the source stream it seems allright, but when I start FFMPEG transcoding, the image is going to collapse on random times (probably around every 5-15 sec). The transcoding is okay with SD 480P streams.

  FFPROBE one of my HD stream :
  `

  Input #0, rtp, from 'rtp://239.192.24.3:1234/':
  
    Duration: N/A, start: 18002.926656, bitrate: N/A
  
    Program 202 
  
      Metadata:
  
        service_name    : M5 HD
  
        service_provider: Magyar Televizio
  
      Stream #0:1: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(tv, bt709, top first), 1440x1080 [SAR 4:3 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
  
      Stream #0:0(hun): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 enter code herekb/s

  FFPROBE one of my SD stream (Which is working properly) :

  Input #0, rtp, from 'rtp://239.192.24.4:1234/':
  
    Duration: N/A, start: 51003.435044, bitrate: N/A
  
    Program 203 
  
      Metadata:
  
        service_name    : RTL Klub
  
        service_provider: Magyar RTL Telev�zi� Zrt.
  
      Stream #0:0: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(tv, bt470bg, top first), 720x576 [SAR 12:11 DAR 15:11], 25 fps, 25 tbr, 90k tbn, 50 tbc
  
      Stream #0:1(hun): Audio: aac_latm (HE-AAC) ([17][0][0][0] / 0x0011), 48000 Hz, stereo, fltp

  I want to do a HLS stream so I ran this script for FFMPEG :

  /usr/bin/ffmpeg -loglevel 16 -i rtp://239.192.24.3:1234/ -s pal -c:v libx264 -c:a libmp3lame -b:v 1000k -b:a 96k -ar 44100 -vf 'yadif=0:-1:1' -preset:v superfast -f hls -hls_time 7 -hls_list_size 10 -hls_wrap 10 -hls_base_url http://10.3.1.3:8080/ts/ -hls_segment_filename /tvman/hls_out/ts/M5_hq_%03d /tvman/hls_out/subplaylist/M5-hq.m3u8

  I access the playlist file from NGINX but also tried Apache too.
  Here’s some log from FFMPEG process (loglevel 16)

  I made some diagnostics :

  • Looked for network traffic (it’s around 60 mbps, so it should be okay with a 100mbps ethernet
  • CPU & RAM load allright
  • I reduced the network traffic by turning off TV channel streams on streamer. It was around 6-7 mbps.

  If you need any more information, I’ll provide it for you.
  Thanks for the help !

  P.S. : I’m not native English speaker, so sorry for mistakes. :)

• FFMPEG stream RTSP to RTMP (Youtube) add logo

  16 juin 2017, par Māris Purviņš

  To stream video from IP cam to Youtube I’m using code (through Ubunu) :
  ffmpeg -f lavfi -i anullsrc -rtsp_transport tcp -i rtsp ://user:psw@192.168.0.100:554 -tune zerolatency -vcodec libx264 -pix_fmt + -c:v copy -c:a aac -strict experimental -f flv rtmp ://a.rtmp.youtube.com/live2/ -nostdin -nostats /dev/null 2>&1 &

  It is a bee project for school
  I have two cameras and two streams :
  https://www.youtube.com/watch?v=ws-VcLXo-hI

  Everything is ok, but... I would like to know :
  1. How to add png logo to this strem. I have tried -i /home/user/rvvg_logo_round.png -codec:v libx264 -preset ultrafast -filter_complex overlay and another methods but without a result.
  2. Sometimes there is some problem during night and video streaming stops. How to automatically check process status and restart stream.
  I have tried to create sh file as described in http://videos.cctvcamerapros.com/raspberry-pi/ip-camera-raspberry-pi-youtube-live-video-streaming-server.html and put in cron job, bet that is only to check one cam process. Is there some better idea ?

• downloading and concatenating parts of videos from youtube

  17 octobre 2018, par amit

  I’m trying to create a video quiz, that will contain small parts of other videos, concatenated together (with the purpose, that people will identify from where these short snips are taken from).

  For this purpose I created a file that contain the URL of the video, the starting time of the "snip", and its length. for example :

  https://www.youtube.com/watch?v=5-j6LLkpQYY   00:00   01:00
  
  https://www.youtube.com/watch?v=b-DqO_D1g1g   14:44   01:20
  
  https://www.youtube.com/watch?v=DPAgWKseVhg   12:53   01:00

  Meaning that the first part should take the video from the first URL from its beginning and last for a minute, the second part should be taken from the second URL starting from 14:44 (minutes:seconds) and last one minute and 20 seconds and so forth.

  Then all these parts should be concatenated to a single video.

  I’m trying to write a script (I use ubuntu and fluent in several scripting languages) that does that, and I tried to use youtube-dl command line package and ffmpeg, but I couldn’t find the right options to achieve what I need.

  Any suggestions will be appreciated.