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• ffmpeg stream on docker

  5 juin 2017, par Alexander S.

  I am new to the docker and ffmpeg.
  I am trying to do following POC, using "jrottenberg/ffmpeg" container : stream video from my video camera to docker container, and got it back from docker container. First, I checked, that all working locally. Stream from video camera (I don’t know exactly, what are all those parameters, but I found it working) :

  ffmpeg -rtbufsize 1500M -re -f dshow -video_size 1280x720 -framerate 30 -r 30 -i video="Lenovo EasyCamera" -pix_fmt yuv420p -vcodec libx264 -vprofile baseline -an -strict experimental -f mpegts udp://localhost:1234

  Now playing the stream :

  ffplay.exe udp://localhost:1234

  See video, all fine. Now I am changing localhost to docker-machine ip udp://192.168.99.101:1234

  Running docker container, with port forwarding :

  docker run -p 1234:1234/udp -p 5555:5555/udp jrottenberg/ffmpeg -i udp://0.0.0.0:1234 -f mpegts udp://0.0.0.0:5555

  It seems to work. Here the docker output :

  logs

  PS C:\> docker logs d96094fc41e0
Input #0, mpegts, from 'udp://0.0.0.0:1234':
 Duration: N/A, start: 21.466667, bitrate: N/A
 Program 1
   Metadata:
     service_name    : Service01
     service_provider: FFmpeg
   Stream #0:0[0x100]: Video: h264 ([27][0][0][0] / 0x001B), yuv420p(progressive), 1280x720, 30 fps, 30 tbr, 90k tbn, 60 tbc
Stream mapping:
 Stream #0:0 -> #0:0 (h264 (native) -> mpeg2video (native))
Press [q] to stop, [?] for help
Output #0, mpegts, to 'udp://0.0.0.0:5555':ime=-577014:32:22.77 bitrate=  -0.0kbits/s speed=N/A
 Metadata:
   encoder         : Lavf57.71.100
   Stream #0:0: Video: mpeg2video, yuv420p, 1280x720, q=2-31, 200 kb/s, 30 fps, 90k tbn, 30 tbc
   Metadata:
     encoder         : Lavc57.89.100 mpeg2video
   Side data:
     cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
frame=  214 fps= 70 q=31.0 size=     990kB time=00:00:11.96 bitrate= 678.1kbits/s speed=3.89x

  ps

  PS C:\> docker ps
CONTAINER ID        IMAGE                COMMAND                  CREATED             STATUS              PORTS                                            NAMES
d96094fc41e0        jrottenberg/ffmpeg   "ffmpeg -i udp://0..."   5 minutes ago       Up 5 minutes        0.0.0.0:1234->1234/udp, 0.0.0.0:5555->5555/udp   hungry_poitras

  But, when i try to connect via ffplay :

  ffplay.exe udp://192.168.99.101:5555

  I see nothing...

  I am using docker toolbox for Windows, and VirtualBox VM.
  Any ideas ?

• Streaming to localhost using FFmpeg doesn't work

  16 février 2023, par jostanise

  I'm trying to stream my screen using FFmpeg, but I can't access it using VLC player - it keeps loading the stream and doesn't show anything.

  


  The command I use :

  


  ffmpeg -f gdigrab -s 1920x1080 -i desktop -preset ultrafast -vcodec libx264 -tune zerolatency -b 900k -f rtp rtp://localhost:1234


  


  The network URL I put in VLC :

  


  udp://localhost:1234


  


  What am I doing wrong ?

  


• ffmpeg VBR -> CBR conversion and streaming of MPEG-2 TS video files

  26 juillet 2017, par Georgе Stoyanov

  I am trying to convert a source VBR SPTS MPEG-2 TS file into CBR using ffmpeg. The code I am using is the following :

  #!/bin/bash
  
  
  
  pkill ffmpeg
  
  
  
  ffmpeg \
  
          -re -i source.ts -c copy \
  
          -muxrate 18000K \
  
          -f mpegts \
  
          udp://destination_ip:1234?pkt_size=1316

  The source VPID bitrate is 10Mbps and the APID is 296Kbps. So according to my understanding this code should deliver 18Mbps CBR where the difference between the muxrate and the bitrate of all the PIDs is filled with null packets.

  The problem is that the output is far from perfect. The overall bitrate is semi-CBR at best. It ranges between 12Mbps and 15Mbps and I see a lot of PCR accuracy and PCR repetition errors along with CC errors both on the VPID and APID.