Recherche avancée

Sur d’autres sites (6923)

• openRTSP TCP 100% Cpu

  25 avril 2014, par user1199722

  First thanks for the great work for live media group.
  I am currently facing a problem with OpenRTSP utilizing cpu 100%.
  I am using the following commands to stream from remote ipcamera through internet. It works fine with local cameras.
  But when I try to stream from Internet IP camera (720p), At random times openRTSP start uses 100% cpu and stops output of streaming. The process is not exiting it stay with 100% cpu.

  I have observed that stream stops with a series of "c9c99c999......."
  I am using TCP streaming of rtsp.
  Please find the command that i am using.

  openRTSP -d 60 -v -t -c -b 800000 | /bin/ffmpeg -r 15 -i - -codec copy -hls_list_size 65535 -hls_time 5

  Please provide your suggestions regarding the problem
  Waiting for your valuable pointers.

• Merging video in a specific order using ffmpeg

  22 septembre 2020, par Terry

  I use the following to merge video in numeric order.

  


  for f in *; do mv "$f" "${f: -17}"; done &&. find *.ts|. sed 's:\:\ :g'| sed 's/^/file /' > fraglist.txt && ffmpeg -f concat -safe 0 -i fraglist.txt -c copy  output.ts; rm fraglist.txt

  


  This works great for files named like the following...
  
000001

  000002

  000003

  000004

  000005

  000006

  000007

  000008

  000009

  000010

  


  But If I need something like the following merged the order is based on how many digits there are in the file name...

  


  1708.ts
  9803.ts
  13798.ts
  17815.ts
  21804.ts
  25819.ts
  
29832.ts

  


  What command could I use to get the second group of files merged in that order ? Thank you for your help !

  


• Unexpected result from Python re.search for command line output

  23 mai 2020, par Fernando Ortega

  I'm using subprocess.Popen to run an ffmpeg command (in Windows) and then extract the part of the output that has the frame count with a regex expression using re.search. Sometimes, not always, I get the wrong result from search even if the printed command output string clearly shows what I expect.

  



  When I use re.findall I get 2 results, the "wrong" one and the expected one, but in the output string of the command I still only see one option. I'd like to understand why this is happening.

  



  Here's the code I'm running :

  



  import re
import subprocess

# path to video with 300 frames
cmd = r'ffmpeg -i C:\...\300frames_HUD.avi -map 0:v:0 -c copy -f null -'
p = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
output_info = p.communicate()[0]

regex = r'(frame=\s*)([0-9]+)'
search_result = re.search(regex, output_info)
findall_result = re.findall(regex, output_info)
print "SEARCH"
print '0', search_result.group(0)
print '1', search_result.group(1)
print '2', search_result.group(2)

print "FIND ALL"
print findall_result


  



  Here are the results I get :

  



  SEARCH
0 frame=  293
1 frame=  
2 293
FIND ALL
[('frame=  ', '293'), ('frame=  ', '300')]


  



  And here is the printed output_info, the ffmpeg command output I'm searching on :

  



  ffmpeg version git-2020-03-15-c467328 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 9.2.1 (GCC) 20200122
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-ffnvcodec --enable-cuda-llvm --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
  libavutil      56. 42.100 / 56. 42.100
  libavcodec     58. 75.100 / 58. 75.100
  libavformat    58. 41.100 / 58. 41.100
  libavdevice    58.  9.103 / 58.  9.103
  libavfilter     7. 77.100 /  7. 77.100
  libswscale      5.  6.101 /  5.  6.101
  libswresample   3.  6.100 /  3.  6.100
  libpostproc    55.  6.100 / 55.  6.100
Input #0, avi, from 'C:\...\300frames_HUD.avi':
  Duration: 00:00:10.00, start: 0.000000, bitrate: 373255 kb/s
    Stream #0:0: Video: rawvideo, bgr24, 960x540, 374496 kb/s, 30 fps, 30 tbr, 30 tbn, 30 tbc
    Metadata:
      title           : V
Output #0, null, to 'pipe:':
  Metadata:
    encoder         : Lavf58.41.100
    Stream #0:0: Video: rawvideo, bgr24, 960x540, q=2-31, 374496 kb/s, 30 fps, 30 tbr, 30 tbn, 30 tbc
    Metadata:
      title           : V
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
frame=  300 fps=0.0 q=-1.0 Lsize=N/A time=00:00:10.00 bitrate=N/A speed=19.4x    
video:455625kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown


  



  I'm essentially looking for the 300 number in frame=  300.
I can reproduce this easily when I execute it inside my IDE (pycharm) twice in a row quickly.