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• How to put the output of ffmpeg into a pipe in Python ? [duplicate]

  16 février 2023, par Eric Palmer

  I'm trying to use python to feed the results of ffmpeg into a pipeline, and then I can use this pipeline for subsequent operations (such as rtmp streaming). I've written the correct command, but I don't know how to accomplish this with Python.

  


  I wrote the following code in the Shell, it can run correctly.

  


  ffmpeg -re -i '2023-02-16_21:02:50.mp4' -f mpegts -c:v copy -c:a aac -vbsf h264_mp4toannexb pipe:1.ts | cat >> push


  


  When I'm trying to do the above in Python, I'm getting an error.

  


  cat: '>>': No such file or directory


  


  Here is my python code.

  


  command = [
    'docker',
    'run',
    '-v',
    f'{cwd}:{cwd}',
    '-w',
    f'{cwd}',
    'jrottenberg/ffmpeg',
    '-re',
    '-i', f'{video_path}',
    '-f', 'mpegts',
    '-c:v', 'copy',
    '-c:a', 'aac',
    '-vbsf', 'h264_mp4toannexb',
    'pipe:1.ts',
]

pa = subprocess.Popen(
    command,
    stdout = subprocess.PIPE,
    stderr = error_file
)

command = [
    'cat',
    '>>',
    f'{pipe_name}'
]

with pa.stdout:
    pb = subprocess.Popen(
        command,
        stdin = pa.stdout,
        stdout = error_file,
        stderr = error_file
    )


  


• doc/html : support texinfo 7.0

  8 novembre 2023, par Frank Plowman

  doc/html : support texinfo 7.0
  Resolves trac ticket #10636 (http://trac.ffmpeg.org/ticket/10636).
  Texinfo 7.0, released in November 2022, changed the names of various
  
  functions. Compiling docs with Texinfo 7.0 resulted in warnings and
  
  improperly formatted documentation. More old names appear to have
  
  been removed in Texinfo 7.1, released October 2023, which causes docs
  
  compilation to fail.
  This commit addresses the issue by adding logic to switch between the old
  
  and new function names depending on the Texinfo version. Texinfo 6.8
  
  produces identical documentation before and after the patch.
  CC
  
  https://www.mail-archive.com/debian-bugs-dist@lists.debian.org/msg1938238.html
  
  https://bugs.gentoo.org/916104
  Signed-off-by : Frank Plowman <post@frankplowman.com>
  

  • [DH] doc/t2h.pm

• FFMPEG to command not working as i intend [closed]

  11 mai 2023, par KillerHaseTV

  I want to cut my video by using timestamps. I have a txt file with my timestamps and I put them in the correct variables. For example, $startzeit = 00:00:01 and $endzeit = 00:00:10. So, I want :01 -> :10 and not :01 and run for 10 seconds until :11.

  


  The problem has something to do with "-to" because the timestamps are correct.

  


  Here is my code

  


  $segment = 0
$pathtxt = "D:\Streamshit\Stream\Videos schneiden\timestamps.txt"
$pathvideo = "D:\Streamshit\Stream\Videos schneiden\2023-05-04_18-59-45.mkv"
$zeile = (Get-Content -LiteralPath $pathtxt).Length
$segment_list = @(Get-Content -LiteralPath $Pathtxt)

while($segment -lt $zeile){

    $timestamp = $segment_list[$segment].split(",")
    $startzeit = $timestamp[0]
    $endzeit = $timestamp[1]
    $TEST = "D:\Streamshit\Stream\Videos schneiden\Clips\video$segment.mp4"
    $segment++    
    ffmpeg -ss $startzeit -i $pathvideo -to $endzeit -c copy $TEST 
}


  


  and here are my timestamps :

  


  00:00:01,00:00:10
00:00:24,00:00:41
00:01:29,00:01:42
00:02:19,00:02:46
00:04:11,00:04:58
00:08:38,00:08:42
00:10:05,00:10:14
00:12:07,00:14:47
00:16:59,00:17:20
00:26:31,00:27:00
00:34:36,00:36:56
00:39:01,00:39:21
00:46:32,00:46:53
00:48:00,00:48:58
00:51:11,00:52:01
00:56:15,00:57:52
00:59:20,01:01:20
01:03:21,01:03:40
01:12:02,01:12:17
01:14:48,01:14:59
01:15:13,01:19:03
01:19:14,01:19:23
01:23:49,01:24:06
01:24:23,01:24:50
01:25:13,01:26:10
01:26:45,01:26:56
01:29:08,01:29:29
01:31:54,01:32:10
01:36:32,01:37:41
01:39:37,01:39:53
01:55:30,01:56:02
02:13:07,02:13:44
03:12:19,03:12:50


  


  I already tried it with just -t which is normally doing what my code is doing and -to should do what I want, but it doesn't.