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• subprocess call of ffmpeg returns negative value

  11 juin 2019, par Zak44

  Here is the original command line call that works at shell :

  ffmpeg -i /Users/abc/Desktop/Test/Full_Mov.mov -vf "drawtext=fontfile=/System/Library/Fonts/Keyboard.ttf: text='SCENE BLAH BLAH - %{frame_num}': start_number=1: x=(w-tw)/2: y=h-(2*lh): fontcolor=white: fontsize=20: box=1: boxcolor=black: boxborderw=5","format=yuv420p" -f segment -segment_frames 123 -reset_timestamps 1 -c:a copy -map 0 "/Users/abc/Desktop/Test/%03d_test40.mov"

  Getting a negative value when trying to run ffmpeg via subprocess, causing it to fail and not process. I’ve even tried dumbing down the call to just run ffmpeg by itself with no arguments, and it still returns a negative value.

  import subprocess
  
  ffmpeg = "/usr/local/bin/ffmpeg"
  
  source = "/Users/abc/Desktop/Test/Full_Mov.mov"
  
  destination = "/Users/abc/Desktop/Test/%03d_test40.mov"
  
  cmd = "%s -i %s -vf \"drawtext=fontfile=/System/Library/Fonts/Keyboard.ttf: text='SCENE BLAH BLAH - %%{frame_num}': start_number=1: x=(w-tw)/2: y=h-(2*lh): fontcolor=black: fontsize=20: box=1: boxcolor=white: boxborderw=5\",\"format=yuv420p\" -f segment -segment_frames 123 -reset_timestamps 1 -c:a copy -map 0 \"%s\"" % (ffmpeg, source, destination)
  
  log("ffmpeg cmd: %s" % cmd)
  
  log(subprocess.check_output(cmd, shell=True))

  When running full command :

  CalledProcessError: Command '/usr/local/bin/ffmpeg -i /Users/abc/Desktop/Full_Mov.mov -vf "drawtext=fontfile=/System/Library/Fonts/Keyboard.ttf: text='SCENE BLAH BLAH - %{frame_num}': start_number=1: x=(w-tw)/2: y=h-(2*lh): fontcolor=black: fontsize=20: box=1: boxcolor=white: boxborderw=5","format=yuv420p" -f segment -segment_frames 318 -reset_timestamps 1 -c:a copy -map 0 "/Users/abc/Desktop/Test/%03d.tmp.mov"' returned non-zero exit status -8
  
      raise CalledProcessError(retcode, cmd, output=output)

  When running just ffmpeg no arguments :

  CalledProcessError: Command '/usr/local/bin/ffmpeg' returned non-zero exit status 1
  
      raise CalledProcessError(retcode, cmd, output=output)

  Latest output with suggested changes below :

  subprocess.CalledProcessError: Command '['/usr/local/bin/ffmpeg', '-i', '/Users/szaharak/Desktop/Flix_Test/ep888_sq66_main_mov_2019_05_20_14_15.mov', '-vf', 'drawtext=fontfile=/System/Library/Fonts/Keyboard.ttf:', 'text=SCENE BLAH BLAH - %%{frame_num}:', 'start_number=1:', 'x=(w-tw)/2:', 'y=h-(2*lh):', 'fontcolor=black:', 'fontsize=20:', 'box=1:', 'boxcolor=white:', 'boxborderw=5', 'format=yuv420p', '-f', 'segment', '-segment_frames', '123', '-reset_timestamps', '1', '-c:a', 'copy', '-map', '0', '/Users/szaharak/Desktop/Flix_Test/%03d_test40.mov']' returned non-zero exit status 1
  
  
  
  [NULL @ 0x7f88c3012200] Unable to find a suitable output format for 'text=SCENE BLAH BLAH - %%{frame_num}:'
  
  text=SCENE BLAH BLAH - %%{frame_num}:: Invalid argument

  And here is latest...

      >>> rc = subprocess.check_call(cmd)
  
  ffmpeg version N-93891-ge1839283bc-tessus  https://evermeet.cx/ffmpeg/  Copyright (c) 2000-2019 the FFmpeg developers
  
    built with Apple LLVM version 10.0.1 (clang-1001.0.46.4)
  
    configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-version3 --pkg-config-flags=--static --disable-ffplay
  
  
  
    libavutil      56. 28.100 / 56. 28.100
  
    libavcodec     58. 52.102 / 58. 52.102
  
    libavformat    58. 27.103 / 58. 27.103
  
    libavdevice    58.  7.100 / 58.  7.100
  
    libavfilter     7. 53.101 /  7. 53.101
  
    libswscale      5.  4.101 /  5.  4.101
  
    libswresample   3.  4.100 /  3.  4.100
  
    libpostproc    55.  4.100 / 55.  4.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/szaharak/Desktop/Flix_Test/ep888_sq66_main_mov_2019_05_20_14_15.mov':
  
    Metadata:
  
      major_brand     : qt  
  
      minor_version   : 537199360
  
      compatible_brands: qt  
  
      creation_time   : 2019-05-14T17:58:24.000000Z
  
      com.apple.quicktime.player.movie.audio.gain: 1.000000
  
      com.apple.quicktime.player.movie.audio.treble: 0.000000
  
      com.apple.quicktime.player.movie.audio.bass: 0.000000
  
      com.apple.quicktime.player.movie.audio.balance: 0.000000
  
      com.apple.quicktime.player.movie.audio.pitchshift: 0.000000
  
      com.apple.quicktime.player.movie.audio.mute: 
  
      com.apple.quicktime.player.movie.visual.brightness: 0.000000
  
      com.apple.quicktime.player.movie.visual.color: 1.000000
  
      com.apple.quicktime.player.movie.visual.tint: 0.000000
  
      com.apple.quicktime.player.movie.visual.contrast: 1.000000
  
      com.apple.quicktime.player.version: 7.6.6 (7.6.6)
  
      com.apple.quicktime.version: 7.7.3 (2943.14) 0x7738000 (Mac OS X, 10.11.6, 15G22010)
  
    Duration: 00:01:12.67, start: 0.000000, bitrate: 23379 kb/s
  
      Stream #0:0(eng): Video: mjpeg (Baseline) (jpeg / 0x6765706A), yuvj422p(pc, bt470bg/unknown/unknown), 1280x720 [SAR 72:72 DAR 16:9], 21838 kb/s, 24 fps, 24 tbr, 24k tbn, 24k tbc (default)
  
      Metadata:
  
        creation_time   : 2019-05-14T17:58:24.000000Z
  
        handler_name    : Apple Video Media Handler
  
        encoder         : Photo - JPEG
  
      Stream #0:1(eng): Audio: pcm_s16be (twos / 0x736F7774), 48000 Hz, stereo, s16, 1536 kb/s (default)
  
      Metadata:
  
        creation_time   : 2019-05-14T17:58:24.000000Z
  
        handler_name    : Apple Sound Media Handler
  
  [NULL @ 0x7f8ddc8ce200] Unable to find a suitable output format for 'text=SCENE BLAH BLAH - %{frame_num}: start_number=1: x=(w-tw)/2: y=h-(2*lh): fontcolor=black: fontsize=20: box=1: boxcolor=white: boxborderw=5: format=yuv420p'
  
  text=SCENE BLAH BLAH - %{frame_num}: start_number=1: x=(w-tw)/2: y=h-(2*lh): fontcolor=black: fontsize=20: box=1: boxcolor=white: boxborderw=5: format=yuv420p: Invalid argument
  
  Traceback (most recent call last):
  
    File "<stdin>", line 1, in <module>
  
    File "/usr/local/Cellar/python@2/2.7.15_1/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 190, in check_call
  
      raise CalledProcessError(retcode, cmd)
  
  subprocess.CalledProcessError: Command '['/usr/local/bin/ffmpeg', '-i', '/Users/szaharak/Desktop/Flix_Test/ep888_sq66_main_mov_2019_05_20_14_15.mov', '-vf', 'drawtext=fontfile=/System/Library/Fonts/Keyboard.ttf:', 'text=SCENE BLAH BLAH - %{frame_num}: start_number=1: x=(w-tw)/2: y=h-(2*lh): fontcolor=black: fontsize=20: box=1: boxcolor=white: boxborderw=5: format=yuv420p', '-f', 'segment', '-segment_frames', '123', '-reset_timestamps', '1', '-c:a', 'copy', '-map', '0', '/Users/szaharak/Desktop/Flix_Test/%03d_test40.mov']' returned non-zero exit status 1
  
  </module></stdin>

• configure : Improve the check for the rsync —contimeout option

  24 janvier, par Martin Storsjö

  configure : Improve the check for the rsync —contimeout option
  Traditionally, macOS has shipped an old version of rsync that lacked
  
  support for this option, hence this check (added in
  
  a8b3f0c5cf548f654e30c981988bb71981a3f8d3).
  However, in macOS 15.x, Apple have switched to providing rsync as a
  
  different tool, openrsync. The version of openrsync in at least
  
  macOS 15.2 does include "[—contimeout]" (note the lack of "=" after
  
  the option), in the output of "rsync —help", but when used, the tool
  
  errors out with "rsync : —contimeout=60 : unknown option". So apparently
  
  the tool erroenously lists the option as supported, while it really
  
  isn't.
  The original rsync tool (with a new enough version) prints
  
  "—contimeout=SECONDS" in the output of "rsync —help".
  It is unclear which version of openrsync Apple are shipping ; the latest
  
  upstream openrsync from OpenBSD does support the option and includes
  
  "[—contimeout=seconds]" in the output of "—help", and older versions
  
  don't seem to include the option as listed at all.
  Therefore, check for "—conntimeout=" with the "=", this should
  
  properly detect both new enough rsync and openrsync.
  This fixes running "fate-rsync" on macOS 15.x.
  Signed-off-by : Martin Storsjö <martin@martin.st>
  

  • [DH] configure

• How do I encode streamable video in iOS ?

  26 janvier 2017, par DAB

  How can I encode such a stream from the phone’s camera ? Ultimately I would like to capture this on a server for recorded playback/streaming.

  I know there are a lot of similar threads with hacky answers, but I’m looking for a better solution or even an understanding of the difference in formats.

  I see a lot of articles with custom solutions like ffmpeg wrappers, but from what I understand those are CPU heavy. There are a lot of video conferencing apps - are they all using custom encoding solutions ? Did apple really leave this out ?