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• How can I resolve the FileNotFoundError when attempting to convert an MP3 to WAV using ffmpeg in Python ?

  3 juin 2023, par avocado123123

  I have an MP3 file that I want to convert into a WAV file, but no matter how I try writing the code, it keeps raising FileNotFoundError on the MP3 file and warns me about the installation of FFmpeg.

  


  my code :

  


  from pydub import AudioSegment

# Specify the path to the FFmpeg executable
ffmpeg_path = r"C:\Users\תמרה\AppData\Local\ffmpegio\ffmpeg-downloader\ffmpeg\bin\ffmpeg.exe"
AudioSegment.ffmpeg = ffmpeg_path
AudioSegment.ffprobe = ffmpeg_path

# Load the MP3 file
mp3_file = r"C:\Users\תמרה\Tea Time - Ofshane.mp3"
audio = AudioSegment.from_file(mp3_file, format="mp3")

# Export as WAV
wav_file = r"C:\Users\תמרה\Tea Time - Ofshane.wav"
audio.export(wav_file, format="wav")


  


  when running :

  


  C:\Users\תמרה\PycharmProjects\spotify\venv\Scripts\python.exe "C:\Users\תמרה\PycharmProjects\spotify\file stuff.py" C:\ffmpeg-2023-05-29-git-45fa85a777-full_build\bin\ffmpeg.exe &#xA;C:\Users\תמרה\PycharmProjects\spotify\venv\lib\site-packages\pydub\utils.py:170: RuntimeWarning: Couldn&#x27;t find ffmpeg or avconv - defaulting to ffmpeg, but may not work&#xA;  warn("Couldn&#x27;t find ffmpeg or avconv - defaulting to ffmpeg, but may not work", RuntimeWarning)&#xA;C:\Users\תמרה\PycharmProjects\spotify\venv\lib\site-packages\pydub\utils.py:198: RuntimeWarning: Couldn&#x27;t find ffprobe or avprobe - defaulting to ffprobe, but may not work&#xA;  warn("Couldn&#x27;t find ffprobe or avprobe - defaulting to ffprobe, but may not work", RuntimeWarning)&#xA;Traceback (most recent call last):&#xA;  File "C:\Users\תמרה\PycharmProjects\spotify\file stuff.py", line 12, in <module>&#xA;    audio = AudioSegment.from_file(mp3_file, format="mp3")&#xA;  File "C:\Users\תמרה\PycharmProjects\spotify\venv\lib\site-packages\pydub\audio_segment.py", line 728, in from_file&#xA;    info = mediainfo_json(orig_file, read_ahead_limit=read_ahead_limit)&#xA;  File "C:\Users\תמרה\PycharmProjects\spotify\venv\lib\site-packages\pydub\utils.py", line 274, in mediainfo_json&#xA;    res = Popen(command, stdin=stdin_parameter, stdout=PIPE, stderr=PIPE)&#xA;  File "C:\Users\תמרה\AppData\Local\Programs\Python\Python310\lib\subprocess.py", line 971, in __init__&#xA;True&#xA;    self._execute_child(args, executable, preexec_fn, close_fds,&#xA;  File "C:\Users\תמרה\AppData\Local\Programs\Python\Python310\lib\subprocess.py", line 1440, in _execute_child&#xA;    hp, ht, pid, tid = _winapi.CreateProcess(executable, args,&#xA;FileNotFoundError: [WinError 2] The system cannot find the file specified&#xA;&#xA;Process finished with exit code 1&#xA;&#xA;</module>

  


  What should I do to make this work ?

  


• Capture video with pulse audio on a second camera with motioneye [closed]

  8 mai 2023, par Damien JALLON

  On a raspberrypi 4, bullseye os, motioneye service capture motion with camera on /dev/video0 and launch this script that capture video with pulse audio on a second camera on /dev/video2 :

  


  echo $USER >> /home/damien/motion_ffmpeg.log
cd /home/damien
source /home/damien/.profile
source /home/damien/.bashrc
file="/home/damien/Vidéos/motionEye/motionEye_$(date +%Y%m%d_%H%M%S).mp4" # Création d'un nom de fichier horodaté
/usr/bin/ffmpeg -f pulse -thread_queue_size 4096 -ac 1 -channel_layout mono -i default -f v4l2 -thread_queue_size 4096 -i /dev/video2 -t 00:00:03 -vcodec mpeg4 $file >> /home/damien/motion_ffmpeg.log  2>&1 < /dev/null & 


  


  The script work perfectly in standalone, in a terminal connected with the user "damien".
The log produce in standalone :

  


  


  damien ffmpeg version 4.3.6-0+deb11u1+rpt1 Copyright (c) 2000-2023 the
FFmpeg developers built with gcc 10 (Debian 10.2.1-6)
  
configuration : —prefix=/usr —extra-version=0+deb11u1+rpt1
—toolchain=hardened —incdir=/usr/include/aarch64-linux-gnu —enable-gpl —disable-stripping —enable-avresample —disable-filter=resample —enable-gnutls —enable-ladspa —enable-libaom —enable-libass —enable-libbluray —enable-libbs2b —enable-libcaca —enable-libcdio —enable-libcodec2 —enable-libdav1d —enable-libflite —enable-libfontconfig —enable-libfreetype —enable-libfribidi —enable-libgme —enable-libgsm —enable-libjack —enable-libmp3lame —enable-libmysofa —enable-libopenjpeg —enable-libopenmpt —enable-libopus —enable-libpulse —enable-librabbitmq —enable-librsvg —enable-librubberband —enable-libshine —enable-libsnappy —enable-libsoxr —enable-libspeex —enable-libsrt —enable-libssh —enable-libtheora —enable-libtwolame —enable-libvidstab —enable-libvorbis —enable-libvpx —enable-libwavpack —enable-libwebp —enable-libx265 —enable-libxml2 —enable-libxvid —enable-libzmq —enable-libzvbi —enable-lv2 —enable-omx —enable-openal —enable-opencl —enable-opengl —enable-sdl2 —disable-mmal —enable-neon —enable-v4l2-request —enable-libudev —enable-epoxy —enable-sand —libdir=/usr/lib/aarch64-linux-gnu —arch=arm64 —enable-pocketsphinx —enable-libdc1394 —enable-libdrm —enable-vout-drm —enable-libiec61883 —enable-chromaprint —enable-frei0r —enable-libx264 —enable-shared
  
libavutil 56. 51.100 / 56. 51.100 libavcodec 58. 91.100 / 58. 91.100 libavformat 58. 45.100 / 58. 45.100 libavdevice 58. 10.100 / 58. 10.100 libavfilter 7. 85.100 / 7. 85.100 libavresample 4. 0. 0 /
4. 0. 0 libswscale 5. 7.100 / 5. 7.100 libswresample 3. 7.100 / 3. 7.100 libpostproc 55. 7.100 / 55. 7.100
Input #0, pulse, from 'default' :
Duration : N/A, start : 1683539947.001243, bitrate : 768 kb/s
Stream #0:0 : Audio : pcm_s16le, 48000 Hz, mono, s16, 768 kb/s Input #1, video4linux2,v4l2, from '/dev/video2' : Duration : N/A, start : 675.690589, bitrate : 147456 kb/s
Stream #1:0 : Video : rawvideo (YUY2 / 0x32595559), yuyv422, 640x480, 147456 kb/s, 30 fps, 30 tbr, 1000k tbn, 1000k tbc Stream
mapping : Stream #1:0 -> #0:0 (rawvideo (native) -> mpeg4 (native))
  
Stream #0:0 -> #0:1 (pcm_s16le (native) -> aac (native)) Press [q] to
stop, [?] for help Output #0, mp4, to
'/home/damien/Vidéos/motionEye/motionEye_20230508_115906.mp4' :
  
Metadata :
encoder : Lavf58.45.100
Stream #0:0 : Video : mpeg4 (mp4v / 0x7634706D), yuv420p(progressive), 640x480, q=2-31, 200 kb/s, 30 fps, 15360 tbn, 30
tbc
Metadata :
encoder : Lavc58.91.100 mpeg4
Side data :
cpb : bitrate max/min/avg : 0/0/200000 buffer size : 0 vbv_delay : N/A
Stream #0:1 : Audio : aac (LC) (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 69 kb/s
Metadata :
encoder : Lavc58.91.100 aac frame= 90 fps= 67 q=4.6 Lsize= 275kB time=00:00:03.00 bitrate= 750.5kbits/s dup=51 drop=0
speed=2.23x video:245kB audio:26kB subtitle:0kB other streams:0kB
global headers:0kB muxing overhead : 1.611457% [aac @ 0x55b808d2b0]
Qavg : 126.380

  


  


  The motioneye service is launched under the user "damien".
The log of the script executed by motioneye when motion is detected :

  


  


  damien ffmpeg version 4.3.6-0+deb11u1+rpt1 Copyright (c) 2000-2023 the
FFmpeg developers built with gcc 10 (Debian 10.2.1-6)
  
configuration : —prefix=/usr —extra-version=0+deb11u1+rpt1
—toolchain=hardened —incdir=/usr/include/aarch64-linux-gnu —enable-gpl —disable-stripping —enable-avresample —disable-filter=resample —enable-gnutls —enable-ladspa —enable-libaom —enable-libass —enable-libbluray —enable-libbs2b —enable-libcaca —enable-libcdio —enable-libcodec2 —enable-libdav1d —enable-libflite —enable-libfontconfig —enable-libfreetype —enable-libfribidi —enable-libgme —enable-libgsm —enable-libjack —enable-libmp3lame —enable-libmysofa —enable-libopenjpeg —enable-libopenmpt —enable-libopus —enable-libpulse —enable-librabbitmq —enable-librsvg —enable-librubberband —enable-libshine —enable-libsnappy —enable-libsoxr —enable-libspeex —enable-libsrt —enable-libssh —enable-libtheora —enable-libtwolame —enable-libvidstab —enable-libvorbis —enable-libvpx —enable-libwavpack —enable-libwebp —enable-libx265 —enable-libxml2 —enable-libxvid —enable-libzmq —enable-libzvbi —enable-lv2 —enable-omx —enable-openal —enable-opencl —enable-opengl —enable-sdl2 —disable-mmal —enable-neon —enable-v4l2-request —enable-libudev —enable-epoxy —enable-sand —libdir=/usr/lib/aarch64-linux-gnu —arch=arm64 —enable-pocketsphinx —enable-libdc1394 —enable-libdrm —enable-vout-drm —enable-libiec61883 —enable-chromaprint —enable-frei0r —enable-libx264 —enable-shared
  
libavutil 56. 51.100 / 56. 51.100 libavcodec 58. 91.100 / 58. 91.100 libavformat 58. 45.100 / 58. 45.100 libavdevice 58. 10.100 / 58. 10.100 libavfilter 7. 85.100 / 7. 85.100 libavresample 4. 0. 0 /
4. 0. 0 libswscale 5. 7.100 / 5. 7.100 libswresample 3. 7.100 / 3. 7.100 libpostproc 55. 7.100 / 55. 7.100
default : No such process

  


  


  The message "default : No such process" seems to mean that there is no connection with the pulse server.

  


  Why does ffmpeg not connect to pulse server when launched by motioneye ?

  


• How to config FFmpeg for xrgb and Aver Media capture card [closed]

  12 mai 2023, par Plotter Desalor

  I'm trying to use FFmpeg through ffplay to display a capture card output as lossless as possible.

  


  My capture card is named "Live Gamer Ultra-Video"

  


  In OBS, the NV12, YV12, P010 and YUY2 lead to blurriness around text and fine pixels edges, but the XRGB one offer clear output. So I've tried to focus on this mode with FFmpeg as the default one lead to same blurriness seen in OBS.

  


  Running "ffmpeg -f dshow -list_options true -i video="Live Gamer Ultra-Video" show me this result
(i've only kept line with wanted resolution)

  


  ffmpeg version 6.0-essentials_build-www.gyan.dev Copyright (c) 2000-2023 the FFmpeg developers
  built with gcc 12.2.0 (Rev10, Built by MSYS2 project)
  configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-zlib --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-sdl2 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-libfreetype --enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libvpl --enable-libgme --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libtheora --enable-libvo-amrwbenc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-librubberband
  libavutil      58.  2.100 / 58.  2.100
  libavcodec     60.  3.100 / 60.  3.100
  libavformat    60.  3.100 / 60.  3.100
  libavdevice    60.  1.100 / 60.  1.100
  libavfilter     9.  3.100 /  9.  3.100
  libswscale      7.  1.100 /  7.  1.100
  libswresample   4. 10.100 /  4. 10.100
  libpostproc    57.  1.100 / 57.  1.100
[dshow @ 00000240bf0eac40] DirectShow video device options (from video devices)
[dshow @ 00000240bf0eac40]  Pin "Capturer" (alternative pin name "0")
[dshow @ 00000240bf0eac40]   pixel_format=yuyv422  min s=2560x1440 fps=30 max s=2560x1440 fps=50
[dshow @ 00000240bf0eac40]   pixel_format=yuyv422  min s=2560x1440 fps=30 max s=2560x1440 fps=50 (tv, bt709/bt709/unknown, topleft)
[dshow @ 00000240bf0eac40]   pixel_format=yuv420p  min s=2560x1440 fps=30 max s=2560x1440 fps=60.0002
[dshow @ 00000240bf0eac40]   pixel_format=yuv420p  min s=2560x1440 fps=30 max s=2560x1440 fps=60.0002 (tv, bt709/bt709/unknown, topleft)
[dshow @ 00000240bf0eac40]   pixel_format=nv12  min s=2560x1440 fps=30 max s=2560x1440 fps=60.0002
[dshow @ 00000240bf0eac40]   pixel_format=nv12  min s=2560x1440 fps=30 max s=2560x1440 fps=60.0002 (tv, bt709/bt709/unknown, topleft)
[dshow @ 00000240bf0eac40]   unknown compression type 0xE436EB7D  min s=2560x1440 fps=30 max s=2560x1440 fps=30
[dshow @ 00000240bf0eac40]   unknown compression type 0xE436EB7D  min s=2560x1440 fps=30 max s=2560x1440 fps=30 (tv, bt709/bt709/unknown, topleft)
[dshow @ 00000240bf0eac40]   unknown compression type 0x30313050  min s=2560x1440 fps=30 max s=2560x1440 fps=30
[dshow @ 00000240bf0eac40]   unknown compression type 0x30313050  min s=2560x1440 fps=30 max s=2560x1440 fps=30 (tv, bt709/bt709/unknown, topleft)

video=Live Gamer Ultra-Video: Immediate exit requested


  


  "unknown compression type 0xE436EB7D" is a pretty bad start but from https://trac.ffmpeg.org/ticket/6279 I could figured out it was just unproperly parsed RGB24 format

  


  But if I run a very simple "ffplay -f dshow -i video="Live Gamer Ultra-Video" -pixel_format rgb24"
I got this output

  


  ffplay version 6.0-essentials_build-www.gyan.dev Copyright (c) 2003-2023 the FFmpeg developers
  built with gcc 12.2.0 (Rev10, Built by MSYS2 project)
  configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-zlib --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-sdl2 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-libfreetype --enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libvpl --enable-libgme --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libtheora --enable-libvo-amrwbenc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-librubberband
  libavutil      58.  2.100 / 58.  2.100
  libavcodec     60.  3.100 / 60.  3.100
  libavformat    60.  3.100 / 60.  3.100
  libavdevice    60.  1.100 / 60.  1.100
  libavfilter     9.  3.100 /  9.  3.100
  libswscale      7.  1.100 /  7.  1.100
  libswresample   4. 10.100 /  4. 10.100
  libpostproc    57.  1.100 / 57.  1.100
[dshow @ 000001ec3fa39300] Could not set video options   0B f=0/0
video=Live Gamer Ultra-Video: I/O error


  


  How could I use rgb format with this capture card ?

  


  If not possible, any other format leading to proper output would be ok too.
I've tried parameters from this topic Capture full-range/lossless rgb frame from capture card that supports NV12 and YUYV output without any good result sadly.