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Video d’abeille en portrait
14 mai 2011, par
Mis à jour : Février 2012
Langue : français
Type : Video
Autres articles (98)
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MediaSPIP 0.1 Beta version
25 avril 2011, parMediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
The zip file provided here only contains the sources of MediaSPIP in its standalone version.
To get a working installation, you must manually install all-software dependencies on the server.
If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...) -
Multilang : améliorer l’interface pour les blocs multilingues
18 février 2011, parMultilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela. -
HTML5 audio and video support
13 avril 2011, parMediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
For older browsers the Flowplayer flash fallback is used.
MediaSPIP allows for media playback on major mobile platforms with the above (...)
Sur d’autres sites (7852)
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FFmpeg weird codec id for wav_pcm
1er février 2021, par phongelegobSo, I want to convert a lot of 32 bit .wav files into 24 bit .wav ones because i want to import them into Omnisphere, a virtual synth. I tried to convert them all with FFmpeg but Omnisphere doesn't support them. I then tested some things and Omnisphere seems to support the audio exported from Edison, which is FL Studio audio editing and recording tool. As I don't want to export them all individually, i wanted to know if there's any way to fix this in FFmpeg or in another audio converter. Here are the test files and what they output in MediaInfo : https://www.mediafire.com/file/l6lojwswsaq9fly/audiotest+wav.zip/file
32 bit original file :


General
Complete name : /home/user/Documents/audiotest wav/32bit.wav
Format : Wave
File size : 905 KiB
Duration : 2 s 625 ms
Overall bit rate mode : Constant
Overall bit rate : 2 823 kb/s
Writing application : Edison
Comment : Recorded on 1/26/2020 in Edison.

Audio
Format : PCM
Format profile : Float
Codec ID : 3
Codec ID/Hint : IEEE 
Duration : 2 s 625 ms
Bit rate mode : Constant
Bit rate : 2 822 kb/s
Channel(s) : 2 channels
Sampling rate : 44.1 kHz
Bit depth : 32 bits
Stream size : 904 KiB (100%)



24 bit file exported from Edison :


General
Complete name : /home/user/Documents/audiotest wav/edison.wav
Format : Wave
File size : 679 KiB
Duration : 2 s 625 ms
Overall bit rate mode : Constant
Overall bit rate : 2 118 kb/s
Writing application : Edison
Comment : Recorded on 1/26/2020 in Edison.

Audio
Format : PCM
Format settings : Little / Signed
Codec ID : 1
Duration : 2 s 625 ms
Bit rate mode : Constant
Bit rate : 2 117 kb/s
Channel(s) : 2 channels
Sampling rate : 44.1 kHz
Bit depth : 24 bits
Stream size : 678 KiB (100%)



24 bit file converted with FFmpeg :


General
Complete name : /home/user/Documents/audiotest wav/ffmpeg.wav
Format : Wave
File size : 679 KiB
Duration : 2 s 625 ms
Overall bit rate mode : Constant
Overall bit rate : 2 117 kb/s
Writing application : Lavf58.50.100
Comment : Recorded on 1/26/2020 in Edison.

Audio
Format : PCM
Format settings : Little / Signed
Codec ID : 00000001-0000-0010-8000-00AA00389B71
Duration : 2 s 625 ms
Bit rate mode : Constant
Bit rate : 2 117 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 44.1 kHz
Bit depth : 24 bits
Stream size : 678 KiB (100%)



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How to do multiple input with streamio-ffmpeg ?
12 août 2020, par YozuuI would like to recreate this ffmpeg line (which works well) in my rails app :


ffmpeg -i 1.mp4 -i 2.mp4 -filter_complex '[0] [1] afir=dry=10:wet=10' output.wav



So here is my config :


module EncodingConstants
 PROCESSED_DEFAULTS = {
 resolution: '500x400',
 video_codec: 'libx264',
 constant_rate_factor: '30',
 frame_rate: '25',
 audio_codec: 'aac',
 audio_bitrate: '128k',
 audio_sample_rate: '48000',
 progress: :processing_progress
 }.freeze

 AUDIO_EFFECTS = {
 multi_effect: %w[-i /home/yozuu/2.mp4 -filter_complex [0] [1] afir=dry=10:wet=10]
 }.freeze



So Sidekiq send this back to me :


I, [2020-08-12T19:40:38.828081 #2142] INFO -- : Running transcoding...
["/sbin/ffmpeg", "-y", "-i", "/home/yozuu/labo/video-project/tmp/1597254011-2142-0001-8820/1.mp4", "-vcodec", "libx264", "-acodec", "aac", "-s", "500x282", "-i", "/home/yozuu/2.mp4", "-filter_complex", "'[0]", "[1]", "afir=dry=10:wet=10'", "-r", "25", "-b:a", "128k", "-ar", "48000", "-aspect", "1.7730496453900708", "/home/yozuu/labo/video-project/tmp/1597254011-2142-0001-8820/1.mp4"]

E, [2020-08-12T19:40:38.897575 #2142] ERROR -- : Failed encoding...
["/sbin/ffmpeg", "-y", "-i", "/home/yozuu/labo/video-project/tmp/1597254011-2142-0001-8820/1.mp4", "-vcodec", "libx264", "-acodec", "aac", "-s", "500x282", "-i", "/home/yozuu/2.mp4", "-filter_complex", "'[0]", "[1]", "afir=dry=10:wet=10'", "-r", "25", "-b:a", "128k", "-ar", "48000", "-aspect", "1.7730496453900708", "/home/yozuu/labo/video-project/tmp/1597254011-2142-0001-8820/1.mp4"]


.....

Unknown decoder 'libx264'

Errors: no output file created. 




I don't understand why because for me the command line ffmpeg seems correct.
Anyone have a idea ?
Thank you.


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Can't list input devices ffmpeg linux
23 juillet 2021, par spindi598On windows I could do something like this to list input devices :


ffmpeg -list_devices true -f dshow -i dummy



On Linux I try doing something like this :


ffmpeg -list_devices true -f <x11grab></x11grab>avfoundation>



And I get an error (I have also tried the latest git build from here) :


ffmpeg version n4.2.4 Copyright (c) 2000-2020 the FFmpeg developers
 built with gcc 10.1.0 (GCC)
 configuration: --prefix=/usr --disable-debug --disable-static --disable-stripping --enable-avisynth --enable-fontconfig --enable-gmp --enable-gnutls --enable-gpl --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libdrm --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libiec61883 --enable-libjack --enable-libmfx --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libv4l2 --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxml2 --enable-libxvid --enable-nvdec --enable-nvenc --enable-omx --enable-shared --enable-version3
 libavutil 56. 31.100 / 56. 31.100
 libavcodec 58. 54.100 / 58. 54.100
 libavformat 58. 29.100 / 58. 29.100
 libavdevice 58. 8.100 / 58. 8.100
 libavfilter 7. 57.100 / 7. 57.100
 libswscale 5. 5.100 / 5. 5.100
 libswresample 3. 5.100 / 3. 5.100
 libpostproc 55. 5.100 / 55. 5.100
Unrecognized option 'list_devices'.
Error splitting the argument list: Option not found



How can I list my input devices ?