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Video d’abeille en portrait
14 mai 2011, par
Mis à jour : Février 2012
Langue : français
Type : Video
Autres articles (104)
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Use, discuss, criticize
13 avril 2011, parTalk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
A discussion list is available for all exchanges between users. -
Participer à sa traduction
10 avril 2011Vous pouvez nous aider à améliorer les locutions utilisées dans le logiciel ou à traduire celui-ci dans n’importe qu’elle nouvelle langue permettant sa diffusion à de nouvelles communautés linguistiques.
Pour ce faire, on utilise l’interface de traduction de SPIP où l’ensemble des modules de langue de MediaSPIP sont à disposition. ll vous suffit de vous inscrire sur la liste de discussion des traducteurs pour demander plus d’informations.
Actuellement MediaSPIP n’est disponible qu’en français et (...) -
MediaSPIP Player : problèmes potentiels
22 février 2011, parLe lecteur ne fonctionne pas sur Internet Explorer
Sur Internet Explorer (8 et 7 au moins), le plugin utilise le lecteur Flash flowplayer pour lire vidéos et son. Si le lecteur ne semble pas fonctionner, cela peut venir de la configuration du mod_deflate d’Apache.
Si dans la configuration de ce module Apache vous avez une ligne qui ressemble à la suivante, essayez de la supprimer ou de la commenter pour voir si le lecteur fonctionne correctement : /** * GeSHi (C) 2004 - 2007 Nigel McNie, (...)
Sur d’autres sites (11529)
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FFMpeg - can't manage to create DnxHR files in Rec2020 / 4:4:4 Chroma sampling
20 mai 2019, par ShouilleI’m trying to convert an image sequence into a Quicktime DnxHR with 4:4:4 sampling in Rec2020 colorspace using FFMpeg 4.1.3. But I’m always ending with 4:2:0 Rec709 file.
In my lastest attempt FFMpeg seems to de the right thing :
ffmpeg.exe -y -i "C:/TEST/final-%04d.dpx" -c:v dnxhd -vf "scale=3840:2160,fps=24,format=yuv444p12le" -profile:v dnxhr_444 -color_primaries 9 -colorspace 9 -color_range 2 C:/TEST/test.movDuring encoding the output stream is shown as 444 / bt2020
Output #0, mov, to 'C:/TEST/test.mov':
Metadata:
encoder : Lavf58.20.100
Stream #0:0: Video: dnxhd (DNXHR 444) (AVdh / 0x68645641), yuv444p10le(pc, bt2020nc/bt2020/unknown), 3840x2160, q=2-1024, 200 kb/s, 24 fps, 12288 tbn, 24 tbc
Metadata:
encoder : Lavc58.35.100 dnxhd
frame= 10 fps=3.3 q=1.0 Lsize= 71161kB time=00:00:00.37
bitrate=1554195.5kbits/s speed=0.122x
video:71160kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.001114%But when I inspect the output file FFMpeg says it’s in bt709
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:/TEST/test.mov':
Metadata:
major_brand : qt
minor_version : 512
compatible_brands: qt
encoder : Lavf58.20.100
Duration: 00:00:00.42, start: 0.000000, bitrate: 1397959 kb/s
Stream #0:0(eng): Video: dnxhd (DNXHR 444) (AVdh / 0x68645641),
yuv444p10le(pc, bt709/unknown/unknown), 3840x2160, 1399062 kb/s, 24 fps, 24 tbr, 12288 tbn, 12288 tbc (default)
Metadata:
handler_name : VideoHandler
encoder : Lavc58.35.100 dnxhdAnd softwares like MediaInfo say the chroma sampling is in 4.2.0
Any ideas ?
As ask in the comment, the full log of the conversion :
C:\Users\pierrech>ffmpeg.exe -y -i "C:/TEST/final-%04d.dpx" -c:v dnxhd -vf colorspace=all=bt2020:iall=bt2020 -profile:v dnxhr_444 -color_primaries bt2020 -colorspace bt2020_ncl -color_range 2 -color_trc bt2020_12bit C:/TEST/test.mov
ffmpeg version 4.1.3 Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 8.3.1 (GCC) 20190414
configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --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-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth
libavutil 56. 22.100 / 56. 22.100
libavcodec 58. 35.100 / 58. 35.100
libavformat 58. 20.100 / 58. 20.100
libavdevice 58. 5.100 / 58. 5.100
libavfilter 7. 40.101 / 7. 40.101
libswscale 5. 3.100 / 5. 3.100
libswresample 3. 3.100 / 3. 3.100
libpostproc 55. 3.100 / 55. 3.100
Input #0, image2, from 'C:/TEST/final-%04d.dpx':
Duration: 00:00:00.40, start: 0.000000, bitrate: N/A
Stream #0:0: Video: dpx, rgb48le, 3840x2160, 25 tbr, 25 tbn, 25 tbc
Stream mapping:
Stream #0:0 -> #0:0 (dpx (native) -> dnxhd (native))
Press [q] to stop, [?] for help
Output #0, mov, to 'C:/TEST/test.mov':
Metadata:
encoder : Lavf58.20.100
Stream #0:0: Video: dnxhd (DNXHR 444) (AVdh / 0x68645641), yuv444p10le(pc, bt2020nc/bt2020/bt2020-12), 3840x2160, q=2-1024, 200 kb/s, 25 fps, 12800 tbn, 25 tbc
Metadata:
encoder : Lavc58.35.100 dnxhd
frame= 10 fps=3.8 q=1.0 Lsize= 71161kB time=00:00:00.36 bitrate=1618952.6kbits/s speed=0.136x
video:71160kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.001114%And after the conversion
C:\Users\pierrech>ffmpeg.exe -i C:\TEST\test.mov -hide_banner
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\TEST\test.mov':
Metadata:
major_brand : qt
minor_version : 512
compatible_brands: qt
encoder : Lavf58.20.100
Duration: 00:00:00.40, start: 0.000000, bitrate: 1457373 kb/s
Stream #0:0(eng): Video: dnxhd (DNXHR 444) (AVdh / 0x68645641), yuv444p10le(pc, bt709/unknown/unknown), 3840x2160, 1457356 kb/s, 25 fps, 25 tbr, 12800 tbn, 12800 tbc (default)
Metadata:
handler_name : VideoHandler
encoder : Lavc58.35.100 dnxhd
At least one output file must be specified -
What is the best way to check if audio embedded in video is ambisonic ?
20 mai 2019, par GrzegorzWWe are making 360 video player for VR headsets using Unity. We are trying to achieve spatial audio. The easiest case is when video and audio are in separated files, but now we decided to support also videos with embedded audio. I need to know before i load video if audio is ambisonic or not. I’m looking for an easy way to decide if audio is ambisonic in order to separate it from video and convert to .tbe file, which is currently supported by our app.
I was trying to use ffmpeg :
$./ffmpeg.exe -i ~/Videos/video.mp4and got :
ffmpeg version 4.1.3 Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 8.3.1 (GCC) 20190414
configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --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-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth
libavutil 56. 22.100 / 56. 22.100
libavcodec 58. 35.100 / 58. 35.100
libavformat 58. 20.100 / 58. 20.100
libavdevice 58. 5.100 / 58. 5.100
libavfilter 7. 40.101 / 7. 40.101
libswscale 5. 3.100 / 5. 3.100
libswresample 3. 3.100 / 3. 3.100
libpostproc 55. 3.100 / 55. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:/Users/Medion/Videos/video.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.56.101
Duration: 00:11:39.40, start: 0.000000, bitrate: 17290 kb/s
Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 3840x2160 [SAR 1:1 DAR 16:9], 16497 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
Metadata:
handler_name : VideoHandler
Side data:
stereo3d: top and bottom
spherical: equirectangular (0.000000/0.000000/0.000000)
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, 4.0, fltp, 778 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream #0:2(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, 4.0, fltp, 4 kb/s
Metadata:
handler_name : SoundHandler
Stream #0:3(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 2 kb/s
Metadata:
handler_name : SoundHandler
At least one output file must be specifiedbut I don’t see any line that could indicate that audio is ambisonic. I see that there are 4 channels in streams #0:1 and #0:2, but I bet it’s not enough.
I’ve also tried MediaInfo but it’s the same thing :
General
CompleteName : C:\Users\Medion\Videos\video.mp4
Format/String : MPEG-4
Format_Profile : Base Media
CodecID/String : isom (isom/iso2/avc1/mp41)
FileSize/String : 1.41 GiB
Duration/String : 11 min 39 s
OverallBitRate_Mode/String : Variable
OverallBitRate/String : 17.3 Mb/s
Encoded_Application/String : Lavf57.56.101
Video
ID/String : 1
Format/String : AVC
Format/Info : Advanced Video Codec
Format_Profile : High@L5.2
Format_Settings : CABAC / 3 Ref Frames
Format_Settings_CABAC/String : Yes
Format_Settings_RefFrames/String : 3 frames
Format_Settings_GOP : M=3, N=29
CodecID : avc1
CodecID/Info : Advanced Video Coding
Duration/String : 11 min 39 s
BitRate_Mode/String : Variable
BitRate/String : 16.5 Mb/s
BitRate_Maximum/String : 20.0 Mb/s
Width/String : 3 840 pixels
Height/String : 2 160 pixels
DisplayAspectRatio/String : 16:9
FrameRate_Mode/String : Constant
FrameRate/String : 29.970 (30000/1001) FPS
Standard : NTSC
ColorSpace : YUV
ChromaSubsampling/String : 4:2:0
BitDepth/String : 8 bits
ScanType/String : Progressive
Bits-(Pixel*Frame) : 0.066
StreamSize/String : 1.34 GiB (95%)
Language/String : English
Tagged_Date : UTC 2017-06-13 17:37:51
colour_range : Limited
colour_primaries : BT.709
transfer_characteristics : BT.709
matrix_coefficients : BT.709
Codec configuration box : avcC
Audio #1
ID/String : 2
Format/String : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
CodecID : mp4a-40-2
Duration/String : 11 min 39 s
Source_Duration/String : 11 min 39 s
BitRate_Mode/String : Constant
BitRate/String : 779 kb/s
Channel(s)/String : 4 channels
ChannelLayout : C L R Cb
SamplingRate/String : 48.0 kHz
FrameRate/String : 46.875 FPS (1024 SPF)
Compression_Mode/String : Lossy
StreamSize/String : 64.9 MiB (5%)
Source_StreamSize/String : 64.9 MiB (5%)
Default/String : Yes
AlternateGroup/String : 1
Tagged_Date : UTC 2017-06-13 17:37:51
Audio #2
ID/String : 3
Format/String : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
CodecID : mp4a-40-2
Duration/String : 11 min 39 s
Source_Duration/String : 11 min 39 s
BitRate_Mode/String : Variable
BitRate/String : 4 900 b/s
BitRate_Maximum/String : 266 kb/s
Channel(s)/String : 4 channels
ChannelLayout : C L R Cb
SamplingRate/String : 48.0 kHz
FrameRate/String : 46.875 FPS (1024 SPF)
Compression_Mode/String : Lossy
StreamSize/String : 418 KiB (0%)
Source_StreamSize/String : 418 KiB (0%)
Default/String : No
AlternateGroup/String : 1
Tagged_Date : UTC 2017-06-13 17:37:51
Audio #3
ID/String : 4
Format/String : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
CodecID : mp4a-40-2
Duration/String : 11 min 39 s
Source_Duration/String : 11 min 39 s
BitRate_Mode/String : Variable
BitRate/String : 2 275 b/s
BitRate_Maximum/String : 128 kb/s
Channel(s)/String : 2 channels
ChannelLayout : L R
SamplingRate/String : 48.0 kHz
FrameRate/String : 46.875 FPS (1024 SPF)
Compression_Mode/String : Lossy
StreamSize/String : 194 KiB (0%)
Source_StreamSize/String : 194 KiB (0%)
Default/String : No
AlternateGroup/String : 1
Tagged_Date : UTC 2017-06-13 17:37:51I assume that I don’t know what to look for in those outputs.
Thanks in advance. -
PHP/FFmpeg can not save video
19 mai 2019, par tour travelThe error is :
[Sun May 19 11:41:03.158185 2019] [php7:error] [pid 32405] [client
85.133.232.4:35172] PHP Fatal error : Uncaught Alchemy\BinaryDriver\Exception\ExecutionFailureException : ffmpeg
failed to execute command ’/usr/bin/ffmpeg’ ’-y’ ’-i’ ’Sample.mp4’
’-async’ ’1’ ’-metadata:s:v:0’ ’start_time=0’ ’-f’ ’webm’ ’-vcodec’
’libvpx’ ’-acodec’ ’libvorbis’ ’-b:v’ ’1000k’ ’-refs’ ’6’ ’-coder’ ’1’
’-sc_threshold’ ’40’ ’-flags’ ’+loop’ ’-me_range’ ’16’ ’-subq’ ’7’
’-i_qfactor’ ’0.71’ ’-qcomp’ ’0.6’ ’-qdiff’ ’4’ ’-trellis’ ’1’ ’-b:a’
’128k’ ’-vf’ ’[in]scale=320:240 [out]’ ’export-webm.webm’ in
/vendor/alchemy/binary-driver/src/Alchemy/BinaryDriver/ProcessRunner.php:100\nStack
trace :\n#0
/vendor/alchemy/binary-driver/src/Alchemy/BinaryDriver/ProcessRunner.php(72) :
Alchemy\BinaryDriver\ProcessRunner->doExecutionFailure(’’/usr/bin/ffmpe...’)\n#1
/vendor/alchemy/binary-driver/src/Alchemy/BinaryDriver/AbstractBinary.php(209) :
Alchemy\BinaryDriver\ProcessRunner->run(Object(Symfony\Component\Process\Process),
Object(SplObjectStorage), false)\n#2
/vendor/alchemy/binary-driver/src/Alchemy/BinaryDriver/AbstractBinary.php(137) :
Alchemy\BinaryDr in
/vendor/php-ffmpeg/php-ffmpeg/src/FFMpeg/Media/AbstractVideo.php on
line 106aWhat I trying to do is, save video :
require '/vendor/autoload.php';
$ffmpeg = FFMpeg\FFMpeg::create();
$ffprobe = FFMpeg\FFProbe::create();
$video = $ffmpeg->open('Sample.mp4');
$video
->filters()
->resize(new FFMpeg\Coordinate\Dimension(320, 240))
->synchronize();
$video
->save(new FFMpeg\Format\Video\X264('aac'), 'export-x264.mp4')What I have done :
I searched and similar topics tell me to set permission to my files and folders, I set user and also set 755 to files and folders but still I have this error and no success, any idea ?
Errorlog :
Fatal error : Uncaught
Alchemy\BinaryDriver\Exception\ExecutionFailureException : ffmpeg
failed to execute command ’/usr/bin/ffmpeg’ ’-y’ ’-i’ ’Sample.mp4’
’-async’ ’1’ ’-metadata:s:v:0’ ’start_time=0’ ’-vcodec’ ’libx264’
’-acodec’ ’aac’ ’-b:v’ ’1000k’ ’-refs’ ’6’ ’-coder’ ’1’
’-sc_threshold’ ’40’ ’-flags’ ’+loop’ ’-me_range’ ’16’ ’-subq’ ’7’
’-i_qfactor’ ’0.71’ ’-qcomp’ ’0.6’ ’-qdiff’ ’4’ ’-trellis’ ’1’ ’-b:a’
’128k’ ’-vf’ ’[in]scale=320:240 [out]’ ’-pass’ ’1’ ’-passlogfile’
’/tmp/ffmpeg-passes5ce11d01dc0038yfbl/pass-5ce11d01dc0c7’
’export-x264.mp4’ in
/vendor/alchemy/binary-driver/src/Alchemy/BinaryDriver/ProcessRunner.php:100
Stack trace : #0
/vendor/alchemy/binary-driver/src/Alchemy/BinaryDriver/ProcessRunner.php(72) :
Alchemy\BinaryDriver\ProcessRunner->doExecutionFailure(’’/usr/bin/ffmpe...’)1 /vendor/alchemy/binary-driver/src/Alchemy/BinaryDriver/AbstractBinary.php(209) :
Alchemy\BinaryDriver\ProcessRunner->run(Object(Symfony\Component\Process\Process),
Object(SplObjectStorage), false) #2 /vendor/alchemy/binary-driver in
/vendor/php-ffmpeg/php-ffmpeg/src/FFMpeg/Media/AbstractVideo.php on
line 106
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