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Autres articles (74)
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Des sites réalisés avec MediaSPIP
2 mai 2011, parCette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page. -
Support de tous types de médias
10 avril 2011Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)
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Soumettre améliorations et plugins supplémentaires
10 avril 2011Si vous avez développé une nouvelle extension permettant d’ajouter une ou plusieurs fonctionnalités utiles à MediaSPIP, faites le nous savoir et son intégration dans la distribution officielle sera envisagée.
Vous pouvez utiliser la liste de discussion de développement afin de le faire savoir ou demander de l’aide quant à la réalisation de ce plugin. MediaSPIP étant basé sur SPIP, il est également possible d’utiliser le liste de discussion SPIP-zone de SPIP pour (...)
Sur d’autres sites (7305)
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avformat/mxfdec : SMPTE RDD 48:2018 Amd 1:2022 support
9 juillet 2022, par Michael Niedermayer -
Location of the amd64 compiler in Visual Studio 2022 | Compiling FFmpeg with NVENC
6 juin 2022, par Gal GrünfeldI'm trying to follow Nvidia's guide to compile FFmpeg with nvenc support on Windows and it has a stage to export the path of Visual Studio's 2013 SP2 amd64 compiler to the global path variable of the compilation dev environment :




export PATH="/c/Program Files (x86)/Microsoft Visual Studio 12.0/VC/BIN/amd64/" :$PATH




They say earlier in the guide that for different versions of Visual Studio different path might be required. I'm trying to use Visual Studio 2022 Community, but don't know where its amd64 compiler directory is.
I also don't know what
that VCstands for ("Visual C", maybe, whatever that "Visual" might mean ?).

I found in the installation directory of Visual Studio 2022 a few directories named
amd64but none of them were under one withVCor something similar in its name.
The one I think is the most likely candidate to be the updated compiler is at/MSBuild\Current\Bin\amd64.

If anyone knows, please tell me if if this is the right path, and if not, what is the right path.


Microsoft does offer a version of Visual Studio 2013 Update 2, though (I assume they changed their naming scheme from "service packs" to "updates, which would make it the same software), but it doesn't offer a 64-bit version of it, and I want to compile a 64-bit software - so I assume it doesn't come with one. Please do correct me if I'm wrong, it'd save me needing to use a version of Visual Studio that is different than the one in the guide.


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ffmpeg - error processing files generated by premier pro 2022
23 mai 2022, par QRrabbitPlease help with the error, trying to re-encode the source file produced with prores 4444+alpha. Alpha channel is required in my case.


I've tried two separate options, both are erroring out :


$ ffmpeg -i Input.mxf -vcodec prores_ks -profile:v 4 -y Output.mxf 


I'm getting this output


ffmpeg version 4.4 Copyright (c) 2000-2021 the FFmpeg developers
 built with Apple clang version 12.0.5 (clang-1205.0.22.9)
 configuration: --prefix=/usr/local/Cellar/ffmpeg/4.4_2 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-avresample --enable-videotoolbox
 libavutil 56. 70.100 / 56. 70.100
 libavcodec 58.134.100 / 58.134.100
 libavformat 58. 76.100 / 58. 76.100
 libavdevice 58. 13.100 / 58. 13.100
 libavfilter 7.110.100 / 7.110.100
 libavresample 4. 0. 0 / 4. 0. 0
 libswscale 5. 9.100 / 5. 9.100
 libswresample 3. 9.100 / 3. 9.100
 libpostproc 55. 9.100 / 55. 9.100
Input #0, mxf, from 'Input.mxf':
 Metadata:
 operational_pattern_ul: 060e2b34.04010101.0d010201.01010100
 uid : b52947e8-d982-11ec-9a2d-b42e99ab5f4d
 generation_uid : b52947e9-d982-11ec-a612-b42e99ab5f4d
 company_name : Adobe Inc.
 product_name : Premiere Pro
 product_version_num: 2.0.0.0.1
 product_version : 22.4.0
 application_platform: Mac OS X
 product_uid : 0c3919fe-46e8-11e5-a151-feff819cdc9f
 toolkit_version_num: 5.3.6.0.1
 modification_date: 2022-05-22T03:53:15.000000Z
 material_package_umid: 0x060A2B340101010501010D1113000000F88BD5002197058861C9B42E99AB5F4D
 timecode : 00:00:00;00
 Duration: 00:00:59.66, start: 0.000000, bitrate: 32803 kb/s
 Stream #0:0: Video: prores (4444) (ap4h / 0x68347061), yuva444p12le(tv, bt709, progressive), 1920x1080, SAR 1:1 DAR 16:9, 29.97 tbr, 29.97 tbn, 29.97 tbc
 Metadata:
 file_package_umid: 0x060A2B34010101050101051213D028BEF88BD500219705880089B42E99AB5F4D
 file_package_name: Source Package
 track_name : Track 1
Stream mapping:
 Stream #0:0 -> #0:0 (prores (native) -> prores (prores_ks))
Press [q] to stop, [?] for help
Output #0, mxf, to 'Output.mxf':
 Metadata:
 operational_pattern_ul: 060e2b34.04010101.0d010201.01010100
 uid : b52947e8-d982-11ec-9a2d-b42e99ab5f4d
 generation_uid : b52947e9-d982-11ec-a612-b42e99ab5f4d
 timecode : 00:00:00;00
 material_package_umid: 0x060A2B340101010501010D1113000000F88BD5002197058861C9B42E99AB5F4D
 product_version_num: 2.0.0.0.1
 modification_date: 2022-05-22T03:53:15.000000Z
 application_platform: Mac OS X
 product_uid : 0c3919fe-46e8-11e5-a151-feff819cdc9f
 toolkit_version_num: 5.3.6.0.1
 encoder : Lavf58.76.100
 Stream #0:0: Video: prores (ap4h / 0x68347061), yuva444p10le(tv, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 29.97 fps, 29.97 tbn
 Metadata:
 file_package_umid: 0x060A2B34010101050101051213D028BEF88BD500219705880089B42E99AB5F4D
 file_package_name: Source Package
 track_name : Track 1
 encoder : Lavc58.134.100 prores_ks
[mxf @ 0x7fbbbc008200] could not get prores profile0:00.00 bitrate=N/A speed= 0x 
av_interleaved_write_frame(): Operation not permitted
Error writing trailer of Output.mxf: Unknown error occurred
frame= 33 fps= 27 q=-0.0 Lsize= 0kB time=00:00:00.03 bitrate= 0.0kbits/s speed=0.027x 
video:67kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Conversion failed!


Above I can't even fully see the error since the red text over black background covers the screen :



I have also tried the following encoding options :


-c:v qtrle -pix_fmt argb 


to which, I'm getting the following error :


track 0: could not find essence container ul, codec not currently supported in container
Could not write header for output file #0 (incorrect codec parameters ?): Operation not permitted
Error initializing output stream 0:0 --
Conversion failed!


In case this is helpful, I'm displaying MediaInfo for the source file :



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