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Autres articles (74)
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Mise à jour de la version 0.1 vers 0.2
24 juin 2013, parExplications des différents changements notables lors du passage de la version 0.1 de MediaSPIP à la version 0.3. Quelles sont les nouveautés
Au niveau des dépendances logicielles Utilisation des dernières versions de FFMpeg (>= v1.2.1) ; Installation des dépendances pour Smush ; Installation de MediaInfo et FFprobe pour la récupération des métadonnées ; On n’utilise plus ffmpeg2theora ; On n’installe plus flvtool2 au profit de flvtool++ ; On n’installe plus ffmpeg-php qui n’est plus maintenu au (...) -
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 (...) -
Gestion des droits de création et d’édition des objets
8 février 2011, parPar défaut, beaucoup de fonctionnalités sont limitées aux administrateurs mais restent configurables indépendamment pour modifier leur statut minimal d’utilisation notamment : la rédaction de contenus sur le site modifiables dans la gestion des templates de formulaires ; l’ajout de notes aux articles ; l’ajout de légendes et d’annotations sur les images ;
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How can I use ffmpeg and youtube-dl to download the first frame of every video in a playlist ?
18 janvier, par Chi Long QuaI'm trying to download only the first frame of every video in a large playlist on YouTube. Does anybody know how I can use ffmpeg and youtube-dl to do this ?


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What does A->A and VV->V etc. mean in the `ffmpeg -filters` command output ?
8 janvier 2024, par LanceI am seeing this :


Filters:
 T.. = Timeline support
 .S. = Slice threading
 ..C = Command support
 A = Audio input/output
 V = Video input/output
 N = Dynamic number and/or type of input/output
 | = Source or sink filter
... abench A->A Benchmark part of a filtergraph.
..C acompressor A->A Audio compressor.
... acontrast A->A Simple audio dynamic range compression/expansion filter.
... acopy A->A Copy the input audio unchanged to the output.
... acue A->A Delay filtering to match a cue.
... acrossfade AA->A Cross fade two input audio streams.
...
TSC colormap VVV->V Apply custom Color Maps to video stream.
TS. colormatrix V->V Convert color matrix.
TS. colorspace V->V Convert between colorspaces.
TSC colortemperature V->V Adjust color temperature of video.
TSC convolution V->V Apply convolution filter.
TS. convolve VV->V Convolve first video stream with second video stream.
...



A few questions :


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What does this part of the filters intro mean ?


A = Audio input/output
 V = Video input/output
 N = Dynamic number and/or type of input/output
 | = Source or sink filter



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What does the
A->A
andVVV->V
(and any combination of 1+ A or 1+ V) mean ?

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Where do the
N
and|
show up, I don't see it anywhere...









I am hoping to convert this CLI data output to JSON, but don't know what those mean.


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lavfi/internal : move functions used by filters to filters.h
12 août 2024, par Anton Khirnovlavfi/internal : move functions used by filters to filters.h
internal.h currently mixes interfaces intended to be used by filters
with those that should be limited to generic filter- or graph-level
code.- [DH] libavfilter/af_acontrast.c
- [DH] libavfilter/af_acopy.c
- [DH] libavfilter/af_acrusher.c
- [DH] libavfilter/af_adecorrelate.c
- [DH] libavfilter/af_adenorm.c
- [DH] libavfilter/af_aderivative.c
- [DH] libavfilter/af_adynamicequalizer.c
- [DH] libavfilter/af_adynamicsmooth.c
- [DH] libavfilter/af_aemphasis.c
- [DH] libavfilter/af_aexciter.c
- [DH] libavfilter/af_aformat.c
- [DH] libavfilter/af_afreqshift.c
- [DH] libavfilter/af_alimiter.c
- [DH] libavfilter/af_anequalizer.c
- [DH] libavfilter/af_anull.c
- [DH] libavfilter/af_aphaser.c
- [DH] libavfilter/af_apulsator.c
- [DH] libavfilter/af_asetrate.c
- [DH] libavfilter/af_asoftclip.c
- [DH] libavfilter/af_asr.c
- [DH] libavfilter/af_astats.c
- [DH] libavfilter/af_asubboost.c
- [DH] libavfilter/af_asupercut.c
- [DH] libavfilter/af_atempo.c
- [DH] libavfilter/af_atilt.c
- [DH] libavfilter/af_bs2b.c
- [DH] libavfilter/af_channelmap.c
- [DH] libavfilter/af_chorus.c
- [DH] libavfilter/af_compand.c
- [DH] libavfilter/af_compensationdelay.c
- [DH] libavfilter/af_crystalizer.c
- [DH] libavfilter/af_dcshift.c
- [DH] libavfilter/af_deesser.c
- [DH] libavfilter/af_drmeter.c
- [DH] libavfilter/af_earwax.c
- [DH] libavfilter/af_extrastereo.c
- [DH] libavfilter/af_flanger.c
- [DH] libavfilter/af_haas.c
- [DH] libavfilter/af_hdcd.c
- [DH] libavfilter/af_ladspa.c
- [DH] libavfilter/af_mcompand.c
- [DH] libavfilter/af_pan.c
- [DH] libavfilter/af_silencedetect.c
- [DH] libavfilter/af_stereotools.c
- [DH] libavfilter/af_stereowiden.c
- [DH] libavfilter/af_tremolo.c
- [DH] libavfilter/af_vibrato.c
- [DH] libavfilter/af_volumedetect.c
- [DH] libavfilter/asink_anullsink.c
- [DH] libavfilter/audio.c
- [DH] libavfilter/audio.h
- [DH] libavfilter/avfiltergraph.c
- [DH] libavfilter/dnn/dnn_interface.c
- [DH] libavfilter/f_bench.c
- [DH] libavfilter/f_realtime.c
- [DH] libavfilter/f_reverse.c
- [DH] libavfilter/f_sidedata.c
- [DH] libavfilter/filters.h
- [DH] libavfilter/formats.c
- [DH] libavfilter/graphdump.c
- [DH] libavfilter/graphparser.c
- [DH] libavfilter/internal.h
- [DH] libavfilter/vf_addroi.c
- [DH] libavfilter/vf_amplify.c
- [DH] libavfilter/vf_aspect.c
- [DH] libavfilter/vf_atadenoise.c
- [DH] libavfilter/vf_avgblur.c
- [DH] libavfilter/vf_avgblur_opencl.c
- [DH] libavfilter/vf_avgblur_vulkan.c
- [DH] libavfilter/vf_backgroundkey.c
- [DH] libavfilter/vf_bilateral.c
- [DH] libavfilter/vf_bitplanenoise.c
- [DH] libavfilter/vf_blackframe.c
- [DH] libavfilter/vf_boxblur.c
- [DH] libavfilter/vf_bwdif.c
- [DH] libavfilter/vf_cas.c
- [DH] libavfilter/vf_chromaber_vulkan.c
- [DH] libavfilter/vf_chromakey.c
- [DH] libavfilter/vf_chromanr.c
- [DH] libavfilter/vf_chromashift.c
- [DH] libavfilter/vf_ciescope.c
- [DH] libavfilter/vf_codecview.c
- [DH] libavfilter/vf_colorbalance.c
- [DH] libavfilter/vf_colorchannelmixer.c
- [DH] libavfilter/vf_colorconstancy.c
- [DH] libavfilter/vf_colorcontrast.c
- [DH] libavfilter/vf_colorcorrect.c
- [DH] libavfilter/vf_colorize.c
- [DH] libavfilter/vf_colorkey.c
- [DH] libavfilter/vf_colorkey_opencl.c
- [DH] libavfilter/vf_colorlevels.c
- [DH] libavfilter/vf_colormatrix.c
- [DH] libavfilter/vf_colorspace.c
- [DH] libavfilter/vf_colortemperature.c
- [DH] libavfilter/vf_convolution.c
- [DH] libavfilter/vf_convolution_opencl.c
- [DH] libavfilter/vf_copy.c
- [DH] libavfilter/vf_cropdetect.c
- [DH] libavfilter/vf_curves.c
- [DH] libavfilter/vf_dblur.c
- [DH] libavfilter/vf_dctdnoiz.c
- [DH] libavfilter/vf_deband.c
- [DH] libavfilter/vf_deblock.c
- [DH] libavfilter/vf_deflicker.c
- [DH] libavfilter/vf_derain.c
- [DH] libavfilter/vf_deshake.c
- [DH] libavfilter/vf_despill.c
- [DH] libavfilter/vf_drawbox.c
- [DH] libavfilter/vf_drawbox_vaapi.c
- [DH] libavfilter/vf_edgedetect.c
- [DH] libavfilter/vf_elbg.c
- [DH] libavfilter/vf_entropy.c
- [DH] libavfilter/vf_epx.c
- [DH] libavfilter/vf_exposure.c
- [DH] libavfilter/vf_fftdnoiz.c
- [DH] libavfilter/vf_field.c
- [DH] libavfilter/vf_fieldorder.c
- [DH] libavfilter/vf_fillborders.c
- [DH] libavfilter/vf_flip_vulkan.c
- [DH] libavfilter/vf_format.c
- [DH] libavfilter/vf_fspp.c
- [DH] libavfilter/vf_gblur.c
- [DH] libavfilter/vf_gblur_vulkan.c
- [DH] libavfilter/vf_gradfun.c
- [DH] libavfilter/vf_grayworld.c
- [DH] libavfilter/vf_hflip.c
- [DH] libavfilter/vf_histeq.c
- [DH] libavfilter/vf_histogram.c
- [DH] libavfilter/vf_hqdn3d.c
- [DH] libavfilter/vf_hqx.c
- [D