Recherche avancée
Autres articles (73)
-
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. -
Les formats acceptés
28 janvier 2010, parLes commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
ffmpeg -codecs ffmpeg -formats
Les format videos acceptés en entrée
Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
Les formats vidéos de sortie possibles
Dans un premier temps on (...) -
Emballe médias : à quoi cela sert ?
4 février 2011, parCe plugin vise à gérer des sites de mise en ligne de documents de tous types.
Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ;
Sur d’autres sites (8900)
-
Audio drift in Premiere (not VFR)
22 octobre 2019, par petaireI’m getting audio drift in Premiere, and it’s not related (or is it ?) to VFR. I honestly really dont know where this is coming from, but, oh God, Premiere… Obviously, when I read the file in VLC or any other player, it’s fine. But in Premiere…
Here’s my media informations :
General
Complete name : /Users/petaire/Desktop/LCI-2019-10-16_10-00-00h.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom (isom/iso2/avc1/mp41)
File size : 831 MiB
Duration : 2h 0mn
Overall bit rate : 968 Kbps
Writing application : Lavf57.83.100
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L3.1
Format settings : CABAC / 4 Ref Frames
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 2h 0mn
Bit rate : 832 Kbps
Width : 900 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 25.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.051
Stream size : 715 MiB (86%)
Writing library : x264 core 152 r2854 e9a5903
Encoding settings : cabac=1 / ref=1 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=2 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=0 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=0 / threads=16 / lookahead_threads=5 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=1 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc_lookahead=10 / rc=crf / mbtree=1 / crf=23.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00
Codec configuration box : avcC
Audio
ID : 2
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : mp4a-40-2
Duration : 1h 59mn
Bit rate mode : Constant
Bit rate : 129 Kbps
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 KHz
Frame rate : 46.875 fps (1024 SPF)
Compression mode : Lossy
Stream size : 111 MiB (13%)
Language : French
Default : Yes
Alternate group : 1Premiere…
I think it might be related to this line :
Frame rate : 46.875 fps (1024 SPF)I’m using this line for ffmpeg encoding :
ffmpeg -err_detect ignore_err -i $1 -preset veryfast -strict -2 -c:v libx264 -vf scale=-1:720 -threads $numberOfThreads $2Do you know how to force SPF to 25FPS (of the SPF equivalent) ?
-
ffmpeg encoding for 3.0 and 3.1 channels in Dolby Digital format (.ac3)
4 novembre 2019, par CC2023I was able to encode .wav to .ac3 (Dolby Digital) via.zz ffmpeg for channel 2.0, 2.1, 4.0, 4.1, 5.0, 5.1, but not channel 3.0 and 3.1.
When I played back .ac3 files on Onkyo 7.2 receiver, error on channel 3.0 and 3.1 was :
3.0 channels :
right channel ok
left channel ok
center channel played back at subwoofer
3.1 channels :
right channel ok
left channel ok
lfe channel ok
center channel played back at surround left speaker (sL)
This is command I used :
ffmpeg -i 3_channel.wav -c:a ac3 3_channel.ac3
ffmpeg -i 3_1_channel.wav -c:a ac3 3_1_channel.ac3My ffmpeg version git-2019-10-28-68f623d
Why I have successful encoding on channel 2.x, 4.x, 5.x, but not 3.x ? thanks ahead for any comments.
-
How to concatenate two or more videos with same width and different height in FFMpeg and to maintain the same aspect ratio ?
25 octobre 2019, par AarwilI have five video parts to concat all. Each five videos are in the same width and height. The second part is the hstack of another 2 videos and the third part is the hstack and vstack of another 3 videos. While concat all the five video parts the aspect ratio is not maintaining in the final video. Since I am new to ffmpeg help me to sort out the problem
I have tried with the command in my final with filter complex and to reduce the size I used frame per second.
"ffmpeg -i
final.mp4 -vf scale=1280:480 -filter:v fps=fps=30 finalNew.mp4"but nothing worked.
Also help me to use hstack with scaling, to maintain the aspect ratio for the second part on below commandCommand : ffmpeg -i vid1.mkv -i vid2.mkv -filter_complex "[0:v]scale=-1:480[v0] ;[0:v][1:v]hstack=inputs=2"vid3.mkv
Images
I have console the info of my video
ffmpeg -i part1.mkv -i part2.mkv -i part3.mkv -i part4.mkv -i part5.mkv
ffmpeg version N-94911-g197985c5bf Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 9.1.1 (GCC) 20190807
configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --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-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
libavutil 56. 35.100 / 56. 35.100
libavcodec 58. 56.101 / 58. 56.101
libavformat 58. 32.104 / 58. 32.104
libavdevice 58. 9.100 / 58. 9.100
libavfilter 7. 58.102 / 7. 58.102
libswscale 5. 6.100 / 5. 6.100
libswresample 3. 6.100 / 3. 6.100
libpostproc 55. 6.100 / 55. 6.100
Input #0, matroska,webm, from 'part1.mkv':
Metadata:
ENCODER : Lavf58.32.104
Duration: 00:00:44.00, start: 0.000000, bitrate: 189 kb/s
Stream #0:0(eng): Video: h264 (High), yuv420p(progressive), 640x480 [SAR 9:16 DAR 3:4], 30 fps, 30 tbr, 1k tbn, 60 tbc (default)
Metadata:
title : Video
ENCODER : Lavc58.56.101 libx264
DURATION : 00:00:44.000000000
Input #1, matroska,webm, from 'part2.mkv':
Metadata:
ENCODER : Lavf58.32.104
Duration: 00:01:22.07, start: 0.000000, bitrate: 113 kb/s
Stream #1:0: Video: h264 (High), yuv420p(progressive), 640x240 [SAR 9:16 DAR 3:2], 30 fps, 30 tbr, 1k tbn, 60 tbc (default)
Metadata:
ENCODER : Lavc58.56.101 libx264
DURATION : 00:01:22.066000000
Input #2, matroska,webm, from 'part3.mkv':
Metadata:
ENCODER : Lavf58.32.104
Duration: 00:00:42.03, start: 0.000000, bitrate: 405 kb/s
Stream #2:0: Video: h264 (High), yuv420p(progressive), 640x720 [SAR 9:16 DAR 1:2], 30 fps, 30 tbr, 1k tbn, 60 tbc (default)
Metadata:
ENCODER : Lavc58.56.101 libx264
DURATION : 00:00:42.033000000
Input #3, matroska,webm, from 'part4.mkv':
Metadata:
ENCODER : Lavf58.32.104
Duration: 00:00:21.00, start: 0.000000, bitrate: 298 kb/s
Stream #3:0: Video: h264 (High), yuv420p(progressive), 640x240 [SAR 9:16 DAR 3:2], 30 fps, 30 tbr, 1k tbn, 60 tbc (default)
Metadata:
ENCODER : Lavc58.56.101 libx264
DURATION : 00:00:21.000000000
Input #4, matroska,webm, from 'part5.mkv':
Metadata:
ENCODER : Lavf58.32.104
Duration: 00:00:16.00, start: 0.000000, bitrate: 169 kb/s
Stream #4:0(eng): Video: h264 (High), yuv420p(progressive), 640x480 [SAR 9:16 DAR 3:4], 30 fps, 30 tbr, 1k tbn, 60 tbc (default)
Metadata:
title : Video
ENCODER : Lavc58.56.101 libx264
DURATION : 00:00:16.000000000
Syndiquer tout le site
