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Autres articles (96)
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MediaSPIP Core : La Configuration
9 novembre 2010, parMediaSPIP Core fournit par défaut trois pages différentes de configuration (ces pages utilisent le plugin de configuration CFG pour fonctionner) : une page spécifique à la configuration générale du squelettes ; une page spécifique à la configuration de la page d’accueil du site ; une page spécifique à la configuration des secteurs ;
Il fournit également une page supplémentaire qui n’apparait que lorsque certains plugins sont activés permettant de contrôler l’affichage et les fonctionnalités spécifiques (...) -
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, (...) -
Ajouter notes et légendes aux images
7 février 2011, parPour pouvoir ajouter notes et légendes aux images, la première étape est d’installer le plugin "Légendes".
Une fois le plugin activé, vous pouvez le configurer dans l’espace de configuration afin de modifier les droits de création / modification et de suppression des notes. Par défaut seuls les administrateurs du site peuvent ajouter des notes aux images.
Modification lors de l’ajout d’un média
Lors de l’ajout d’un média de type "image" un nouveau bouton apparait au dessus de la prévisualisation (...)
Sur d’autres sites (10165)
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Problems piping ffmpeg to flac encoder
19 mai 2019, par Sebastian OlsenI need to encode a flac file with seektables, ffmpeg’s flac encoder does not include seektables, so I need to use the flac CLI. I’m trying to make it possible to convert any arbitrary audio file to a seekable flac file by first piping it through ffmpeg, then to the flac encoder.
export const transcodeToFlac: AudioTranscoder<{}> = ({
source,
destination
}) => {
return new Promise((resolve, reject) => {
let totalSize = 0
const { stdout: ffmpegOutput, stderr: ffmpegError } = spawn("ffmpeg", [
"-i",
source,
"-f",
"wav",
"pipe:1"
])
const { stdout: flacOutput, stdin: flacInput, stderr: flacError } = spawn(
"flac",
["-"]
)
flacOutput.on("data", (buffer: Buffer) => {
totalSize += buffer.byteLength
})
ffmpegError.on("data", error => {
console.log(error.toString())
})
flacError.on("data", error => {
console.log(error.toString())
})
//stream.on("error", reject)
destination.on("finish", () => {
resolve({
mime: "audio/flac",
size: totalSize,
codec: "flac",
bitdepth: 16,
ext: "flac"
})
})
ffmpegOutput.pipe(flacInput)
flacOutput.pipe(destination)
})
}While this code works, the resulting flac file is not correct. The source audio is of duration
06:14
, but the flac file is of duration06:45:47
. Encoding the flac manually without piping ffmpeg to it works fine, but I cannot do that in a server environment where I need to utilize streams.Here’s what the flac encoder outputs when transcoding :
flac 1.3.2
Copyright (C) 2000-2009 Josh Coalson, 2011-2016 Xiph.Org Foundation
flac comes with ABSOLUTELY NO WARRANTY. This is free software, and you are
welcome to redistribute it under certain conditions. Type `flac' for details.
-: WARNING: skipping unknown chunk 'LIST' (use --keep-foreign-metadata to keep)
-: WARNING, cannot write back seekpoints when encoding to stdout
-: 0% complete, ratio=0.357
0% complete, ratio=0.432
0% complete, ratio=0.482
0% complete, ratio=0.527
0% complete, ratio=0.541
1% complete, ratio=0.554
1% complete, ratio=0.563
1% complete, ratio=0.571
size= 36297kB time=00:03:30.70 bitrate=1411.2kbits/s speed= 421x
1% complete, ratio=0.572
1% complete, ratio=0.570
1% complete, ratio=0.577
1% complete, ratio=0.583
1% complete, ratio=0.584
1% complete, ratio=0.590
1% complete, ratio=0.592
size= 64512kB time=00:06:14.49 bitrate=1411.2kbits/s speed= 421x
video:0kB audio:64512kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead:
0.000185%
-: WARNING: unexpected EOF; expected 1073741823 samples, got 16510976 samples
2% complete, ratio=0.579 -
Nginx rtmp exec command not working in macOS
8 janvier 2020, par JoshThe nginx rtmp exec command not working on my macOS.
I checked the error log file and saw this error.2019/05/19 19:45:24 [alert] 32986#0: kevent() error on 13 filter:-1 flags:4002 (2: No such file or directory)
I have no idea what is that mean and i searched so much about it and i didn’t find anything.
Config file
rtmp {
server {
listen 8080;
chunk_size 4096;
application publish {
live on;
record off;
allow publish all;
allow play all;
exec echo "" > /test.txt;
# I even test that command with bash file
exec /Users/josh/Projects/server/test.sh;
}
application hls {
live on;
record off;
hls on;
hls_path /usr/local/nginx/html/live;
hls_fragment 15s;
}
}
} -
10bit DPX to DNXHR_444 with FFmpeg causing colour shift
15 août 2019, par Josh NortheastI’m trying to build a python application to convert a 10bit DPX sequence to a 4k DNXHR_444 MOV with a Arri to Rec709 lut, just as I would in Davcincci resolve.
ffmpeg -f image2 -framerate 24 -pattern_type glob -i INPUT.dpx -c:v dnxhd -profile:v dnxhr_444 -vf lut3d=ArriAlexa_LogCtoRec709_Resolve.cube,colormatrix=bt601:bt709 -pix_fmt yuv444p10le -c:a pcm_s16le -y -timecode 00:00:41:16 OUTPUT.mov
When comparing the output to the dpx in resolve with the lut on it, there is a slight colour shift making everything slightly more red. Even when i take the lut out of the ffmpeg code, there is still a slight redness. The colourmatrix helps a bit to get it closer but it isn’t close enough. Any ideas why I can’t get them to match ?
LOG :
ffmpeg -f image2 -framerate 24 -pattern_type glob -i /dpx/*.dpx -c:v dnxhd -profile:v dnxhr_444 -vf lut3d=/Arri/ArriAlexa_LogCtoRec709_Resolve.cube,colormatrix=bt601:bt709 -pix_fmt yuv444p10le -c:a pcm_s16le -y -timecode 00:00:41:16 /dpx/test.mov
ffmpeg version 4.2-static https://johnvansickle.com/ffmpeg/ Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516
configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-6 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp --enable-libgme --enable-gray --enable-libaom --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libdav1d --enable-libxvid --enable-libzvbi --enable-libzimg
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
Input #0, image2, from '/dpx/*.dpx':
Duration: 00:00:07.67, start: 0.000000, bitrate: N/A
Stream #0:0: Video: dpx, gbrp10le, 4096x1716 [SAR 1:1 DAR 1024:429], 24 tbr, 24 tbn, 24 tbc
Stream mapping:
Stream #0:0 -> #0:0 (dpx (native) -> dnxhd (native))
Press [q] to stop, [?] for help
Output #0, mov, to '/dpx/test.mov':
Metadata:
timecode : 00:00:41:16
encoder : Lavf58.29.100
Stream #0:0: Video: dnxhd (DNXHR 444) (AVdh / 0x68645641), yuv444p10le, 4096x1716 [SAR 1:1 DAR 1024:429], q=2-1024, 200 kb/s, 0.04 fps, 12288 tbn, 24 tbc
Metadata:
encoder : Lavc58.54.100 dnxhd
frame= 184 fps=1.9 q=1.0 Lsize= 1117250kB time=00:00:07.62 bitrate=1200316.8kbits/s speed=0.0799x
video:1117248kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.000187%Here is a :
- JPG - reference of what the DPX + LUT should look like
- DPX - a frame of the dpx sequence I’m trying to convert to DNXHR_444
- the ArriLogC_to_Rec709 LUT to be applied to the DPX
Let me know if you need anything else.
https://drive.google.com/drive/folders/1j2Qq1sV5ZJJsMYe3DOFOV0dnQ3VIotcw
Cheers,
Josh