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Autres articles (37)
-
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. -
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, (...) -
Publier sur MédiaSpip
13 juin 2013Puis-je poster des contenus à partir d’une tablette Ipad ?
Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir
Sur d’autres sites (4969)
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ffmpeg 180 degree panoramic fisheye image to equirectangular / flat
7 juillet 2024, par Willy62I am trying to get my Hikvision Panovu image of a sportsfield to look like a standard camera image, similar to what would be seen with a Veo solution / traditional camera.


This is what the image would ideally look like with a little bit of zoom. Note the players are all upright and it looks "correct" and not skewed with the far end of the field in line with the horizon.




The original image looks like this (same field but other side). This is a 180 degree panoramic image from a Hikvision camera as found here.


It provides the following output natively.




I have had some luck converting the image with ffmpeg using the v360 filter. Note there is a downward tilt meaning I have to apply some yaw to correct it.


v360=input=fisheye:output=rectilinear:ih_fov=180:iv_fov=87.5:d_fov=87.5:pitch=20:yaw=5:w=3840:h=2160


And this gets the following output :




So the challenge here to make the original image flat/equirect but to address the skew such that :


- 

- the players are orientated "upright"
- the far sideline of the field looks like a straight line in line with the horizon
- the image quality is preserved as best as possible








With these cameras the image is 32MP so there is the opportunity to do an ePTZ into the area of interest.


I suspect v360 isnt the right choice here and it is some remap-style filter, or perhaps I am best going across to gstreamer or similar.


I tried an ffmpeg v360 filter and it partially works, but the players are still skewed because the top of the image is not wide enough. The issue can possibly be solved by correctly applying a couplex perspective filter, but I think this will only mask the issue and perspective requires a complex filter that hasn't worked for me so far.


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How to optimize FFMPEG/ Chromacast video ?
5 août 2021, par HasanRe-broadcast a live broadcast by chromecasting it. The code below delays 5 seconds.


Server I use :
https://instances.vantage.sh/?selected=c5.2xlarge


Can you help me optimize the code ?


chromakey.sh



# Combine two files using a chromakey effects
filter_complex(){
 local videoWith="${1:-1920}" # Video Size
 local videoHeight="${2:-1080}" # Video Size
 local key="${3:-00FF00}" # Colorkey colour - default vaue is 0000FF or green
 local colorSim="${4:-0.2}" # Colorkey similarity level - default value is 0.2
 local colorBlend="${5:-0.1}" # Colorkey blending level - default value is 0.1

 # Update color variable according to user input
 # This makes the matching case insensitive
 if [[ $3 =~ ^[0-9A-F]{6}$ ]]; then
 key=$3
 elif [[ $(tr "[:upper:]" "[:lower:]" <<<"$1") = "blue" ]]; then
 key="0000FF"
 elif [[ $(tr "[:upper:]" "[:lower:]" <<<"$1") = "green" ]]; then
 key="00FF00"
 elif [[ $(tr "[:upper:]" "[:lower:]" <<<"$1") = "red" ]]; then
 key="FF0000"
 elif [[ $(tr "[:upper:]" "[:lower:]" <<<"$1") = "purple" ]]; then
 key="0000FF"
 elif [[ $(tr "[:upper:]" "[:lower:]" <<<"$1") = "orange" ]]; then
 key="ff9900"
 elif [[ $(tr "[:upper:]" "[:lower:]" <<<"$1") = "yellow" ]]; then
 key="FFFF00"
 fi

 
 filterString="[1:v]scale=$videoWith x $videoHeight,chromakey=0 x $key:$colorSim:$colorBlend[ckout];[0:v]scale=(iw*sar)*max($videoWith/(iw*sar)\,$videoHeight/ih):ih*max($videoWith/(iw*sar)\,$videoHeight/ih), crop=$videoWith:$videoHeight[bg];[bg][ckout]overlay[out]"
 
 printf '%s%s%s%s%s' $filterString
}

ffmpeg -re -stream_loop -1 -i "${1}" -i "${2}" -preset ultrafast -filter_complex "$(filter_complex "${@:4}")" -map '[out]' -c:v libx264 -f flv "${3}"


Usage : ./chromakey.sh mask.mp4 http://example.com/live/broadcast_orj rtmp ://example.com/live/broadcast_greenscreen 1920 1080 green 0.1 0.2


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FFMpeg mxf streamcopy strips vbi_vanc_smpte_436m stream
29 décembre 2016, par VinceHi i was using ffmpeg to copy all video/audio/data streams across to another mxf file and noticed that ancillary data streams weren’t being copied and in fact caused an error.
ffmpeg -i "D:\Media\61003203.mxf" -map 0 -c copy "D:\Media\POC_61003203.mxf"I wasn’t looking for the stream to be decoded/encoded but just a stream copy.
Any ideas ?libavfilter 6. 68.100 / 6. 68.100
libswscale 4. 3.101 / 4. 3.101
libswresample 2. 4.100 / 2. 4.100
libpostproc 54. 2.100 / 54. 2.100
[mxf @ 00000000020f24a0] material track 68: has 3 components
Guessed Channel Layout for Input Stream #0.1 : mono
Guessed Channel Layout for Input Stream #0.2 : mono
Guessed Channel Layout for Input Stream #0.3 : mono
Guessed Channel Layout for Input Stream #0.4 : mono
Guessed Channel Layout for Input Stream #0.5 : mono
Guessed Channel Layout for Input Stream #0.6 : mono
Guessed Channel Layout for Input Stream #0.7 : mono
Guessed Channel Layout for Input Stream #0.8 : mono
Guessed Channel Layout for Input Stream #0.9 : mono
Guessed Channel Layout for Input Stream #0.10 : mono
Guessed Channel Layout for Input Stream #0.11 : mono
Guessed Channel Layout for Input Stream #0.12 : mono
Guessed Channel Layout for Input Stream #0.13 : mono
Guessed Channel Layout for Input Stream #0.14 : mono
Guessed Channel Layout for Input Stream #0.15 : mono
Guessed Channel Layout for Input Stream #0.16 : mono
Guessed Channel Layout for Input Stream #0.17 : mono
Guessed Channel Layout for Input Stream #0.18 : mono
Guessed Channel Layout for Input Stream #0.19 : mono
Guessed Channel Layout for Input Stream #0.20 : mono
Guessed Channel Layout for Input Stream #0.21 : mono
Guessed Channel Layout for Input Stream #0.22 : mono
Guessed Channel Layout for Input Stream #0.23 : mono
Guessed Channel Layout for Input Stream #0.24 : mono
Guessed Channel Layout for Input Stream #0.25 : mono
Guessed Channel Layout for Input Stream #0.26 : mono
Guessed Channel Layout for Input Stream #0.27 : mono
Guessed Channel Layout for Input Stream #0.28 : mono
Guessed Channel Layout for Input Stream #0.29 : mono
Guessed Channel Layout for Input Stream #0.30 : mono
Guessed Channel Layout for Input Stream #0.31 : mono
Guessed Channel Layout for Input Stream #0.32 : mono
Input #0, mxf, from 'D:\Media\test\61003203.mxf':
Metadata:
company_name : Grass Valley
product_name : K2
product_version : 9.6.4.2374
product_uid : caf3d2ff-9425-4086-addf-66f77967f101
modification_date: 2016-11-02T10:39:56.000000Z
generation_uid : 14bd7cca-9235-148c-036a-28fe20524153
uid : 14bd7d74-9235-148c-1b22-28fe20524153
material_package_umid: 0x060A2B340101010501010F431300000014BD7D929235148C04D
028FE20524153
material_package_name: Material Package for EUSNBKS005/V:/B02-Playout/610032
03
timecode : 17:03:58:15
Duration: 00:38:59.96, start: 0.000000, bitrate: 90620 kb/s
Stream #0:0: Video: mpeg2video (4:2:2), yuv422p(tv, top first), 1920x1080 [S
AR 1:1 DAR 16:9], 50000 kb/s, 25 fps, 25 tbr, 25 tbn, 50 tbc
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Video Track #1
Stream #0:1: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Audio Track #1
Stream #0:2: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Audio Track #2
Stream #0:3: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Audio Track #3
Stream #0:4: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Audio Track #4
Stream #0:5: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Audio Track #5
Stream #0:6: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Audio Track #6
Stream #0:7: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Audio Track #7
Stream #0:8: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Audio Track #8
Stream #0:9: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Audio Track #9
Stream #0:10: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Audio Track #10
Stream #0:11: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Audio Track #11
Stream #0:12: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Audio Track #12
Stream #0:13: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Audio Track #13
Stream #0:14: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Audio Track #14
Stream #0:15: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Audio Track #15
Stream #0:16: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Audio Track #16
Stream #0:17: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Audio Track #17
Stream #0:18: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Audio Track #18
Stream #0:19: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Audio Track #19
Stream #0:20: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Audio Track #20
Stream #0:21: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Audio Track #21
Stream #0:22: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Audio Track #22
Stream #0:23: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Audio Track #23
Stream #0:24: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Audio Track #24
Stream #0:25: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Audio Track #25
Stream #0:26: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Audio Track #26
Stream #0:27: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Audio Track #27
Stream #0:28: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Audio Track #28
Stream #0:29: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Audio Track #29
Stream #0:30: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Audio Track #30
Stream #0:31: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Audio Track #31
Stream #0:32: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Audio Track #32
Stream #0:33: Data: none
Metadata:
file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
8FE20524153
file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
track_name : Material Package: Data Track #1
data_type : vbi_vanc_smpte_436M
[mxf @ 000000000290c460] track 33: could not find essence container ul, codec no
t currently supported in container
Could not write header for output file #0 (incorrect codec parameters ?): Operat
ion not permitted
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (copy)
Stream #0:2 -> #0:2 (copy)
Stream #0:3 -> #0:3 (copy)
Stream #0:4 -> #0:4 (copy)
Stream #0:5 -> #0:5 (copy)
Stream #0:6 -> #0:6 (copy)
Stream #0:7 -> #0:7 (copy)
Stream #0:8 -> #0:8 (copy)
Stream #0:9 -> #0:9 (copy)
Stream #0:10 -> #0:10 (copy)
Stream #0:11 -> #0:11 (copy)
Stream #0:12 -> #0:12 (copy)
Stream #0:13 -> #0:13 (copy)
Stream #0:14 -> #0:14 (copy)
Stream #0:15 -> #0:15 (copy)
Stream #0:16 -> #0:16 (copy)
Stream #0:17 -> #0:17 (copy)
Stream #0:18 -> #0:18 (copy)
Stream #0:19 -> #0:19 (copy)
Stream #0:20 -> #0:20 (copy)
Stream #0:21 -> #0:21 (copy)
Stream #0:22 -> #0:22 (copy)
Stream #0:23 -> #0:23 (copy)
Stream #0:24 -> #0:24 (copy)
Stream #0:25 -> #0:25 (copy)
Stream #0:26 -> #0:26 (copy)
Stream #0:27 -> #0:27 (copy)
Stream #0:28 -> #0:28 (copy)
Stream #0:29 -> #0:29 (copy)
Stream #0:30 -> #0:30 (copy)
Stream #0:31 -> #0:31 (copy)
Stream #0:32 -> #0:32 (copy)
Stream #0:33 -> #0:33 (copy)
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