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Valkaama DVD Label
4 octobre 2011, par
Mis à jour : Février 2013
Langue : English
Type : Image
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Podcasting Legal guide
16 mai 2011, par
Mis à jour : Mai 2011
Langue : English
Type : Texte
Autres articles (52)
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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. -
Selection of projects using MediaSPIP
2 mai 2011, parThe examples below are representative elements of MediaSPIP specific uses for specific projects.
MediaSPIP farm @ Infini
The non profit organizationInfini develops hospitality activities, internet access point, training, realizing innovative projects in the field of information and communication technologies and Communication, and hosting of websites. It plays a unique and prominent role in the Brest (France) area, at the national level, among the half-dozen such association. Its members (...) -
L’espace de configuration de MediaSPIP
29 novembre 2010, parL’espace de configuration de MediaSPIP est réservé aux administrateurs. Un lien de menu "administrer" est généralement affiché en haut de la page [1].
Il permet de configurer finement votre site.
La navigation de cet espace de configuration est divisé en trois parties : la configuration générale du site qui permet notamment de modifier : les informations principales concernant le site (...)
Sur d’autres sites (9260)
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avfilter/vf_cropdetect : extend limit to cover 16bit pixel formats
30 décembre 2014, par Michael Niedermayer -
ffmpeg : Cover image for video
15 avril 2014, par Michael HerrmannI have a video file
video.mp4
with sound (file information and download links below). I also have an imagecover.png
which contains a logo and a caption for the video. I want to create a new video which starts by showingcover.png
, then blends in the first frame ofvideo.mp4
within one second, then continues to playvideo.mp4
.My failed attempt :
I used ffmpeg to extract the first frame of
video.mp4
into image filefirst_frame.png
. I then created videofade.mp4
with a transition fromcover.png
tofirst_frame.png
:ffmpeg -loop 1 -i cover.png -r 24 -loop 1 -i first_frame.png -r 24 -filter_complex "[1:v][0:v]blend=all_expr='A*(if(gte(T,1),1,T/1))+B*(1-(if(gte(T,1),1,T/1)))'" -t 2 fade.mp4
I then wanted to simply concatenate
fade.mp4
andvideo.mp4
to produce the desired result. I created a filemylist.txt
with the following contents :file 'fade.mp4'
file 'video.mp4'Then I issued the following command to
ffmpeg
:ffmpeg -f concat -i mylist.txt -c copy out.mp4
Unfortunately, this produced a lot of warnings of the following form :
[concat @ 00000000003580e0] Invalid stream index 1:01:24.05 bitrate= 136.3kbits/s
The resulting video
out.mp4
does correctly start withfade.mp4
, but unfortunately continues with completely random colour patterns when it comes to playingvideo.mp4
.File information for
video.mp4
:- Stream 0 :
- Type : Video
- Codec : H264 - MPEG-4 AVC (part10) (avc1)
- Resolution : 800x600
- Frame rate : 24
- Decoded format : Planar 4:2:0 YUV
- Stream 1 :
- Type : Audio
- Codec : MPEG Audio layer 1/2/3 (mpga)
- Channels : Mono
- Sample rate : 16000 Hz
- Bitrate : 24 kb/s
File information for
cover.png
:- Resolution : 800x600
Links to files :
video.mp4
: https://www.dropbox.com/s/ci5wlz7abn232go/video.mp4cover.png
: https://www.dropbox.com/s/8eeon1j213s6l5x/cover.pngfirst_frame.mp4
: https://www.dropbox.com/s/hrxzcdjki0b9xqt/first_frame.pngfade.mp4
: https://www.dropbox.com/s/ohuf98xn3gmkniq/fade.mp4mylist.txt
: https://www.dropbox.com/s/kjqnzsa50uslqcr/mylist.txtout.mp4
: https://www.dropbox.com/s/0h27z7ahjg3pbbw/out.mp4
- Stream 0 :
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Revision 4d0d78424b : Increase the thread test range to cover 5, 6, 7, 8 threads. Change-Id : Id25c294
5 septembre 2014, par hkuangChanged Paths :
Modify /test/test_vector_test.cc
Increase the thread test range to cover 5, 6, 7, 8 threads.Change-Id : Id25c294720551bb5153987d8758668befaa57929