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Médias (1)
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Spitfire Parade - Crisis
15 mai 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
Autres articles (85)
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Websites made with MediaSPIP
2 mai 2011, parThis page lists some websites based on MediaSPIP.
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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 (...) -
Script d’installation automatique de MediaSPIP
25 avril 2011, parAfin de palier aux difficultés d’installation dues principalement aux dépendances logicielles coté serveur, un script d’installation "tout en un" en bash a été créé afin de faciliter cette étape sur un serveur doté d’une distribution Linux compatible.
Vous devez bénéficier d’un accès SSH à votre serveur et d’un compte "root" afin de l’utiliser, ce qui permettra d’installer les dépendances. Contactez votre hébergeur si vous ne disposez pas de cela.
La documentation de l’utilisation du script d’installation (...)
Sur d’autres sites (10378)
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FFmpeg - Vertical-Scroll Image Overlay for same duration as audio file
28 décembre 2020, par John DoeI want to scroll an image vertically, but I want the animation duration to match an mp3 file, which will be different every time. Here's what I have :


ffmpeg -y -hide_banner -f lavfi -i color=s=1280x720 -loop 1 -i "image.jpg" -filter_complex "[1:v]scale=1280:-2,setpts=if(eq(N\,0)\,0\,1+1/0.01/TB),fps=30[fg]; [0:v][fg]overlay=y=-'t*h*0.01':eof_action=endall[video]" -map "[video]" "output.mp4"



But this always produces a video with duration of 1 minute and 40 seconds, making the animation slow down or speed up accordingly. This is not what I want. I want the output video (and the scrolling animation) duration to match a random mp3 file.


I am using FFmpeg in a Batch file on Windows. Any help would be appreciated.


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avutil/mem : fix doc for reallocs
1er avril 2022, par Zhao Zhiliavutil/mem : fix doc for reallocs
The doc says those function are like av_free if size or nmemb is
zero. It doesn't match the code. av_realloc() realloc one byte if
size is zero, which was added by 91ff05f6ac5 ten years ago.
realloc() itself in C is implementation-dependent. Make the doc
match the longstanding behaviour.Signed-off-by : Zhao Zhili <zhilizhao@tencent.com>
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Revision ed2dc59c1b : Integral projection based motion estimation This commit introduces a new block
13 février 2015, par Jingning HanChanged Paths :
Modify /vp9/common/vp9_rtcd_defs.pl
Modify /vp9/encoder/vp9_avg.c
Modify /vp9/encoder/vp9_encodeframe.c
Modify /vp9/encoder/x86/vp9_avg_intrin_sse2.c
Integral projection based motion estimationThis commit introduces a new block match motion estimation
using integral projection measurement. The 2-D block and the nearby
region is projected onto the horizontal and vertical 1-D vectors,
respectively. It then runs vector match, instead of block match,
over the two separate 1-D vectors to locate the motion compensated
reference block.This process is run per 64x64 block to align the reference before
choosing partitioning in speed 6. The overall CPU cycle cost due
to this additional 64x64 block match (SSE2 version) takes around 2%
at low bit-rate rtc speed 6. When strong motion activities exist in
the video sequence, it substantially improves the partition
selection accuracy, thereby achieving better compression performance
and lower CPU cycles.The experiments were tested in RTC speed -6 setting :
cloud 1080p 500 kbps
17006 b/f, 37.086 dB, 5386 ms ->
16669 b/f, 37.970 dB, 5085 ms (>0.9dB gain and 6% faster)pedestrian_area 1080p 500 kbps
53537 b/f, 36.771 dB, 18706 ms ->
51897 b/f, 36.792 dB, 18585 ms (4% bit-rate savings)blue_sky 1080p 500 kbps
70214 b/f, 33.600 dB, 13979 ms ->
53885 b/f, 33.645 dB, 10878 ms (30% bit-rate savings, 25% faster)jimred 400 kbps
13380 b/f, 36.014 dB, 5723 ms ->
13377 b/f, 36.087 dB, 5831 ms (2% bit-rate savings, 2% slower)Change-Id : Iffdb6ea5b16b77016bfa3dd3904d284168ae649c