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Gestion de la ferme
2 mars 2010, parLa ferme est gérée dans son ensemble par des "super admins".
Certains réglages peuvent être fais afin de réguler les besoins des différents canaux.
Dans un premier temps il utilise le plugin "Gestion de mutualisation" -
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 (...) -
Gestion des droits de création et d’édition des objets
8 février 2011, parPar défaut, beaucoup de fonctionnalités sont limitées aux administrateurs mais restent configurables indépendamment pour modifier leur statut minimal d’utilisation notamment : la rédaction de contenus sur le site modifiables dans la gestion des templates de formulaires ; l’ajout de notes aux articles ; l’ajout de légendes et d’annotations sur les images ;
Sur d’autres sites (7407)
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Cannot get JACK Audio/Netjack working over LAN
19 septembre 2016, par JamesI’m trying to stream low latency audio between 2 raspberry pis. Both gstreamer and ffmpeg induce 2+ second delays for me.
I’ve played around with Jack Audio and locally on a single pi it seems promising. I can route mic input to a speaker locally and it is almost instantaneous.
However, I have been having trouble getting it to route between devices using Netjack.
# ON SERVER
jackd -P70 -p16 -t2000 -dalsa -dhw:1 -p128 -n3 -r44100 -s
# ON CLIENT
jackd -v -R -P70 -dnetone -i1 -o1 -I0 -O0 -r44100 -p128 -n3
# ON SERVER
jack_netsource -H < ip address of client >
jack_lsp # list availible connection ports
>system:capture_1
>system:playback_1
>system:playback_2
>netjack:capture_1
>netjack:capture_2
>netjack:capture_3
>netjack:playback_1
>netjack:playback_2
>netjack:playback_3
jack_connect system:capture_1 system:playback_1 # this works
jack_connect system:capture_1 netjack:playback_1 # this doesn't work :(Most of the launch options I pulled from here http://wiki.linuxaudio.org/wiki/raspberrypi#using_jack. I’ll be honest I don’t really know what they do.
The client jackd output shows messages like
Jack: data not valid
Jack: data not valid
Jack: JackSocketServerChannel::Execute : fPollTable i = 1 fd = 6
Jack: JackRequest::Notification
Jack: JackEngine::ClientNotify: no callback for notification = 3
Jack: JackEngine::ClientNotify: no callback for notification = 3
netxruns... duration: 139ms
Jack: JackSocketServerChannel::Execute : fPollTable i = 1 fd = 6
Jack: JackRequest::Notification
Jack: JackEngine::ClientNotify: no callback for notification = 3
Jack: JackEngine::ClientNotify: no callback for notification = 3And the server jack_netsource output looks like
current latency 114
current latency 20
current latency 27
current latency 29
current latency 48
current latency 23
current latency 33
current latency 28
current latency 41
current latency 84
current latency 44and the server jackd output looks like
JackAudioDriver::ProcessGraphAsyncMaster: Process error
JackAudioDriver::ProcessGraphAsyncMaster: Process error
JackAudioDriver::ProcessGraphAsyncMaster: Process error
JackAudioDriver::ProcessGraphAsyncMaster: Process error
JackEngine::XRun: client = netjack was not finished, state = Triggered
JackAudioDriver::ProcessGraphAsyncMaster: Process error
JackAudioDriver::ProcessGraphAsyncMaster: Process error
JackEngine::XRun: client = netjack was not finished, state = Triggered
JackEngine::XRun: client = netjack was not finished, state = TriggeredI believe the
-dnetoneflag indicates to use Netjack2. Netjack 1, which I’ve tried with the-dnetflag results in a singleNot Connectedmessage from jack_netsource and :Jack: CatchHost fd = 5 err = Resource temporarily unavailable
Jack: CatchHost fd = 5 err = Resource temporarily unavailable
Jack: CatchHost fd = 5 err = Resource temporarily unavailable
Jack: CatchHost fd = 5 err = Resource temporarily unavailable
Jack: CatchHost fd = 5 err = Resource temporarily unavailable
Jack: JackSocketServerChannel::Execute : fPollTable i = 1 fd = 6from the client jackd.
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How could I add an overlay to a video based on mouse cursor coordinates ?
5 mars 2023, par DimaI am making a web app, where the user clicks through some images while talking about them and pointing things out with the cursor. The audio, timestamps of image changes, and mouse cursor coordinates and times are sent to a php script which uses ffmpeg to make a slideshow from the images and audio.


Then it runs another ffmpeg command to overlay a moving image representing the cursor hundreds of times to mimic the user's mouse movements.


Here is an example command that inserts the mouse overlay :


ffmpeg \
 -i ../tmp/6400d9c21a62d.mp4 \
 -i ../assets/mouse-circle.png \
 -filter_complex "[0:v][1:v]overlay=enable='between=(t,0.627,0.874)':x=777.648+(t-0.627)*0.000/0.247:y=937.572+(t-0.627)*0.000/0.247[a1]; \
 [a1][1:v]overlay=enable='between=(t,0.874,0.914)':x=777.648+(t-0.874)*0.000/0.040:y=937.572+(t-0.874)*-1.223/0.040[a2]; \
 [a2][1:v]overlay=enable='between=(t,0.914,0.936)':x=777.648+(t-0.914)*0.000/0.022:y=936.349+(t-0.914)*0.000/0.022[a3]; \
 [a3][1:v]overlay=enable='between=(t,0.936,0.945)':x=777.648+(t-0.936)*0.000/0.009:y=936.349+(t-0.936)*-1.223/0.009[a4]; \
 [a4][1:v]overlay=enable='between=(t,0.945,0.966)':x=777.648+(t-0.945)*0.000/0.021:y=935.127+(t-0.945)*-1.223/0.021[a5]; \
 [a5][1:v]overlay=enable='between=(t,0.966,0.976)':x=777.648+(t-0.966)*0.000/0.010:y=933.904+(t-0.966)*-1.223/0.010[a6]; \
 [a6][1:v]overlay=enable='between=(t,0.976,0.999)':x=777.648+(t-0.976)*0.000/0.023:y=932.682+(t-0.976)*0.000/0.023[a7]; \
 [a7][1:v]overlay=enable='between=(t,0.999,1.019)':x=777.648+(t-0.999)*1.227/0.020:y=932.682+(t-0.999)*-1.223/0.020[a8]; \
 [a8][1:v]overlay=enable='between=(t,1.019,1.039)':x=778.875+(t-1.019)*0.000/0.020:y=931.459+(t-1.019)*-1.223/0.020[a9]; \
 [a9][1:v]overlay=enable='between=(t,1.039,1.091)':x=778.875+(t-1.039)*0.000/0.052:y=930.236+(t-1.039)*0.000/0.052[a10]; \
 [a10][1:v]overlay=enable='between=(t,1.091,1.142)':x=778.875+(t-1.091)*0.000/0.051:y=930.236+(t-1.091)*-1.223/0.051[a11]; \
 [a11][1:v]overlay=enable='between=(t,1.142,1.152)':x=778.875+(t-1.142)*0.000/0.010:y=929.014+(t-1.142)*-1.223/0.010[a12]; \
 [a12][1:v]overlay=enable='between=(t,1.152,1.161)':x=778.875+(t-1.152)*0.000/0.009:y=927.791+(t-1.152)*-1.223/0.009[a13]; \
 [a13][1:v]overlay=enable='between=(t,1.161,1.173)':x=778.875+(t-1.161)*2.454/0.012:y=926.569+(t-1.161)*-3.668/0.012[a14]; \
 [a14][1:v]overlay=enable='between=(t,1.173,1.184)':x=781.329+(t-1.173)*0.000/0.011:y=922.901+(t-1.173)*-8.558/0.011[a15]; \
 [a15][1:v]overlay=enable='between=(t,1.184,1.193)':x=781.329+(t-1.184)*0.000/0.009:y=914.343+(t-1.184)*-4.890/0.009[a16]; \
 [a16][1:v]overlay=enable='between=(t,1.193,1.203)':x=781.329+(t-1.193)*0.000/0.010:y=909.452+(t-1.193)*-3.668/0.010[a17]; \
 [a17][1:v]overlay=enable='between=(t,1.203,1.213)':x=781.329+(t-1.203)*0.000/0.010:y=905.784+(t-1.203)*-8.558/0.010[a18]; \
 [a18][1:v]overlay=enable='between=(t,1.213,1.223)':x=781.329+(t-1.213)*0.000/0.010:y=897.226+(t-1.213)*-4.890/0.010[a19]; \
 [a19][1:v]overlay=enable='between=(t,1.223,1.234)':x=781.329+(t-1.223)*0.000/0.011:y=892.336+(t-1.223)*-3.668/0.011[a20]; \
 [a20][1:v]overlay=enable='between=(t,1.234,1.246)':x=781.329+(t-1.234)*0.000/0.012:y=888.668+(t-1.234)*-8.558/0.012[a21]; \
 [a21][1:v]overlay=enable='between=(t,1.246,1.256)':x=781.329+(t-1.246)*0.000/0.010:y=880.110+(t-1.246)*-3.668/0.010[a22]; \
 [a22][1:v]overlay=enable='between=(t,1.256,1.265)':x=781.329+(t-1.256)*0.000/0.009:y=876.442+(t-1.256)*-4.890/0.009[a23]; \
 [a23][1:v]overlay=enable='between=(t,1.265,1.282)':x=781.329+(t-1.265)*0.000/0.017:y=871.551+(t-1.265)*-8.558/0.017[a24]; \
 [a24][1:v]overlay=enable='between=(t,1.282,1.298)':x=781.329+(t-1.282)*1.227/0.016:y=862.993+(t-1.282)*-8.558/0.016[a25]; \
 [a25][1:v]overlay=enable='between=(t,1.298,1.316)':x=782.556+(t-1.298)*0.000/0.018:y=854.435+(t-1.298)*-8.558/0.018[a26]; \
 [a26][1:v]overlay=enable='between=(t,1.316,1.331)':x=782.556+(t-1.316)*2.454/0.015:y=845.877+(t-1.316)*-8.558/0.015[a27]; \
 [a27][1:v]overlay=enable='between=(t,1.331,1.349)':x=785.010+(t-1.331)*0.000/0.018:y=837.318+(t-1.331)*-3.668/0.018[a28]; \
 [a28][1:v]overlay=enable='between=(t,1.349,1.365)':x=785.010+(t-1.349)*2.454/0.016:y=833.651+(t-1.349)*-13.449/0.016[a29]; \
 [a29][1:v]overlay=enable='between=(t,1.365,1.382)':x=787.464+(t-1.365)*3.681/0.017:y=820.202+(t-1.365)*-13.449/0.017[a30]; \
 [a30][1:v]overlay=enable='between=(t,1.382,1.399)':x=791.145+(t-1.382)*0.000/0.017:y=806.753+(t-1.382)*-8.558/0.017[a31]; \
 [a31][1:v]overlay=enable='between=(t,1.399,1.415)':x=791.145+(t-1.399)*4.908/0.016:y=798.195+(t-1.399)*-13.449/0.016[a32]; \
 [a32][1:v]overlay=enable='between=(t,1.415,1.433)':x=796.053+(t-1.415)*2.454/0.018:y=784.746+(t-1.415)*-17.116/0.018[a33]; \
 [a33][1:v]overlay=enable='between=(t,1.433,1.449)':x=798.507+(t-1.433)*3.681/0.016:y=767.630+(t-1.433)*-8.558/0.016[a34]; \
 [a34][1:v]overlay=enable='between=(t,1.449,1.466)':x=802.188+(t-1.449)*6.135/0.017:y=759.072+(t-1.449)*-18.339/0.017[a35]; \
 [a35][1:v]overlay=enable='between=(t,1.466,1.482)':x=808.323+(t-1.466)*2.454/0.016:y=740.733+(t-1.466)*-8.558/0.016[a36]; \
 [a36][1:v]overlay=enable='between=(t,1.482,1.499)':x=810.777+(t-1.482)*6.135/0.017:y=732.174+(t-1.482)*-18.339/0.017[a37]; \
 [a37][1:v]overlay=enable='between=(t,1.499,1.516)':x=816.912+(t-1.499)*8.589/0.017:y=713.835+(t-1.499)*-14.671/0.017[a38]; \
 [a38][1:v]overlay=enable='between=(t,1.516,1.532)':x=825.501+(t-1.516)*3.681/0.016:y=699.164+(t-1.516)*-8.558/0.016[a39]; \
 [a39][1:v]overlay=enable='between=(t,1.532,1.549)':x=829.181+(t-1.532)*4.908/0.017:y=690.606+(t-1.532)*-13.449/0.017[a40]; \
 [a40][1:v]overlay=enable='between=(t,1.549,1.565)':x=834.089+(t-1.549)*8.589/0.016:y=677.157+(t-1.549)*-14.671/0.016[a41]; \
 [a41][1:v]overlay=enable='between=(t,1.565,1.583)':x=842.678+(t-1.565)*2.454/0.018:y=662.486+(t-1.565)*-8.558/0.018[a42]; \
 [a42][1:v]overlay=enable='between=(t,1.583,1.599)':x=845.132+(t-1.583)*8.589/0.016:y=653.928+(t-1.583)*-14.671/0.016[a43]; \
 [a43][1:v]overlay=enable='between=(t,1.599,1.616)':x=853.721+(t-1.599)*2.454/0.017:y=639.257+(t-1.599)*-4.890/0.017[a44]; \
 [a44][1:v]overlay=enable='between=(t,1.616,1.632)':x=856.175+(t-1.616)*9.816/0.016:y=634.366+(t-1.616)*-18.339/0.016[a45]; \
 [a45][1:v]overlay=enable='between=(t,1.632,1.649)':x=865.991+(t-1.632)*8.589/0.017:y=616.027+(t-1.632)*-14.671/0.017[a46]; \
 [a46][1:v]overlay=enable='between=(t,1.649,1.666)':x=874.580+(t-1.649)*6.135/0.017:y=601.356+(t-1.649)*-9.781/0.017[a47]; \
 [a47][1:v]overlay=enable='between=(t,1.666,1.682)':x=880.715+(t-1.666)*8.589/0.016:y=591.575+(t-1.666)*-14.671/0.016[a48]; \
 [a48][1:v]overlay=enable='between=(t,1.682,1.699)':x=889.303+(t-1.682)*8.589/0.017:y=576.904+(t-1.682)*-14.671/0.017[a49]; \
 [a49][1:v]overlay=enable='between=(t,1.699,1.716)':x=897.892+(t-1.699)*6.135/0.017:y=562.232+(t-1.699)*-4.890/0.017[a50]; \
 [a50][1:v]overlay=enable='between=(t,1.716,1.732)':x=904.027+(t-1.716)*8.589/0.016:y=557.342+(t-1.716)*-14.671/0.016[a51]; \
 [a51][1:v]overlay=enable='between=(t,1.732,1.749)':x=912.616+(t-1.732)*7.362/0.017:y=542.671+(t-1.732)*-9.781/0.017[a52]; \
 [a52][1:v]overlay=enable='between=(t,1.749,1.766)':x=919.978+(t-1.749)*8.589/0.017:y=532.890+(t-1.749)*-14.671/0.017[a53]; \
 [a53][1:v]overlay=enable='between=(t,1.766,1.782)':x=928.567+(t-1.766)*4.908/0.016:y=518.219+(t-1.766)*-4.890/0.016[a54]; \
 [a54][1:v]overlay=enable='between=(t,1.782,1.799)':x=933.475+(t-1.782)*8.589/0.017:y=513.328+(t-1.782)*-11.003/0.017[a55]; \
 [a55][1:v]overlay=enable='between=(t,1.799,1.815)':x=942.063+(t-1.799)*7.362/0.016:y=502.325+(t-1.799)*-9.781/0.016[a56]; \
 [a56][1:v]overlay=enable='between=(t,1.815,1.832)':x=949.425+(t-1.815)*6.135/0.017:y=492.544+(t-1.815)*-4.890/0.017[a57]; \
 [a57][1:v]overlay=enable='between=(t,1.832,1.849)':x=955.560+(t-1.832)*6.135/0.017:y=487.654+(t-1.832)*-7.336/0.017[a58]; \
 [a58][1:v]overlay=enable='between=(t,1.849,1.866)':x=961.695+(t-1.849)*6.135/0.017:y=480.318+(t-1.849)*-3.668/0.017[a59]; \
 [a59][1:v]overlay=enable='between=(t,1.866,1.883)':x=967.830+(t-1.866)*1.227/0.017:y=476.650+(t-1.866)*-1.223/0.017[a60]; \
 [a60][1:v]overlay=enable='between=(t,1.883,1.900)':x=969.057+(t-1.883)*8.589/0.017:y=475.427+(t-1.883)*-2.445/0.017[a61]; \
 [a61][1:v]overlay=enable='between=(t,1.900,1.916)':x=977.646+(t-1.900)*6.135/0.016:y=472.982+(t-1.900)*-1.223/0.016[a62]; \
 [a62][1:v]overlay=enable='between=(t,1.916,1.933)':x=983.781+(t-1.916)*1.227/0.017:y=471.760+(t-1.916)*0.000/0.017[a63]; \
 [a63][1:v]overlay=enable='between=(t,1.933,1.949)':x=985.008+(t-1.933)*1.227/0.016:y=471.760+(t-1.933)*0.000/0.016[a64]; \
 [a64][1:v]overlay=enable='between=(t,1.949,1.966)':x=986.235+(t-1.949)*1.227/0.017:y=471.760+(t-1.949)*0.000/0.017[a65]; \
 [a65][1:v]overlay=enable='between=(t,1.966,1.983)':x=987.462+(t-1.966)*2.454/0.017:y=471.760+(t-1.966)*0.000/0.017[a66]; \
 [a66][1:v]overlay=enable='between=(t,1.983,2.000)':x=989.916+(t-1.983)*0.000/0.017:y=471.760+(t-1.983)*0.000/0.017[a67]; \
 [a67][1:v]overlay=enable='between=(t,2.000,2.016)':x=989.916+(t-2.000)*0.000/0.016:y=471.760+(t-2.000)*1.223/0.016[a68]; \
 [a68][1:v]overlay=enable='between=(t,2.016,2.033)':x=989.916+(t-2.016)*2.454/0.017:y=472.982+(t-2.016)*2.445/0.017[a69]; \
 [a69][1:v]overlay=enable='between=(t,2.033,2.050)':x=992.370+(t-2.033)*0.000/0.017:y=475.427+(t-2.033)*1.223/0.017[a70]; \
 [a70][1:v]overlay=enable='between=(t,2.050,2.066)':x=992.370+(t-2.050)*2.454/0.016:y=476.650+(t-2.050)*8.558/0.016[a71]; \
 [a71][1:v]overlay=enable='between=(t,2.066,2.082)':x=994.824+(t-2.066)*0.000/0.016:y=485.208+(t-2.066)*7.336/0.016[a72]; \
 [a72][1:v]overlay=enable='between=(t,2.082,2.100)':x=994.824+(t-2.082)*0.000/0.018:y=492.544+(t-2.082)*4.890/0.018[a73]; \
 [a73][1:v]overlay=enable='between=(t,2.100,2.116)':x=994.824+(t-2.100)*3.681/0.016:y=497.434+(t-2.100)*13.449/0.016[a74]; \
 [a74][1:v]overlay=enable='between=(t,2.116,2.134)':x=998.504+(t-2.116)*0.000/0.018:y=510.883+(t-2.116)*7.336/0.018[a75]; \
 [a75][1:v]overlay=enable='between=(t,2.134,2.150)':x=998.504+(t-2.134)*0.000/0.016:y=518.219+(t-2.134)*8.558/0.016[a76]; \
 [a76][1:v]overlay=enable='between=(t,2.150,2.167)':x=998.504+(t-2.150)*0.000/0.017:y=526.777+(t-2.150)*17.116/0.017[a77]; \
 [a77][1:v]overlay=enable='between=(t,2.167,2.183)':x=998.504+(t-2.167)*-7.362/0.016:y=543.893+(t-2.167)*24.452/0.016[a78]; \
 [a78][1:v]overlay=enable='between=(t,2.183,2.200)':x=991.143+(t-2.183)*0.000/0.017:y=568.345+(t-2.183)*8.558/0.017[a79]; \
 [a79][1:v]overlay=enable='between=(t,2.200,2.217)':x=991.143+(t-2.200)*-6.135/0.017:y=576.904+(t-2.200)*23.229/0.017[a80]; \
 [a80][1:v]overlay=enable='between=(t,2.217,2.233)':x=985.008+(t-2.217)*-3.681/0.016:y=600.133+(t-2.217)*14.671/0.016[a81]; \
 [a81][1:v]overlay=enable='between=(t,2.233,2.251)':x=981.327+(t-2.233)*-12.270/0.018:y=614.804+(t-2.233)*36.678/0.018[a82]; \
 [a82][1:v]overlay=enable='between=(t,2.251,2.267)':x=969.057+(t-2.251)*-3.681/0.016:y=651.483+(t-2.251)*14.671/0.016[a83]; \
 [a83][1:v]overlay=enable='between=(t,2.267,2.284)':x=965.376+(t-2.267)*-12.270/0.017:y=666.154+(t-2.267)*36.678/0.017[a84]; \
 [a84][1:v]overlay=enable='between=(t,2.284,2.301)':x=953.106+(t-2.284)*-15.951/0.017:y=702.832+(t-2.284)*31.788/0.017[a85]; \
 [a85][1:v]overlay=enable='between=(t,2.301,2.317)':x=937.156+(t-2.301)*-7.362/0.016:y=734.620+(t-2.301)*14.671/0.016[a86]; \
 [a86][1:v]overlay=enable='between=(t,2.317,2.334)':x=929.794+(t-2.317)*-14.724/0.017:y=749.291+(t-2.317)*25.675/0.017[a87]; \
 [a87][1:v]overlay=enable='between=(t,2.334,2.350)':x=915.070+(t-2.334)*-7.362/0.016:y=774.966+(t-2.334)*15.894/0.016[a88]; \
 [a88][1:v]overlay=enable='between=(t,2.350,2.367)':x=907.708+(t-2.350)*-14.724/0.017:y=790.859+(t-2.350)*25.675/0.017[a89]; \
 [a89][1:v]overlay=enable='between=(t,2.367,2.384)':x=892.984+(t-2.367)*-18.405/0.017:y=816.534+(t-2.367)*20.784/0.017[a90]; \
 [a90][1:v]overlay=enable='between=(t,2.384,2.400)':x=874.580+(t-2.384)*-6.135/0.016:y=837.318+(t-2.384)*11.003/0.016[a91]; \
 [a91][1:v]overlay=enable='between=(t,2.400,2.418)':x=868.445+(t-2.400)*-11.043/0.018:y=848.322+(t-2.400)*9.781/0.018[a92]; \
 [a92][1:v]overlay=enable='between=(t,2.418,2.434)':x=857.402+(t-2.418)*-9.816/0.016:y=858.103+(t-2.418)*8.558/0.016[a93]; \
 [a93][1:v]overlay=enable='between=(t,2.434,2.451)':x=847.586+(t-2.434)*-6.135/0.017:y=866.661+(t-2.434)*4.890/0.017[a94]; \
 [a94][1:v]overlay=enable='between=(t,2.451,2.467)':x=841.451+(t-2.451)*-8.589/0.016:y=871.551+(t-2.451)*4.890/0.016[a95]; \
 [a95][1:v]overlay=enable='between=(t,2.467,2.484)':x=832.862+(t-2.467)*-1.227/0.017:y=876.442+(t-2.467)*1.223/0.017[a96]; \
 [a96][1:v]overlay=enable='between=(t,2.484,2.501)':x=831.635+(t-2.484)*-6.135/0.017:y=877.664+(t-2.484)*3.668/0.017[a97]; \
 [a97][1:v]overlay=enable='between=(t,2.501,2.517)':x=825.501+(t-2.501)*-8.589/0.016:y=881.332+(t-2.501)*2.445/0.016[a98]; \
 [a98][1:v]overlay=enable='between=(t,2.517,2.535)':x=816.912+(t-2.517)*-2.454/0.018:y=883.777+(t-2.517)*1.223/0.018[a99]; \
 [a99][1:v]overlay=enable='between=(t,2.535,2.551)':x=814.458+(t-2.535)*-2.454/0.016:y=885.000+(t-2.535)*2.445/0.016[a100]; \
 [a100][1:v]overlay=enable='between=(t,2.551,2.567)':x=812.004+(t-2.551)*-1.227/0.016:y=887.445+(t-2.551)*0.000/0.016[a101]; \
 [a101][1:v]overlay=enable='between=(t,2.567,2.584)':x=810.777+(t-2.567)*-1.227/0.017:y=887.445+(t-2.567)*0.000/0.017[a102]; \
 [a102][1:v]overlay=enable='between=(t,2.584,2.600)':x=809.550+(t-2.584)*0.000/0.016:y=887.445+(t-2.584)*0.000/0.016[a103]; \
 [a103][1:v]overlay=enable='between=(t,2.600,2.617)':x=809.550+(t-2.600)*-1.227/0.017:y=887.445+(t-2.600)*0.000/0.017[a104]; \
 [a104][1:v]overlay=enable='between=(t,2.617,2.689)':x=808.323+(t-2.617)*0.000/0.072:y=887.445+(t-2.617)*0.000/0.072[a105] \
 \
 " -map "[a105]" -map 0:a:? ../tmp/vid-6400d9c21a62d.mp4 -y


And this is just from a four second video. When I tried to do thirty seconds worth of mouse movements, the command would not even run because there were too many arguments. So I need to come up with another way to add a mouse overlay.


An obvious choice would just be screen recording the user's screen to not have to add a mouse overlay because it would already be there. But then I don't think I can use full resolution pictures in the final video. It will be recordings of the images at whatever resolution the user's screen is set to. (Unless there's a way around this that I don't know about.)


So how could I take a long list of mouse coordinates and timestamps and add an overlay representing a cursor to an existing video ?


Edit : I tried putting everything from the
filter-complexargument into a text file and calling it withfilter_complex_scriptinstead, as @БаярГончикжапов suggested in comments. Now it at least starts to run, but every time fails with this error :

[Parsed_overlay_1553 @ 0x55caae67f900] [framesync @ 0x55caae6802a8] Sync level 2
[auto_scale_1554 @ 0x55cab4b34b80] Failed to configure output pad on auto_scale_1554
Error reinitializing filters!
Failed to inject frame into filter network: Resource temporarily unavailable
Error while processing the decoded data for stream #1:0
[AVIOContext @ 0x55cab451c900] Statistics: 0 bytes written, 0 seeks, 0 writeouts
[aac @ 0x55cab4523b80] Qavg: 25282.062
[aac @ 0x55cab4523b80] 2 frames left in the queue on closing


It only happens if there are more than 1553 arguments, and changing the arguments for 1553 and surrounding ones doesn't stop the error.


-
What permission ffmpeg-static need in AWS Lambda ?
17 février 2023, par JánosI have this code. It download a image, made a video from it and upload it to S3. It runs on Lambda. Added packages, intalled, zipped, uploaded.


npm install --production
zip -r my-lambda-function.zip ./


But get an
error code 126

2023-02-17T09:27:55.236Z 5c845bb6-02c1-41b0-8759-4459591b57b0 INFO Error: ffmpeg exited with code 126
 at ChildProcess.<anonymous> (/var/task/node_modules/fluent-ffmpeg/lib/processor.js:182:22)
 at ChildProcess.emit (node:events:513:28)
 at ChildProcess._handle.onexit (node:internal/child_process:291:12)
2023-02-17T09:27:55.236Z 5c845bb6-02c1-41b0-8759-4459591b57b0 INFO Error: ffmpeg exited with code 126 at ChildProcess.<anonymous> (/var/task/node_modules/fluent-ffmpeg/lib/processor.js:182:22) at ChildProcess.emit (node:events:513:28) at ChildProcess._handle.onexit (node:internal/child_process:291:12)
</anonymous></anonymous>

Do I need to set a specific premission for ffmpeg ?


import { PutObjectCommand, S3Client } from '@aws-sdk/client-s3'
import { fromNodeProviderChain } from '@aws-sdk/credential-providers'
import axios from 'axios'
import pathToFfmpeg from 'ffmpeg-static'
import ffmpeg from 'fluent-ffmpeg'
import fs from 'fs'
ffmpeg.setFfmpegPath(pathToFfmpeg)
const credentials = fromNodeProviderChain({
 clientConfig: {
 region: 'eu-central-1',
 },
})
const client = new S3Client({ credentials })

export const handler = async (event, context) => {
 try {
 let body
 let statusCode = 200
 const query = event?.queryStringParameters
 if (!query?.imgId && !query?.video1Id && !query?.video2Id) {
 return
 }

 const imgId = query?.imgId
 const video1Id = query?.video1Id
 const video2Id = query?.video2Id
 console.log(
 `Parameters received, imgId: ${imgId}, video1Id: ${video1Id}, video2Id: ${video2Id}`
 )
 const imgURL = getFileURL(imgId)
 const video1URL = getFileURL(`${video1Id}.mp4`)
 const video2URL = getFileURL(`${video2Id}.mp4`)
 const imagePath = `/tmp/${imgId}`
 const video1Path = `/tmp/${video1Id}.mp4`
 const video2Path = `/tmp/${video2Id}.mp4`
 const outputPath = `/tmp/${imgId}.mp4`
 await Promise.all([
 downloadFile(imgURL, imagePath),
 downloadFile(video1URL, video1Path),
 downloadFile(video2URL, video2Path),
 ])
 await new Promise((resolve, reject) => {
 console.log('Input files downloaded')
 ffmpeg()
 .input(imagePath)
 .inputFormat('image2')
 .inputFPS(30)
 .loop(1)
 .size('1080x1080')
 .videoCodec('libx264')
 .format('mp4')
 .outputOptions([
 '-tune animation',
 '-pix_fmt yuv420p',
 '-profile:v baseline',
 '-level 3.0',
 '-preset medium',
 '-crf 23',
 '-movflags +faststart',
 '-y',
 ])
 .output(outputPath)
 .on('end', () => {
 console.log('Output file generated')
 resolve()
 })
 .on('error', (e) => {
 console.log(e)
 reject()
 })
 .run()
 
 })
 await uploadFile(outputPath, imgId + '.mp4')
 .then((url) => {
 body = JSON.stringify({
 url,
 })
 })
 .catch((error) => {
 console.error(error)
 statusCode = 400
 body = error?.message ?? error
 })
 console.log(`File uploaded to S3`)
 const headers = {
 'Content-Type': 'application/json',
 'Access-Control-Allow-Headers': 'Content-Type',
 'Access-Control-Allow-Origin': 'https://tikex.com, https://borespiac.hu',
 'Access-Control-Allow-Methods': 'GET',
 }
 return {
 statusCode,
 body,
 headers,
 }
 } catch (error) {
 console.error(error)
 return {
 statusCode: 500,
 body: JSON.stringify('Error fetching data'),
 }
 }
}

const downloadFile = async (url, path) => {
 try {
 console.log(`Download will start: ${url}`)
 const response = await axios(url, {
 responseType: 'stream',
 })
 if (response.status !== 200) {
 throw new Error(
 `Failed to download file, status code: ${response.status}`
 )
 }
 response.data
 .pipe(fs.createWriteStream(path))
 .on('finish', () => console.log(`File downloaded to ${path}`))
 .on('error', (e) => {
 throw new Error(`Failed to save file: ${e}`)
 })
 } catch (e) {
 console.error(`Error downloading file: ${e}`)
 }
}
const uploadFile = async (path, id) => {
 const buffer = fs.readFileSync(path)
 const params = {
 Bucket: 't44-post-cover',
 ACL: 'public-read',
 Key: id,
 ContentType: 'video/mp4',
 Body: buffer,
 }
 await client.send(new PutObjectCommand(params))
 return getFileURL(id)
}
const getFileURL = (id) => {
 const bucket = 't44-post-cover'
 const url = `https://${bucket}.s3.eu-central-1.amazonaws.com/${id}`
 return url
}


Added
AWSLambdaBasicExecutionRole-16e770c8-05fa-4c42-9819-12c468cb5b49permission, with policy :

{
 "Version": "2012-10-17",
 "Statement": [
 {
 "Effect": "Allow",
 "Action": "logs:CreateLogGroup",
 "Resource": "arn:aws:logs:eu-central-1:634617701827:*"
 },
 {
 "Effect": "Allow",
 "Action": [
 "logs:CreateLogStream",
 "logs:PutLogEvents"
 ],
 "Resource": [
 "arn:aws:logs:eu-central-1:634617701827:log-group:/aws/lambda/promo-video-composer-2:*"
 ]
 },
 {
 "Effect": "Allow",
 "Action": [
 "s3:GetObject",
 "s3:PutObject",
 "s3:ListBucket"
 ],
 "Resource": [
 "arn:aws:s3:::example-bucket",
 "arn:aws:s3:::example-bucket/*"
 ]
 },
 {
 "Effect": "Allow",
 "Action": [
 "logs:CreateLogGroup",
 "logs:CreateLogStream",
 "logs:PutLogEvents"
 ],
 "Resource": [
 "arn:aws:logs:*:*:*"
 ]
 },
 {
 "Effect": "Allow",
 "Action": [
 "ec2:DescribeNetworkInterfaces"
 ],
 "Resource": [
 "*"
 ]
 },
 {
 "Effect": "Allow",
 "Action": [
 "sns:*"
 ],
 "Resource": [
 "*"
 ]
 },
 {
 "Effect": "Allow",
 "Action": [
 "cloudwatch:*"
 ],
 "Resource": [
 "*"
 ]
 },
 {
 "Effect": "Allow",
 "Action": [
 "kms:Decrypt"
 ],
 "Resource": [
 "*"
 ]
 }
 ]
}


What do I miss ?


janoskukoda@Janoss-MacBook-Pro promo-video-composer-2 % ls -l $(which ffmpeg)
lrwxr-xr-x 1 janoskukoda admin 35 Feb 10 12:50 /opt/homebrew/bin/ffmpeg -> ../Cellar/ffmpeg/5.1.2_4/bin/ffmpeg


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