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Autres articles (96)
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MediaSPIP 0.1 Beta version
25 avril 2011, parMediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
The zip file provided here only contains the sources of MediaSPIP in its standalone version.
To get a working installation, you must manually install all-software dependencies on the server.
If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...) -
Keeping control of your media in your hands
13 avril 2011, parThe vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...) -
La sauvegarde automatique de canaux SPIP
1er avril 2010, parDans le cadre de la mise en place d’une plateforme ouverte, il est important pour les hébergeurs de pouvoir disposer de sauvegardes assez régulières pour parer à tout problème éventuel.
Pour réaliser cette tâche on se base sur deux plugins SPIP : Saveauto qui permet une sauvegarde régulière de la base de donnée sous la forme d’un dump mysql (utilisable dans phpmyadmin) mes_fichiers_2 qui permet de réaliser une archive au format zip des données importantes du site (les documents, les éléments (...)
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Piwik and Piwik PRO featured in VentureBeat Insight as “an obvious solution” for web analytics
7 avril 2015, par Piwik Core Team — AboutWe are proud to see Piwik and Piwik PRO featured in the recent report published by VentureBeat Insight. Published at the end of March 2015, Conversion Rate Optimisation : how to win at performance marketing was based on surveys of almost 3000 CRO tools users.
Piwik earned a perfect score of 100 out of 100 for website analytics and was featured as an “obvious solution” for those who prefer to use open source products. The report also pointed out a very low abandonment rate of Piwik by its users, despite its growing popularity (3%).
You can preview the “Conversion Rate Optimisation : how to win at performance marketing” report for free here
(Note : there is a form to fill in before you can access it).View other awards won by Piwik here.
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How to record output frames to a video file in OpenFrameworks OF 0.8.4 OSX
7 mai 2015, par benjgormanHi I’m attempting to use this to record output of my openframeworks app.
I was trying to use this extension here. As there seems like there is no built in method for this.
https://github.com/timscaffidi/ofxVideoRecorder
I have it producing a video file, but it looks like one of those scrolling sidewalk adverts, the frames scroll upwards instead of proceeding like a normal video. Any idea why ?
I had this at the end of my setup method.
if(!vidRecorder.isInitialized())
{
vidRecorder.setup(fileName+ofGetTimestampString()+fileExt, ofGetWidth(), ofGetHeight(), 30); // no audio
}Now I had the window mode set to fullscreen intitially and that gave me scanlines on the output, so I made it not full screen and I got the frames I already mentioned and then I set it to 640, 480 and I got more scanlines.
I was using this code in my update loop
ofImage img;
img.grabScreen(0, 0, ofGetWidth(), ofGetHeight());
vidRecorder.addFrame(img.getPixelsRef());Here is the ffmpeg output.
[warning] ofThread: - name: Thread 4 - Calling startThread with verbose is deprecated.
[warning] ofThread: - name: Thread 2 - Calling startThread with verbose is deprecated.
ffmpeg version 2.6.1 Copyright (c) 2000-2015 the FFmpeg developers
built with llvm-gcc 4.2.1 (LLVM build 2336.11.00)
configuration: --prefix=/Volumes/Ramdisk/sw --enable-gpl --enable-pthreads --enable-version3 --enable-libspeex --enable-libvpx --disable-decoder=libvpx --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-avfilter --enable-libopencore_amrwb --enable-libopencore_amrnb --enable-filters --enable-libgsm --enable-libvidstab --enable-libx265 --disable-doc --arch=x86_64 --enable-runtime-cpudetect
libavutil 54. 20.100 / 54. 20.100
libavcodec 56. 26.100 / 56. 26.100
libavformat 56. 25.101 / 56. 25.101
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 11.102 / 5. 11.102
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 3.100 / 53. 3.100
Input #0, rawvideo, from '/Users/benjgorman/Code/OF_ROOT/addons/ofxTimeline/duplicate_lips/bin/data/ofxvrpipe0':
Duration: N/A, start: 0.000000, bitrate: 566231 kb/s
Stream #0:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 1024x768, 566231 kb/s, 30 tbr, 30 tbn, 30 tbc
Please use -b:a or -b:v, -b is ambiguous
Output #0, mov, to '/Users/benjgorman/Code/OF_ROOT/addons/ofxTimeline/duplicate_lips/bin/data/testMovie2015-04-16-11-21-31-504.mov':
Metadata:
encoder : Lavf56.25.101
Stream #0:0: Video: mpeg4 (mp4v / 0x7634706D), yuv420p, 1024x768, q=2-31, 800 kb/s, 30 fps, 15360 tbn, 30 tbc
Metadata:
encoder : Lavc56.26.100 mpeg4
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo (native) -> mpeg4 (native))
Press [q] to stop, [?] for help
frame= 9 fps=0.0 q=14.2 size= 861kB time=00:00:00.30 bitrate=23510.3kbits/s
frame= 19 fps= 18 q=24.8 size= 1330kB time=00:00:00.63 bitrate=17202.4kbits/s
frame= 31 fps= 20 q=24.8 size= 1864kB time=00:00:01.03//
more frames here omitted for clarity
//
frame= 87 fps= 16 q=24.8 size= 4349kB time=00:00:02.90 bitrate=12286.0kbits/s
frame= 95 fps= 16 q=24.8 size= 4704kB time=00:00:03.16 bitrate=12169.1kbits/s
frame= 103 fps= 16 q=24.8 size= 5061kB time=00:00:03.43 bitrate=12075.1kbits/s
frame= 111 fps= 16 q=24.8 size= 5415kB time=00:00:03.70 bitrate=11990.0kbits/s
frame= 118 fps= 15 q=24.8 size= 5726kB time=00:00:03.93 bitrate=11925.3kbits/s
frame= 130 fps= 16 q=24.8 size= 6261kB time=00:00:04.33 bitrate=11835.3kbits/s
[rawvideo @ 0x10201e000] Invalid buffer size, packet size 1179648 < expected frame_size 2359296
Error while decoding stream #0:0: Invalid argument
frame= 138 fps= 14 q=24.8 size= 6618kB time=00:00:04.60 bitrate=11785.4kbits/s
frame= 138 fps= 14 q=24.8 Lsize= 6620kB time=00:00:04.60 bitrate=11788.8kbits/s
video:6618kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.028923%Is this an ffmpeg error ? Or is there a better solution.
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FFMPEG crash while cropping video
18 octobre 2022, par Khawar RazaI am using FFMPEG to crop a video. I am using ffmpeg-kit as a ffmpeg wrapper in my android app where the user can select any output size irrespective of the original video aspect ratio. Below is the problematic command :


-i "/storage/emulated/0/Download/83a2f6_1080p~2.mp4" -filter_complex "[0:v]crop=304:236:2:2[cropped]" -map "[cropped]" "/storage/emulated/0/DCIM/appname/vid_d8ee328d-ec7a-468b-9313-4561dceea33e.mp4"


When the execution starts, the application crashes.


Logs :


I/ffmpeg-kit: Loading ffmpeg-kit.
I/ffmpeg-kit: Loaded ffmpeg-kit-min-gpl-arm64-v8a-4.5.1-20220101.
D/ffmpeg-kit: Async callback block started.
D/VideoEditor: ffmpeg version v4.5-dev-3393-g30322ebe3c
D/VideoEditor: Copyright (c) 2000-2021 the FFmpeg developers
D/VideoEditor: 
D/VideoEditor: built with Android (7155654, based on r399163b1) clang version 11.0.5 (https://android.googlesource.com/toolchain/llvm-project 87f1315dfbea7c137aa2e6d362dbb457e388158d)
D/VideoEditor: configuration: --cross-prefix=aarch64-linux-android- --sysroot=/files/android-sdk/ndk/22.1.7171670/toolchains/llvm/prebuilt/linux-x86_64/sysroot --prefix=/storage/light/projects/ffmpeg-kit/prebuilt/android-arm64/ffmpeg --pkg-config=/usr/bin/pkg-config --enable-version3 --arch=aarch64 --cpu=armv8-a --target-os=android --enable-neon --enable-asm --enable-inline-asm --ar=aarch64-linux-android-ar --cc=aarch64-linux-android24-clang --cxx=aarch64-linux-android24-clang++ --ranlib=aarch64-linux-android-ranlib --strip=aarch64-linux-android-strip --nm=aarch64-linux-android-nm --extra-libs='-L/storage/light/projects/ffmpeg-kit/prebuilt/android-arm64/cpu-features/lib -lndk_compat' --disable-autodetect --enable-cross-compile --enable-pic --enable-jni --enable-optimizations --enable-swscale --disable-static --enable-shared --enable-pthreads --enable-v4l2-m2m --disable-outdev=fbdev --disable-indev=fbdev --enable-small --disable-xmm-clobber-test --disable-debug --enable-lto --disable-neon-clobber-test --disable-programs --disable-postproc --disable-doc --disable-htmlpages --disable-manpages --disable-podpages --disable-txtpages --disable-sndio --disable-schannel --disable-securetransport --disable-xlib --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --disable-videotoolbox --disable-audiotoolbox --disable-appkit --disable-alsa --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --enable-libx264 --enable-libxvid --enable-libx265 --enable-libvidstab --disable-sdl2 --disable-openssl --enable-zlib --enable-mediacodec --enable-gpl
D/VideoEditor: libavutil 57. 13.100 / 57. 13.100
D/VideoEditor: libavcodec 59. 15.102 / 59. 15.102
D/VideoEditor: libavformat 59. 10.100 / 59. 10.100
D/VideoEditor: libavdevice 59. 1.100 / 59. 1.100
D/VideoEditor: libavfilter 8. 21.100 / 8. 21.100
D/VideoEditor: libswscale 6. 1.102 / 6. 1.102
D/VideoEditor: libswresample 4. 0.100 / 4. 0.100
D/VideoEditor: Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/Download/83a2f6_1080p~2.mp4':
D/VideoEditor: Metadata:
D/VideoEditor: major_brand : 
D/VideoEditor: mp42
D/VideoEditor: 
D/VideoEditor: minor_version : 
D/VideoEditor: 0
D/VideoEditor: 
D/VideoEditor: compatible_brands: 
D/VideoEditor: isommp42
D/VideoEditor: 
D/VideoEditor: com.android.version: 
D/VideoEditor: 12
D/VideoEditor: 
D/VideoEditor: Duration: 
D/VideoEditor: 00:02:18.11
D/VideoEditor: , start: 
D/VideoEditor: 0.000000
D/VideoEditor: , bitrate: 
D/VideoEditor: 1929 kb/s
D/VideoEditor: 
D/VideoEditor: Stream #0:0
D/VideoEditor: [0x1]
D/VideoEditor: (eng)
D/VideoEditor: : Video: h264 (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1080x808, 1864 kb/s
D/VideoEditor: , 
D/VideoEditor: 18 fps, 
D/VideoEditor: 18 tbr, 
D/VideoEditor: 90k tbn
D/VideoEditor: (default)
D/VideoEditor: 
D/VideoEditor: Metadata:
D/VideoEditor: creation_time : 
D/VideoEditor: 2022-10-06T11:47:07.000000Z
D/VideoEditor: 
D/VideoEditor: handler_name : 
D/VideoEditor: VideoHandle
D/VideoEditor: 
D/VideoEditor: vendor_id : 
D/VideoEditor: [0][0][0][0]
D/VideoEditor: 
D/VideoEditor: Stream #0:1
D/VideoEditor: [0x2]
D/VideoEditor: (und)
D/VideoEditor: : Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 64 kb/s
D/VideoEditor: (default)
D/VideoEditor: 
D/VideoEditor: Metadata:
D/VideoEditor: creation_time : 
D/VideoEditor: 2022-10-06T11:47:07.000000Z
D/VideoEditor: 
D/VideoEditor: handler_name : 
D/VideoEditor: SoundHandle
D/VideoEditor: 
D/VideoEditor: vendor_id : 
D/VideoEditor: [0][0][0][0]
D/VideoEditor: 


D/VideoEditor: [h264 @ 0x7654fe8500] The "sub_text_format" option is deprecated: Deprecated, does nothing
D/VideoEditor: Stream mapping:
D/VideoEditor: Stream #0:0 (h264) -> crop
D/VideoEditor: 
D/VideoEditor: crop
D/VideoEditor: -> Stream #0:0 (libx264)
D/VideoEditor: Press [q] to stop, [?] for help


D/VideoEditor: [libx264 @ 0x7654fb9af0] using cpu capabilities: ARMv8 NEON
D/VideoEditor: [libx264 @ 0x7654fb9af0] profile High, level 1.2, 4:2:0, 8-bit
D/VideoEditor: [libx264 @ 0x7654fb9af0] 264 - core 163 - H.264/MPEG-4 AVC codec - Copyleft 2003-2021 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=7 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=18 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
D/VideoEditor: Output #0, mp4, to '/storage/emulated/0/DCIM/appname/vid_d8ee328d-ec7a-468b-9313-4561dceea33e.mp4':
D/VideoEditor: Metadata:
D/VideoEditor: major_brand : 
D/VideoEditor: mp42
D/VideoEditor: 
D/VideoEditor: minor_version : 
D/VideoEditor: 0
D/VideoEditor: 
D/VideoEditor: compatible_brands: 
D/VideoEditor: isommp42
D/VideoEditor: 
D/VideoEditor: com.android.version: 
D/VideoEditor: 12
D/VideoEditor: 
D/VideoEditor: encoder : 
D/VideoEditor: Lavf59.10.100
D/VideoEditor: 
D/VideoEditor: Stream #0:0
D/VideoEditor: : Video: h264 (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 304x236, q=2-31
D/VideoEditor: , 
D/VideoEditor: 18 fps, 
D/VideoEditor: 18432 tbn
D/VideoEditor: (default)
D/VideoEditor: 
D/VideoEditor: Metadata:
D/VideoEditor: encoder : 
D/VideoEditor: Lavc59.15.102 libx264
D/VideoEditor: 
D/VideoEditor: Side data:
D/VideoEditor: 
D/VideoEditor: cpb: 
D/VideoEditor: bitrate max/min/avg: 0/0/0 buffer size: 0 
D/VideoEditor: vbv_delay: N/A
D/VideoEditor: 
D/VideoEditor: frame= 1 fps=0.0 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x 

A/libc: Fatal signal 11 (SIGSEGV), code 2 (SEGV_ACCERR), fault addr 0x745d9ff000 in tid 16893 (pool-15-thread-), pid 16696 (videocompressor)


A/DEBUG: *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
Build fingerprint: 'samsung/x1sxx/x1s:12/SP1A.210812.016/G980FXXSFFVH7:user/release-keys'
Revision: '22'
ABI: 'arm64'
Processor: '5'
A/DEBUG: Timestamp: 2022-10-09 18:57:38.882598912+0500
A/DEBUG: Process uptime: 1086s
A/DEBUG: Cmdline: com.app.packagename
A/DEBUG: pid: 16939, tid: 20568, name: pool-15-thread- >>> com.app.packagename <<<
A/DEBUG: uid: 11091
A/DEBUG: signal 11 (SIGSEGV), code 2 (SEGV_ACCERR), fault addr 0x74640ce000
A/DEBUG: x0 0000007594f30960 x1 00000074640c9a60 x2 00000074640c9eb4 x3 00000074640cac34
A/DEBUG: x4 00000074640cdff4 x5 00000074671bb2dc x6 00000000fffffffb x7 0000000000000013
A/DEBUG: x8 000000000000000e x9 00000074640cddc0 x10 0000000000000013 x11 0000007488459ffc
A/DEBUG: x12 00000074640c9c70 x13 000000000000000e x14 0000000000007fff x15 0000000000000013
A/DEBUG: x16 00000074640cac04 x17 00000074640c7a58 x18 000000746626e000 x19 0000000000000027
A/DEBUG: x20 000000776541c3b0 x21 00000074671bc4f8 x22 00000074640ca9f0 x23 0000007765422300
A/DEBUG: x24 0000000000000027 x25 00000074640cac04 x26 0000000000000028 x27 00000074640c9a30
A/DEBUG: x28 0000007594f30940 x29 000000000000010a
A/DEBUG: lr 000000748841a960 sp 00000074671bb290 pc 000000748845a010 pst 0000000080000000
A/DEBUG: backtrace:
A/DEBUG: #00 pc 0000000000359010 /data/app/~~IBCbjRbZBpQ00ORNDFZdxg==/com.app.packagename-5sdOCmN82SjJJTibcsYMpQ==/base.apk!libavcodec.so


I don't know what is wrong with the output width and height parameters. If I change
[0:v]crop=304:236:2:2[cropped]to[0:v]crop=304:304:2:2[cropped]with change in height, the process completes successfully. The original video (1080x808) is not smaller than the output size. It does not seem to be a problem in the video as I have tried different videos. Any tips on what is missing from my command ?

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