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Rennes Emotion Map 2010-11
19 octobre 2011, par
Mis à jour : Juillet 2013
Langue : français
Type : Texte
Autres articles (8)
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Menus personnalisés
14 novembre 2010, parMediaSPIP utilise le plugin Menus pour gérer plusieurs menus configurables pour la navigation.
Cela permet de laisser aux administrateurs de canaux la possibilité de configurer finement ces menus.
Menus créés à l’initialisation du site
Par défaut trois menus sont créés automatiquement à l’initialisation du site : Le menu principal ; Identifiant : barrenav ; Ce menu s’insère en général en haut de la page après le bloc d’entête, son identifiant le rend compatible avec les squelettes basés sur Zpip ; (...) -
Le plugin : Podcasts.
14 juillet 2010, parLe problème du podcasting est à nouveau un problème révélateur de la normalisation des transports de données sur Internet.
Deux formats intéressants existent : Celui développé par Apple, très axé sur l’utilisation d’iTunes dont la SPEC est ici ; Le format "Media RSS Module" qui est plus "libre" notamment soutenu par Yahoo et le logiciel Miro ;
Types de fichiers supportés dans les flux
Le format d’Apple n’autorise que les formats suivants dans ses flux : .mp3 audio/mpeg .m4a audio/x-m4a .mp4 (...) -
Mise à disposition des fichiers
14 avril 2011, parPar défaut, lors de son initialisation, MediaSPIP ne permet pas aux visiteurs de télécharger les fichiers qu’ils soient originaux ou le résultat de leur transformation ou encodage. Il permet uniquement de les visualiser.
Cependant, il est possible et facile d’autoriser les visiteurs à avoir accès à ces documents et ce sous différentes formes.
Tout cela se passe dans la page de configuration du squelette. Il vous faut aller dans l’espace d’administration du canal, et choisir dans la navigation (...)
Sur d’autres sites (4672)
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JavaCV/FFmpeg causes crash only on Lollipop
13 novembre 2015, par WeirdHatI get reports of this crash from users of my app on Galaxy Note devices running Android Lollipop (might happen on other devices but the majority of my users have Galaxy Note because it’s a drawing app). Below is the relevant code from my ASyncTask which exports a series of images (plus audio) to a video file using JavaCV/FFmpeg, and the stack trace from the reported crash. It works fine on my Note 8.0 running KitKat (there’s no Lollipop update available for that device), and works fine in Lollipop on the emulator, so I’m having a hard time tracking down the cause and don’t know what to do.
@Override
protected String doInBackground(final File... params) {
FFmpegFrameRecorder recorder = new FFmpegFrameRecorder(params[0],canvas_width,canvas_height, 0);
FrameGrabber audiograbber = null;
if(audio!=null) audiograbber = new FFmpegFrameGrabber(audio);
Frame audioframe;
Frame image;
AndroidFrameConverter converter = new AndroidFrameConverter();
try {
recorder.setVideoCodec(avcodec.AV_CODEC_ID_H264);
recorder.setFrameRate(framerate);
recorder.setPixelFormat(0);
if(audio!=null) {
audiograbber.setFrameRate(framerate);
audiograbber.start();
recorder.setAudioChannels(audiograbber.getAudioChannels());
recorder.setSampleRate(audiograbber.getSampleRate());
}
recorder.start();
Bitmap drawframe = createBitmap(canvas_width, canvas_height, Bitmap.Config.ARGB_8888);
Canvas c = new Canvas(drawframe);
Paint p = new Paint();
for(int frame=0; frame/code to draw image
image = converter.convert(drawframe);
recorder.record(image);
}
if(isCancelled()) {
bgbitmap.recycle();
drawframe.recycle();
return "Cancelled";
}
if(audio!=null) {
while((audioframe = audiograbber.grabFrame()) != null) {
recorder.record(audioframe);
}
}
recorder.stop();
bgbitmap.recycle();
drawframe.recycle();
if(audio!=null) audiograbber.stop();
return "Saved "+params[0];
} catch (Exception e) {
e.printStackTrace();
}
return "Failed";
}-
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
Build fingerprint: 'samsung/treltexx/trelte:5.1.1/LMY47X/N910CXXU1COH4:user/release-keys'
Revision: '21'
ABI: 'arm'
pid: 12039, tid: 12053, name: GCDaemon >>> com.weirdhat.roughanimator <<<
signal 6 (SIGABRT), code -6 (SI_TKILL), fault addr --------
Abort message: 'sart/runtime/gc/collector/mark_sweep.cc:381] Can't mark invalid object'
r0 00000000 r1 00002f15 r2 00000006 r3 00000000
r4 b366bdb8 r5 00000006 r6 00000002 r7 0000010c
r8 00000001 r9 b446f550 sl b4429000 fp 9a975c60
ip 00002f15 sp b366b008 lr b6db9cb9 pc b6ddd3ac cpsr 60070010
backtrace:
#00 pc 0003b3ac /system/lib/libc.so (tgkill+12)
#01 pc 00017cb5 /system/lib/libc.so (pthread_kill+52)
#02 pc 000188c7 /system/lib/libc.so (raise+10)
#03 pc 00015165 /system/lib/libc.so (__libc_android_abort+36)
#04 pc 00012fac /system/lib/libc.so (abort+4)
#05 pc 00242f17 /system/lib/libart.so (art::Runtime::Abort()+170)
#06 pc 000ad991 /system/lib/libart.so (art::LogMessage::~LogMessage()+1360)
#07 pc 0013ec53 /system/lib/libart.so (bool art::gc::accounting::HeapBitmap::AtomicTestAndSet(art::mirror::Object const*, art::gc::collector::MarkSweepMarkObjectSlowPath const&)+422)
#08 pc 0013ed27 /system/lib/libart.so (art::gc::collector::MarkSweep::MarkObjectParallel(art::mirror::Object const*)+142)
#09 pc 0013ff23 /system/lib/libart.so (art::gc::collector::MarkSweep::MarkRootParallelCallback(art::mirror::Object**, void*, art::RootInfo const&)+26)
#10 pc 0025893d /system/lib/libart.so (art::ReferenceMapVisitor::VisitQuickFrame()+1024)
#11 pc 00258cad /system/lib/libart.so (art::ReferenceMapVisitor::VisitFrame()+224)
#12 pc 0024c8e9 /system/lib/libart.so (art::StackVisitor::WalkStack(bool)+276)
#13 pc 0024e617 /system/lib/libart.so (art::Thread::VisitRoots(void (*)(art::mirror::Object**, void*, art::RootInfo const&), void*)+994)
#14 pc 0013ef9f /system/lib/libart.so (art::gc::collector::CheckpointMarkThreadRoots::Run(art::Thread*)+126)
#15 pc 0025b44d /system/lib/libart.so (art::ThreadList::RunCheckpoint(art::Closure*)+296)
#16 pc 0013dc0d /system/lib/libart.so (art::gc::collector::MarkSweep::MarkRootsCheckpoint(art::Thread*, bool)+96)
#17 pc 0014165d /system/lib/libart.so (art::gc::collector::MarkSweep::PreCleanCards()+172)
#18 pc 001417d3 /system/lib/libart.so (art::gc::collector::MarkSweep::MarkingPhase()+126)
#19 pc 001418b9 /system/lib/libart.so (art::gc::collector::MarkSweep::RunPhases()+176)
#20 pc 00138527 /system/lib/libart.so (art::gc::collector::GarbageCollector::Run(art::gc::GcCause, bool)+246)
#21 pc 0015865b /system/lib/libart.so (art::gc::Heap::CollectGarbageInternal(art::gc::collector::GcType, art::gc::GcCause, bool)+1426)
#22 pc 00159af5 /system/lib/libart.so (art::gc::Heap::ConcurrentGC(art::Thread*)+56)
#23 pc 000003ef /system/framework/arm/boot.oat -
How to add subtitles using FFmpeg-kit ?
17 novembre 2024, par Mohammed BekeleI'm running a Flutter app with Ffmpeg-kit package to burn a subtitle on a video. I have a words list with the timings and map that to generate an srt and ass file, but when executing this it didn't work.


Firstly, here is how I generated the Ass file.


Future<string> _createAssFile() async {
 String filePath = await getAssOutputFilePath();

 final file = File(filePath);
 final buffer = StringBuffer();

 // Write ASS headers
 buffer.writeln('[Script Info]');
 buffer.writeln('Title: Generated ASS');
 buffer.writeln('ScriptType: v4.00+');
 buffer.writeln('Collisions: Normal');
 buffer.writeln('PlayDepth: 0');
 buffer.writeln('Timer: 100,0000');
 buffer.writeln('[V4+ Styles]');
 buffer.writeln(
 'Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour, BackColour, Bold, Italic, Underline, StrikeOut, ScaleX, ScaleY, Spacing, Angle, BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, Encoding');
 buffer.writeln(
 'Style: Default,Arial,40,&H00FFFFFF,&H000000FF,&H00000000,&H80000000,1,1,1,1,100,100,0,0,1,1,1,2,10,10,10,1');
 buffer.writeln('[Events]');
 buffer.writeln(
 'Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text');

 // Write events (subtitles)
 for (int i = 0; i < widget.words.length; i++) {
 final word = widget.words[i];
 final startTime = _formatAssTime(word['startTime'].toDouble());
 final endTime = _formatAssTime(word['endTime'].toDouble());
 final text = word['word'];

 buffer.writeln('Dialogue: 0,$startTime,$endTime,Default,,0,0,0,,$text');
 }

 await file.writeAsString(buffer.toString());
 return filePath;
 }

 String _formatAssTime(double seconds) {
 final int hours = seconds ~/ 3600;
 final int minutes = ((seconds % 3600) ~/ 60);
 final int secs = (seconds % 60).toInt();
 final int millis = ((seconds - secs) * 1000).toInt() % 1000;

 return '${hours.toString().padLeft(1, '0')}:${minutes.toString().padLeft(2, '0')}:${secs.toString().padLeft(2, '0')}.${(millis ~/ 10).toString().padLeft(2, '0')}';
 }
</string>

Then I used this command which was the official way of adding ass file to a video.


String newCmd = "-i $videoPath -vf ass=$assFilePath -c:a copy $_outputPath";


Yet when executing this command it did not work. However I changed it to this command


String newCmd = "-i $videoPath -i $assFilePath $_outputPath";


Well, that code works but the styling is not being applied. So I tried yet another command to filter and position the ass file.


String newCmd = "-i $videoPath -i $assFilePath -filter_complex \"[0:v][1:s]ass=\\an5:text='%{event.text}',scale=iw*0.8:ih*0.8,setdar=16/9[outv]\" -map [outv] -c:a copy $_outputPath";


This made it even worse, because the app crashed when I ran this. Also there is a log for this command before crashing


F/libc (19624): Fatal signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x19 in tid 21314 (pool-4-thread-7), pid 19624 (ple.caption_app)
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
Build fingerprint: 'samsung/a15nsxx/a15:14/UP1A.231005.007/A155FXXU1AWKA:user/release-keys'
Revision: '5'
ABI: 'arm64'
Processor: '7'
Timestamp: 2024-07-10 19:27:40.812476860+0300
Process uptime: 1746s
Cmdline: com.example.caption_app
pid: 19624, tid: 21314, name: pool-4-thread-7 >>> com.example.caption_app <<<
uid: 10377
tagged_addr_ctrl: 0000000000000001 (PR_TAGGED_ADDR_ENABLE)
signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x0000000000000019
Cause: null pointer dereference
 x0 0000000000000001 x1 b400006ec98d8660 x2 0000000000000000 x3 0000000000000002
 x4 0000006f62d1ea12 x5 b400006e04f745ea x6 352f35372f64352f x7 7f7f7f7f7f7f7f7f
 x8 632ace36577a905e x9 632ace36577a905e x10 0000006e191378c0 x11 0000000000000001
 x12 0000000000000001 x13 0000000000000000 x14 0000000000000004 x15 0000000000000008
 x16 0000006e27ffa358 x17 0000006e27dbfb00 x18 0000006e00d48000 x19 0000006f62d1f0e8
 x20 0000006f62d24000 x21 0000006e27ffc5d0 x22 0000006e27ffc5f0 x23 0000000000000000
 x24 b400006f3f089248 x25 0000006f62d1f220 x26 b400006f3f057b20 x27 0000000000000002
 x28 0000000000000088 x29 0000006f62d1f100
 lr 0000006e27dbfb0c sp 0000006f62d1f0a0 pc 0000006e27dbfb10 pst 0000000060001000
1 total frames
backtrace:
 #00 pc 0000000000121b10 /data/app/~~oWqjrGA2indQhuEw6u_J2A==/com.example.caption_app-u2Ofk54FVtMc5D-i3SLC6g==/base.apk!libavfilter.so (offset 0x10a46000) (avfilter_inout_free+16) 
Lost connection to device.


I tried the normal command in my local machine on Windows, and this is what I used


ffmpeg -i F:\ffmpeg\video.avi -vf subtitles='F\:\\ffmpeg\\caption.srt':force_style='Fontsize=24' F:\ffmpeg\new.mp4


As you can see above when subtitles are used it had an extra backslashes for each path and a pre backslash after the partition letter. But I don't know if this does apply for android devices. How can I make sense of this ?


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fastest ffmpeg without caring about quality
31 mai 2019, par RedDeathI would like to convert any video into .mp4 as fast as possible without caring about quality loss. I have used the next commands with which I have been able to finish the process in 37 seconds for a 10 second video.
-vcodec h264
-crf 32
-preset ultrafastHowever 37 seconds is still too long for a 10 seconds video. Is there any improvements that I can do to the command in order to reduce the execution time ?
Edit (Extra info) :
I’m using FFmpeg Android (
implementation 'com.writingminds:FFmpegAndroid:0.3.2') even though commands usually work for any FFmpeg (with a few variants depending on the FFmpeg version).The command used in my case which gave me the fastest result so far is :
mFfmpeg.execute(
arrayOf(
"-i" , videoCopy?.path,
"-vcodec", "h264",
"-crf", "32",
"-preset", "ultrafast",
"-y", uploadFile?.path),
object : ExecuteBinaryResponseHandler() { ... }Which for regular FFmpeg command would be
"-ffmpeg -i {video?.path} -vcodec h264 -crf 32 -preset ultrafast -y {uploadFile?.path}"Where
videois my original videoFileanduploadFileis theFilewhere I want to save the result into.In a Samsung J3 (SM-J320M, you can find its specifications online) such command takes the aforementioned 37 seconds.
After executing such command the first onProgress message returned by FFmpeg prints :
ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers built with gcc 4.8 (GCC)
configuration:
--target-os=linux
--cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi-
--arch=arm
--cpu=cortex-a8
--enable-runtime-cpudetect
--sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot
--enable-pic
--enable-libx264
--enable-libass
--enable-libfreetype
--enable-libfribidi
--enable-libmp3lame
--enable-fontconfig
--enable-pthreads
--disable-debug
--disable-ffserver
--enable-version3
--enable-hardcoded-tables
--disable-ffplay
--disable-ffprobe
--enable-gpl
--enable-yasm
--disable-doc
--disable-shared
--enable-static
--pkg-config=/home/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config
--prefix=/home/vagrant/SourceCode/ffmpeg-android/build/armeabi-v7a
--extra-cflags='-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all'
--extra-ldflags='-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie'
--extra-libs='-lpng -lexpat -lm'
--extra-cxxflags=
libavutil 55. 17.103 / 55. 17.103
libavcodec 57. 24.102 / 57. 24.102
libavformat 57. 25.100 / 57. 25.100
libavdevice 57. 0.101 / 57. 0.101
libavfilter 6. 31.100 / 6. 31.100
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.101 / 2. 0.101
libpostproc 54. 0.100 / 54. 0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/DCIM/Yakatak/656.mp4': Metadata: major_brand : mp42 minor_version : 0 compatible_brands: isommp42 creation_time : 2019-05-29 11:27:56 location : +51.5202-000.1435/ location-eng : +51.5202-000.1435/ Duration: 00:00:09.47, start: 0.000000, bitrate: 12147 kb/s Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1280x720, 11899 kb/s, 30.02 fps, 30 tbr, 90k tbn, 180k tbc (default) Metadata: rotate : 90 creation_time : 2019-05-29 11:27:56 handler_name : VideoHandle Side data: displaymatrix: rotation of -90.00 degrees Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 256 kb/s (default) Metadata: creation_time : 2019-05-29 11:27:56 handler_name : SoundHandle[libx264 @ 0xb5428800] using cpu capabilities: none![libx264 @ 0xb5428800] profile Constrained Baseline, level 3.1[libx264 @ 0xb5428800] 264 - core 148 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=0 intra_refresh=0 rc=crf mbtree=0 crf=32.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=0
Output #0, mp4, to '/storage/emulated/0/DCIM/Yakatak/uploadFile.mp4': Metadata: major_brand : mp42 minor_version : 0 compatible_brands: isommp42 location-eng : +51.5202-000.1435/ location : +51.5202-000.1435/ encoder : Lavf57.25.100 Stream #0:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 720x1280, q=-1--1, 30 fps, 15360 tbn, 30 tbc (default) Metadata: handler_name : VideoHandle creation_time : 2019-05-29 11:27:56 encoder : Lavc57.24.102 libx264 Side data: unknown side data type 10 (24 bytes) Stream #0:1(eng): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 128 kb/s (default) Metadata: creation_time : 2019-05-29 11:27:56 handler_name : SoundHandle encoder : Lavc57.24.102 aacStream mapping: Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264)) Stream #0:1 -> #0:1 (aac (native) -> aac (native))Press [q] to stop, [?] for helpframe= 0 fps=0.0
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