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DJ Z-trip - Victory Lap : The Obama Mix Pt. 2
15 septembre 2011
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Autres articles (22)
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Création définitive du canal
12 mars 2010, parLorsque votre demande est validée, vous pouvez alors procéder à la création proprement dite du canal. Chaque canal est un site à part entière placé sous votre responsabilité. Les administrateurs de la plateforme n’y ont aucun accès.
A la validation, vous recevez un email vous invitant donc à créer votre canal.
Pour ce faire il vous suffit de vous rendre à son adresse, dans notre exemple "http://votre_sous_domaine.mediaspip.net".
A ce moment là un mot de passe vous est demandé, il vous suffit d’y (...) -
Les tâches Cron régulières de la ferme
1er décembre 2010, parLa gestion de la ferme passe par l’exécution à intervalle régulier de plusieurs tâches répétitives dites Cron.
Le super Cron (gestion_mutu_super_cron)
Cette tâche, planifiée chaque minute, a pour simple effet d’appeler le Cron de l’ensemble des instances de la mutualisation régulièrement. Couplée avec un Cron système sur le site central de la mutualisation, cela permet de simplement générer des visites régulières sur les différents sites et éviter que les tâches des sites peu visités soient trop (...) -
Taille des images et des logos définissables
9 février 2011, parDans beaucoup d’endroits du site, logos et images sont redimensionnées pour correspondre aux emplacements définis par les thèmes. L’ensemble des ces tailles pouvant changer d’un thème à un autre peuvent être définies directement dans le thème et éviter ainsi à l’utilisateur de devoir les configurer manuellement après avoir changé l’apparence de son site.
Ces tailles d’images sont également disponibles dans la configuration spécifique de MediaSPIP Core. La taille maximale du logo du site en pixels, on permet (...)
Sur d’autres sites (3784)
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How can I get neighbour frames when implementing my own ffmpeg filter ?
10 septembre 2019, par AaronI’m implementing a custom FFmpeg filter. When frame N is processing, I hope I can also get the information of frame N-1 and frame N+1. Is there any FFmpeg function I could use for some help ?
In my custom FFmpeg filter, the filter_frame function provides an AVFrame object, which is the Nth frame, but how can I get the former and the latter AVFrame object.
static int filter_frame(AVFilterLink *link, AVFrame *in) -
How can fix CalledProcessError : in ffmpeg
7 décembre 2020, par MarioI hope someone can help to troubleshoot this problem. I'm trying to save the loss plots out of Keras in the form of the following animation.






but I have been facing the following error, and ultimately I can't save the animation :



MovieWriter stderr:
[h264_v4l2m2m @ 0x55a67176f430] Could not find a valid device
[h264_v4l2m2m @ 0x55a67176f430] can't configure encoder
Error initializing output stream 0:0 -- Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height

---------------------------------------------------------------------------
BrokenPipeError Traceback (most recent call last)
~/anaconda3/envs/CR7/lib/python3.6/site-packages/matplotlib/animation.py in saving(self, fig, outfile, dpi, *args, **kwargs)
 229 try:
--> 230 yield self
 231 finally:

~/anaconda3/envs/CR7/lib/python3.6/site-packages/matplotlib/animation.py in save(self, filename, writer, fps, dpi, codec, bitrate, extra_args, metadata, extra_anim, savefig_kwargs, progress_callback)
 1155 frame_number += 1
-> 1156 writer.grab_frame(**savefig_kwargs)
 1157 

~/anaconda3/envs/CR7/lib/python3.6/site-packages/matplotlib/animation.py in grab_frame(self, **savefig_kwargs)
 383 self.fig.savefig(self._frame_sink(), format=self.frame_format,
--> 384 dpi=self.dpi, **savefig_kwargs)
 385 

~/anaconda3/envs/CR7/lib/python3.6/site-packages/matplotlib/figure.py in savefig(self, fname, transparent, **kwargs)
 2179 
-> 2180 self.canvas.print_figure(fname, **kwargs)
 2181 

~/anaconda3/envs/CR7/lib/python3.6/site-packages/matplotlib/backend_bases.py in print_figure(self, filename, dpi, facecolor, edgecolor, orientation, format, bbox_inches, **kwargs)
 2081 bbox_inches_restore=_bbox_inches_restore,
-> 2082 **kwargs)
 2083 finally:

~/anaconda3/envs/CR7/lib/python3.6/site-packages/matplotlib/backends/backend_agg.py in print_raw(self, filename_or_obj, *args, **kwargs)
 445 cbook.open_file_cm(filename_or_obj, "wb") as fh:
--> 446 fh.write(renderer._renderer.buffer_rgba())
 447 

BrokenPipeError: [Errno 32] Broken pipe

During handling of the above exception, another exception occurred:

CalledProcessError Traceback (most recent call last)
 in <module>
 17 print(f'{model_type.upper()} Train Time: {Timer} sec')
 18 
---> 19 create_loss_animation(model_type, hist.history['loss'], hist.history['val_loss'], epoch)
 20 
 21 evaluate(model, trainX, trainY, testX, testY, scores_train, scores_test)

 in create_loss_animation(model_type, loss_hist, val_loss_hist, epoch)
 34 
 35 ani = matplotlib.animation.FuncAnimation(fig, animate, fargs=(l1, l2, loss, val_loss, title), repeat=True, interval=1000, repeat_delay=1000)
---> 36 ani.save(f'loss_animation_{model_type}_oneDataset.mp4', writer=writer)

~/anaconda3/envs/CR7/lib/python3.6/site-packages/matplotlib/animation.py in save(self, filename, writer, fps, dpi, codec, bitrate, extra_args, metadata, extra_anim, savefig_kwargs, progress_callback)
 1154 progress_callback(frame_number, total_frames)
 1155 frame_number += 1
-> 1156 writer.grab_frame(**savefig_kwargs)
 1157 
 1158 # Reconnect signal for first draw if necessary

~/anaconda3/envs/CR7/lib/python3.6/contextlib.py in __exit__(self, type, value, traceback)
 97 value = type()
 98 try:
---> 99 self.gen.throw(type, value, traceback)
 100 except StopIteration as exc:
 101 # Suppress StopIteration *unless* it's the same exception that

~/anaconda3/envs/CR7/lib/python3.6/site-packages/matplotlib/animation.py in saving(self, fig, outfile, dpi, *args, **kwargs)
 230 yield self
 231 finally:
--> 232 self.finish()
 233 
 234 

~/anaconda3/envs/CR7/lib/python3.6/site-packages/matplotlib/animation.py in finish(self)
 365 def finish(self):
 366 '''Finish any processing for writing the movie.'''
--> 367 self.cleanup()
 368 
 369 def grab_frame(self, **savefig_kwargs):

~/anaconda3/envs/CR7/lib/python3.6/site-packages/matplotlib/animation.py in cleanup(self)
 409 if self._proc.returncode:
 410 raise subprocess.CalledProcessError(
--> 411 self._proc.returncode, self._proc.args, out, err)
 412 
 413 @classmethod

CalledProcessError: Command '['/usr/bin/ffmpeg', '-f', 'rawvideo', '-vcodec', 'rawvideo', '-s', '720x720', '-pix_fmt', 
'rgba', '-r', '5', '-loglevel', 'error', '-i', 'pipe:', '-vcodec', 'h264', '-pix_fmt', 'yuv420p', '-b', '800k', '-y', 
'loss_animation_CNN_oneDataset.mp4']' returned non-zero exit status 1.
</module>


I tried to ignore the error by this answer but it seems it's not the case. I also checked similar case but its answer for getting a static git binary is not my cas as well since not especial converting PNG to MP4 !



My code is as follows :



plt.rcParams['animation.ffmpeg_path'] = '/usr/bin/ffmpeg'

def animate(i, data1, data2, line1, line2):
 temp1 = data1.iloc[:int(i+1)]
 temp2 = data2.iloc[:int(i+1)]

 line1.set_data(temp1.index, temp1.value)
 line2.set_data(temp2.index, temp2.value)

 return (line1, line2)


def create_loss_animation(model_type, data1, data2):
 fig = plt.figure()
 plt.title(f'Loss on Train & Test', fontsize=25)
 plt.xlabel('Epoch', fontsize=20)
 plt.ylabel('Loss MSE for Sx-Sy & Sxy', fontsize=20)
 plt.xlim(min(data1.index.min(), data2.index.min()), max(data1.index.max(), data2.index.max()))
 plt.ylim(min(data1.value.min(), data2.value.min()), max(data1.value.max(), data2.value.max()))

 l1, = plt.plot([], [], 'o-', label='Train Loss', color='b', markevery=[-1])
 l2, = plt.plot([], [], 'o-', label='Test Loss', color='r', markevery=[-1])
 plt.legend(loc='center right', fontsize='xx-large')

 Writer = animation.writers['ffmpeg']
 writer = Writer(fps=5, bitrate=1800)

 ani = matplotlib.animation.FuncAnimation(fig, animate, fargs=(data1, data2, l1, l2), repeat=True, interval=1000, repeat_delay=1000)
 ani.save(f'{model_type}.mp4', writer=writer)

# create datasets
x = np.linspace(0,150,50)
y1 = 41*np.exp(-x/20)
y2 = 35*np.exp(-x/50)

my_data_number_1 = pd.DataFrame({'x':x, 'value':y1}).set_index('x')
my_data_number_2 = pd.DataFrame({'x':x, 'value':y2}).set_index('x')

create_loss_animation('test', my_data_number_1, my_data_number_2)


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Build FFmpeg with Freetype2 for ARM ( Android ) - SOLVED
15 juillet 2014, par Pawel CalaI’m trying to build FFmpeg binary file with freetype library included ( I need it for drawtext filter ). Unfortunately I cannot configure ffmpeg properly and every try ends with "freetype not found" error.
PS I’ve tried to build guardian-ffmpeg project but i’m getting errors during configure process.
PS2 Building plain ffmpeg works perfectly well
Configuration script :
make distclean &./configure --target-os=linux \
--cross-prefix=arm-linux-androideabi- \
--arch=arm \
--cpu=armv7-a \
--enable-libfreetype --enable-filter=drawtext \ #!Freetype params
--disable-network \
--disable-ffplay \
--disable-ffprobe \
--disable-ffserver \
--enable-protocol=file \
--sysroot=${ANDROID_NDK_ROOT_PATH}/platforms/${ANDROID_API_VERSION}/arch-arm \
--prefix=build/armeabi-v7a \
--disable-asm \
--extra-cflags='-DANDROID -Ifreetype2/ -I${ANDROID_NDK_ROOT_PATH}/sources/cxx-stl/system/include -march=armv7-a -mfloat-abi=softfp' \
--extra-ldflags='-Wl,--fix-cortex-a8 -Lfreetype2/ -L../android-libs -Wl,-rpath-link,../android-libs' \
--extra-cxxflags='-Wno-multichar -fno-exceptions -fno-rtti'
make -j6 && make install || exit 0Directories sctructure :
ffmpeg/
-ffmpeg dirs/
-freetype2/
-rest of ffmpeg files ( including configure, make, etc )I’ve checked patch sources in guardian-project and I’ve found that ffmpeg configure file might need some changes in
require_libfreetypemethod ?!Thanks in advance ( and sorry for my bad english )
EDIT :
Building on OSX Mavericks,
Last 3 lines ofconfig.log; OSX hasn’t gotpkg-configthereforefalsein 2nd line :require_libfreetype
false --exists --print-errors freetype
ERROR: freetype not foundEDIT :
SOLUTION !!!I’ve manadged to solve my issue. I’ve used Xubuntu 14.04 64bit + Freetype 2.5.3 + newest FFmpeg repo + install linux package "pkg_config" and small modifications in ffmpeg configure script ( find pkg_config and check initialization variable )
config file for freetype :
NDK_BASE=/home/dpc/Documents/android-ndk-r9d/
NDK_PROCESSOR=x86_64
NDK_PLATFORM_LEVEL=9
NDK_ABI=arm
NDK_COMPILER_VERSION=4.6
# Android NDK setup
NDK_PLATFORM_LEVEL=9
NDK_ABI=arm
NDK_COMPILER_VERSION=4.6
NDK_SYSROOT=$NDK_BASE/platforms/android-$NDK_PLATFORM_LEVEL/arch-$NDK_ABI
NDK_UNAME=`uname -s | tr '[A-Z]' '[a-z]'`
if [ $NDK_ABI = "x86" ]; then
HOST=i686-linux-android
NDK_TOOLCHAIN=$NDK_ABI-$NDK_COMPILER_VERSION
else
HOST=$NDK_ABI-linux-androideabi
NDK_TOOLCHAIN=$HOST-$NDK_COMPILER_VERSION
fi
NDK_TOOLCHAIN_BASE=$NDK_BASE/toolchains/$NDK_TOOLCHAIN/prebuilt/$NDK_UNAME-$NDK_PROCESSOR
echo "dpc:" $NDK_TOOLCHAIN_BASE
CC="$NDK_TOOLCHAIN_BASE/bin/$HOST-gcc --sysroot=$NDK_SYSROOT"
LD=$NDK_TOOLCHAIN_BASE/bin/$HOST-ld
STRIP=$NDK_TOOLCHAIN_BASE/bin/$HOST-strip
PREFIX=$(pwd)/build
simple_config(){
make clean
./configure --host=arm-linux-androideabi --without-zlib --without-png --prefix=
make -j4
make install DESTDIR=$(pwd)
}
complex_config(){
./configure \
CC="$CC" \
LD="$LD" \
CFLAGS="-std=gnu99 -mcpu=cortex-a8 -marm -mfloat-abi=softfp -mfpu=neon" \
--host=$HOST \
--with-sysroot="$NDK_SYSROOT" \
--enable-static \
--disable-shared \
--prefix=$PREFIX
--without-bzip2
make -j4
make install
}
make clean
complex_configffmpeg config file :
#!/bin/sh
ANDROID_NDK_ROOT_PATH=/home/dpc/Documents/android-ndk-r9d
ANDROID_API_VERSION=android-9
#export PATH=${ANDROID_NDK_ROOT_PATH}:${ANDROID_NDK_ROOT_PATH}/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86/bin/:$PATH
export PATH=${ANDROID_NDK_ROOT_PATH}:${ANDROID_NDK_ROOT_PATH}/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64/bin/:$PATH
echo $PATH
#export PKG_CONFIG_PATH=/home/dpc/Documents/freetype-2.5.3/build/lib/pkgconfig/
#echo $PKG_CONFIG_PATH
#armv7-a neon
#export ARCH=armeabi-v7a-neon
#./configure --target-os=linux --cross-prefix=arm-linux-androideabi- --arch=arm --cpu=armv7-a --sysroot=${ANDROID_NDK_ROOT_PATH}/platforms/${ANDROID_API_VERSION}/arch-arm --disable-avdevice --disable-decoder=h264_vdpau --prefix=build/armeabi-v7a-neon --extra-cflags='-DANDROID -I${ANDROID_NDK_ROOT_PATH}/sources/cxx-stl/system/include -march=armv7-a -mfloat-abi=softfp -mfpu=neon' --extra-ldflags='-Wl,--fix-cortex-a8 -L../android-libs -Wl,-rpath-link,../android-libs' --extra-cxxflags='-Wno-multichar -fno-exceptions -fno-rtti'
#make -j6 && make install && make distclean|| exit 0
#armv7-a
export ARCH=armeabi-v7a
./configure --target-os=linux \
--cross-prefix=arm-linux-androideabi- \
--arch=arm \
--enable-libfreetype \
--cpu=armv7-a \
--sysroot=${ANDROID_NDK_ROOT_PATH}/platforms/${ANDROID_API_VERSION}/arch-arm \
--disable-avdevice \
--disable-decoder=h264_vdpau \
--prefix=build/armeabi-v7a \
--extra-cflags='-DANDROID -I${ANDROID_NDK_ROOT_PATH}/sources/cxx-stl/system/include -march=armv7-a -mfloat-abi=softfp' \
--extra-ldflags='-Wl,--fix-cortex-a8 -L../android-libs -Wl,-rpath-link,../android-libs' \
--extra-cxxflags='-Wno-multichar -fno-exceptions -fno-rtti'
make -j6 && make install && make distclean|| exit 0Hope it helps someone (cc : @SinhHo )
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