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Médias (1)
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Collections - Formulaire de création rapide
19 février 2013, par
Mis à jour : Février 2013
Langue : français
Type : Image
Autres articles (79)
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MediaSPIP Core : La Configuration
9 novembre 2010, parMediaSPIP Core fournit par défaut trois pages différentes de configuration (ces pages utilisent le plugin de configuration CFG pour fonctionner) : une page spécifique à la configuration générale du squelettes ; une page spécifique à la configuration de la page d’accueil du site ; une page spécifique à la configuration des secteurs ;
Il fournit également une page supplémentaire qui n’apparait que lorsque certains plugins sont activés permettant de contrôler l’affichage et les fonctionnalités spécifiques (...) -
Emballe médias : à quoi cela sert ?
4 février 2011, parCe plugin vise à gérer des sites de mise en ligne de documents de tous types.
Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ; -
Use, discuss, criticize
13 avril 2011, parTalk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
A discussion list is available for all exchanges between users.
Sur d’autres sites (5536)
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ffmpeg cross compiles nicely for aarch64, but when linking with my project, gives Relocations in generic ELF (EM : 62)
29 août 2019, par Lucas ZanellaHere’s how I’m configuring ffmpeg :
./configure \
--prefix=${BUILD_DIR}/desktop/aarch64 \
--disable-doc \
--enable-cross-compile \
--cross-prefix=aarch64-linux-gnu-\
--target-os=linux \
--arch=aarch64 \
--extra-cflags="-O3 -fPIC" \
--enable-shared \
--disable-static \
--disable-debug \
--disable-runtime-cpudetect \
--disable-programs \
--disable-muxers \
--disable-encoders \
--disable-decoders \
${DECODERS_TO_ENABLE} \
--disable-bsfs \
--disable-pthreads \
--disable-avdevice \
--disable-network \
--disable-postproc
make clean
make -j$(nproc)
make installIt compiles fine. Then, when I try to link my project with this compiled ffmpeg, it gives me
/usr/bin/ld: ../../../deps/ffmpeg/build/desktop/aarch64/lib/libavcodec.a(allcodecs.o): Relocations in generic ELF (EM: 62)
/usr/bin/ld: ../../../deps/ffmpeg/build/desktop/aarch64/lib/libavcodec.a(allcodecs.o): Relocations in generic ELF (EM: 62)
/usr/bin/ld: ../../../deps/ffmpeg/build/desktop/aarch64/lib/libavcodec.a(allcodecs.o): Relocations in generic ELF (EM: 62)
/usr/bin/ld: ../../../deps/ffmpeg/build/desktop/aarch64/lib/libavcodec.a(allcodecs.o): Relocations in generic ELF (EM: 62)
/usr/bin/ld: ../../../deps/ffmpeg/build/desktop/aarch64/lib/libavcodec.a(allcodecs.o): Relocations in generic ELF (EM: 62)
/usr/bin/ld: ../../../deps/ffmpeg/build/desktop/aarch64/lib/libavcodec.a(allcodecs.o): Relocations in generic ELF (EM: 62)
/usr/bin/ld: ../../../deps/ffmpeg/build/desktop/aarch64/lib/libavcodec.a(allcodecs.o): Relocations in generic ELF (EM: 62)
/usr/bin/ld: ../../../deps/ffmpeg/build/desktop/aarch64/lib/libavcodec.a(allcodecs.o): Relocations in generic ELF (EM: 62)
/usr/bin/ld: ../../../deps/ffmpeg/build/desktop/aarch64/lib/libavcodec.a(allcodecs.o): Relocations in generic ELF (EM: 62)
../../../deps/ffmpeg/build/desktop/aarch64/lib/libavcodec.a: error adding symbols: File in wrong formatIn this answer : https://stackoverflow.com/a/23185739/10116440 he says that CC is missing. I’m also not using CC but shouldn’t CC be the same as
--cross-prefix
?I also found http://lakm.us/logit/2012/11/cross-compiling-ubuntu-arm-ffmpeg/ in where he says that I should use
--cross-prefix=arm-linux-gnueabi-
, in my case arm should beaarch64
. However, there’s noaarch64-linux-gnueabi-
toolchain, onlyaarch64-linux-gnu-
. Can it be the problem ? I think no because eabi looks like its for 32 bits, I guessIt’s worth noticing that I’m bulding ffmpeg on a
amd64
but using the static library to build my project on aaarch64
. -
How do I use gpg to verify an ffmpeg source snapshot download ? [closed]
2 novembre 2024, par NeddieI downloaded two files :


ffmpeg-snapshot.tar.bz2
ffmpeg-devel.asc



The
.asc
file looks like this :

-----BEGIN PGP PUBLIC KEY BLOCK-----


mQENBE22rV0BCAC3DzRmA2XlhrqYv9HKoEvNHHf+PzosmCTHmYhWHDqvBxPkSvCl
...
+x8ETJgPoNK3kQoDagApj4qAt83Ayac3HzNIuEJ7LdvfINIOprujnJ9vH4n04XLg
I4EZ
=Rjbw
-----END PGP PUBLIC KEY BLOCK-----


The command


gpg --show-keys ffmpeg-devel.asc



gives


pub rsa2048 2011-04-26 [SC]
 FCF986EA15E6E293A5644F10B4322F04D67658D8
uid FFmpeg release signing key <ffmpeg-devel@ffmpeg.org>
sub rsa2048 2011-04-26 [E]



The command


gpg --verify ffmpeg-devel.asc ffmpeg-snapshot.tar.bz2



gives output


gpg: verify signatures failed: Unexpected error



I tried decompressing the bz2 file and then


gpg --verify ffmpeg-devel.asc ffmpeg-snapshot.tar



and got the same error.


What am I missing ?


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Download a video from blob:https url from eventive
26 août 2020, par jjcasmarI want to download a video from eventive but the tag contains a blob url (blob :https://watch.eventive.org/**************).


I have been reading some answers to similar questions but they all assume that the video has a mp3u8 file extension, which in my case doesn't.


I have also tried to directly download that url (removing the blob :) with curl, but I obtained a html code which I cant really understand, which contains a lot of references to javascript files.


Any tip would be really helpful.


Edit :


I have been doing some more tests and I have been able to found a url to a manifest file which points apparently to the video data. I have tried to open that url using VLC and it loads some info about the video, and it even plays it, but the screen is completely black.


I have also tried to download it using ffmpeg but it gives a bunch of errors.


ffmpeg -i https://eventiveprod-usea.streaming.media.azure.net/02968382-069a-4f02-ab3b-67c0b5a8d5b7/5f427f2d65a569006ebd326c.ism/manifest\(format\=mpd-time-csf\) output.mp4



ffmpeg output


ffmpeg version n4.3.1 Copyright (c) 2000-2020 the FFmpeg developers
 built with gcc 10.1.0 (GCC)
 configuration: --prefix=/usr --disable-debug --disable-static --disable-stripping --enable-avisynth --enable-fontconfig --enable-gmp --enable-gnutls --enable-gpl --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libdrm --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libiec61883 --enable-libjack --enable-libmfx --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librav1e --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libv4l2 --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxml2 --enable-libxvid --enable-nvdec --enable-nvenc --enable-omx --enable-shared --enable-version3
 libavutil 56. 51.100 / 56. 51.100
 libavcodec 58. 91.100 / 58. 91.100
 libavformat 58. 45.100 / 58. 45.100
 libavdevice 58. 10.100 / 58. 10.100
 libavfilter 7. 85.100 / 7. 85.100
 libswscale 5. 7.100 / 5. 7.100
 libswresample 3. 7.100 / 3. 7.100
 libpostproc 55. 7.100 / 55. 7.100
[h264 @ 0x556c1e280bc0] top block unavailable for requested intra mode
[h264 @ 0x556c1e280bc0] error while decoding MB 34 0, bytestream 41478 
[h264 @ 0x556c1e280bc0] concealing 8160 DC, 8160 AC, 8160 MV errors in I frame
[h264 @ 0x556c1e2ce440] top block unavailable for requested intra mode -1
[h264 @ 0x556c1e2ce440] error while decoding MB 34 0, bytestream 22093 
[h264 @ 0x556c1e2ce440] concealing 3600 DC, 3600 AC, 3600 MV errors in I frame
[h264 @ 0x556c1e2f9f40] top block unavailable for requested intra mode -1
[h264 @ 0x556c1e2f9f40] error while decoding MB 24 0, bytestream 15117 
[h264 @ 0x556c1e2f9f40] concealing 2040 DC, 2040 AC, 2040 MV errors in I frame
[h264 @ 0x556c1e333bc0] top block unavailable for requested intra mode -1
[h264 @ 0x556c1e333bc0] error while decoding MB 17 0, bytestream 8716 
[h264 @ 0x556c1e333bc0] concealing 920 DC, 920 AC, 920 MV errors in I frame
[aac @ 0x556c1e3745c0] channel element 2.8 is not allocated
Input #0, dash, from 'https://eventiveprod-usea.streaming.media.azure.net/02968382-069a-4f02-ab3b-67c0b5a8d5b7/5f427f2d65a569006ebd326c.ism/manifest(format=mpd-time-csf)':
 Duration: 00:21:18.00, start: 0.066000, bitrate: 0 kb/s
 Program 0 
 Stream #0:0: Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 1317 kb/s, 29.97 fps, 29.97 tbr, 10000k tbn, 59.94 tbc
 Metadata:
 variant_bitrate : 1770930
 id : 1_V_video_1
 Stream #0:1: Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 686 kb/s, 29.97 fps, 29.97 tbr, 10000k tbn, 59.94 tbc
 Metadata:
 variant_bitrate : 904295
 id : 1_V_video_2
 Stream #0:2: Video: h264 (High) (avc1 / 0x31637661), yuv420p, 960x540 [SAR 1:1 DAR 16:9], 495 kb/s, 29.97 fps, 29.97 tbr, 10000k tbn, 59.94 tbc
 Metadata:
 variant_bitrate : 572685
 id : 1_V_video_3
 Stream #0:3: Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 308 kb/s, 29.97 fps, 29.97 tbr, 10000k tbn, 59.94 tbc
 Metadata:
 variant_bitrate : 301036
 id : 1_V_video_4
 Stream #0:4(en): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s
 Metadata:
 variant_bitrate : 127999
 id : 5_A_aac_eng_2_127999
Stream mapping:
 Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
 Stream #0:4 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[aac @ 0x556c1e392dc0] channel element 2.8 is not allocated
Error while decoding stream #0:4: Invalid data found when processing input 
[h264 @ 0x556c1e3da900] top block unavailable for requested intra mode 
[h264 @ 0x556c1e3da900] error while decoding MB 34 0, bytestream 41478 
[aac @ 0x556c1e392dc0] Reserved bit set. 
[aac @ 0x556c1e392dc0] Number of bands (13) exceeds limit (11). 
[h264 @ 0x556c1e3da900] concealing 8160 DC, 8160 AC, 8160 MV errors in I frame
Error while decoding stream #0:4: Invalid data found when processing input
[aac @ 0x556c1e392dc0] channel element 2.4 is not allocated 
Error while decoding stream #0:4: Invalid data found when processing input 
[aac @ 0x556c1e392dc0] Multiple frames in a packet.
...
[libx264 @ 0x5588338c2d00] frame I:1 Avg QP: 4.13 size: 421
[libx264 @ 0x5588338c2d00] frame P:32 Avg QP:14.06 size: 1216
[libx264 @ 0x5588338c2d00] frame B:96 Avg QP:20.52 size: 306
[libx264 @ 0x5588338c2d00] consecutive B-frames: 0.8% 0.0% 0.0% 99.2%
[libx264 @ 0x5588338c2d00] mb I I16..4: 100.0% 0.0% 0.0%
[libx264 @ 0x5588338c2d00] mb P I16..4: 0.6% 0.6% 0.0% P16..4: 9.4% 0.3% 0.3% 0.0% 0.0% skip:88.9%
[libx264 @ 0x5588338c2d00] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 3.7% 0.0% 0.0% direct: 0.0% skip:96.2% L0:53.5% L1:46.3% BI: 0.2%
[libx264 @ 0x5588338c2d00] 8x8 transform intra:13.0% inter:86.8%
[libx264 @ 0x5588338c2d00] coded y,uvDC,uvAC intra: 1.3% 0.8% 0.2% inter: 0.2% 0.2% 0.0%
[libx264 @ 0x5588338c2d00] i16 v,h,dc,p: 98% 0% 2% 0%
[libx264 @ 0x5588338c2d00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 33% 2% 64% 0% 0% 0% 0% 0% 0%
[libx264 @ 0x5588338c2d00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 18% 42% 3% 1% 1% 2% 2% 1%
[libx264 @ 0x5588338c2d00] i8c dc,h,v,p: 99% 0% 0% 0%
[libx264 @ 0x5588338c2d00] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x5588338c2d00] ref P L0: 86.7% 1.2% 8.8% 3.3%
[libx264 @ 0x5588338c2d00] ref B L0: 62.7% 35.4% 1.9%
[libx264 @ 0x5588338c2d00] ref B L1: 96.1% 3.9%
[libx264 @ 0x5588338c2d00] kb/s:127.70
Conversion failed!