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Bug de détection d’ogg
22 mars 2013, par
Mis à jour : Avril 2013
Langue : français
Type : Video
Autres articles (79)
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Configurer la prise en compte des langues
15 novembre 2010, parAccéder à la configuration et ajouter des langues prises en compte
Afin de configurer la prise en compte de nouvelles langues, il est nécessaire de se rendre dans la partie "Administrer" du site.
De là, dans le menu de navigation, vous pouvez accéder à une partie "Gestion des langues" permettant d’activer la prise en compte de nouvelles langues.
Chaque nouvelle langue ajoutée reste désactivable tant qu’aucun objet n’est créé dans cette langue. Dans ce cas, elle devient grisée dans la configuration et (...) -
Le profil des utilisateurs
12 avril 2011, parChaque utilisateur dispose d’une page de profil lui permettant de modifier ses informations personnelle. Dans le menu de haut de page par défaut, un élément de menu est automatiquement créé à l’initialisation de MediaSPIP, visible uniquement si le visiteur est identifié sur le site.
L’utilisateur a accès à la modification de profil depuis sa page auteur, un lien dans la navigation "Modifier votre profil" est (...) -
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.
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Open Banking Security 101 : Is open banking safe ?
3 décembre 2024, par Daniel Crough — Banking and Financial Services -
FFmpeg and reserved color primaries [closed]
21 janvier, par YozI am trying to get thumbnails from a hevc video downloaded from https://github.com/stashapp/stash/issues/4124#issuecomment-1720057183 and it works with most recent ffmpeg 7.1 (installed via homebrew on mac) printing :


ffmpeg -i input.mp4 -frames:v 1 out.jpg



ffmpeg version 7.1 Copyright (c) 2000-2024 the FFmpeg developers
 built with Apple clang version 16.0.0 (clang-1600.0.26.4)
 configuration: --prefix=/opt/homebrew/Cellar/ffmpeg/7.1_4 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags='-Wl,-ld_classic' --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libaribb24 --enable-libbluray --enable-libdav1d --enable-libharfbuzz --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox --enable-audiotoolbox --enable-neon
 libavutil 59. 39.100 / 59. 39.100
 libavcodec 61. 19.100 / 61. 19.100
 libavformat 61. 7.100 / 61. 7.100
 libavdevice 61. 3.100 / 61. 3.100
 libavfilter 10. 4.100 / 10. 4.100
 libswscale 8. 3.100 / 8. 3.100
 libswresample 5. 3.100 / 5. 3.100
 libpostproc 58. 3.100 / 58. 3.100
[hevc @ 0x134f07530] VPS 0 does not exist
[hevc @ 0x134f07530] SPS 0 does not exist.
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'input.mp4':
 Metadata:
 major_brand : mp42
 minor_version : 512
 compatible_brands: mp42iso2mp41
 creation_time : 2023-09-14T19:46:05.000000Z
 encoder : HandBrake 1.5.1 2022011000
 Duration: 00:01:26.05, start: 0.000000, bitrate: 231 kb/s
 Stream #0:0[0x1](und): Video: hevc (Main) (hvc1 / 0x31637668), yuv420p(tv, bt709/reserved/bt709), 648x648 [SAR 1:1 DAR 1:1], 188 kb/s, 30 fps, 30 tbr, 90k tbn (default)
 Metadata:
 creation_time : 2023-09-14T19:46:05.000000Z
 handler_name : VideoHandler
 vendor_id : [0][0][0][0]
 Stream #0:1[0x2](und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 36 kb/s (default)
 Metadata:
 creation_time : 2023-09-14T19:46:05.000000Z
 handler_name : Mono
 vendor_id : [0][0][0][0]
[hevc @ 0x1358065c0] VPS 0 does not exist
[hevc @ 0x1358065c0] SPS 0 does not exist.
Stream mapping:
 Stream #0:0 -> #0:0 (hevc (native) -> mjpeg (native))
Press [q] to stop, [?] for help
Output #0, image2, to 'out.jpg':
 Metadata:
 major_brand : mp42
 minor_version : 512
 compatible_brands: mp42iso2mp41
 encoder : Lavf61.7.100
 Stream #0:0(und): Video: mjpeg, yuv420p(pc, bt709/reserved/bt709, progressive), 648x648 [SAR 1:1 DAR 1:1], q=2-31, 200 kb/s, 30 fps, 30 tbn (default)
 Metadata:
 creation_time : 2023-09-14T19:46:05.000000Z
 handler_name : VideoHandler
 vendor_id : [0][0][0][0]
 encoder : Lavc61.19.100 mjpeg
 Side data:
 cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: N/A
[image2 @ 0x134f16080] The specified filename 'out.jpg' does not contain an image sequence pattern or a pattern is invalid.
[image2 @ 0x134f16080] Use a pattern such as %03d for an image sequence or use the -update option (with -frames:v 1 if needed) to write a single image.
[out#0/image2 @ 0x134f10480] video:5KiB audio:0KiB subtitle:0KiB other streams:0KiB global headers:0KiB muxing overhead: unknown
frame= 1 fps=0.0 q=5.1 Lsize=N/A time=00:00:00.03 bitrate=N/A speed=4.07x 



however, when I use custom compiled ffmpeg.wasm it fails with :


ffmpeg version N-118050-ga518b5540d Copyright (c) 2000-2024 the FFmpeg developers
 built with emcc (Emscripten gcc/clang-like replacement + linker emulating GNU ld) 3.1.73 (ac676d5e437525d15df5fd46bc2c208ec6d376a3)
 configuration: --target-os=none --arch=x86_32 --enable-cross-compile --enable-version3 --enable-zlib --enable-libaom --disable-encoder=libaom_av1 --enable-libopenh264 --enable-libkvazaar --enable-libvpx --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libopus --enable-libwebp --enable-libsvtav1 --enable-librubberband --disable-x86asm --disable-inline-asm --disable-stripping --disable-programs --disable-doc --disable-debug --disable-runtime-cpudetect --disable-autodetect --extra-cflags='-O3 -flto -I/ffmpeg-wasm/build/include -pthread -msimd128' --extra-cxxflags='-O3 -flto -I/ffmpeg-wasm/build/include -pthread -msimd128' --extra-ldflags='-O3 -flto -I/ffmpeg-wasm/build/include -pthread -msimd128 -L/ffmpeg-wasm/build/lib' --pkg-config-flags=--static --nm=emnm --ar=emar --ranlib=emranlib --cc=emcc --cxx=em++ --objcc=emcc --dep-cc=emcc --enable-gpl --enable-libx264 --enable-libx265
 libavutil 59. 49.100 / 59. 49.100
 libavcodec 61. 26.100 / 61. 26.100
 libavformat 61. 9.100 / 61. 9.100
 libavdevice 61. 4.100 / 61. 4.100
 libavfilter 10. 6.101 / 10. 6.101
 libswscale 8. 12.100 / 8. 12.100
 libswresample 5. 4.100 / 5. 4.100
 libpostproc 58. 4.100 / 58. 4.100
[hevc @ 0x38d0000] VPS 0 does not exist
[hevc @ 0x38d0000] SPS 0 does not exist.
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'input.mp4':
 Metadata:
 major_brand : mp42
 minor_version : 512
 compatible_brands: mp42iso2mp41
 creation_time : 2023-09-14T19:46:05.000000Z
 encoder : HandBrake 1.5.1 2022011000
 Duration: 00:01:26.05, start: 0.000000, bitrate: 231 kb/s
 Stream #0:0[0x1](und): Video: hevc (Main) (hvc1 / 0x31637668), yuv420p(tv, bt709/reserved/bt709), 648x648 [SAR 1:1 DAR 1:1], 188 kb/s, 30 fps, 30 tbr, 90k tbn (default)
 Metadata:
 creation_time : 2023-09-14T19:46:05.000000Z
 handler_name : VideoHandler
 vendor_id : [0][0][0][0]
 Stream #0:1[0x2](und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 36 kb/s (default)
 Metadata:
 creation_time : 2023-09-14T19:46:05.000000Z
 handler_name : Mono
 vendor_id : [0][0][0][0]
[hevc @ 0x38d0300] VPS 0 does not exist
[hevc @ 0x38d0300] SPS 0 does not exist.
Stream mapping:
 Stream #0:0 -> #0:0 (hevc (native) -> mjpeg (native))
Press [q] to stop, [?] for help
[swscaler @ 0x8ca0000] Unsupported input (Not supported): fmt:yuv420p csp:bt709 prim:reserved trc:bt709 -> fmt:yuv420p csp:bt709 prim:reserved trc:bt709
[vf#0:0 @ 0x3830900] Error while filtering: Not supported
[vf#0:0 @ 0x3830900] Task finished with error code: -138 (Not supported)
[vost#0:0/mjpeg @ 0x385ae40] [enc:mjpeg @ 0x3878b80] Could not open encoder before EOF
[vf#0:0 @ 0x3830900] Terminating thread with return code -138 (Not supported)
[vost#0:0/mjpeg @ 0x385ae40] Task finished with error code: -28 (Invalid argument)
[vost#0:0/mjpeg @ 0x385ae40] Terminating thread with return code -28 (Invalid argument)
[out#0/image2 @ 0x3851580] Nothing was written into output file, because at least one of its streams received no packets.
frame= 0 fps=0.0 q=0.0 Lsize= 0KiB time=N/A bitrate=N/A speed=N/A 
Conversion failed!
Process finished with exit code -138.



I figured out the issue is color primaries
prim:reserved
, and the command can be updated to a working one by re-writing input primaries as following :

ffmpeg -i input.mp4 -vf "colorspace=all=bt709:iprimaries=bt709" -frames:v 1 out.jpg



However, I would like to compile ffmpeg.wasm so that it handles reserved primaries just like the one from homebrew.


Any idea what the compiled ffmpeg.wasm is missing ?


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VideoJS for HLS streaming not working on iOS
13 février 2024, par AamesI have a website where I stream audio using HLS (m3u8 playlist + ts files).
I use VideoJS 8.3.0 to handle the stream in the frontend side.
The streaming works in all devices (PC, Android, Mac) except in iOS where it works intermittently and often it blocks.


Here is my videojs initialization :


player = videojs('stream-id', {
 controls: false, autoplay: true, preload: 'auto',
 html5: {
 vhs: {overrideNative: false},
 nativeAudioTracks: true
 }
 });

...

player.src({ type: 'application/x-mpegURL', src: 'https://.../master.m3u8' });




And these are the headers of the m3u8 file :


#EXTM3U
#EXT-X-VERSION:3
#EXT-X-TARGETDURATION:10
#EXT-X-PROGRAM-DATE-TIME:2024-02-13T09:00:00Z
#EXT-X-MEDIA-SEQUENCE:0
#EXT-X-DISCONTINUITY
#EXTINF:10.007800,
master0.ts
#EXTINF:7.214989,
master1.ts
....



I use ffmpeg to create the playlist from mp3 files :


ffmpeg -i inputFileName -c:a aac -b:a 128k -ac 2 -f hls -hls_time 10 -preset ultrafast -map 0:a -flags -global_header -hls_list_size 0 -hls_flags append_list outputFileName




Am I doing something wrong ? Any help would be appreciated
Thanks


I tried this solution : Videojs HLS m3u8 files are not playing in iOS devices and safari browser but it does not work for me