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Librairies et binaires spécifiques au traitement vidéo et sonore
31 janvier 2010, parLes logiciels et librairies suivantes sont utilisées par SPIPmotion d’une manière ou d’une autre.
Binaires obligatoires FFMpeg : encodeur principal, permet de transcoder presque tous les types de fichiers vidéo et sonores dans les formats lisibles sur Internet. CF ce tutoriel pour son installation ; Oggz-tools : outils d’inspection de fichiers ogg ; Mediainfo : récupération d’informations depuis la plupart des formats vidéos et sonores ;
Binaires complémentaires et facultatifs flvtool2 : (...) -
Les statuts des instances de mutualisation
13 mars 2010, parPour des raisons de compatibilité générale du plugin de gestion de mutualisations avec les fonctions originales de SPIP, les statuts des instances sont les mêmes que pour tout autre objets (articles...), seuls leurs noms dans l’interface change quelque peu.
Les différents statuts possibles sont : prepa (demandé) qui correspond à une instance demandée par un utilisateur. Si le site a déjà été créé par le passé, il est passé en mode désactivé. publie (validé) qui correspond à une instance validée par un (...) -
Problèmes fréquents
10 mars 2010, parPHP et safe_mode activé
Une des principales sources de problèmes relève de la configuration de PHP et notamment de l’activation du safe_mode
La solution consiterait à soit désactiver le safe_mode soit placer le script dans un répertoire accessible par apache pour le site
Sur d’autres sites (4021)
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Revision 36889 : Le début d’une page d’info concernant la configuration de FFMPEG sur le ...
3 avril 2010, par kent1@… — LogLe début d’une page d’info concernant la configuration de FFMPEG sur le serveur.
On vire le PHP du squelette du formulaire de configuration
On prépare le passage aux pressets -
Building FFmpeg with NVIDIA GPU Hardware Acceleration in docker image, cannot load libnvcuvid.so.1 and libnvidia-encode.so.1
22 mars 2023, par konovificationI'm trying to build FFmpeg with NVIDIA GPU Hardware Acceleration following these instructions : https://docs.nvidia.com/video-technologies/video-codec-sdk/ffmpeg-with-nvidia-gpu/index.html#compiling-for-linux. The Docker image I'm using is
nvidia/cuda:12.0.1-devel-ubuntu20.04

Running the test command
ffmpeg -y -vsync 0 -hwaccel cuda -hwaccel_output_format cuda -i bbb.mp4 -c:a copy -c:v h264_nvenc -b:v 5M output.mp4, I get the following output :

ffmpeg version N-109965-ge50a02b0f6 Copyright (c) 2000-2023 the FFmpeg developers 
 built with gcc 9 (Ubuntu 9.4.0-1ubuntu1~20.04.1) 
 configuration: --enable-nonfree --enable-cuda-nvcc --enable-libnpp --extra-cflags=-I/usr/local/cuda/include --extra-ldflags=-L/usr/local/cuda/lib64 --disable-static --enable-shared 
 libavutil 58. 3.100 / 58. 3.100 
 libavcodec 60. 6.100 / 60. 6.100 
 libavformat 60. 4.100 / 60. 4.100 
 libavdevice 60. 2.100 / 60. 2.100 
 libavfilter 9. 4.100 / 9. 4.100 
 libswscale 7. 2.100 / 7. 2.100 
 libswresample 4. 11.100 / 4. 11.100 
-vsync is deprecated. Use -fps_mode 
Passing a number to -vsync is deprecated, use a string argument as described in the manual. 
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'bbb.mp4': 
 Metadata: 
 major_brand : isom 
 minor_version : 1 
 compatible_brands: isomavc1 
 creation_time : 2013-12-16T17:44:39.000000Z 
 title : Big Buck Bunny, Sunflower version 
 artist : Blender Foundation 2008, Janus Bager Kristensen 2013 
 comment : Creative Commons Attribution 3.0 - http://bbb3d.renderfarming.net 
 genre : Animation 
 composer : Sacha Goedegebure 
 Duration: 00:10:34.60, start: 0.000000, bitrate: 3481 kb/s 
 Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], 2998 kb/s, 30 fps, 30 tbr, 30k tbn (default)
 Metadata: 
 creation_time : 2013-12-16T17:44:39.000000Z 
 handler_name : GPAC ISO Video Handler 
 vendor_id : [0][0][0][0] 
 Stream #0:1[0x2](und): Audio: mp3 (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 160 kb/s (default) 
 Metadata: 
 creation_time : 2013-12-16T17:44:42.000000Z 
 handler_name : GPAC ISO Audio Handler 
 vendor_id : [0][0][0][0] 
 Stream #0:2[0x3](und): Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, 5.1(side), fltp, 320 kb/s (default) 
 Metadata: 
 creation_time : 2013-12-16T17:44:42.000000Z 
 handler_name : GPAC ISO Audio Handler 
 vendor_id : [0][0][0][0] 
 Side data: 
 audio service type: main 
Stream mapping: 
 Stream #0:0 -> #0:0 (h264 (native) -> h264 (h264_nvenc)) 
 Stream #0:2 -> #0:1 (copy) 
Press [q] to stop, [?] for help 
[h264 @ 0x55bd878c2d80] Cannot load libnvcuvid.so.1 
[h264 @ 0x55bd878c2d80] Failed loading nvcuvid. 
[h264 @ 0x55bd878c2d80] Failed setup for format cuda: hwaccel initialisation returned error. 
[h264_nvenc @ 0x55bd86f5e680] Cannot load libnvidia-encode.so.1 
[h264_nvenc @ 0x55bd86f5e680] The minimum required Nvidia driver for nvenc is 520.56.06 or newer 
[vost#0:0/h264_nvenc @ 0x55bd86f5e1c0] Error initializing output stream: Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height
Conversion failed! 


Output from
nvidia-smi:

+-----------------------------------------------------------------------------+
| NVIDIA-SMI 525.85.05 Driver Version: 525.85.05 CUDA Version: 12.0 |
|-------------------------------+----------------------+----------------------+
| GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |
| | | MIG M. |
|===============================+======================+======================|
| 0 NVIDIA GeForce ... Off | 00000000:01:00.0 On | N/A |
| 27% 43C P8 12W / 250W | 500MiB / 11264MiB | 1% Default |
| | | N/A |
+-------------------------------+----------------------+----------------------+
 
+-----------------------------------------------------------------------------+
| Processes: |
| GPU GI CI PID Type Process name GPU Memory |
| ID ID Usage |
|=============================================================================|
+-----------------------------------------------------------------------------+


The shared libraries are not part of the docker image. What are my options to add them ?


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Generating DASH manifest with ffmpeg works in Docker exec shell but not in os.exec golang
22 février 2023, par InquisitorI am trying to generate a DASH manifest with ffmpeg using this command


/usr/bin/ffmpeg -f webm_dash_manifest -i ./480.webm -f webm_dash_manifest -i ./audio.webm -c copy -map 0:0 -map 1:0 -y -f webm_dash_manifest -adaptation_sets "id=0,streams=0 id=1,streams=1" ./manifest.mpd -loglevel repeat+level+verbose


I run this in go, in a docker container as shown :


func runFFmpeg(arguments []string) {
 arguments = append(arguments, "-loglevel", "repeat+level+verbose")
 cmd := exec.Command("ffmpeg", arguments...)

 fmt.Printf("cmd: %v\n", cmd)

 var out bytes.Buffer
 var stderr bytes.Buffer
 cmd.Stdout = &out
 cmd.Stderr = &stderr
 err := cmd.Run()

 if err != nil {
 log.Println(err)
 log.Println(stderr.String())
 }
}
runFFmpeg([]string{"-f", "webm_dash_manifest", "-i", "./480.webm", "-f", "webm_dash_manifest", "-i", "./audio.webm", "-c", "copy", "-map", "0:0", "-map", "1:0", "-y", "-f", "webm_dash_manifest", "-adaptation_sets", "\"id=0,streams=0 id=1,streams=1\"", "./manifest.mpd"})


But I get this output :


cmd: /usr/bin/ffmpeg -f webm_dash_manifest -i ./480.webm -f webm_dash_manifest -i ./audio.webm -c copy -map 0:0 -map 1:0 -y -copy_unknown -f webm_dash_manifest -adaptation_sets "id=0,streams=0 id=1,streams=1" ./manifest.mpd -loglevel repeat+level+verbose
 2023/02/22 04:45:17 exit status 1
 2023/02/22 04:45:17 [info] ffmpeg version 5.1.2 Copyright (c) 2000-2022 the FFmpeg developers
 [info] built with gcc 12.2.1 (Alpine 12.2.1_git20220924-r3) 20220924
 [info] configuration: --prefix=/usr --enable-avfilter --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-gnutls --enable-gpl --enable-libass --enable-libmp3lame --enable-libpulse --enable-libvorbis --enable-libvpx --enable-libxvid --enable-libx264 --enable-libx265 --enable-libtheora --enable-libv4l2 --enable-libdav1d --enable-lto --enable-postproc --enable-pic --enable-pthreads --enable-shared --enable-libxcb --enable-librist --enable-libsrt --enable-libssh --enable-libvidstab --disable-stripping --disable-static --disable-librtmp --disable-lzma --enable-libaom --enable-libopus --enable-libsoxr --enable-libwebp --enable-vaapi --enable-vdpau --enable-vulkan --enable-libdrm --enable-libzmq --optflags=-O2 --disable-debug --enable-libsvtav1
 [info] libavutil 57. 28.100 / 57. 28.100
 [info] libavcodec 59. 37.100 / 59. 37.100
 [info] libavformat 59. 27.100 / 59. 27.100
 [info] libavdevice 59. 7.100 / 59. 7.100
 [info] libavfilter 8. 44.100 / 8. 44.100
 [info] libswscale 6. 7.100 / 6. 7.100
 [info] libswresample 4. 7.100 / 4. 7.100
 [info] libpostproc 56. 6.100 / 56. 6.100
 [webm_dash_manifest @ 0x7fcec2836100] [warning] Could not find codec parameters for stream 0 (Video: vp9, 1 reference frame, none(tv, progressive, left), 640x480): unspecified pixel format
 Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
 [info] Input #0, webm_dash_manifest, from './480.webm':
 [info] Metadata:
 [info] title : Big Buck Bunny, Sunflower version
 [info] GENRE : Animation
 [info] MAJOR_BRAND : isom
 [info] MINOR_VERSION : 1
 [info] COMPATIBLE_BRANDS: isomavc1
 [info] COMPOSER : Sacha Goedegebure
 [info] ARTIST : Blender Foundation 2008, Janus Bager Kristensen 2013
 [info] COMMENT : Creative Commons Attribution 3.0 - http://bbb3d.renderfarming.net
 [info] ENCODER : Lavf59.27.100
 [info] Duration: 00:10:34.60, bitrate: 352 kb/s
 [info] Stream #0:0: Video: vp9, 1 reference frame, none(tv, progressive, left), 640x480, SAR 853:640 DAR 853:480, 30 fps, 30 tbr, 1k tbn (default)
 [info] Metadata:
 [info] HANDLER_NAME : GPAC ISO Video Handler
 [info] VENDOR_ID : [0][0][0][0]
 [info] ENCODER : Lavc59.37.100 libvpx-vp9
 [info] DURATION : 00:10:34.600000000
 [info] webm_dash_manifest_duration: 634600
 [info] webm_dash_manifest_initialization_range: 889
 [info] webm_dash_manifest_file_name: 480.webm
 [info] webm_dash_manifest_track_number: 1
 [info] webm_dash_manifest_cues_start: 27924928
 [info] webm_dash_manifest_cues_end: 27927508
 [info] webm_dash_manifest_bandwidth: 738287
 [info] webm_dash_manifest_cluster_keyframe: 1
 [info] webm_dash_manifest_cue_timestamps: 67,5067,10067,15067,20067,25067,30067,35067,40067,45067,50067,55067,60067,65067,70067,75067,80067,85067,90067,95067,100067,105067,110067,115067,120067,125067,130067,135067,140067,145067,150067,155067,160067,165067,170067,175067,180067,185067,190067,195067
 [info] Input #1, webm_dash_manifest, from './audio.webm':
 [info] Metadata:
 [info] title : Big Buck Bunny, Sunflower version
 [info] GENRE : Animation
 [info] MAJOR_BRAND : isom
 [info] MINOR_VERSION : 1
 [info] COMPATIBLE_BRANDS: isomavc1
 [info] COMPOSER : Sacha Goedegebure
 [info] ARTIST : Blender Foundation 2008, Janus Bager Kristensen 2013
 [info] COMMENT : Creative Commons Attribution 3.0 - http://bbb3d.renderfarming.net
 [info] ENCODER : Lavf59.27.100
 [info] Duration: 00:05:35.91, bitrate: 120 kb/s
 [info] Stream #1:0: Audio: vorbis, 48000 Hz, 5.1, fltp (default)
 [info] Metadata:
 [info] HANDLER_NAME : GPAC ISO Audio Handler
 [info] VENDOR_ID : [0][0][0][0]
 [info] ENCODER : Lavc59.37.100 libvorbis
 [info] DURATION : 00:05:35.907000000
 [info] webm_dash_manifest_duration: 335907
 [info] webm_dash_manifest_initialization_range: 7411
 [info] webm_dash_manifest_file_name: audio.webm
 [info] webm_dash_manifest_track_number: 1
 [info] webm_dash_manifest_cues_start: 5047497
 [info] webm_dash_manifest_cues_end: 5048846
 [info] webm_dash_manifest_bandwidth: 126994
 [info] webm_dash_manifest_cluster_keyframe: 1
 [info] webm_dash_manifest_cue_timestamps: 0,4986,9980,14962,19959,24956,29946,34930,39916,44911,49908,54892,59874,64868,69858,74858,79855,84847,89834,94834,99826,104826,109826,114818,119812,124799,129780,134770,139756,144743,149727,154719,159714,164706,169698,174687,179668,184667,189658,194650,19
 HERE'S THE ERROR --> [error] Could not write header for output file #0 (incorrect codec parameters ?): Operation not permitted
 [error] Error initializing output stream 0:1 -- 
 [info] Stream mapping:
 [info] Stream #0:0 -> #0:0 (copy)
 [info] Stream #1:0 -> #0:1 (copy)
 [error] 
 [AVIOContext @ 0x7fcebe23a840] [verbose] Statistics: 0 bytes written, 0 seeks, 0 writeouts
 [AVIOContext @ 0x7fcebe23a980] [verbose] Statistics: 5940786 bytes read, 133 seeks
 [AVIOContext @ 0x7fcebe23acc0] [verbose] Statistics: 2260628 bytes read, 72 seeks


It works perfectly however if I run it within docker exec (exec into the container and run the command in bash). Also, note in the last output that the command is well formed when I print it out from go. File permissions are also not the problem since the command to create the video variants works with os.exec i.e


runFFmpeg([]string{"-i", originalFilePath, "-c:v", "libvpx-vp9", "-keyint_min", "150", "-g", "150", "-tile-columns", "4", "-frame-parallel", "1", "-f", "webm", "-dash", "1", "-an", "-vf", fmt.Sprintf("scale=%s:%s", width, height), "-b:v", bitRate, "-dash", "1", "-y", destinationFilePath})


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