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Rennes Emotion Map 2010-11
19 octobre 2011, par
Mis à jour : Juillet 2013
Langue : français
Type : Texte
Autres articles (97)
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Configuration spécifique d’Apache
4 février 2011, parModules spécifiques
Pour la configuration d’Apache, il est conseillé d’activer certains modules non spécifiques à MediaSPIP, mais permettant d’améliorer les performances : mod_deflate et mod_headers pour compresser automatiquement via Apache les pages. Cf ce tutoriel ; mode_expires pour gérer correctement l’expiration des hits. Cf ce tutoriel ;
Il est également conseillé d’ajouter la prise en charge par apache du mime-type pour les fichiers WebM comme indiqué dans ce tutoriel.
Création d’un (...) -
Organiser par catégorie
17 mai 2013, parDans MédiaSPIP, une rubrique a 2 noms : catégorie et rubrique.
Les différents documents stockés dans MédiaSPIP peuvent être rangés dans différentes catégories. On peut créer une catégorie en cliquant sur "publier une catégorie" dans le menu publier en haut à droite ( après authentification ). Une catégorie peut être rangée dans une autre catégorie aussi ce qui fait qu’on peut construire une arborescence de catégories.
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Submit bugs and patches
13 avril 2011Unfortunately a software is never perfect.
If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
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Sur d’autres sites (6636)
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What is White Label Analytics ? Everything You Need to Know
6 février 2024, par Erin -
Why does every encoded frame's size increase after I had use to set one frame to be key in intel qsv of ffmpeg
22 avril 2021, par TONYI used intel's qsv to encode h264 video in ffmpeg. My av codec context settings is like as below :


m_ctx->width = m_width;
 m_ctx->height = m_height;
 m_ctx->time_base = { 1, (int)fps };
 m_ctx->qmin = 10;
 m_ctx->qmax = 35;
 m_ctx->gop_size = 3000;
 m_ctx->max_b_frames = 0;
 m_ctx->has_b_frames = false;
 m_ctx->refs = 2;
 m_ctx->slices = 0;
 m_ctx->codec_id = m_encoder->id;
 m_ctx->codec_type = AVMEDIA_TYPE_VIDEO;
 m_ctx->pix_fmt = m_h264InputFormat;
 m_ctx->compression_level = 4;
 m_ctx->flags &= ~AV_CODEC_FLAG_CLOSED_GOP;
 AVDictionary *param = nullptr;
 av_dict_set(&param, "idr_interval", "0", 0);
 av_dict_set(&param, "async_depth", "1", 0);
 av_dict_set(&param, "forced_idr", "1", 0);



and in the encoding, I set the AVFrame to be AV_PICTURE_TYPE_I when key frame is needed :


if(key_frame){
 encodeFrame->pict_type = AV_PICTURE_TYPE_I;
 }else{
 encodeFrame->pict_type = AV_PICTURE_TYPE_NONE;
 }
 avcodec_send_frame(m_ctx, encodeFrame);
 avcodec_receive_packet(m_ctx, m_packet);
 std::cerr<<"packet size is "<size<<",is key frame "<code>


The strange phenomenon is that if I had set one frame to AV_PICTURE_TYPE_I, then every encoded frame's size after the key frame would increase. If I change the h264 encoder to x264, then it's ok.


The packet size is as below before I call "encodeFrame->pict_type = AV_PICTURE_TYPE_I" :


packet size is 26839
packet size is 2766
packet size is 2794
packet size is 2193
packet size is 1820
packet size is 2542
packet size is 2024
packet size is 1692
packet size is 2095
packet size is 2550
packet size is 1685
packet size is 1800
packet size is 2276
packet size is 1813
packet size is 2206
packet size is 2745
packet size is 2334
packet size is 2623
packet size is 2055



If I call "encodeFrame->pict_type = AV_PICTURE_TYPE_I", then the packet size is as below :


packet size is 23720,is key frame 1
packet size is 23771,is key frame 0
packet size is 23738,is key frame 0
packet size is 23752,is key frame 0
packet size is 23771,is key frame 0
packet size is 23763,is key frame 0
packet size is 23715,is key frame 0
packet size is 23686,is key frame 0
packet size is 23829,is key frame 0
packet size is 23774,is key frame 0
packet size is 23850,is key frame 0



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ffmepg Video Encoding got a error with "invalid plane data size"
28 octobre 2020, par Mrguoffmpeg version:4.0.3 ; video size : 611G ; Duration:01:34:03


- 

- encoding command is :




ffmpeg -i 2131.MOV -vcodec libx264 -preset ultrafast -pix_fmt yuv420p -b:v 600k -vf scale=640 :-1 small.mp4


- 

- video info :




ffprobe version 4.0.3 Copyright (c) 2007-2018 the FFmpeg developers
 built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-17)
 configuration: --enable-shared --enable-libx264 --enable-gpl
 libavutil 56. 14.100 / 56. 14.100
 libavcodec 58. 18.100 / 58. 18.100
 libavformat 58. 12.100 / 58. 12.100
 libavdevice 58. 3.100 / 58. 3.100
 libavfilter 7. 16.100 / 7. 16.100
 libswscale 5. 1.100 / 5. 1.100
 libswresample 3. 1.100 / 3. 1.100
 libpostproc 55. 1.100 / 55. 1.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0xca7ac0] overread end of atom '�mak' by 2 bytes
[mov,mp4,m4a,3gp,3g2,mj2 @ 0xca7ac0] overread end of atom '�swr' by 3 bytes
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '04487162221cb76b0a4465037f4a3d7d.MOV':
 Metadata:
 major_brand : qt 
 minor_version : 537199360
 compatible_brands: qt 
 creation_time : 2024-04-16T19:59:27.000000Z
 make : Atomos
 make-eng : Atomos
 encoder : ShogunSumo - 9.11Cn 
 encoder-eng : ShogunSumo - 9.11Cn 
 com.atomos.hdr.gamut: Rec709
 com.atomos.hdr.gamma: Rec709
 com.apple.proapps.image.{TIFF}.Make: Atomos
 com.apple.proapps.image.{TIFF}.Model: ShogunSumo
 com.apple.proapps.image.{TIFF}.Software: 9.11Cn
 timecode : 00:00:00:00
 Duration: 01:34:03.86, start: 0.000000, bitrate: 929321 kb/s
 Stream #0:0(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, 4 channels, s32 (24 bit), 4608 kb/s (default)
 Metadata:
 creation_time : 2024-04-16T19:59:27.000000Z
 Stream #0:1(eng): Video: prores (apcn / 0x6E637061), yuv422p10le(bt709, progressive), 3840x2160, 924704 kb/s, SAR 1:1 DAR 16:9, 50 fps, 50 tbr, 5k tbn, 5k tbc (default)
 Metadata:
 creation_time : 2024-04-16T19:59:27.000000Z
 encoder : Apple ProRes 422
 Stream #0:2(eng): Data: none (tmcd / 0x64636D74) (default)
 Metadata:
 creation_time : 2024-04-16T19:59:27.000000Z
 timecode : 00:00:00:00
Unsupported codec with id 0 for input stream 2



- 

- log with error :




frame=166986 fps=9.8 q=24.0 size= 350976kB time=00:55:39.46 bitrate= 861.0kbits/s speed=0.196x 
frame=166991 fps=9.8 q=24.0 size= 350976kB time=00:55:39.56 bitrate= 861.0kbits/s speed=0.196x 
[prores @ 0x94f840] invalid plane data size
 Last message repeated 85 times
[prores @ 0x94f840] ac tex damaged 1024, 1024
[prores @ 0x94f840] invalid plane data size
 Last message repeated 1723 times
frame=166997 fps=9.8 q=24.0 size= 350976kB time=00:55:39.68 bitrate= 860.9kbits/s speed=0.196x 
[prores @ 0x94f840] invalid frame header
Error while decoding stream #0:1: Invalid data found when processing input



how can I solve the problem ?