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Autres articles (81)
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Multilang : améliorer l’interface pour les blocs multilingues
18 février 2011, parMultilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela. -
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.
Lors de la publication prochaine d’un document, la nouvelle catégorie créée sera proposée (...) -
Le plugin : Podcasts.
14 juillet 2010, parLe problème du podcasting est à nouveau un problème révélateur de la normalisation des transports de données sur Internet.
Deux formats intéressants existent : Celui développé par Apple, très axé sur l’utilisation d’iTunes dont la SPEC est ici ; Le format "Media RSS Module" qui est plus "libre" notamment soutenu par Yahoo et le logiciel Miro ;
Types de fichiers supportés dans les flux
Le format d’Apple n’autorise que les formats suivants dans ses flux : .mp3 audio/mpeg .m4a audio/x-m4a .mp4 (...)
Sur d’autres sites (2605)
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ffmpeg use gpu to encode mpeg4 to ts/m3u8 [closed]
14 novembre 2024, par danielRICADOusing ffmpeg I want to trim and transcode a mpeg4 from ts / m3u8


std::string ffmpeg_command = "ffmpeg -hwaccel drm -i " + output_dir + input_file +
 " -ss 00:00:00.00 -t 31 -c:v " + codec + " -b:v " + std::to_string(bitrate) +
 " -vf scale=" + std::to_string(width) + "x" + std::to_string(height) +
 " -hls_time " + std::to_string(30) + " -hls_list_size 0 -hls_segment_filename " +
 ts_file_pattern + " -f hls " + m3u8_file;


I wanted to choose between codecs based on the system, if gpu is avaiable I'd like to opt to use it, right now I just check if the codec is available


bool is_h264_v4l2m2m_available() {
 std::string result = exec_command("ffmpeg -encoders 2>&1");
 return result.find("h264_v4l2m2m") != std::string::npos;
}


if it is a I wanted to move that process over to the gpu, not just use libx264. Here is the error log. Studying hard on the solution but wold super apperciate any expert advice.


other considerations are - runs in a docker container on a pi5, pibian on the host apline on in the container, container runs in privledged mode


2024-11-14 15:18:41 [INFO]: assigned codec: h264_v4l2m2m
2024-11-14 15:18:41 ffmpeg version 6.1.1 Copyright (c) 2000-2023 the FFmpeg developers
2024-11-14 15:18:41 built with gcc 13.2.1 (Alpine 13.2.1_git20240309) 20240309
2024-11-14 15:18:41 configuration: --prefix=/usr --disable-librtmp --disable-lzma --disable-static --disable-stripping --enable-avfilter --enable-gpl --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libdrm --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libharfbuzz --enable-libmp3lame --enable-libopenmpt --enable-libopus --enable-libplacebo --enable-libpulse --enable-librav1e --enable-librist --enable-libsoxr --enable-libsrt --enable-libssh --enable-libtheora --enable-libv4l2 --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxml2 --enable-libxvid --enable-libzimg --enable-libzmq --enable-lto=auto --enable-lv2 --enable-openssl --enable-pic --enable-postproc --enable-pthreads --enable-shared --enable-vaapi --enable-vdpau --enable-version3 --enable-vulkan --optflags=-O3 --enable-libjxl --enable-libsvtav1 --enable-libvpl
2024-11-14 15:18:41 libavutil 58. 29.100 / 58. 29.100
2024-11-14 15:18:41 libavcodec 60. 31.102 / 60. 31.102
2024-11-14 15:18:41 libavformat 60. 16.100 / 60. 16.100
2024-11-14 15:18:41 libavdevice 60. 3.100 / 60. 3.100
2024-11-14 15:18:41 libavfilter 9. 12.100 / 9. 12.100
2024-11-14 15:18:41 libswscale 7. 5.100 / 7. 5.100
2024-11-14 15:18:41 libswresample 4. 12.100 / 4. 12.100
2024-11-14 15:18:41 libpostproc 57. 3.100 / 57. 3.100
2024-11-14 15:18:42 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/app/client-data/camera-output/7ea3cbef-4da0-11ed-bdcc-baf70a43c072/1731550687270.mp4':
2024-11-14 15:18:42 Metadata:
2024-11-14 15:18:42 major_brand : isom
2024-11-14 15:18:42 minor_version : 512
2024-11-14 15:18:42 compatible_brands: isomiso2avc1mp41
2024-11-14 15:18:42 encoder : Lavf60.16.100
2024-11-14 15:18:42 Duration: 00:00:31.33, start: 0.000000, bitrate: 678 kb/s
2024-11-14 15:18:42 Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(progressive), 1024x1024, 677 kb/s, 15 fps, 15 tbr, 15360 tbn (default)
2024-11-14 15:18:42 Metadata:
2024-11-14 15:18:42 handler_name : VideoHandler
2024-11-14 15:18:42 vendor_id : [0][0][0][0]
2024-11-14 15:18:42 [AVFormatContext @ 0x7f9254dcb4c0] Unable to choose an output format for '678000'; use a standard extension for the filename or specify the format manually.
2024-11-14 15:18:42 [out#0 @ 0x7f9254d70700] Error initializing the muxer for 678000: Invalid argument
2024-11-14 15:18:42 Error opening output file 678000.
2024-11-14 15:18:42 Error opening output files: Invalid argument
2024-11-14 15:18:42 [ERROR]: Failed to generate .ts file for: 1731550687270.mp4


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Revision 30149 : On ajoute un champs "extension" dans la table spip_spipmotion_attentes ...
24 juillet 2009, par kent1@… — LogOn ajoute un champs "extension" dans la table spip_spipmotion_attentes pour gérer l’encodage multiple
On nécessite spip-bonux dorénavant -
Use SDL2 play yuv file but actually no display [closed]
14 juin 2024, par guan xiI use ffmpeg to demux and decode the media file, and then use SDL2 to play the raw data, everything is ok. no error no warning, but SDL2 windows does not dispaly video content.
All i know is frame dts is ordered in SDL2 play queue and data is good.


void VideoPlay::play_video() {
 while (is_running_) {
 refresh_loop_wait_event(&event_);

 switch (event_.type) {
 case SDL_KEYDOWN:
 if (event_.key.keysym.sym == SDLK_q) {
 LOG_INFO("Q quit");
 is_running_ = false;
 frame_queue_->abort();
 }
 break;
 case SDL_QUIT:
 LOG_INFO("SDL_QUIT");
 is_running_ = false;
 frame_queue_->abort();
 break;

 default:
 break;
 }
 }
}

void VideoPlay::refresh_loop_wait_event(SDL_Event *event) {
 SDL_PumpEvents();

 while (
 !SDL_PeepEvents(event, 1, SDL_GETEVENT, SDL_FIRSTEVENT, SDL_LASTEVENT)) {
 video_refresh();
 SDL_PumpEvents();
 }
}

void VideoPlay::video_refresh() {
 int ret = 0;
 frame_queue_->pop(frame_);
 if (!frame_) {
 LOG_ERROR("frame_queue_ pop failed.");
 is_running_ = false;
 frame_queue_->abort();
 return;
 }

 rect_.x = 0;
 rect_.y = 0;
 rect_.w = video_width_;
 rect_.h = video_height_;

 ret = SDL_UpdateYUVTexture(
 texture_, &rect_, frame_->data[0], frame_->linesize[0], frame_->data[1],
 frame_->linesize[1], frame_->data[2], frame_->linesize[2]);

 LOG_DEBUG("frame pts: %ld, tot size: %d, Y size: %d, U size: %d, V size: %d",
 frame_->pts, video_width_ * video_height_, frame_->linesize[0],
 frame_->linesize[1], frame_->linesize[2]);
 if (ret != 0) {
 LOG_ERROR("SDL_UpdateYUVTexture failed. %s", SDL_GetError());
 is_running_ = false;
 frame_queue_->abort();
 return;
 }
 ret = SDL_RenderClear(renderer_);
 if (ret != 0) {
 LOG_ERROR("SDL_RenderClear failed. %s", SDL_GetError());
 is_running_ = false;
 frame_queue_->abort();
 return;
 }
 ret = SDL_RenderCopy(renderer_, texture_, nullptr, &rect_);
 if (ret != 0) {
 LOG_ERROR("SDL_RenderCopy failed. %s", SDL_GetError());
 is_running_ = false;
 frame_queue_->abort();
 return;
 }
 SDL_RenderPresent(renderer_);
 SDL_Delay(10);
 av_frame_free(&frame_);
 frame_ = nullptr;
}


log file out put


~/A_CODES/ffmpeg_official/cmake-build-debug ᐅ cat sdlplay.log
[info] [2024-06-14 15:39:33] [/home/xiguan/A_CODES/ffmpeg_official/SDLPlayer/core/sp_demux.cpp:50 init] audio idx 1 video idx 0
[info] [2024-06-14 15:39:33] [/home/xiguan/A_CODES/ffmpeg_official/SDLPlayer/core/sp_decode.cpp:39 init] codec: h264
[info] [2024-06-14 15:39:33] [/home/xiguan/A_CODES/ffmpeg_official/SDLPlayer/core/sp_decode.cpp:68 init] yuv fmt: yuv420p
[debug] [2024-06-14 15:39:33] [/home/xiguan/A_CODES/ffmpeg_official/SDLPlayer/sdl/video_play.cpp:100 play_video] event 0x1100
[debug] [2024-06-14 15:39:33] [/home/xiguan/A_CODES/ffmpeg_official/SDLPlayer/sdl/video_play.cpp:100 play_video] event 0x1100
[debug] [2024-06-14 15:39:33] [/home/xiguan/A_CODES/ffmpeg_official/SDLPlayer/sdl/video_play.cpp:100 play_video] event 0x200
[debug] [2024-06-14 15:39:33] [/home/xiguan/A_CODES/ffmpeg_official/SDLPlayer/sdl/video_play.cpp:100 play_video] event 0x200
[debug] [2024-06-14 15:39:33] [/home/xiguan/A_CODES/ffmpeg_official/SDLPlayer/sdl/video_play.cpp:100 play_video] event 0x200
[debug] [2024-06-14 15:39:33] [/home/xiguan/A_CODES/ffmpeg_official/SDLPlayer/sdl/video_play.cpp:100 play_video] event 0x200
[debug] [2024-06-14 15:39:33] [/home/xiguan/A_CODES/ffmpeg_official/SDLPlayer/sdl/video_play.cpp:100 play_video] event 0x200
[debug] [2024-06-14 15:39:33] [/home/xiguan/A_CODES/ffmpeg_official/SDLPlayer/sdl/video_play.cpp:100 play_video] event 0x300
[debug] [2024-06-14 15:39:33] [/home/xiguan/A_CODES/ffmpeg_official/SDLPlayer/sdl/video_play.cpp:100 play_video] event 0x300
[debug] [2024-06-14 15:39:33] [/home/xiguan/A_CODES/ffmpeg_official/SDLPlayer/sdl/video_play.cpp:100 play_video] event 0x301
[debug] [2024-06-14 15:39:33] [/home/xiguan/A_CODES/ffmpeg_official/SDLPlayer/sdl/video_play.cpp:100 play_video] event 0x200
[debug] [2024-06-14 15:39:33] [/home/xiguan/A_CODES/ffmpeg_official/SDLPlayer/sdl/video_play.cpp:151 video_refresh] frame pts: 67, tot size: 82944, Y size: 384, U size: 192, V size: 192
[debug] [2024-06-14 15:39:33] [/home/xiguan/A_CODES/ffmpeg_official/SDLPlayer/sdl/video_play.cpp:151 video_refresh] frame pts: 133, tot size: 82944, Y size: 384, U size: 192, V size: 192
[debug] [2024-06-14 15:39:33] [/home/xiguan/A_CODES/ffmpeg_official/SDLPlayer/sdl/video_play.cpp:151 video_refresh] frame pts: 200, tot size: 82944, Y size: 384, U size: 192, V size: 192
[debug] [2024-06-14 15:39:33] [/home/xiguan/A_CODES/ffmpeg_official/SDLPlayer/sdl/video_play.cpp:151 video_refresh] frame pts: 267, tot size: 82944, Y size: 384, U size: 192, V size: 192
[debug] [2024-06-14 15:39:33] [/home/xiguan/A_CODES/ffmpeg_official/SDLPlayer/sdl/video_play.cpp:151 video_refresh] frame pts: 333, tot size: 82944, Y size: 384, U size: 192, V size: 192
[debug] [2024-06-14 15:39:33] [/home/xiguan/A_CODES/ffmpeg_official/SDLPlayer/sdl/video_play.cpp:151 video_refresh] frame pts: 400, tot size: 82944, Y size: 384, U size: 192, V size: 192
[debug] [2024-06-14 15:39:33] [/home/xiguan/A_CODES/ffmpeg_official/SDLPlayer/sdl/video_play.cpp:151 video_refresh] frame pts: 467, tot size: 82944, Y size: 384, U size: 192, V size: 192
[debug] [2024-06-14 15:39:33] [/home/xiguan/A_CODES/ffmpeg_official/SDLPlayer/sdl/video_play.cpp:151 video_refresh] frame pts: 533, tot size: 82944, Y size: 384, U size: 192, V size: 192
[debug] [2024-06-14 15:39:33] [/home/xiguan/A_CODES/ffmpeg_official/SDLPlayer/sdl/video_play.cpp:151 video_refresh] frame pts: 600, tot size: 82944, Y size: 384, U size: 192, V size: 192
[debug] [2024-06-14 15:39:33] [/home/xiguan/A_CODES/ffmpeg_official/SDLPlayer/sdl/video_play.cpp:151 video_refresh] frame pts: 667, tot size: 82944, Y size: 384, U size: 192, V size: 192
[debug] [2024-06-14 15:39:33] [/home/xiguan/A_CODES/ffmpeg_official/SDLPlayer/sdl/video_play.cpp:151 video_refresh] frame pts: 733, tot size: 82944, Y size: 384, U size: 192, V size: 192
[debug] [2024-06-14 15:39:33] [/home/xiguan/A_CODES/ffmpeg_official/SDLPlayer/sdl/video_play.cpp:151 video_refresh] frame pts: 800, tot size: 82944, Y size: 384, U size: 192, V size: 192
[debug] [2024-06-14 15:39:33] [/home/xiguan/A_CODES/ffmpeg_official/SDLPlayer/sdl/video_play.cpp:151 video_refresh] frame pts: 867, tot size: 82944, Y size: 384, U size: 192, V size: 192
[debug] [2024-06-14 15:39:33] [/home/xiguan/A_CODES/ffmpeg_official/SDLPlayer/sdl/video_play.cpp:151 video_refresh] frame pts: 933, tot size: 82944, Y size: 384, U size: 192, V size: 192


I try to handle SDL2 events correctly as ffplay but no use.
I also gdb to search anything error but nothing happen too.


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