
Recherche avancée
Autres articles (74)
-
Les autorisations surchargées par les plugins
27 avril 2010, parMediaspip core
autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs -
HTML5 audio and video support
13 avril 2011, parMediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
For older browsers the Flowplayer flash fallback is used.
MediaSPIP allows for media playback on major mobile platforms with the above (...) -
Support audio et vidéo HTML5
10 avril 2011MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...)
Sur d’autres sites (11313)
-
Exception thrown at 0x7C2E6005 (swscale-5.dll) in Video_playing.exe : 0xC0000005 : Access violation reading location 0xCCCCCD04 [closed]
11 mai 2020, par jatin yadavTrying to play a video using GLFW and FFmpeg on visual studio 2019 on windows 10.



Exception is thrown at sws_scale(sws_scaler_ctx, av_frame->data, av_frame->linesize, 0, av_frame->height, dest, dest_linesize) ; in the code. Don't know why this is occurred. Please Help !!



#include "video_reader.h"
#include 

bool video_reader_read_frame(VideoReaderState* state, uint8_t* frame_buffer, int64_t* pts) {

 // Unpack members of state
 auto& width = state->width;
 auto& height = state->height;
 auto& av_format_ctx = state->av_format_ctx;
 auto& av_codec_ctx = state->av_codec_ctx;
 auto& video_stream_index = state->video_stream_index;
 auto& av_frame = state->av_frame;
 auto& av_packet = state->av_packet;
 auto& sws_scaler_ctx = state->sws_scaler_ctx;

 // Decode one frame
 int response;
 while (av_read_frame(av_format_ctx, av_packet) >= 0) {
 if (av_packet->stream_index != video_stream_index) {
 av_packet_unref(av_packet);
 continue;
 }

 response = avcodec_send_packet(av_codec_ctx, av_packet);
 if (response < 0) {
 printf("Failed to decode packet: %s\n", response);
 return false;
 }

 response = avcodec_receive_frame(av_codec_ctx, av_frame);
 if (response == AVERROR(EAGAIN) || response == AVERROR_EOF) {
 av_packet_unref(av_packet);
 continue;
 }
 else if (response < 0) {
 printf("Failed to decode packet: %s\n", response);
 return false;
 }

 av_packet_unref(av_packet);
 break;
 }

 *pts = av_frame->pts;

 // Set up sws scaler
 if (!sws_scaler_ctx) {
 sws_scaler_ctx = sws_getContext(width, height, av_codec_ctx->pix_fmt,
 width, height, AV_PIX_FMT_RGB0,
 SWS_BILINEAR, NULL, NULL, NULL);
 }
 if (!sws_scaler_ctx) {
 printf("Couldn't initialize sw scaler\n");
 return false;
 }

 uint8_t* dest[4] = { frame_buffer, NULL, NULL, NULL };
 int dest_linesize[4] = { width * 4, 0, 0, 0 };
 sws_scale(sws_scaler_ctx, av_frame->data, av_frame->linesize, 0, av_frame->height, dest, dest_linesize);

 return true;
}



-
General outline for how to code a YouTube to MP4 converter that allows the user to trim the video according to time stamps they put in ? [closed]
16 mai 2023, par Vdog22I just need a general outline of how to do this.


I haven't started yet, but I'm not so experienced so I'm not sure how to go about this.


N/A



-
Revision 51a0e9825b : General cleanup in vp9_encodeframe.c. Change-Id : I446fca8aa11a4d4fc2b23d4b32348
7 mars 2014, par Dmitry KovalevChanged Paths :
Modify /vp9/encoder/vp9_encodeframe.c
General cleanup in vp9_encodeframe.c.Change-Id : I446fca8aa11a4d4fc2b23d4b32348b74d74d0202