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Richard Stallman et le logiciel libre
19 octobre 2011, par
Mis à jour : Mai 2013
Langue : français
Type : Texte
Autres articles (94)
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MediaSPIP 0.1 Beta version
25 avril 2011, parMediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
The zip file provided here only contains the sources of MediaSPIP in its standalone version.
To get a working installation, you must manually install all-software dependencies on the server.
If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...) -
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. -
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 (...)
Sur d’autres sites (9963)
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Revision 7ab9a9587b : Remove Wextra warnings from vp9_sad.c As a side-effect, the max_sad check is re
13 mai 2014, par Deb MukherjeeChanged Paths :
Modify /test/sad_test.cc
Modify /vp8/common/rtcd_defs.pl
Modify /vp8/common/sad_c.c
Modify /vp8/common/variance.h
Modify /vp8/encoder/mcomp.c
Modify /vp8/encoder/rdopt.c
Modify /vp9/common/vp9_rtcd_defs.pl
Modify /vp9/encoder/vp9_encodeframe.c
Modify /vp9/encoder/vp9_mbgraph.c
Modify /vp9/encoder/vp9_mcomp.c
Modify /vp9/encoder/vp9_rdopt.c
Modify /vp9/encoder/vp9_sad.c
Modify /vp9/encoder/vp9_variance.h
Remove Wextra warnings from vp9_sad.cAs a side-effect, the max_sad check is removed from the
C-implementation of VP8, for consistency with VP9, and to
ensure that the SAD tests common to VP8/VP9 pass.
That will make the VP8 C implementation of sad a little slower
but given that is rarely used in practice, the impact will be
minimal.Change-Id : I7f43089fdea047fbf1862e40c21e4715c30f07ca
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Why is my DSharpPlus Slash Command not playing my desired sound using FFMPEG in C# ?
19 mai 2023, par IngeniousThoughtsI'm having a problem with my ffmpeg setup the commands work fine but my play command doesn't play my desired sound.


//The command.
 [SlashCommand("play", "plays a sound in a voice channel.")]
 public async Task HowlCommand(InteractionContext ctx, [Choice("ChoiceName", "C:\\My\\Program\\Directory\\Name\\MySound.mp3")]
 [Option("Sound", "Please select a Sound")] string filepath)
 {
 //Creates a slash command used response.
 //Also removes the error message.
 await ctx.CreateResponseAsync(InteractionResponseType.ChannelMessageWithSource, new DiscordInteractionResponseBuilder()
 .WithContent("Playing sound in voice channel. Please wait just a moment!"));
 
 //Checks if the user is not a bot to send the message.
 if (ctx.Member.IsBot)
 {
 return;
 }
 else
 {
 if(filepath != "C:\\My\\Program\\Directory\\Name\\MySound.mp3")
 {
 var embedmessage = new DiscordMessageBuilder()
 .AddEmbed(new DiscordEmbedBuilder()
 
 .WithAuthor("BotName", null, ctx.Client.CurrentApplication.Icon)
 .WithTitle("Please select the following sound to play:")
 .WithImageUrl(ctx.Client.CurrentApplication.Icon)
 .WithFooter("VoiceChannel Error.", "ImageURL.png")
 .WithTimestamp(DateTime.Now)
 .Build()
 
 );
 
 //Makes the command wait 5 seconds before sending the rest of the command data.
 await Task.Delay(TimeSpan.FromSeconds(5));
 
 //Sends the embed in a message.
 await ctx.Channel.SendMessageAsync(embedmessage);
 }
 else
 {
 //Makes the command wait 5 seconds before sending the rest of the command data.
 await Task.Delay(TimeSpan.FromSeconds(5));
 
 
 var vnext = ctx.Client.GetVoiceNext();
 var vnc = vnext.GetConnection(ctx.Guild);
 
 //if null throws exception.
 if (vnc == null)
 throw new System.InvalidOperationException("Not connected in this guild.");
 
 
 //Gets the mp3 file to use.
 var ffmpeg = Process.Start(new ProcessStartInfo
 {
 FileName = "ffmpeg",
 Arguments = $@"-i ""{filepath}"" -ac 2 -f s16le -ar 48000 pipe:1",
 RedirectStandardOutput = true,
 UseShellExecute = false
 });
 Stream pcm = ffmpeg.StandardOutput.BaseStream;
 
 VoiceTransmitSink transmit = vnc.GetTransmitSink();
 await pcm.CopyToAsync(transmit);
 vnc.GetTransmitSink().VolumeModifier = 5;
 
 //Makes the command wait 10 seconds before sending the rest of the command data.
 await Task.Delay(TimeSpan.FromSeconds(10));
 
 //Disconnects the bot from the voice channel.
 vnc.Disconnect();
 }
 }
 }


//The command.
 [SlashCommand("join", "Joins a voice channel.")]
 public async Task JoinChannel(InteractionContext ctx, [Choice("MyVoiceChannel", "VoiceChannelName")]
 [Option("VoiceChannel", "Please choose a Voice Channel.")] DiscordChannel channel)
 {
 //Creates a slash command used response.
 //Also removes the error message.
 await ctx.CreateResponseAsync(InteractionResponseType.ChannelMessageWithSource, new DiscordInteractionResponseBuilder()
 .WithContent("Joining voice channel. Please wait just a moment!"));
 
 //Checks if the user is not a bot to send the message.
 if (ctx.Member.IsBot)
 {
 return;
 }
 else
 {
 if (channel.Name != "MyVoiceChannelName")
 {
 var embedmessage = new DiscordMessageBuilder()
 .AddEmbed(new DiscordEmbedBuilder()
 
 .WithAuthor("BotName", null, ctx.Client.CurrentApplication.Icon)
 .WithTitle("Please Create The Following Voice Channel:")
 .WithImageUrl(ctx.Client.CurrentApplication.Icon)
 .AddField("VoiceChannel:", "**BotName**" + Environment.NewLine + "Is Case Sensitive: **Yes**")
 .WithFooter("VoiceChannel Error.", "ImageURL.png")
 .WithTimestamp(DateTime.Now)
 .Build()
 
 );
 
 //Makes the command wait 5 seconds before sending the rest of the command data.
 await Task.Delay(TimeSpan.FromSeconds(5));
 
 //Sends the embed in a message.
 await ctx.Channel.SendMessageAsync(embedmessage);
 }
 else
 {
 //Makes the command wait 5 seconds before sending the rest of the command data.
 await Task.Delay(TimeSpan.FromSeconds(5));
 
 
 channel = ctx.Member.VoiceState?.Channel;
 await channel.ConnectAsync();
 
 }
 }
 }
 
 }
}


public sealed class Program
 {
 public static DiscordClient Client { get; private set; }
 public static InteractivityExtension Interactivity { get; private set; }
 public static CommandsNextExtension Commands { get; private set; }
 public static VoiceNextExtension VoiceNext { get; private set; }
 
 
 static async Task Main(string[] args)
 {
 
 //Main Window configs specifying the title name and color.
 Console.BackgroundColor = ConsoleColor.Black;
 Console.ForegroundColor = ConsoleColor.Magenta;
 Console.Title = "BotName";
 
 //1. Get the details of your config.json file by deserialising it
 var configJsonFile = new JSONReader();
 await configJsonFile.ReadJSON();
 
 //2. Setting up the Bot Configuration
 var discordConfig = new DiscordConfiguration()
 {
 Intents = DiscordIntents.All,
 Token = configJsonFile.token,
 TokenType = TokenType.Bot,
 AutoReconnect = true
 };
 
 //3. Apply this config to our DiscordClient
 Client = new DiscordClient(discordConfig);
 
 //4. Set the default timeout for Commands that use interactivity
 Client.UseInteractivity(new InteractivityConfiguration()
 {
 Timeout = TimeSpan.FromMinutes(2)
 });
 
 //5. Set up the Task Handler Ready event
 Client.Ready += OnClientReady;
 
 //6. Set up the Commands Configuration
 var commandsConfig = new CommandsNextConfiguration()
 {
 StringPrefixes = new string[] { configJsonFile.prefix },
 EnableMentionPrefix = true,
 EnableDms = true,
 EnableDefaultHelp = false,
 };
 
 Commands = Client.UseCommandsNext(commandsConfig);
 
 //7. Register your commands
 var slashCommandsConfig = Client.UseSlashCommands();
 slashCommandsConfig.RegisterCommands<mysoundscommand>(MyGuildID);
 
 //8. Allows usage of voice channels.
 var VoiceNext = Client.UseVoiceNext();
 
 //9. Connect to get the Bot online
 await Client.ConnectAsync();
 await Task.Delay(-1);
 }
 
 private static Task OnClientReady(DiscordClient sender, ReadyEventArgs e)
 {
 return Task.CompletedTask;
 }
 }
</mysoundscommand>

SourceCode Link :




playing the playsound slash command but wasn't expecting it to not play the mp3 file.


everything else worked fine except when it transmits the sound it doesn't play it.


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H264 Encoding - Could not play video using VLC Player
31 mars 2016, par bot1131357I am have trouble encoding an H264 video correctly using FFmpeg libav. I could not play the encoded video in VLC media player, and although I could play the video on MPC-HC the time shows
00:00/00:00. Clearly I’m missing something.The Media info from MPC-HC shows this :
General
Format : AVC
Format/Info : Advanced Video Codec
File size : 110 KiB
Duration : 2s 400ms
Overall bit rate : 375 Kbps
Writing library : x264 core 148 r2665 a01e339
Encoding settings : cabac=0 / ref=3 / deblock=1:0:0 / analyse=0x1:0x111 / me=hex / subme=7 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=0 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=7 / lookahead_threads=1 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=0 / weightp=0 / keyint=12 / keyint_min=1 / scenecut=40 / intra_refresh=0 / rc_lookahead=12 / rc=abr / mbtree=1 / bitrate=2000 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00Video
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Baseline@L2.1
Format settings, CABAC : No
Format settings, ReFrames : 3 frames
Format settings, GOP : M=1, N=12
Duration : 2s 400ms
Bit rate : 2 000 Kbps
Width : 320 pixels
Height : 240 pixels
Display aspect ratio : 4:3
Frame rate mode : Variable
Frame rate : 20.833 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 1.250
Stream size : 586 KiB
Writing library : x264 core 148 r2665 a01e339
Encoding settings : cabac=0 / ref=3 / deblock=1:0:0 / analyse=0x1:0x111 / me=hex / subme=7 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=0 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=7 / lookahead_threads=1 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=0 / weightp=0 / keyint=12 / keyint_min=1 / scenecut=40 / intra_refresh=0 / rc_lookahead=12 / rc=abr / mbtree=1 / bitrate=2000 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00I noticed something odd in the above info :
The frame rate is 20.833fps, instead of the specified 10 fps. Duration of 2s 400msdid not seem right either, since the video played for more than 4s.Also,
(AVFrame* picture)->pict_typeis always set toAV_PICTURE_TYPE_NONE. I don’t think this is normal.The library that I’m using is ffmpeg-20160219-git-98a0053-win32-dev. I would really really appreciate if you could help me out of this confusion.
/*
* Video encoding example
*/
char filename[] = "test.mp4";
int main(int argc, char** argv)
{
AVCodec *codec = NULL;
AVCodecContext *codecCtx= NULL;
AVFormatContext *pFormatCtx = NULL;
AVStream * pVideoStream = NULL;
AVFrame *picture = NULL;
int i, x, y, //
ret, // Return value
got_packet_ptr; // Data encoded into packet
printf("Video encoding\n");
// Register all formats and codecs
av_register_all();
// allocate context
pFormatCtx = avformat_alloc_context();
memcpy(pFormatCtx->filename,filename,
min(strlen(filename), sizeof(pFormatCtx->filename)));
// guess format
pFormatCtx->oformat = av_guess_format("h264", NULL, NULL);
if (NULL==pFormatCtx->oformat)
{
cerr << "Could not guess output format" << endl;
return -1;
}
// Find the codec.
codec = avcodec_find_encoder(pFormatCtx->oformat->video_codec);
if (codec == NULL) {
fprintf(stderr, "Codec not found\n");
return -1;
}
// Set context
int framerate = 10;
codecCtx = avcodec_alloc_context3(codec);
avcodec_get_context_defaults3(codecCtx, codec);
codecCtx->pix_fmt = AV_PIX_FMT_YUV420P;
codecCtx->profile = FF_PROFILE_H264_BASELINE;
// Resolution must be a multiple of two.
codecCtx->width = 320;
codecCtx->height = 240;
codecCtx->bit_rate = 2000000;
codecCtx->time_base.den = framerate;
codecCtx->time_base.num = 1;
codecCtx->gop_size = 12; // emit one intra frame every twelve frames at most
// Open the codec.
if (avcodec_open2(codecCtx, codec, NULL) < 0)
{
printf("Cannot open video codec\n");
return -1;
}
// Add stream to pFormatCtx
pVideoStream = avformat_new_stream(pFormatCtx, codec);
if (!pVideoStream)
{
printf("Cannot add new video stream\n");
return -1;
}
pVideoStream->codec = codecCtx;
pVideoStream->time_base.den = framerate;
pVideoStream->time_base.num = 1;
if (avio_open2(&pFormatCtx->pb, filename, AVIO_FLAG_WRITE, NULL, NULL) < 0)
{
printf("Cannot open file\n");
return -1;
}
// Write file header.
avformat_write_header(pFormatCtx, NULL);
// Create frame
picture= av_frame_alloc();
picture->format = codecCtx->pix_fmt;
picture->width = codecCtx->width;
picture->height = codecCtx->height;
int bufferImgSize = av_image_get_buffer_size(codecCtx->pix_fmt, codecCtx->width,
codecCtx->height,1);
av_image_alloc(picture->data, picture->linesize, codecCtx->width, codecCtx->height, codecCtx->pix_fmt, 32);
AVPacket avpkt;
/* encode 1 second of video */
for(i=0;i<50;i++)
{
/* prepare a dummy image */
/* Y */
for(y=0;yheight;y++)
{
for(x=0;xwidth;x++)
{
picture->data[0][y * picture->linesize[0] + x] = x + y + i * 3;
}
}
/* Cb and Cr */
for(y=0;yheight/2;y++)
{
for(x=0;xwidth/2;x++)
{
picture->data[1][y * picture->linesize[1] + x] = 128 + y + i * 2;
picture->data[2][y * picture->linesize[2] + x] = 64 + x + i * 5;
}
}
// Get timestamp
picture->pts = (float) i * (1000.0/(float)(codecCtx->time_base.den)) * 90;
// Encode frame to packet
av_init_packet(&avpkt);
got_packet_ptr = 0;
int error = avcodec_encode_video2(codecCtx, &avpkt, picture, &got_packet_ptr);
if (!error && got_packet_ptr > 0)
{
// Write packet with frame.
ret = (av_interleaved_write_frame(pFormatCtx, &avpkt) == 0);
}
av_packet_unref(&avpkt);
}
// Flush remaining encoded data
while(1)
{
av_init_packet(&avpkt);
got_packet_ptr = 0;
// Encode frame to packet.
int error = avcodec_encode_video2(codecCtx, &avpkt, NULL, &got_packet_ptr);
if (!error && got_packet_ptr > 0)
{
// Write packet with frame.
ret = (av_interleaved_write_frame(pFormatCtx, &avpkt) == 0);
}
else
{
break;
}
av_packet_unref(&avpkt);
}
av_write_trailer(pFormatCtx);
av_packet_unref(&avpkt);
av_frame_free(&picture);
avcodec_close(codecCtx);
av_free(codecCtx);
cin.get();
}
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