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Médias (3)
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MediaSPIP Simple : futur thème graphique par défaut ?
26 septembre 2013, par
Mis à jour : Octobre 2013
Langue : français
Type : Video
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GetID3 - Bloc informations de fichiers
9 avril 2013, par
Mis à jour : Mai 2013
Langue : français
Type : Image
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GetID3 - Boutons supplémentaires
9 avril 2013, par
Mis à jour : Avril 2013
Langue : français
Type : Image
Autres articles (72)
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Mise à jour de la version 0.1 vers 0.2
24 juin 2013, parExplications des différents changements notables lors du passage de la version 0.1 de MediaSPIP à la version 0.3. Quelles sont les nouveautés
Au niveau des dépendances logicielles Utilisation des dernières versions de FFMpeg (>= v1.2.1) ; Installation des dépendances pour Smush ; Installation de MediaInfo et FFprobe pour la récupération des métadonnées ; On n’utilise plus ffmpeg2theora ; On n’installe plus flvtool2 au profit de flvtool++ ; On n’installe plus ffmpeg-php qui n’est plus maintenu au (...) -
Personnaliser en ajoutant son logo, sa bannière ou son image de fond
5 septembre 2013, parCertains thèmes prennent en compte trois éléments de personnalisation : l’ajout d’un logo ; l’ajout d’une bannière l’ajout d’une image de fond ;
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Ecrire une actualité
21 juin 2013, parPrésentez les changements dans votre MédiaSPIP ou les actualités de vos projets sur votre MédiaSPIP grâce à la rubrique actualités.
Dans le thème par défaut spipeo de MédiaSPIP, les actualités sont affichées en bas de la page principale sous les éditoriaux.
Vous pouvez personnaliser le formulaire de création d’une actualité.
Formulaire de création d’une actualité Dans le cas d’un document de type actualité, les champs proposés par défaut sont : Date de publication ( personnaliser la date de publication ) (...)
Sur d’autres sites (12617)
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FFmpeg IF/ELSE statement
13 mai 2022, par HrvojeI am doing reencoding of lots of video files, and sometimes some of them have subtitles included, some dont. Is it possible to "ignore"

-vf "subtitles=%%f:force_style='MarginV=25,Fontsize=20'" -snstatement in FFmpeg command IF input file does not have subtitles included ?

My command is :


for %%f in (*.mkv) do ffmpeg -hwaccel nvdec -i "%%f" -strict -2 -max_muxing_queue_size 1024 -map_metadata -1 -map_chapters -1 -vf "subtitles=%%f:force_style='MarginV=25,Fontsize=20'" -sn -c:v hevc_nvenc -rc vbr -cq 24 -qmin 24 -qmax 24 -tier high -level 4 -preset medium -profile:v main10 -pix_fmt p010le -b:v 0K -ac 6 -ar 48000 -b:a:0 640k -c:a:0 ac3 -metadata:s:a:0 title="Dolby Digital" E:\Encoded\%%f


Note that there are more than 100 files in a batch and checking them by hand is time consuming.


Maybe right aproach is to first inspect file in a batch script and if that file has subtitles, then execute first command, if it does not have subtitles, execute second command. But, I dont know how to do a script like that.


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How to suppress `ffmpeg` output logging when using H.265 codec in quiet mode
5 avril 2022, par user223364When I run :-


ffmpeg -v quiet -i "${INPUT}" -c:v libx265 -crf 23 "${OUTPUT}"


I'm still getting output from the command even though the
loglevelis set tosilent(see the example of the output below)

x265 [info]: HEVC encoder version 3.5+20-17839cc0d
x265 [info]: build info [Mac OS X][clang 11.0.0][64 bit] 8bit+10bit+12bit
x265 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
x265 [info]: Main profile, Level-3 (Main tier)
x265 [info]: Thread pool created using 4 threads
x265 [info]: Slices : 1
x265 [info]: frame threads / pool features : 2 / wpp(9 rows)
x265 [warning]: Source height < 720p; disabling lookahead-slices
x265 [info]: Coding QT: max CU size, min CU size : 64 / 8
x265 [info]: Residual QT: max TU size, max depth : 32 / 1 inter / 1 intra
x265 [info]: ME / range / subpel / merge : hex / 57 / 2 / 3
x265 [info]: Keyframe min / max / scenecut / bias : 25 / 250 / 40 / 5.00
x265 [info]: Lookahead / bframes / badapt : 20 / 4 / 2
x265 [info]: b-pyramid / weightp / weightb : 1 / 1 / 0
x265 [info]: References / ref-limit cu / depth : 3 / off / on
x265 [info]: AQ: mode / str / qg-size / cu-tree : 2 / 1.0 / 32 / 1
x265 [info]: Rate Control / qCompress : CRF-23.0 / 0.60
x265 [info]: tools: rd=3 psy-rd=2.00 early-skip rskip mode=1 signhide tmvp
x265 [info]: tools: b-intra strong-intra-smoothing deblock sao


I'm using
v5offfmpeg

ffmpeg version 5.0-tessus https://evermeet.cx/ffmpeg/ Copyright (c) 2000-2022 the FFmpeg developers
 built with Apple clang version 11.0.0 (clang-1100.0.33.17)


How do I get
ffmpegto be really quiet ?

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offloading to ffmpeg via named pipes in c#/dotnet core
1er avril 2022, par bepI tried to break this down to the base elements so I hope this is clear. I want to take in a network stream, it may be a 1 way, it may be a protocol that requires 2 way communication, such as RTMP during handshake.


I want to pass that stream straight through to a spawned FFMPEG process. I then want to capture the output of FFMPEG, in this example I just want to pipe it out to a file. The file is not my end goal, but for simplicity if I can get that far I think I'll be ok.




I want the code to be as plain as possible and offload the core processing to FFMPEG. If I ask FFMPEG to output webrtc stream, a file, whatever, I just want to capture that. FFMPEG shouldn't be used directly, just indirectly via
IncomingConnectionHandler.

Only other component is OBS, which I am using to create the RTMP stream coming in.


As things stand now, running this results in the following error, which I'm a little unclear on. I don't feel like I'm causing concurrent reads at any point.


System.InvalidOperationException: Concurrent reads are not allowed
 at Medallion.Shell.Throw`1.If(Boolean condition, String message)
 at Medallion.Shell.Streams.Pipe.ReadAsync(Byte[] buffer, Int32 offset, Int32 count, TimeSpan timeout, CancellationToken cancellationToken)
 at Medallion.Shell.Streams.Pipe.PipeOutputStream.ReadAsync(Byte[] buffer, Int32 offset, Int32 count, CancellationToken cancellationToken)
 at System.IO.Stream.ReadAsync(Memory`1 buffer, CancellationToken cancellationToken)
 at System.IO.StreamReader.ReadBufferAsync(CancellationToken cancellationToken)
 at System.IO.StreamReader.ReadLineAsyncInternal()
 at Medallion.Shell.Streams.MergedLinesEnumerable.GetEnumeratorInternal()+MoveNext()
 at System.String.Join(String separator, IEnumerable`1 values)
 at VideoIngest.IncomingRtmpConnectionHandler.OnConnectedAsync(ConnectionContext connection) in Program.cs:line 55
 at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Infrastructure.KestrelConnection`1.ExecuteAsync()


Code :


namespace VideoIngest
{
 public class IncomingRtmpConnectionHandler : ConnectionHandler
 {
 private readonly ILogger<incomingrtmpconnectionhandler> logger;

 public IncomingRtmpConnectionHandler(ILogger<incomingrtmpconnectionhandler> logger)
 {
 this.logger = logger;
 }

 public override async Task OnConnectedAsync(ConnectionContext connection)
 {
 logger?.LogInformation("connection started");

 var outputFileName = @"C:\Temp\bunny.mp4";

 var rtmpPassthroughPipeName = Guid.NewGuid().ToString();
 var cmdPath = @"C:\Opt\ffmpeg\bin\ffmpeg.exe";
 var cmdArgs = $"-i pipe:{rtmpPassthroughPipeName} -preset slow -c copy -f mp4 -y pipe:1";

 var cancellationToken = connection.ConnectionClosed;
 var rtmpStream = connection.Transport;

 using (var outputStream = new FileStream(outputFileName, FileMode.Create))
 using (var cmd = Command.Run(cmdPath, options: o => { o.StartInfo(i => i.Arguments = cmdArgs); o.CancellationToken(cancellationToken); }))
 {
 // create a pipe to pass the RTMP data straight to FFMPEG. This code should be dumb to proto etc being used
 var ffmpegPassthroughStream = new NamedPipeServerStream(rtmpPassthroughPipeName, PipeDirection.InOut, 10, PipeTransmissionMode.Byte, System.IO.Pipes.PipeOptions.Asynchronous);

 // take the network stream and pass data to/from ffmpeg process
 var fromFfmpegTask = ffmpegPassthroughStream.CopyToAsync(rtmpStream.Output.AsStream(), cancellationToken);
 var toFfmpegTask = rtmpStream.Input.AsStream().CopyToAsync(ffmpegPassthroughStream, cancellationToken);

 // take the ffmpeg process output (not stdout) into target file
 var outputTask = cmd.StandardOutput.PipeToAsync(outputStream);

 while (!outputTask.IsCompleted && !outputTask.IsCanceled)
 {
 var errs = cmd.GetOutputAndErrorLines();
 logger.LogInformation(string.Join(Environment.NewLine, errs));

 await Task.Delay(1000);
 }

 CommandResult result = result = cmd.Result;

 if (result != null && result.Success)
 {
 logger.LogInformation("Created file");
 }
 else
 {
 logger.LogError(result.StandardError);
 }
 }

 logger?.LogInformation("connection closed");
 }
 }

 public class Startup
 {
 public void ConfigureServices(IServiceCollection services) { }

 public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
 {
 app.Run(async (context) =>
 {
 var log = context.RequestServices.GetRequiredService>();
 await context.Response.WriteAsync("Hello World!");
 });
 }
 }

 public class Program
 {
 public static void Main(string[] args)
 {
 CreateHostBuilder(args).Build().Run();
 }

 public static IWebHostBuilder CreateHostBuilder(string[] args) =>
 WebHost
 .CreateDefaultBuilder(args)
 .ConfigureServices(services =>
 {
 services.AddLogging(options =>
 {
 options.AddDebug().AddConsole().SetMinimumLevel(LogLevel.Information);
 });
 })
 .UseKestrel(options =>
 {
 options.ListenAnyIP(15666, builder =>
 {
 builder.UseConnectionHandler<incomingrtmpconnectionhandler>();
 });

 options.ListenLocalhost(5000);

 // HTTPS 5001
 options.ListenLocalhost(5001, builder =>
 {
 builder.UseHttps();
 });
 })
 .UseStartup<startup>();
 }
 

}
</startup></incomingrtmpconnectionhandler></incomingrtmpconnectionhandler></incomingrtmpconnectionhandler>

Questions :


- 

- Is this a valid approach, do you see any fundamental issues ?
- Is the pipe naming correct, is the convention just
pipe:someName? - Any ideas on what specifically may be causing the
Concurrent reads are not allowed? - If #3 is solved, does the rest of this seem valid ?










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