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Publier sur MédiaSpip
13 juin 2013Puis-je poster des contenus à partir d’une tablette Ipad ?
Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir -
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 (...) -
Emballe médias : à quoi cela sert ?
4 février 2011, parCe plugin vise à gérer des sites de mise en ligne de documents de tous types.
Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ;
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Cortex-A7 instruction cycle timings
15 mai 2014, par Mans — ARMThe Cortex-A7 ARM core is a popular choice in low-power and low-cost designs. Unfortunately, the public TRM does not include instruction timing information. It does reveal that execution is in-order which makes measuring the throughput and latency for individual instructions relatively straight-forward.
The table below lists the measured issue cycles (inverse throughput) and result latency of some commonly used instructions.
It should be noted that in some cases, the perceived latency depends on the instruction consuming the result. Most of the values were measured with the result used as input to the same instruction. For instructions with multiple outputs, the latencies of the result registers may also differ.
Finally, although instruction issue is in-order, completion is out of order, allowing independent instructions to issue and complete unimpeded while a multi-cycle instruction is executing in another unit. For example, a 3-cycle MUL instruction does not block ADD instructions following it in program order.
ALU instructions Issue cycles Result latency MOV Rd, Rm 1/2 1 ADD Rd, Rn, #imm 1/2 1 ADD Rd, Rn, Rm 1 1 ADD Rd, Rn, Rm, LSL #imm 1 1 ADD Rd, Rn, Rm, LSL Rs 1 1 LSL Rd, Rn, #imm 1 2 LSL Rd, Rn, Rs 1 2 QADD Rd, Rn, Rm 1 2 QADD8 Rd, Rn, Rm 1 2 QADD16 Rd, Rn, Rm 1 2 CLZ Rd, Rm 1 1 RBIT Rd, Rm 1 2 REV Rd, Rm 1 2 SBFX Rd, Rn 1 2 BFC Rd, #lsb, #width 1 2 BFI Rd, Rn, #lsb, #width 1 2 NOTE : Shifted operands and shift amounts needed one cycle early. Multiply instructions Issue cycles Result latency MUL Rd, Rn, Rm 1 3 MLA Rd, Rn, Rm, Ra 1 31 SMULL Rd, RdHi, Rn, Rm 1 3 SMLAL Rd, RdHi, Rn, Rm 1 31 SMMUL Rd, Rn, Rm 1 3 SMMLA Rd, Rn, Rm, Ra 1 31 SMULBB Rd, Rn, Rm 1 3 SMLABB Rd, Rn, Rm, Ra 1 31 SMULWB Rd, Rn, Rm 1 3 SMLAWB Rd, Rn, Rm, Ra 1 31 SMUAD Rd, Rn, Rm 1 3 1 Accumulator forwarding allows back to back MLA instructions without delay. Divide instructions Issue cycles Result latency SDIV Rd, Rn, Rm 4-20 6-22 UDIV Rd, Rn, Rm 3-19 5-21 Load/store instructions Issue cycles Result latency LDR Rt, [Rn] 1 3 LDR Rt, [Rn, #imm] 1 3 LDR Rt, [Rn, Rm] 1 3 LDR Rt, [Rn, Rm, lsl #imm] 1 3 LDRD Rt, Rt2, [Rn] 1 3-4 LDM Rn, regs 1-8 3-10 STR Rt, [Rn] 1 2 STRD Rt, Rt2, [Rn] 1 2 STM Rn, regs 1-10 2-12 NOTE : Load results are forwarded to dependent stores without delay. VFP instructions Issue cycles Result latency VMOV.F32 Sd, Sm 1 4 VMOV.F64 Dd, Dm 1 4 VNEG.F32 Sd, Sm 1 4 VNEG.F64 Dd, Dm 1 4 VABS.F32 Sd, Sm 1 4 VABS.F64 Dd, Dm 1 4 VADD.F32 Sd, Sn, Sm 1 4 VADD.F64 Dd, Dn, Dm 1 4 VMUL.F32 Sd, Sn, Sm 1 4 VMUL.F64 Dd, Dn, Dm 4 7 VMLA.F32 Sd, Sn, Sm 1 81 VMLA.F64 Dd, Dn, Dm 4 112 VFMA.F32 Sd, Sn, Sm 1 81 VFMA.F64 Dd, Dn, Dm 5 82 VDIV.F32 Sd, Sn, Sm 15 18 VDIV.F64 Dd, Dn, Dm 29 32 VSQRT.F32 Sd, Sm 14 17 VSQRT.F64 Dd, Dm 28 31 VCVT.F32.F64 Sd, Dm 1 4 VCVT.F64.F32 Dd, Sm 1 4 VCVT.F32.S32 Sd, Sm 1 4 VCVT.F64.S32 Dd, Sm 1 4 VCVT.S32.F32 Sd, Sm 1 4 VCVT.S32.F64 Sd, Dm 1 4 VCVT.F32.S32 Sd, Sd, #fbits 1 4 VCVT.F64.S32 Dd, Dd, #fbits 1 4 VCVT.S32.F32 Sd, Sd, #fbits 1 4 VCVT.S32.F64 Dd, Dd, #fbits 1 4 1 5 cycles with dependency only on accumulator.
2 8 cycles with dependency only on accumulator.NEON integer instructions Issue cycles Result latency VADD.I8 Dd, Dn, Dm 1 4 VADDL.S8 Qd, Dn, Dm 2 4 VADD.I8 Qd, Qn, Qm 2 4 VMUL.I8 Dd, Dn, Dm 2 4 VMULL.S8 Qd, Dn, Dm 2 4 VMUL.I8 Qd, Qn, Qm 4 4 VMLA.I8 Dd, Dn, Dm 2 4 VMLAL.S8 Qd, Dn, Dm 2 4 VMLA.I8 Qd, Qn, Qm 4 4 VADD.I16 Dd, Dn, Dm 1 4 VADDL.S16 Qd, Dn, Dm 2 4 VADD.I16 Qd, Qn, Qm 2 4 VMUL.I16 Dd, Dn, Dm 1 4 VMULL.S16 Qd, Dn, Dm 2 4 VMUL.I16 Qd, Qn, Qm 2 4 VMLA.I16 Dd, Dn, Dm 1 4 VMLAL.S16 Qd, Dn, Dm 2 4 VMLA.I16 Qd, Qn, Qm 2 4 VADD.I32 Dd, Dn, Dm 1 4 VADDL.S32 Qd, Dn, Dm 2 4 VADD.I32 Qd, Qn, Qm 2 4 VMUL.I32 Dd, Dn, Dm 2 4 VMULL.S32 Qd, Dn, Dm 2 4 VMUL.I32 Qd, Qn, Qm 4 4 VMLA.I32 Dd, Dn, Dm 2 4 VMLAL.S32 Qd, Dn, Dm 2 4 VMLA.I32 Qd, Qn, Qm 4 4 NEON floating-point instructions Issue cycles Result latency VADD.F32 Dd, Dn, Dm 2 4 VADD.F32 Qd, Qn, Qm 4 4 VMUL.F32 Dd, Dn, Dm 2 4 VMUL.F32 Qd, Qn, Qm 4 4 VMLA.F32 Dd, Dn, Dm 2 81 VMLA.F32 Qd, Qn, Qm 4 81 1 5 cycles with dependency only on accumulator. NEON permute instructions Issue cycles Result latency VEXT.n Dd, Dn, Dm, #imm 1 4 VEXT.n Qd, Qn, Qm, #imm 2 5 VTRN.n Dd, Dn, Dm 2 5 VTRN.n Qd, Qn, Qm 4 5 VUZP.n Dd, Dn, Dm 2 5 VUZP.n Qd, Qn, Qm 4 6 VZIP.n Dd, Dn, Dm 2 5 VZIP.n Qd, Qn, Qm 4 6 VTBL.8 Dd, Dn, Dm 1 4 VTBL.8 Dd, Dn-Dn+1, Dm 1 4 VTBL.8 Dd, Dn-Dn+2, Dm 2 5 VTBL.8 Dd, Dn-Dn+3, Dm 2 5 -
Could not load file or assembly 'Accord.Video.FFMPEG.x64.DLL' or one of its dependencies. The specified module could not be found
24 septembre 2020, par Sandeep KumarTrying to merge image and audio file to create a video file.


I have tried


- 

- changing the arch (x86 and x64).
- Manually moved all the dependent .dlls for "Accord.Video.FFMPEG.x64.DLL" to the the bin.
- used both Accord and Aforge, both of them have the same issue.
- installed VC++ redistribuable 2013 and 2015-19










Following is the base code :


private const string _basePath = @"D:\R&D Projects\AudioVideoConvertor\VideoAudioMerger\VideoAudioMerger\Images\";

 protected void Page_Load(object sender, EventArgs e)
 {
 int width = 2500;
 int height = 2100;
 int frameRate = 10;// Shuld be fix
 using (var videoWriter = new VideoFileWriter())
 {
 // default frame size 340, 220
 videoWriter.Open(_basePath + "test.avi", width, height, frameRate, VideoCodec.WMV1);
 ResizeNearestNeighbor filter = new ResizeNearestNeighbor(width, height);
 var images = Directory.GetFiles(_basePath, "*.jpg");
 var tfile = TagLib.File.Create(_basePath + "audio.mp3");
 //string title = tfile.Tag.Title;
 TimeSpan duration = tfile.Properties.Duration;
 decimal timeinSecond = Math.Round((Convert.ToDecimal(duration.TotalSeconds) * frameRate) / images.Length);
 foreach (string img in images)
 {

 using (Bitmap image = Bitmap.FromFile(img) as Bitmap)
 {
 //As per audio length rotate image in video frame.
 for (int i = 0; i < timeinSecond; i++)
 {
 videoWriter.WriteVideoFrame(filter.Apply(image));
 }
 }
 }
 videoWriter.Close();
 MergeAudioAndVideo();
 }
 }

 private static void MergeAudioAndVideo()
 {

 File.Delete(_basePath + "mergedvideo.avi");
 Process pss = new Process();
 ProcessStartInfo si = new ProcessStartInfo();
 si.FileName = @"D:\R&D Projects\AudioVideoConvertor\VideoAudioMerger\VideoAudioMerger\ffmpeg-win64-static\bin\ffmpeg.exe";
 si.UseShellExecute = false;
 si.CreateNoWindow = true;
 si.Arguments = "-i \"" + _basePath + "test.avi\" -i \"" + _basePath + "audio.mp3\" -c:v copy -c:a copy -map 0:v:0 -map 1:a:0 \"" + _basePath + "mergevideo1" + ".avi\"";
 pss.StartInfo = si;
 pss.Start();
 pss.WaitForExit();
 File.Delete(_basePath + "test.avi");
 }


Also, putting in the link to this sample project, https://drive.google.com/file/d/1JAt8ZUCCsIwez0fkdvq_2FGeGXif5rwu/view?usp=sharing.


Please help out in finding why this issue is coming ?


Issue :


Could not load file or assembly 'Accord.Video.FFMPEG.x64.DLL' or one of its dependencies. The specified module could not be found.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.IO.FileNotFoundException: Could not load file or assembly 'Accord.Video.FFMPEG.x64.DLL' or one of its dependencies. The specified module could not be found.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[FileNotFoundException: Could not load file or assembly 'Accord.Video.FFMPEG.x64.DLL' or one of its dependencies. The specified module could not be found.]
 System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) +0
 System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, RuntimeAssembly reqAssembly, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) +232
 System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean forIntrospection) +113
 System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) +23
 System.Reflection.Assembly.Load(String assemblyString) +35
 System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +49

[ConfigurationErrorsException: Could not load file or assembly 'Accord.Video.FFMPEG.x64.DLL' or one of its dependencies. The specified module could not be found.]
 System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +762
 System.Web.Configuration.CompilationSection.LoadAllAssembliesFromAppDomainBinDirectory() +259
 System.Web.Configuration.CompilationSection.LoadAssembly(AssemblyInfo ai) +167
 System.Web.Compilation.BuildManager.GetReferencedAssemblies(CompilationSection compConfig) +238
 System.Web.Compilation.BuildManager.GetPreStartInitMethodsFromReferencedAssemblies() +78
 System.Web.Compilation.BuildManager.CallPreStartInitMethods(String preStartInitListPath, Boolean& isRefAssemblyLoaded) +334
 System.Web.Compilation.BuildManager.ExecutePreAppStart() +178
 System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters, PolicyLevel policyLevel, Exception appDomainCreationException) +746

[HttpException (0x80004005): Could not load file or assembly 'Accord.Video.FFMPEG.x64.DLL' or one of its dependencies. The specified module could not be found.]
 System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +552
 System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +122
 System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +737


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Continuous remultiplexing of two MPEG-TS multicasts into a single MPEG-TS multicast in the face of upstream errors
29 mars 2021, par Anonymous CowardI remultiplex PIDs from two incoming multicasts into a single TS using something like below :


ffmpeg -i udp://239.1.1.1:5000 -i udp://239.1.1.2:5000 -map 0:v -map 0:a -map 1:a -codec copy -f mpegts udp://239.1.1.3:5000


This works well when the multicasts are stable, but occasionally one of the multicasts will disappear for a short period of time. In this case, the output stops and the remaining input buffer start to fill as it is not being drained, sometimes overrunning the circular buffer. When the failed input returns, the backed-up buffer is not drained, so there is an ongoing offset between the inputs.


Is it possible to configure ffmpeg in such a way that the output continues, just without the missing PID ? eg so the video and first audio continue, but the second audio is not present for the period that input is missing.


Thanks in advance !


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