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The Great Big Beautiful Tomorrow
28 octobre 2011, par
Mis à jour : Octobre 2011
Langue : English
Type : Texte
Autres articles (102)
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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 -
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 -
Soumettre bugs et patchs
10 avril 2011Un logiciel n’est malheureusement jamais parfait...
Si vous pensez avoir mis la main sur un bug, reportez le dans notre système de tickets en prenant bien soin de nous remonter certaines informations pertinentes : le type de navigateur et sa version exacte avec lequel vous avez l’anomalie ; une explication la plus précise possible du problème rencontré ; si possibles les étapes pour reproduire le problème ; un lien vers le site / la page en question ;
Si vous pensez avoir résolu vous même le bug (...)
Sur d’autres sites (7922)
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libavformat : add RCWT closed caption muxex
14 janvier 2024, par Marth64libavformat : add RCWT closed caption muxex
Signed-off-by : Marth64 <marth64@proxyid.net>
Raw Captions With Time (RCWT) is a format native to ccextractor, a commonly
used open source tool for processing 608/708 closed caption (CC) sources.
It can be used to archive the original, raw CC bitstream and to produce
a source file file for later CC processing or conversion. As a result,
it also allows for interopability with ccextractor for processing CC data
extracted via ffmpeg. The format is simple to parse and can be used
to retain all lines and variants of CC.A free specification of RCWT can be found here :
https://github.com/CCExtractor/ccextractor/blob/master/docs/BINARY_FILE_FORMAT.TXT
This muxer implements the specification as of 01/05/2024, which has
been stable and unchanged for 10 years as of this writing.This muxer will have some nuances from the way that ccextractor muxes RCWT.
No compatibility issues when processing the output with ccextractor
have been observed as a result of this so far, but mileage may vary
and outputs will not be a bit-exact match.Specifically, the differences are :
(1) This muxer will identify as "FF" as the writing program identifier, so
as to be honest about the output's origin.(2) ffmpeg's MPEG-1/2, H264, HEVC, etc. decoders extract closed captioning
data differently than ccextractor from embedded SEI/user data.
For example, DVD captioning bytes will be translated to ATSC A53 format.
This allows ffmpeg to handle 608/708 in a consistant way downstream.
This is a lossless conversion and the meaningful data is retained.(3) This muxer will not alter the extracted data except to remove invalid
packets in between valid CC blocks. On the other hand, ccextractor
will by default remove mid-stream padding, and add padding at the end
of the stream (in order to convey the end time of the source video). -
ffmpeg not available on Oracle Linux 9 update 3 [closed]
19 janvier 2024, par Red CricketI cannot figure out how to install
ffmpegon a Oracle Linux 9 update 3 (RHCK).

[root@snc-ol93-rhck ~]# dnf install ffmpeg-free
Last metadata expiration check: 0:14:16 ago on Wed 17 Jan 2024 04:48:34 PM UTC.
Error:
 Problem: package ffmpeg-free-5.1.4-2.el9.x86_64 from ol9_developer_EPEL requires libavfilter.so.8()(64bit), but none of the providers can be installed
 - package ffmpeg-free-5.1.4-2.el9.x86_64 from ol9_developer_EPEL requires libavfilter.so.8(LIBAVFILTER_8)(64bit), but none of the providers can be installed
 - package libavfilter-free-5.1.3-1.el9.x86_64 from ol9_developer_EPEL requires librubberband.so.2()(64bit), but none of the providers can be installed
 - package libavfilter-free-5.1.4-1.el9.x86_64 from ol9_developer_EPEL requires librubberband.so.2()(64bit), but none of the providers can be installed
 - package libavfilter-free-5.1.4-2.el9.x86_64 from ol9_developer_EPEL requires librubberband.so.2()(64bit), but none of the providers can be installed
 - cannot install the best candidate for the job
 - nothing provides ladspa needed by rubberband-2.0.1-1.el9.x86_64 from ol9_developer_EPEL
 - nothing provides ladspa needed by rubberband-3.1.0-2.el9.x86_64 from ol9_developer_EPEL
 - nothing provides ladspa needed by rubberband-3.1.3-1.el9.x86_64 from ol9_developer_EPEL
(try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)


Turns out I needed to install the repo like so in my ansible playbook


dnf install https://mirrors.rpmfusion.org/free/el/rpmfusion-free-release-9.noarch.rpm


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I am converting images to video using ffmpeg in koltin but i am getting error
28 mars 2024, par Mohith_karthikeyai implement ffmpeg by using this gitbub by this reference :5

https://github.com/tanersener/mobile-ffmpegin koltin
my code is :

class BurstModeToVideo(
 private val context: Context,
 private val onVideoConverted: (File) -> Unit
) {

 private val vibeDirectory = File(context.getExternalFilesDir(Environment.DIRECTORY_PICTURES), "vibes")
 private val outputDirectory = context.getExternalFilesDir(Environment.DIRECTORY_MOVIES)

 fun convertBitmapToJpeg(vibes: List<bitmap>) {
 if (!vibeDirectory.exists()) {
 vibeDirectory.mkdirs()
 }

 vibes.forEachIndexed { index, vibe ->
 val fileName = "$index.jpg"
 val file = File(vibeDirectory, fileName)
 FileOutputStream(file).use { fos ->
 vibe.compress(Bitmap.CompressFormat.JPEG, 100, fos)
 }
 }
 }

 private val callback = ExecuteCallback { _, returnCode ->
 if (returnCode == Config.RETURN_CODE_SUCCESS) {
 try {
 val tempFile = File("${outputDirectory?.absolutePath}/vibe.mp4")
 onVideoConverted(tempFile)
 Log.e(TAG, "FFmpeg output found $tempFile")
 Toast.makeText(context,"$tempFile",Toast.LENGTH_LONG).show()
 Log.e(TAG, "FFmpeg output found $")
 } catch (e: IOException) {
 Log.e(TAG, "Error handling FFmpeg output", e)
 }
 } else {
 Log.i(TAG, "Async command execution failed with returnCode=$returnCode.")
 }
 }

 fun convertShotsToVideo() {
 if (!vibeDirectory.exists() || vibeDirectory.listFiles()?.isEmpty() == true) {
 Log.e(TAG, "No images to convert")
 return
 }

 Log.d(TAG, "Images are stored in: ${vibeDirectory.absolutePath}")

 val imageFiles = vibeDirectory.listFiles { file -> file.isFile && file.extension.equals("jpg", ignoreCase = true) }
 if (imageFiles.isNullOrEmpty()) {
 Log.e(TAG, "No image files found in directory")
 return
 }

 Log.d(TAG, "List of image files:")
 imageFiles.forEach { file ->
 Log.d(TAG, file.name)
 }

 val cmd = "-i ${vibeDirectory.absolutePath}/%d.jpg -c:v mpeg4 -y ${outputDirectory?.absolutePath}/vibe.mp4"

 FFmpevubeg.executeAsync(cmd, callback)
 }

 companion object {
 private const val TAG = "BurstModeToVideo"
 }
}
</bitmap>

above function convert images from bimtap to jpeg files and then it converts to video by using ffmpeg. And i initialize this fun in mainactivity.kt and it goes here :


var vibe by remember {
 mutableStateOf(null)
 }

 val burstModeToVideo = BurstModeToVideo(
 context,
 onVideoConverted = {
 vibe = it
 }
 )
coroutineScope.launch {
 withContext(Dispatchers.IO) {
 burstModeToVideo.convertBitmapToJpeg(vibesList)
 burstModeToVideo.convertShotsToVideo()
 }
 }

VideoPlayer(vibe)


now this vibe variable is used in videoPlayer function and it goes here :


@OptIn(UnstableApi::class)
@Composable
fun VideoPlayer(file: File) {
 val context = LocalContext.current

 val exoPlayer = remember {
 ExoPlayer.Builder(context)
 .build()
 .apply {
 val defaultDataSourceFactory = DefaultDataSource.Factory(context)
 val dataSourceFactory: DataSource.Factory = DefaultDataSource.Factory(
 context,
 defaultDataSourceFactory
 )
 this.repeatMode = ExoPlayer.REPEAT_MODE_ALL
 this.playWhenReady = true
 val source = file.let {
 ProgressiveMediaSource.Factory(dataSourceFactory)
 .createMediaSource(MediaItem.fromUri(Uri.fromFile(file)))
 }
 this.setMediaSource(source)
 this.prepare()
 this.play()
 this.volume = 0f
 }
 }

 DisposableEffect(Unit) {
 onDispose {
 exoPlayer.release()
 }
 }

 AndroidView(
 factory = { ctx ->
 PlayerView(ctx).apply {
 useController = false
 resizeMode = AspectRatioFrameLayout.RESIZE_MODE_ZOOM
 player = exoPlayer
 }
 },
 modifier = Modifier.fillMaxSize()
 )
}


the error is :


MediaCodec will operate in async mode
2024-03-28 20:08:53.065 18946-27920 OplusCCodec com.example.flenzey D initiateShutdown [475]: (0xb400007656569fc0) keepComponentAllocated=0
2024-03-28 20:08:53.067 18946-27920 BpBinder com.example.flenzey I onLastStrongRef automatically unlinking death recipients: android.media.IResourceManagerService
2024-03-28 20:08:53.069 18946-27926 hw-BpHwBinder com.example.flenzey I onLastStrongRef automatically unlinking death recipients
2024-03-28 20:08:53.071 18946-27926 OplusCCodec com.example.flenzey D ~OplusCCodec [144]: (0xb400007656569fc0)
2024-03-28 20:08:53.077 18946-27889 MediaCodecRenderer com.example.flenzey W Failed to initialize decoder: c2.android.mpeg4.decoder
 java.lang.IllegalArgumentException
 at android.media.MediaCodec.native_configure(Native Method)
 at android.media.MediaCodec.configure(MediaCodec.java:2176)
 at android.media.MediaCodec.configure(MediaCodec.java:2092)
 at androidx.media3.exoplayer.mediacodec.AsynchronousMediaCodecAdapter.initialize(AsynchronousMediaCodecAdapter.java:174)
 at androidx.media3.exoplayer.mediacodec.AsynchronousMediaCodecAdapter.access$100(AsynchronousMediaCodecAdapter.java:54)
 at androidx.media3.exoplayer.mediacodec.AsynchronousMediaCodecAdapter$Factory.createAdapter(AsynchronousMediaCodecAdapter.java:119)
 at androidx.media3.exoplayer.mediacodec.DefaultMediaCodecAdapterFactory.createAdapter(DefaultMediaCodecAdapterFactory.java:117)
 at androidx.media3.exoplayer.mediacodec.MediaCodecRenderer.initCodec(MediaCodecRenderer.java:1195)
 at androidx.media3.exoplayer.mediacodec.MediaCodecRenderer.maybeInitCodecWithFallback(MediaCodecRenderer.java:1103)
 at androidx.media3.exoplayer.mediacodec.MediaCodecRenderer.maybeInitCodecOrBypass(MediaCodecRenderer.java:551)
 at androidx.media3.exoplayer.mediacodec.MediaCodecRenderer.onInputFormatChanged(MediaCodecRenderer.java:1560)
 at androidx.media3.exoplayer.video.MediaCodecVideoRenderer.onInputFormatChanged(MediaCodecVideoRenderer.java:1152)
 at androidx.media3.exoplayer.mediacodec.MediaCodecRenderer.readSourceOmittingSampleData(MediaCodecRenderer.java:994)
 at androidx.media3.exoplayer.mediacodec.MediaCodecRenderer.render(MediaCodecRenderer.java:814)
 at androidx.media3.exoplayer.video.MediaCodecVideoRenderer.render(MediaCodecVideoRenderer.java:940)
 at androidx.media3.exoplayer.ExoPlayerImplInternal.doSomeWork(ExoPlayerImplInternal.java:1102)
 at androidx.media3.exoplayer.ExoPlayerImplInternal.handleMessage(ExoPlayerImplInternal.java:541)
 at android.os.Handler.dispatchMessage(Handler.java:102)
 at android.os.Looper.loopOnce(Looper.java:238)
 at android.os.Looper.loop(Looper.java:349)
 at android.os.HandlerThread.run(HandlerThread.java:67)
2024-03-28 20:08:53.091 18946-27889 MediaCodecVideoRenderer com.example.flenzey E Video codec error
 androidx.media3.exoplayer.mediacodec.MediaCodecRenderer$DecoderInitializationException: Decoder init failed: c2.android.mpeg4.decoder, Format(1, null, null, video/mp4v-es, null, 22800180, null, [2448, 3264, 24.999998, ColorInfo(Unset color space, Unset color range, Unset color transfer, false, 8bit Luma, 8bit Chroma)], [-1, -1])
 at androidx.media3.exoplayer.mediacodec.MediaCodecRenderer.maybeInitCodecWithFallback(MediaCodecRenderer.java:1114)
 at androidx.media3.exoplayer.mediacodec.MediaCodecRenderer.maybeInitCodecOrBypass(MediaCodecRenderer.java:551)
 at androidx.media3.exoplayer.mediacodec.MediaCodecRenderer.onInputFormatChanged(MediaCodecRenderer.java:1560)
 at androidx.media3.exoplayer.video.MediaCodecVideoRenderer.onInputFormatChanged(MediaCodecVideoRenderer.java:1152)
 at androidx.media3.exoplayer.mediacodec.MediaCodecRenderer.readSourceOmittingSampleData(MediaCodecRenderer.java:994)
 at androidx.media3.exoplayer.mediacodec.MediaCodecRenderer.render(MediaCodecRenderer.java:814)
 at androidx.media3.exoplayer.video.MediaCodecVideoRenderer.render(MediaCodecVideoRenderer.java:940)
 at androidx.media3.exoplayer.ExoPlayerImplInternal.doSomeWork(ExoPlayerImplInternal.java:1102)
 at androidx.media3.exoplayer.ExoPlayerImplInternal.handleMessage(ExoPlayerImplInternal.java:541)
 at android.os.Handler.dispatchMessage(Handler.java:102)
 at android.os.Looper.loopOnce(Looper.java:238)
 at android.os.Looper.loop(Looper.java:349)
 at android.os.HandlerThread.run(HandlerThread.java:67)
 Caused by: java.lang.IllegalArgumentException
 at android.media.MediaCodec.native_configure(Native Method)
 at android.media.MediaCodec.configure(MediaCodec.java:2176)
 at android.media.MediaCodec.configure(MediaCodec.java:2092)
 at androidx.media3.exoplayer.mediacodec.AsynchronousMediaCodecAdapter.initialize(AsynchronousMediaCodecAdapter.java:174)
 at androidx.media3.exoplayer.mediacodec.AsynchronousMediaCodecAdapter.access$100(AsynchronousMediaCodecAdapter.java:54)
 at androidx.media3.exoplayer.mediacodec.AsynchronousMediaCodecAdapter$Factory.createAdapter(AsynchronousMediaCodecAdapter.java:119)
 at androidx.media3.exoplayer.mediacodec.DefaultMediaCodecAdapterFactory.createAdapter(DefaultMediaCodecAdapterFactory.java:117)
 at androidx.media3.exoplayer.mediacodec.MediaCodecRenderer.initCodec(MediaCodecRenderer.java:1195)
 at androidx.media3.exoplayer.mediacodec.MediaCodecRenderer.maybeInitCodecWithFallback(MediaCodecRenderer.java:1103)
 at androidx.media3.exoplayer.mediacodec.MediaCodecRenderer.maybeInitCodecOrBypass(MediaCodecRenderer.java:551) 
 at androidx.media3.exoplayer.mediacodec.MediaCodecRenderer.onInputFormatChanged(MediaCodecRenderer.java:1560) 
 at androidx.media3.exoplayer.video.MediaCodecVideoRenderer.onInputFormatChanged(MediaCodecVideoRenderer.java:1152) 
 at androidx.media3.exoplayer.mediacodec.MediaCodecRenderer.readSourceOmittingSampleData(MediaCodecRenderer.java:994) 
 at androidx.media3.exoplayer.mediacodec.MediaCodecRenderer.render(MediaCodecRenderer.java:814) 
 at androidx.media3.exoplayer.video.MediaCodecVideoRenderer.render(MediaCodecVideoRenderer.java:940) 
 at androidx.media3.exoplayer.ExoPlayerImplInternal.doSomeWork(ExoPlayerImplInternal.java:1102) 
 at androidx.media3.exoplayer.ExoPlayerImplInternal.handleMessage(ExoPlayerImplInternal.java:541) 
 at android.os.Handler.dispatchMessage(Handler.java:102) 
 at android.os.Looper.loopOnce(Looper.java:238) 
 at android.os.Looper.loop(Looper.java:349) 
 at android.os.HandlerThread.run(HandlerThread.java:67) 
2024-03-28 20:08:53.092 18946-27889 MediaCodecInfo com.example.flenzey D NoSupport [sizeAndRate.support, 2448x3264@24.999998092651367] [c2.android.mpeg4.decoder, video/mp4v-es] [OP535DL1, CPH2381, OnePlus, 31]
2024-03-28 20:08:53.108 18946-27889 ExoPlayerImplInternal com.example.flenzey E Playback error
 androidx.media3.exoplayer.ExoPlaybackException: MediaCodecVideoRenderer error, index=0, format=Format(1, null, null, video/mp4v-es, null, 22800180, null, [2448, 3264, 24.999998, ColorInfo(Unset color space, Unset color range, Unset color transfer, false, 8bit Luma, 8bit Chroma)], [-1, -1]), format_supported=NO_EXCEEDS_CAPABILITIES
 at androidx.media3.exoplayer.ExoPlayerImplInternal.handleMessage(ExoPlayerImplInternal.java:620)
 at android.os.Handler.dispatchMessage(Handler.java:102)
 at android.os.Looper.loopOnce(Looper.java:238)
 at android.os.Looper.loop(Looper.java:349)
 at android.os.HandlerThread.run(HandlerThread.java:67)
 Caused by: androidx.media3.exoplayer.mediacodec.MediaCodecRenderer$DecoderInitializationException: Decoder init failed: c2.android.mpeg4.decoder, Format(1, null, null, video/mp4v-es, null, 22800180, null, [2448, 3264, 24.999998, ColorInfo(Unset color space, Unset color range, Unset color transfer, false, 8bit Luma, 8bit Chroma)], [-1, -1])
 at androidx.media3.exoplayer.mediacodec.MediaCodecRenderer.maybeInitCodecWithFallback(MediaCodecRenderer.java:1114)
 at androidx.media3.exoplayer.mediacodec.MediaCodecRenderer.maybeInitCodecOrBypass(MediaCodecRenderer.java:551)
 at androidx.media3.exoplayer.mediacodec.MediaCodecRenderer.onInputFormatChanged(MediaCodecRenderer.java:1560)
 at androidx.media3.exoplayer.video.MediaCodecVideoRenderer.onInputFormatChanged(MediaCodecVideoRenderer.java:1152)
 at androidx.media3.exoplayer.mediacodec.MediaCodecRenderer.readSourceOmittingSampleData(MediaCodecRenderer.java:994)
 at androidx.media3.exoplayer.mediacodec.MediaCodecRenderer.render(MediaCodecRenderer.java:814)
 at androidx.media3.exoplayer.video.MediaCodecVideoRenderer.render(MediaCodecVideoRenderer.java:940)
 at androidx.media3.exoplayer.ExoPlayerImplInternal.doSomeWork(ExoPlayerImplInternal.java:1102)
 at androidx.media3.exoplayer.ExoPlayerImplInternal.handleMessage(ExoPlayerImplInternal.java:541)
 at android.os.Handler.dispatchMessage(Handler.java:102) 
 at android.os.Looper.loopOnce(Looper.java:238) 
 at android.os.Looper.loop(Looper.java:349) 
 at android.os.HandlerThread.run(HandlerThread.java:67) 
 Caused by: java.lang.IllegalArgumentException
 at android.media.MediaCodec.native_configure(Native Method)
 at android.media.MediaCodec.configure(MediaCodec.java:2176)
 at android.media.MediaCodec.configure(MediaCodec.java:2092)
 at androidx.media3.exoplayer.mediacodec.AsynchronousMediaCodecAdapter.initialize(AsynchronousMediaCodecAdapter.java:174)
 at androidx.media3.exoplayer.mediacodec.AsynchronousMediaCodecAdapter.access$100(AsynchronousMediaCodecAdapter.java:54)
 at androidx.media3.exoplayer.mediacodec.AsynchronousMediaCodecAdapter$Factory.createAdapter(AsynchronousMediaCodecAdapter.java:119)
 at androidx.media3.exoplayer.mediacodec.DefaultMediaCodecAdapterFactory.createAdapter(DefaultMediaCodecAdapterFactory.java:117)
 at androidx.media3.exoplayer.mediacodec.MediaCodecRenderer.initCodec(MediaCodecRenderer.java:1195)
 at androidx.media3.exoplayer.mediacodec.MediaCodecRenderer.maybeInitCodecWithFallback(MediaCodecRenderer.java:1103)


can anybody solve it


i tried to implement but i don't how to solve it . please decode this and get me correct result.


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