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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 -
Supporting all media types
13 avril 2011, parUnlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)
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Emballe Médias : Mettre en ligne simplement des documents
29 octobre 2010, parLe plugin emballe médias a été développé principalement pour la distribution mediaSPIP mais est également utilisé dans d’autres projets proches comme géodiversité par exemple. Plugins nécessaires et compatibles
Pour fonctionner ce plugin nécessite que d’autres plugins soient installés : CFG Saisies SPIP Bonux Diogène swfupload jqueryui
D’autres plugins peuvent être utilisés en complément afin d’améliorer ses capacités : Ancres douces Légendes photo_infos spipmotion (...)
Sur d’autres sites (3308)
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Camera app fails on android ffmpeg application
22 mars 2021, par connor449I am trying to run a simple video recorder app on android. The code is below :


package com.example.camera

//import android.R
import android.content.DialogInterface
import android.content.pm.PackageManager
import android.os.Build
import android.os.Bundle
import android.widget.Toast
import androidx.appcompat.app.AlertDialog
import androidx.appcompat.app.AppCompatActivity
import androidx.core.app.ActivityCompat
import androidx.core.content.ContextCompat
import com.arthenica.mobileffmpeg.FFmpeg


const val EXTRA_MESSAGE = "com.example.myfirstapp.MESSAGE"

class MainActivity : AppCompatActivity() {
 override fun onCreate(savedInstanceState: Bundle?) {
 super.onCreate(savedInstanceState)
 setContentView(R.layout.activity_main)
 if (checkPermission()) {
 //main logic or main code
 FFmpeg.execute("-f android_camera -i 0:0 -r 30 -pixel_format bgr0 -t 00:00:05 /sdcard/test.mp4")

 // . write your main code to execute, It will execute if the permission is already given.
 } else {
 requestPermission()
 }
 }

 private fun checkPermission(): Boolean {
 return if (ContextCompat.checkSelfPermission(this, android.Manifest.permission.CAMERA)
 != PackageManager.PERMISSION_GRANTED
 ) {
 // Permission is not granted
 false
 } else true
 }

 private fun requestPermission() {
 ActivityCompat.requestPermissions(
 this, arrayOf(android.Manifest.permission.CAMERA),
 PERMISSION_REQUEST_CODE
 )
 }

 override fun onRequestPermissionsResult(
 requestCode: Int,
 permissions: Array<string>,
 grantResults: IntArray
 ) {
 when (requestCode) {
 PERMISSION_REQUEST_CODE -> if (grantResults.size > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED
 ) {
 Toast.makeText(applicationContext, "Permission Granted", Toast.LENGTH_SHORT)
 .show()

 // main logic
 } else {
 Toast.makeText(applicationContext, "Permission Denied", Toast.LENGTH_SHORT)
 .show()
 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
 if (ContextCompat.checkSelfPermission(this, android.Manifest.permission.CAMERA)
 != PackageManager.PERMISSION_GRANTED
 ) {
 showMessageOKCancel("You need to allow access permissions",
 DialogInterface.OnClickListener { dialog, which ->
 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
 requestPermission()
 }
 })
 }
 }
 }
 }
 }

 private fun showMessageOKCancel(
 message: String,
 okListener: DialogInterface.OnClickListener
 ) {
 AlertDialog.Builder(this@MainActivity)
 .setMessage(message)
 .setPositiveButton("OK", okListener)
 .setNegativeButton("Cancel", null)
 .create()
 .show()
 }

 companion object {
 private const val PERMISSION_REQUEST_CODE = 200
 }
}


</string>

The main command to call the video recorder is here :


FFmpeg.execute("-f android_camera -i 0:0 -r 30 -pixel_format bgr0 -t 00:00:05 /sdcard/test.mp4")


The app opens on my android 10 Motorola G Power. I tap 'allow' for allowing permissions. Then the app crashes and I keep getting this error :


2021-03-22 13:42:51.534 31138-31138/com.example.camera E/AndroidRuntime: FATAL EXCEPTION: main
 Process: com.example.camera, PID: 31138
 java.lang.IllegalStateException: Could not find method sendMessage(View) in a parent or ancestor Context for android:onClick attribute defined on view class com.google.android.material.button.MaterialButton with id 'button2'
 at androidx.appcompat.app.AppCompatViewInflater$DeclaredOnClickListener.resolveMethod(AppCompatViewInflater.java:436)
 at androidx.appcompat.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:393)
 at android.view.View.performClick(View.java:7161)
 at com.google.android.material.button.MaterialButton.performClick(MaterialButton.java:967)
 at android.view.View.performClickInternal(View.java:7133)
 at android.view.View.access$3500(View.java:804)
 at android.view.View$PerformClick.run(View.java:27416)
 at android.os.Handler.handleCallback(Handler.java:883)
 at android.os.Handler.dispatchMessage(Handler.java:100)
 at android.os.Looper.loop(Looper.java:241)
 at android.app.ActivityThread.main(ActivityThread.java:7617)
 at java.lang.reflect.Method.invoke(Native Method)
 at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:941)
2021-03-22 13:42:51.546 31138-31138/com.example.camera I/Process: Sending signal. PID: 31138 SIG: 9


What am I doing wrong ? Please advise.


edit


layout xml


<?xml version="1.0" encoding="utf-8"?>


 

 



-
youtube-dl (ffmpeg) blank error on embedding subtitles
22 mars 2021, par Human1I am new to using youtube-dl, and therefore is quite unfamiliar with how it works. I configured it to download auto subs and english subs (if there were any), and embed them in the video. It worked for me for quite a good while (1 or 2 months), and it suddenly stopped working with blank errors starting to pop up, and I have no idea why that happened. I have checked that I am using the most updated version of youtube-dl and ffmpeg. I am currently using a m1 mac , and I don't know if that caused the problem. Below is the output I got with the
-vcommand, as well as some background information.

[debug] System config: []
[debug] User config: ['-o', '~/Documents/playlists/%(playlist)s/%(playlist_index)-i%(title)s.%(ext)s', '-f', 'mp4', '--write-sub', '--sub-lang', 'en', '--write-auto-sub', '--embed-subs']
[debug] Custom config: []
[debug] Command-line args: ['https://youtube.com/playlist?list=PL4cUxeGkcC9i3FXJSUfmsNOx8E7u6UuhG', '-v']
[debug] Encodings: locale UTF-8, fs utf-8, out utf-8, pref UTF-8
[debug] youtube-dl version 2021.03.14
[debug] Git HEAD: 59ada80ca
[debug] Python version 3.9.2 (CPython) - macOS-11.2.3-arm64-arm-64bit
[debug] exe versions: ffmpeg present, ffprobe present, rtmpdump 2.4
[debug] Proxy map: {}
[youtube:tab] PL4cUxeGkcC9i3FXJSUfmsNOx8E7u6UuhG: Downloading webpage
[download] Downloading playlist: CSS Flexbox Tutorial
[youtube:tab] playlist CSS Flexbox Tutorial: Downloading 12 videos
[download] Downloading video 1 of 12
[youtube] Y8zMYaD1bz0: Downloading webpage
[info] Writing video subtitles to: /Users/{username}/Documents/playlists/CSS Flexbox Tutorial/1CSS Flexbox Tutorial #1 - Introduction.en.vtt
[debug] Invoking downloader on 'https://r2---sn-45gpjx-3x4e.googlevideo.com/videoplayback?expire=1616392628&ei=VN1XYKikA9eo1gai6KegBg&ip=45.133.192.196&id=o-APtlxrUI2wU4tPFiSxBi5MzLnuR5EFYL3-TE-BpiPEYG&itag=22&source=youtube&requiressl=yes&mh=U3&mm=31%2C29&mn=sn-45gpjx-3x4e%2Csn-5hne6nlr&ms=au%2Crdu&mv=m&mvi=2&pl=24&initcwndbps=1155000&vprv=1&mime=video%2Fmp4&ns=r0wuXA2lBVMGhop9uJeEHHUF&ratebypass=yes&dur=317.161&lmt=1607169749865434&mt=1616370759&fvip=3&fexp=24001373%2C24007246&c=WEB&txp=5432434&n=_jK4PI5-7sa9Q0X2ye&sparams=expire%2Cei%2Cip%2Cid%2Citag%2Csource%2Crequiressl%2Cvprv%2Cmime%2Cns%2Cratebypass%2Cdur%2Clmt&sig=AOq0QJ8wRAIgR0wbVc18mWDheT_QVT5Jsbmd647wKJNyVfzGRJd_oOkCIArV-vvKQmD3D7W90dw1l9b3zaJQNzltitp3BJPt2fqA&lsparams=mh%2Cmm%2Cmn%2Cms%2Cmv%2Cmvi%2Cpl%2Cinitcwndbps&lsig=AG3C_xAwRgIhAI9I7LQw5zTAldgCydhe3yzicBgvxYfxeHxI8lCxh3sLAiEAlT8Dpf93fiPbdMI3rHOebH-nFkToCZr1VfWaoX0HVeg%3D'
[download] /Users/{username}/Documents/playlists/CSS Flexbox Tutorial/1CSS Flexbox Tutorial #1 - Introduction.mp4 has already been downloaded
[download] 100% of 16.50MiB
[ffmpeg] Embedding subtitles in '/Users/{username}/Documents/playlists/CSS Flexbox Tutorial/1CSS Flexbox Tutorial #1 - Introduction.mp4'
[debug] ffmpeg command line: ffmpeg -y -loglevel repeat+info -i 'file:/Users/{username}/Documents/playlists/CSS Flexbox Tutorial/1CSS Flexbox Tutorial #1 - Introduction.mp4' -i 'file:/Users/{username}/Documents/playlists/CSS Flexbox Tutorial/1CSS Flexbox Tutorial #1 - Introduction.en.vtt' -map 0 -c copy -map -0:s -map -0:d -c:s mov_text -map 1:0 -metadata:s:s:0 language=eng 'file:/Users/{username}/Documents/playlists/CSS Flexbox Tutorial/1CSS Flexbox Tutorial #1 - Introduction.temp.mp4'
ERROR: 
Traceback (most recent call last):
 File "/opt/homebrew/Cellar/youtube-dl/2021.3.14/libexec/lib/python3.9/site-packages/youtube_dl/YoutubeDL.py", line 2106, in post_process
 files_to_delete, info = pp.run(info)
 File "/opt/homebrew/Cellar/youtube-dl/2021.3.14/libexec/lib/python3.9/site-packages/youtube_dl/postprocessor/ffmpeg.py", line 426, in run
 self.run_ffmpeg_multiple_files(input_files, temp_filename, opts)
 File "/opt/homebrew/Cellar/youtube-dl/2021.3.14/libexec/lib/python3.9/site-packages/youtube_dl/postprocessor/ffmpeg.py", line 235, in run_ffmpeg_multiple_files
 raise FFmpegPostProcessorError(msg)
youtube_dl.postprocessor.ffmpeg.FFmpegPostProcessorError


I would be very grateful if anyone can tell me what happened and what should I do next. Thanks ! ;)


-
Algorithm when recording SegmentTimeline
24 mars 2021, par jgkim0518I packaged a media stream by mpeg-dash transcoded video at twice the speed and audio at normal speed.
Here is the command :


ffmpeg -re -stream_loop -1 -i timing_logic.mp4 -c:v hevc_nvenc -filter:v "setpts=2*PTS" -c:a libfdk_aac -map 0:v -map 0:a -f mpegts udp://xxx.xxx.xxx.xxx:xxxx?pkt_size=1316


The source information used here is as follows :


Input #0, mpegts, from '/home/test/timing_logic/timing_logic.mp4':
Duration: 00:00:30.22, start: 1.400000, bitrate: 16171 kb/s
Program 1
Metadata:
service_name : Service01
service_provider: FFmpeg
Stream #0:0[0x100]: Video: hevc (Main 10) (HEVC / 0x43564548), yuv420p10le(tv, bt709), 3840x2160 [SAR 1:1 DAR 16:9], 50 fps, 50 tbr, 90k tbn, 50 tbc
Stream #0:1[0x101](eng): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, fltp, 128 kb/s Stream mapping:
Stream #0:0 -> #0:0 (hevc (native) -> hevc (hevc_nvenc))
Stream #0:1 -> #0:1 (mp2 (native) -> aac (libfdk_aac))
Press [q] to stop, [?] for help
frame= 0 fps=0.0 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbits/s speed=N/A
frame= 0 fps=0.0 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbits/s speed=N/A
Output #0, mpegts, to 'udp://xxx.xxx.xxx.xxx:xxxx?pkt_size=1316':
Metadata:
encoder : Lavf58.45.100
Stream #0:0: Video: hevc (hevc_nvenc) (Main 10), p010le, 3840x2160 [SAR 1:1 DAR 16:9], q=-1--1, 2000 kb/s, 50 fps, 90k tbn, 50 tbc
Metadata:
encoder : Lavc58.91.100 hevc_nvenc
Side data:
cpb: bitrate max/min/avg: 0/0/2000000 buffer size: 4000000 vbv_delay: N/A
Stream #0:1(eng): Audio: aac (libfdk_aac), 48000 Hz, stereo, s16, 139 kb/s
Metadata:
encoder : Lavc58.91.100 libfdk_aac


My shaka packager command is :


packager \ 'in=udp://xxx.xxx.xxx.xxx:xxxx,stream=video,init_segment=/home/test/timing_logic/package/video/0/video.mp4,segment_template=/home/test/timing_logic/package/video/0/$Time$.m4s' \
'in=udp://xxx.xxx.xxx.xxx:xxxx,stream=audio,init_segment=/home/test/timing_logic/package/audio/0/audio.mp4,segment_template=/home/test/timing_logic/package/audio/0/$Time$.m4a' \
--segment_duration 5 --fragment_duration 5 --minimum_update_period 5 --min_buffer_time 5 \
--preserved_segments_outside_live_window 24 --time_shift_buffer_depth 40 \
--allow_codec_switching --allow_approximate_segment_timeline --log_file_generation_deletion \
--mpd_output $OUTPUT/$output_mpd.mpd &


Looking at the mpd generated as a result of packaging, the duration of the audio is twice that of the video, and the number of segments is half.
The following is the content of mpd :


<?xml version="1.0" encoding="UTF-8"?>

<mpd xmlns="urn:mpeg:dash:schema:mpd:2011" profiles="urn:mpeg:dash:profile:isoff-live:2011" minbuffertime="PT5S" type="dynamic" publishtime="2021-03-23T10:01:57Z" availabilitystarttime="2021-03-23T09:59:55Z" minimumupdateperiod="PT5S" timeshiftbufferdepth="PT40S">
<period start="PT0S">
<adaptationset contenttype="audio" segmentalignment="true">
<representation bandwidth="140020" codecs="mp4a.40.2" mimetype="audio/mp4" audiosamplingrate="48000">
<audiochannelconfiguration schemeiduri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="2"></audiochannelconfiguration>
<segmenttemplate timescale="90000" initialization="/home/test/timing_logic/package/audio/0/audio.mp4" media="/home/test/timing_logic/package/audio/0/$Time$.m4a" startnumber="16">
<segmenttimeline>
<s t="6751436" d="449280"></s>
<s t="7200716" d="451200"></s>
<s t="7651916" d="449280"></s>
<s t="8101196" d="374400"></s>
<s t="8551196" d="449280"></s>
<s t="9000476" d="451200"></s>
<s t="9451674" d="449280"></s>
<s t="9900956" d="449280"></s>
<s t="10350236" d="451200"></s>
<s t="10801434" d="374400"></s>
</segmenttimeline>
</segmenttemplate>
</representation>
</adaptationset>
<adaptationset contenttype="video" width="3840" height="2160" framerate="90000/3600" segmentalignment="true" par="16:9">
<representation bandwidth="1520392" codecs="hvc1.2.4.L153" mimetype="video/mp4" sar="1:1">
<segmenttemplate timescale="90000" initialization="/home/test/timing_logic/package/video/0/video.mp4" media="/home/test/timing_logic/package/video/0/$Time$.m4s" startnumber="19">
<segmenttimeline>
<s t="16954440" d="900000" r="4"></s>
</segmenttimeline>
</segmenttemplate>
</representation>
</adaptationset>
</period>
</mpd>


When looking at the MPD, it seems that the shaka packager checks the PTS or DTS of the TS when creating a segment and recording the contents of the SegmentTimeline.
But I couldn't understand even by looking at the MPEG standard documentation and the DASH-IF documentation.


My question is whether the packager refers to PTS or DTS when creating a segment.
How are SegmentTimeline's S@t and S@d recorded ?
What algorithm is the SegmentTimeline recorded with ? Please help me. Thank you.


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