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Autres articles (100)
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List of compatible distributions
26 avril 2011, parThe table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...) -
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 -
Activation de l’inscription des visiteurs
12 avril 2011, parIl est également possible d’activer l’inscription des visiteurs ce qui permettra à tout un chacun d’ouvrir soit même un compte sur le canal en question dans le cadre de projets ouverts par exemple.
Pour ce faire, il suffit d’aller dans l’espace de configuration du site en choisissant le sous menus "Gestion des utilisateurs". Le premier formulaire visible correspond à cette fonctionnalité.
Par défaut, MediaSPIP a créé lors de son initialisation un élément de menu dans le menu du haut de la page menant (...)
Sur d’autres sites (9054)
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FFMPEG and HTTPS
14 juin 2012, par Joelffmpeg lists http as a protocol when I ask : ffmpeg -protocols
Does this also mean support for a https url ? Do I need to encode this url somehow for the command line. I get "No such file or directory", but with http urls (at least some) it does work.
A url (created for a Amazon S3 bucket) similar to this one does not seem to work :
https://mycompany-video-test.s3.amazonaws.com/client/btr/video/xyz0011-x403-snap-n-go-ex/1/video/baby-laugh-ripping-paper.mp4?AWSAccessKeyId=AVIAZL9J6SIRPAA&Expires=1323709667&Signature=pTvS9F2do2t8%3DI suspect the format of the url is problematic, I've also tried enclosing in quotes... Yes, this URL does not currently work as it has expired, but even while its valid, its a problem.
In short :
1) Should https work ?
2) Do I need to format the url somehow ? -
Play video using mse (media source extension) in google chrome
23 août 2019, par liyuqihxcI’m working on a project that convert rtsp stream (ffmpeg) and play it on the web page (signalr + mse).
So far it works pretty much as I expected on the latest version of edge and firefox, but not chrome.
here’s the code
public class WebmMediaStreamContext
{
private Process _ffProcess;
private readonly string _cmd;
private byte[] _initSegment;
private Task _readMediaStreamTask;
private CancellationTokenSource _cancellationTokenSource;
private const string _CmdTemplate = "-i {0} -c:v libvpx -tile-columns 4 -frame-parallel 1 -keyint_min 90 -g 90 -f webm -dash 1 pipe:";
public static readonly byte[] ClusterStart = { 0x1F, 0x43, 0xB6, 0x75, 0x01, 0x00, 0x00, 0x00 };
public event EventHandler<clusterreadyeventargs> ClusterReadyEvent;
public WebmMediaStreamContext(string rtspFeed)
{
_cmd = string.Format(_CmdTemplate, rtspFeed);
}
public async Task StartConverting()
{
if (_ffProcess != null)
throw new InvalidOperationException();
_ffProcess = new Process();
_ffProcess.StartInfo = new ProcessStartInfo
{
FileName = "ffmpeg/ffmpeg.exe",
Arguments = _cmd,
UseShellExecute = false,
CreateNoWindow = true,
RedirectStandardOutput = true
};
_ffProcess.Start();
_initSegment = await ParseInitSegmentAndStartReadMediaStream();
}
public byte[] GetInitSegment()
{
return _initSegment;
}
// Find the first cluster， and everything before it is the InitSegment
private async Task ParseInitSegmentAndStartReadMediaStream()
{
Memory<byte> buffer = new byte[10 * 1024];
int length = 0;
while (length != buffer.Length)
{
length += await _ffProcess.StandardOutput.BaseStream.ReadAsync(buffer.Slice(length));
int cluster = buffer.Span.IndexOf(ClusterStart);
if (cluster >= 0)
{
_cancellationTokenSource = new CancellationTokenSource();
_readMediaStreamTask = new Task(() => ReadMediaStreamProc(buffer.Slice(cluster, length - cluster).ToArray(), _cancellationTokenSource.Token), _cancellationTokenSource.Token, TaskCreationOptions.LongRunning);
_readMediaStreamTask.Start();
return buffer.Slice(0, cluster).ToArray();
}
}
throw new InvalidOperationException();
}
private void ReadMoreBytes(Span<byte> buffer)
{
int size = buffer.Length;
while (size > 0)
{
int len = _ffProcess.StandardOutput.BaseStream.Read(buffer.Slice(buffer.Length - size));
size -= len;
}
}
// Parse every single cluster and fire ClusterReadyEvent
private void ReadMediaStreamProc(byte[] bytesRead, CancellationToken cancel)
{
Span<byte> buffer = new byte[5 * 1024 * 1024];
bytesRead.CopyTo(buffer);
int bufferEmptyIndex = bytesRead.Length;
do
{
if (bufferEmptyIndex < ClusterStart.Length + 4)
{
ReadMoreBytes(buffer.Slice(bufferEmptyIndex, 1024));
bufferEmptyIndex += 1024;
}
int clusterDataSize = BitConverter.ToInt32(
buffer.Slice(ClusterStart.Length, 4)
.ToArray()
.Reverse()
.ToArray()
);
int clusterSize = ClusterStart.Length + 4 + clusterDataSize;
if (clusterSize > buffer.Length)
{
byte[] newBuffer = new byte[clusterSize];
buffer.Slice(0, bufferEmptyIndex).CopyTo(newBuffer);
buffer = newBuffer;
}
if (bufferEmptyIndex < clusterSize)
{
ReadMoreBytes(buffer.Slice(bufferEmptyIndex, clusterSize - bufferEmptyIndex));
bufferEmptyIndex = clusterSize;
}
ClusterReadyEvent?.Invoke(this, new ClusterReadyEventArgs(buffer.Slice(0, bufferEmptyIndex).ToArray()));
bufferEmptyIndex = 0;
} while (!cancel.IsCancellationRequested);
}
}
</byte></byte></byte></clusterreadyeventargs>I use ffmpeg to convert the rtsp stream to vp8 WEBM byte stream and parse it to "Init Segment" (ebml head、info、tracks...) and "Media Segment" (cluster)， then send it to browser via signalR
$(function () {
var mediaSource = new MediaSource();
var mimeCodec = 'video/webm; codecs="vp8"';
var video = document.getElementById('video');
mediaSource.addEventListener('sourceopen', callback, false);
function callback(e) {
var sourceBuffer = mediaSource.addSourceBuffer(mimeCodec);
var queue = [];
sourceBuffer.addEventListener('updateend', function () {
if (queue.length === 0) {
return;
}
var base64 = queue[0];
if (base64.length === 0) {
mediaSource.endOfStream();
queue.shift();
return;
} else {
var buffer = new Uint8Array(atob(base64).split("").map(function (c) {
return c.charCodeAt(0);
}));
sourceBuffer.appendBuffer(buffer);
queue.shift();
}
}, false);
var connection = new signalR.HubConnectionBuilder()
.withUrl("/signalr-video")
.configureLogging(signalR.LogLevel.Information)
.build();
connection.start().then(function () {
connection.stream("InitVideoReceive")
.subscribe({
next: function(item) {
if (queue.length === 0 && !!!sourceBuffer.updating) {
var buffer = new Uint8Array(atob(item).split("").map(function (c) {
return c.charCodeAt(0);
}));
sourceBuffer.appendBuffer(buffer);
console.log(blockindex++ + " : " + buffer.byteLength);
} else {
queue.push(item);
}
},
complete: function () {
queue.push('');
},
error: function (err) {
console.error(err);
}
});
});
}
video.src = window.URL.createObjectURL(mediaSource);
})chrome just play the video for 3 5 seconds and then stop for buffering, even though there are plenty of cluster transfered and inserted into SourceBuffer.
here’s the information in chrome ://media-internals/
Player Properties :
render_id: 217
player_id: 1
origin_url: http://localhost:52531/
frame_url: http://localhost:52531/
frame_title: Home Page
url: blob:http://localhost:52531/dcb25d89-9830-40a5-ba88-33c13b5c03eb
info: Selected FFmpegVideoDecoder for video decoding, config: codec: vp8 format: 1 profile: vp8 coded size: [1280,720] visible rect: [0,0,1280,720] natural size: [1280,720] has extra data? false encryption scheme: Unencrypted rotation: 0°
pipeline_state: kSuspended
found_video_stream: true
video_codec_name: vp8
video_dds: false
video_decoder: FFmpegVideoDecoder
duration: unknown
height: 720
width: 1280
video_buffering_state: BUFFERING_HAVE_NOTHING
for_suspended_start: false
pipeline_buffering_state: BUFFERING_HAVE_NOTHING
event: PAUSELog
Timestamp Property Value
00:00:00 00 origin_url http://localhost:52531/
00:00:00 00 frame_url http://localhost:52531/
00:00:00 00 frame_title Home Page
00:00:00 00 url blob:http://localhost:52531/dcb25d89-9830-40a5-ba88-33c13b5c03eb
00:00:00 00 info ChunkDemuxer: buffering by DTS
00:00:00 35 pipeline_state kStarting
00:00:15 213 found_video_stream true
00:00:15 213 video_codec_name vp8
00:00:15 216 video_dds false
00:00:15 216 video_decoder FFmpegVideoDecoder
00:00:15 216 info Selected FFmpegVideoDecoder for video decoding, config: codec: vp8 format: 1 profile: vp8 coded size: [1280,720] visible rect: [0,0,1280,720] natural size: [1280,720] has extra data? false encryption scheme: Unencrypted rotation: 0°
00:00:15 216 pipeline_state kPlaying
00:00:15 213 duration unknown
00:00:16 661 height 720
00:00:16 661 width 1280
00:00:16 665 video_buffering_state BUFFERING_HAVE_ENOUGH
00:00:16 665 for_suspended_start false
00:00:16 665 pipeline_buffering_state BUFFERING_HAVE_ENOUGH
00:00:16 667 pipeline_state kSuspending
00:00:16 670 pipeline_state kSuspended
00:00:52 759 info Effective playback rate changed from 0 to 1
00:00:52 759 event PLAY
00:00:52 759 pipeline_state kResuming
00:00:52 760 video_dds false
00:00:52 760 video_decoder FFmpegVideoDecoder
00:00:52 760 info Selected FFmpegVideoDecoder for video decoding, config: codec: vp8 format: 1 profile: vp8 coded size: [1280,720] visible rect: [0,0,1280,720] natural size: [1280,720] has extra data? false encryption scheme: Unencrypted rotation: 0°
00:00:52 760 pipeline_state kPlaying
00:00:52 793 height 720
00:00:52 793 width 1280
00:00:52 798 video_buffering_state BUFFERING_HAVE_ENOUGH
00:00:52 798 for_suspended_start false
00:00:52 798 pipeline_buffering_state BUFFERING_HAVE_ENOUGH
00:00:56 278 video_buffering_state BUFFERING_HAVE_NOTHING
00:00:56 295 for_suspended_start false
00:00:56 295 pipeline_buffering_state BUFFERING_HAVE_NOTHING
00:01:20 717 event PAUSE
00:01:33 538 event PLAY
00:01:35 94 event PAUSE
00:01:55 561 pipeline_state kSuspending
00:01:55 563 pipeline_state kSuspendedCan someone tell me what’s wrong with my code, or dose chrome require some magic configuration to work ?
Thanks
Please excuse my english :)
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Is it possible to convert all video files in subdirectories on google drive using ffmpeg & rclone ?
24 avril 2020, par rmsCurrently I'm using this code whereby rclone fetches 1 file from my google drive, converts it using ffpmeg on a server and moves the converted files to the same folder. It's shown as below.
Step 1 is generating a list over which rclone can iterate over and the conversion process begins with the second script in step 2



step 1



rclone lsf "gdrive:/folder" --files-only > list.txt



step 2



while read file; do
 rclone copy "gdrive:/folder/""$file" . -P
 ffmpeg -i "$file" -vf scale=-1:540 -vcodec libx265 -crf 26 "${file%.*}.mkv" null
 rm -f "$file"
 rclone move . "gdrive:/folder/" --exclude list.txt -P
done code>


However, some sub directories have nested videos to convert which would rather take a long time if I'm to do it for every folder. This brought me to my question whether it's possible to modify the above process to work with subdirectories.



I've tried
rclone lsfto generate the list recursively using the-Rflag but ffmpeg doesn't seem to read the file from the list to make it work. Is there a way to make this work with some tweaking possibly ?

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