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Autres articles (111)
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La file d’attente de SPIPmotion
28 novembre 2010, parUne file d’attente stockée dans la base de donnée
Lors de son installation, SPIPmotion crée une nouvelle table dans la base de donnée intitulée spip_spipmotion_attentes.
Cette nouvelle table est constituée des champs suivants : id_spipmotion_attente, l’identifiant numérique unique de la tâche à traiter ; id_document, l’identifiant numérique du document original à encoder ; id_objet l’identifiant unique de l’objet auquel le document encodé devra être attaché automatiquement ; objet, le type d’objet auquel (...) -
Contribute to documentation
13 avril 2011Documentation is vital to the development of improved technical capabilities.
MediaSPIP welcomes documentation by users as well as developers - including : critique of existing features and functions articles contributed by developers, administrators, content producers and editors screenshots to illustrate the above translations of existing documentation into other languages
To contribute, register to the project users’ mailing (...) -
Ajouter des informations spécifiques aux utilisateurs et autres modifications de comportement liées aux auteurs
12 avril 2011, parLa manière la plus simple d’ajouter des informations aux auteurs est d’installer le plugin Inscription3. Il permet également de modifier certains comportements liés aux utilisateurs (référez-vous à sa documentation pour plus d’informations).
Il est également possible d’ajouter des champs aux auteurs en installant les plugins champs extras 2 et Interface pour champs extras.
Sur d’autres sites (7993)
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(ffmpeg.autogen)How can i Play RTSP Stream Audio With Video
1er octobre 2018, par newbieI am making rtsp stream player to use opencv..
The example Project is wonderful.
But that is with not Sound
I Added thid Code and I think I found Audio Stream Number, but I don’t know next step
private readonly AVCodecContext* _aCodecContext;
private readonly AVFormatContext* _aFormatContext;
private readonly int _a_streamIndex;
public VideoStreamDecoder(string url)
{
_vFormatContext = ffmpeg.avformat_alloc_context();
var pFormatContext = _vFormatContext;
ffmpeg.avformat_open_input(&pFormatContext, url, null, null).ThrowExceptionIfError();
ffmpeg.avformat_find_stream_info(_vFormatContext, null).ThrowExceptionIfError();
// find the first video stream
AVStream* vStream = null;
for (var i = 0; i < _vFormatContext->nb_streams; i++)
if (_vFormatContext->streams[i]->codec->codec_type == AVMediaType.AVMEDIA_TYPE_VIDEO)
{
vStream = _vFormatContext->streams[i];
break;
}
// find Audio stream
AVStream* aStream = null;
for (var i = 0; i < _vFormatContext->nb_streams; i++)
if (_vFormatContext->streams[i]->codec->codec_type == AVMediaType.AVMEDIA_TYPE_AUDIO)
{
aStream = _vFormatContext->streams[i];
break;
}
if (vStream == null) throw new InvalidOperationException("Could not found video stream.");
_v_streamIndex = vStream->index;
_vCodecContext = vStream->codec;
_a_streamIndex = aStream->index;
_aCodecContext = aStream->codec;
var vcodecId = _vCodecContext->codec_id;
var vCodec = ffmpeg.avcodec_find_decoder(vcodecId);
var acodecId = _aCodecContext->codec_id;
var aCodec = ffmpeg.avcodec_find_decoder(acodecId);
if (vCodec == null) throw new InvalidOperationException("Unsupported codec.");
ffmpeg.avcodec_open2(_vCodecContext, vCodec, null).ThrowExceptionIfError();
ffmpeg.avcodec_open2(_aCodecContext, aCodec, null).ThrowExceptionIfError();
vCodecName = ffmpeg.avcodec_get_name(vcodecId);
aCodecName = ffmpeg.avcodec_get_name(acodecId);
FrameSize = new Size(_vCodecContext->width, _vCodecContext->height);
PixelFormat = _vCodecContext->pix_fmt;
_pPacket = ffmpeg.av_packet_alloc();
_pFrame = ffmpeg.av_frame_alloc();
} -
on('progress') not working - node.js ytdl-core fluent-ffmpeg
9 juillet 2018, par TheBandoleroSo i’m playing with this libraries
ytdl-core
andfluent-ffmpeg
, and basically i got to this function by modifying some examples to fit what i wanted.everything works fine except for the second
on('progress', progress => ....)
call. The first one works as expected, but the second one looks like it isn’t even reached, sinceConsole.log()
inside the secondon('progress'....)
isn’t logging anything at all.Also console doesn’t show any errors throughout the whole function, and the outcome is the expected without any problem, except for the second
on('progress')
issue.I can’t figure out what the problem is, so I hope somebody with more experience can point the problem out to me, since it’s getting quite frustrating now...
function descargarVideoHD(link) {
ytdl.getInfo(link, (err, info) => {
if (err) throw err;
$('li:contains(' + link + ') .progress').css("visibility", "visible");
var longitudEnTiempo = parseInt(info.length_seconds);
let id = ytdl.getURLVideoID(link);
var titulo = limpiarTituloDelVideo(info.title);
let stream = ytdl(id, {
quality: 'highestaudio',
//filter: 'audioonly',
});
//var audioOutput = path.resolve(__dirname, 'audio_' + titulo + '.mp4');
var mainOutput = path.resolve(__dirname, titulo + '.mp4');
var renameFileName = titulo + '.mp4';
var audioOutput = path.resolve(__dirname, titulo + '.mp3');
ffmpeg(stream)
//.audioBitrate(128)
.audioBitrate(256)
.save(`${__dirname}/${titulo}.mp3`)
.on('progress', (p) => {
//readline.cursorTo(process.stdout, 0);
//process.stdout.write(`${p.targetSize}kb downloaded`);
var hmsA = p.timemark;
var aA = hmsA.split(':');
var secondsA = parseInt((+aA[0]) * 60 * 60 + (+aA[1]) * 60 + (+aA[2]));
var porcentageA = (((secondsA / longitudEnTiempo) * 100) / 2).toFixed(2);
$('li:contains(' + link + ') .progress .determinate').css("width", porcentageA + "%");
//console.log(titulo + ' procesado al ' + porcentage + '%');
})
.on('end', () => {
ffmpeg()
.input(ytdl(link, {
filter: format => {
return format.container === 'mp4' && !format.audioEncoding;
}
}))
.videoCodec('copy')
.input(audioOutput)
.audioCodec('copy')
.save(mainOutput)
.on('error', console.error)
.on('progress', progress => {
console.log('Dentro de OnProgress...');
var hms = progress.timemark;
console.log('Timemark: ' + hms);
var a = hms.split(':');
var seconds = parseInt((+a[0]) * 60 * 60 + (+a[1]) * 60 + (+a[2]));
console.log('Segundos: ' + seconds);
var porcentage = ((((seconds / longitudEnTiempo) * 100) / 2) + 50).toFixed(2);
console.log('Procesado al ' + porcentage + '%');
$('li:contains(' + link + ') .progress .determinate').css("width", porcentage + "%");
}).on('end', () => {
fs.unlink(audioOutput, err => {
if (err) {
console.error(err);
}
else {
$('li:contains(' + link + ') .progress .determinate').css("width", "100%");
$('li:contains(' + link + ') .secondary-content.material-icons').text('done');
$('li:contains(' + link + ') .secondary-content.material-icons').addClass('text-green');
/* $('li:contains(' + link + ')').remove();
var indexItem = listaEnlacesYoutube.indexOf(link);
listaEnlacesYoutube.splice(indexItem, 1); */
}
});
});
});
});
} -
libmp3lame ignore ffmpeg options, and can not change audio bitrate
27 août 2018, par Ahmedi have java application to encode audio and send it via socket to server, i use ffmpeg to get compressed avpacket then send this packet via socket , the problem is the bandwidth is large than what is want, and can not control it, i try to set bitrate option to encoder (libmp3lame) but it’s ignore it completely, and i don not know is the problem from code or because i did not use ffmpeg libformat to send the packet to socket ?
this how i open a codec
codec = avcodec_find_encoder_by_name("libmp3lame");
//codec = avcodec_find_encoder(AV_CODEC_ID_MP3);
if(codec == null)
throw new Exception("Codec not found");
context = avcodec_alloc_context3(codec);
if(context == null)
throw new Exception("Could not allocate audio codec context");
context.codec_tag(0);
context.codec_id(AV_CODEC_ID_MP3);
context.codec_type(AVMEDIA_TYPE_AUDIO);
// set sample parameter
context.bit_rate(audio_bitrate);
context.sample_rate(samples_rate);
context.channels(samples_channels);
context.channel_layout(av_get_default_channel_layout(samples_channels));
context.time_base().num(1).den(samples_rate);
context.sample_fmt(AV_SAMPLE_FMT_S16);
context.bits_per_raw_sample(16);
context.flags(context.flags() | AV_CODEC_FLAG_QSCALE);
context.global_quality((int)Math.round(FF_QP2LAMBDA * audioQuality));
if ((codec.capabilities() & AV_CODEC_CAP_EXPERIMENTAL) != 0) {
context.strict_std_compliance(AVCodecContext.FF_COMPLIANCE_EXPERIMENTAL);
}
// priv_data()
av_opt_set(context.priv_data() , "crf" , audioQuality + "" , 0);
av_opt_set(context.priv_data() , "b" , "85" , 0);
//av_opt_set(context.priv_data() , "V" , "2" , 0);
//av_opt_set(context.priv_data() , "lowpass" , "120" , 0);
av_opt_set(context.priv_data() , "abr" , "1" , 0);
AVDictionary options = new AVDictionary(null);
//av_dict_set(options, "crf", ""+audioQuality , 0);
av_dict_set(options, "b:a", "8k" , 0);
av_dict_set(options , "q:a" , "8" , 0);
//av_dict_set(options , "lowpass" , "19.5" , 0);
//av_dict_set(options, "b" , "8K" , 0);
// open codec
if (avcodec_open2(context, codec, (PointerPointer)null ) < 0)
throw new Exception("Could not open codec");
....