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MediaSPIP 0.1 Beta version
25 avril 2011, parMediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
The zip file provided here only contains the sources of MediaSPIP in its standalone version.
To get a working installation, you must manually install all-software dependencies on the server.
If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...) -
Multilang : améliorer l’interface pour les blocs multilingues
18 février 2011, parMultilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela. -
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
Sur d’autres sites (13802)
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VLC huge buffering times over rtp for local H264 stream
15 mars 2022, par mikeI'm outputting an H264 stream, encoded by my application using ffmpeg. I can display it using
ffplay, but when trying to view the stream in VLC, I only get the first frame, or it looks like that's the case.

The messages output shows that it is "buffering", taking around a minute to get to 100% when the frame updates.
When using
ffplay, the latency is about 50-100ms at worst.

I am sending to
rtp://127.0.0.1:6666?pkt_size=1316with the formatrtp_mpegts.
I am new to this and it's highly likely I haven't set the frame up completely correctly. The process is (minus declarations and error checking)

codec_name = "libx264";
codec = avcodec_find_encoder_by_name(codec_name.c_str());
context = avcodec_alloc_context3(codec);
pkt = av_packet_alloc();
context->bit_rate = 5 * Mega;
context->width = info.DisplayWidth;
context->height = info.DisplayHeight;
context->time_base = { 1, FPS };
context->framerate = { FPS, 1 };
context->gop_size = 100;
context->max_b_frames = 1; 
context->pix_fmt = AV_PIX_FMT_YUV420P;
if (codec->id == AV_CODEC_ID_H264)
 {
 check_ret("set option: preset", av_opt_set(context->priv_data, "preset", "fast", 0));
 check_ret("set option: tune", av_opt_set(context->priv_data, "tune", "zerolatency", 0));
 check_ret("set option: profile", av_opt_set(context->priv_data, "profile", "baseline", 0)); 
 }
check_ret("open codec", avcodec_open2(context, codec, NULL));

// setup the stream 
fmt = (AVOutputFormat*)av_guess_format("rtp_mpegts", NULL, NULL);

avformat_alloc_output_context2(&avfctx, fmt, fmt->name,
 "rtp://127.0.0.1:6666?pkt_size=1316"); 
 
avio_open(&avfctx->pb, avfctx->url, AVIO_FLAG_WRITE);
AVStream* stream = avformat_new_stream(avfctx, codec);
avcodec_parameters_from_context(stream->codecpar, context);
stream->time_base.num = 1;
stream->time_base.den = FPS;
avformat_write_header(avfctx, NULL);

// then the encoding (in an output loop)
<not get="get" frame="frame" from="from" rgba="rgba" to="to" yuv="yuv">
yuvFrame->pts = i++; // i is incremented every frame
avcodec_send_frame(enc_ctx, yuvFrame);
 while (ret >= 0) {
 ret = avcodec_receive_packet(enc_ctx, pkt); 
 //ret = av_interleaved_write_frame(avfctx, pkt); was using this, don't seem to need it
 ret = av_write_frame(avfctx, pkt);
 av_packet_unref(pkt);
}
</not>

The VLC output looks like this :


main debug: using hw decoder module "d3d11va"
avcodec info: Using D3D11VA (NVIDIA GeForce RTX 2080 Super with Max-Q Design, vendor 10de(NVIDIA), device 1e93, revision a1) for hardware decoding
qt debug: Logical video size: 1280x720
main debug: resized to 1280x720
main debug: VoutDisplayEvent 'resize' 1280x720
main debug: Received first picture
main debug: Buffering 1%
main debug: Buffering 2%
main debug: Buffering 3%
main debug: auto hiding mouse cursor
main debug: Buffering 4%
main debug: Buffering 5%
main debug: Buffering 6%
main debug: Buffering 7%
main debug: Buffering 8%
main debug: Buffering 9%
main debug: Buffering 10%
main debug: auto hiding mouse cursor
main debug: Buffering 11%
rtp warning: 1 packet(s) lost
rtp warning: 1 packet(s) lost
rtp warning: 1 packet(s) lost
ts warning: discontinuity received 0x3 instead of 0xd (pid=256)
ts warning: discontinuity received 0x5 instead of 0xf (pid=256)
ts warning: discontinuity received 0x1 instead of 0xb (pid=256)
main debug: Buffering 12%
main debug: Buffering 13%
main debug: Buffering 14%
main debug: Buffering 15%
main debug: Buffering 16%
main debug: Buffering 17%
main debug: Buffering 18%
main debug: auto hiding mouse cursor
main debug: Buffering 19%
main debug: Buffering 20%


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swscale/arm/yuv2rgb : save a few instructions by processing the luma line interleaved
28 mars 2016, par Matthieu Bouron -
How do I use fffmpeg save the individual frames of a GIF into PNGs ?
11 novembre 2020, par adnauseamI have a
.giffile on my filesystem and I want all of its frames to be saved as.pngfiles. How can I do this with ffmpeg ?

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