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Médias (1)
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Video d’abeille en portrait
14 mai 2011, par
Mis à jour : Février 2012
Langue : français
Type : Video
Autres articles (46)
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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 -
Librairies et logiciels spécifiques aux médias
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Il est important, après avoir installé apache2, mysql et php5, d’installer d’autres logiciels nécessaires dont les installations sont décrites dans les liens afférants. Un ensemble de librairies multimedias (x264, libtheora, libvpx) utilisées pour l’encodage et le décodage des vidéos et sons afin de supporter le plus grand nombre de fichiers possibles. Cf. : ce tutoriel ; FFMpeg avec le maximum de décodeurs et (...) -
HTML5 audio and video support
13 avril 2011, parMediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
For older browsers the Flowplayer flash fallback is used.
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Sur d’autres sites (8547)
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FFMPEG Incredibly Slow On Windows Server 2016
1er août 2019, par Ben GardnerI have a t2.small (2GB RAM, 1 vCPU) Amazon EC2 instance running a process using FFMPEG. It runs just fine ( 30 fps) on my computer (i7, 12GB RAM), but at around 2 fps on the server. Here’s the command :
rescale_command = f'ffmpeg -i {srcVideo} -filter_complex \"scale={owidth}:{oheight}, setsar=1:1, pad={dim[0]}:{dim[1]}:{oofx}:{oofy}\" {destVideo}'
I’ve tried uninstalling and reinstalling ffmpeg/ffprobe
Edited per llogan’s request, I’ve also discovered that it’s relatively speedy towards the beginning (I’m rescaling 100 times over the course of the program) and slows down towards the end.
It utilizes 100% of the CPU even from the beginning, though.
Example command/output :
ffmpeg -i media/8-1-2019/hi/dl-107.mp4 -filter_complex "scale=607:1080, setsar=1:1, pad=1920:1080:656:0" media/8-1-2019/hi/sl-107.mp4
ffmpeg version 3.2 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 5.4.0 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-libebur128 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zlib
libavutil 55. 34.100 / 55. 34.100
libavcodec 57. 64.100 / 57. 64.100
libavformat 57. 56.100 / 57. 56.100
libavdevice 57. 1.100 / 57. 1.100
libavfilter 6. 65.100 / 6. 65.100
libswscale 4. 2.100 / 4. 2.100
libswresample 2. 3.100 / 2. 3.100
libpostproc 54. 1.100 / 54. 1.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'media/8-1-2019/hi/dl-107.mp4':
Metadata:
minor_version : 512
major_brand : isom
compatible_brands: isomiso2avc1mp41
comment : vid:v09044ce0000bks3802jqrog167l3rf0
encoder : Lavf58.20.100
Duration: 00:00:15.12, start: 0.000000, bitrate: 1046 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 540x960 [SAR 1:1 DAR 9:16], 972 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 64 kb/s (default)
Metadata:
handler_name : SoundHandler
[Parsed_setsar_1 @ 00000000023ac840] num:den syntax is deprecated, please use num/den or named options instead
[Parsed_setsar_1 @ 00000000023ad2c0] num:den syntax is deprecated, please use num/den or named options instead
[libx264 @ 00000000023ad800] using SAR=1/1
[libx264 @ 00000000023ad800] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 00000000023ad800] profile High, level 4.0
[libx264 @ 00000000023ad800] 264 - core 148 r2721 72d53ab - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=1 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'media/8-1-2019/hi/sl-107.mp4':
Metadata:
minor_version : 512
major_brand : isom
compatible_brands: isomiso2avc1mp41
comment : vid:v09044ce0000bks3802jqrog167l3rf0
encoder : Lavf57.56.100
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 29.97 fps, 30k tbn, 29.97 tbc (default)
Metadata:
encoder : Lavc57.64.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, fltp, 128 kb/s (default)
Metadata:
handler_name : SoundHandler
encoder : Lavc57.64.100 aac
Stream mapping:
Stream #0:0 (h264) -> scale (graph 0)
pad (graph 0) -> Stream #0:0 (libx264)
Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
frame= 453 fps=3.6 q=29.0 Lsize= 3016kB time=00:00:15.01 bitrate=1645.7kbits/s speed=0.12x
video:2763kB audio:237kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.576820%
[libx264 @ 00000000023ad800] frame I:6 Avg QP:20.93 size: 38467
[libx264 @ 00000000023ad800] frame P:118 Avg QP:23.12 size: 11624
[libx264 @ 00000000023ad800] frame B:329 Avg QP:25.19 size: 3725
[libx264 @ 00000000023ad800] consecutive B-frames: 1.8% 2.6% 4.6% 90.9%
[libx264 @ 00000000023ad800] mb I I16..4: 16.4% 76.7% 6.9%
[libx264 @ 00000000023ad800] mb P I16..4: 2.3% 5.8% 0.9% P16..4: 9.8% 3.8% 1.6% 0.0% 0.0% skip:75.7%
[libx264 @ 00000000023ad800] mb B I16..4: 0.4% 0.7% 0.1% B16..8: 9.5% 1.6% 0.3% direct: 0.6% skip:86.8% L0:43.0% L1:50.8% BI: 6.2%
[libx264 @ 00000000023ad800] 8x8 transform intra:67.4% inter:78.3%
[libx264 @ 00000000023ad800] coded y,uvDC,uvAC intra: 32.5% 40.1% 9.4% inter: 2.7% 3.9% 0.1%
[libx264 @ 00000000023ad800] i16 v,h,dc,p: 50% 25% 6% 19%
[libx264 @ 00000000023ad800] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 38% 11% 27% 3% 3% 5% 3% 6% 3%
[libx264 @ 00000000023ad800] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 43% 11% 12% 5% 7% 9% 4% 7% 3%
[libx264 @ 00000000023ad800] i8c dc,h,v,p: 62% 11% 22% 5%
[libx264 @ 00000000023ad800] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 00000000023ad800] ref P L0: 64.4% 14.3% 16.1% 5.2%
[libx264 @ 00000000023ad800] ref B L0: 90.6% 7.5% 2.0%
[libx264 @ 00000000023ad800] ref B L1: 97.7% 2.3%
[libx264 @ 00000000023ad800] kb/s:1496.84
[aac @ 0000000000628120] Qavg: 754.761 -
How to silent the MP3 decoding process
3 août 2019, par GoluI am learning ffmpeg and I made a MP3 decoder but when I am executing it , some kind of information is printing on my terminal but I don’t want it. So how to silent it ?
Here is code (full code)
/* FFmpeg Usage Example
* Date : 28 July 2019
*/
#include
#include <libavformat></libavformat>avformat.h>
#include <libavcodec></libavcodec>avcodec.h>
#include <libavutil></libavutil>avutil.h>
#include
int decode_packet(AVCodecContext*, AVPacket*, AVFrame*);
int main(void) {
AVFormatContext *pFormatContext = avformat_alloc_context();
AVCodecParameters *pCodecParameters = NULL;
if(avformat_open_input(&pFormatContext,"song.mp3",NULL,NULL)!=0) {
fprintf(stderr,"Could not open file\n");
return -1;
}
if(avformat_find_stream_info(pFormatContext,NULL)<0) {
fprintf(stderr,"Could not find stream\n");
return -1;
}
size_t stream_index = 0;
for(;stream_indexnb_streams;stream_index++) {
if(pFormatContext->streams[stream_index]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
pCodecParameters = pFormatContext->streams[stream_index]->codecpar;
}
break;
}
if(stream_index == -1) {
fprintf(stderr,"could not retrive stream info from file\n");
return -1;
}
AVStream *stream = pFormatContext->streams[stream_index];
pCodecParameters = stream->codecpar;
AVCodec *cdc = avcodec_find_decoder(pCodecParameters->codec_id);
AVCodecContext *cdc_ctx = avcodec_alloc_context3(cdc);
assert(pCodecParameters);
if(avcodec_parameters_to_context(cdc_ctx,pCodecParameters) < 0) {
fprintf(stderr,"Can't copy params to codec context\n");
return -1;
}
if(avcodec_open2(cdc_ctx,cdc,NULL) < 0) {
fprintf(stderr,"Failed to open decoder for stream\n");
return -1;
}
AVFrame *frame = av_frame_alloc();
if(!frame) {
fprintf(stderr,"could not allocate memory for frame\n");
return -1;
}
AVPacket *packet = av_packet_alloc();
// av_init_packet(&packet);
if(!packet) {
fprintf(stderr,"could not allocate memory for packet");
return -1;
}
packet->data=NULL;
packet->size=0;
// lets read the packets
while(av_read_frame(pFormatContext,packet) >= 0) {
if(packet->stream_index==stream_index) {
int response = 0 ;
response = decode_packet(cdc_ctx,packet,frame);
if(response < 0)
continue;
}
av_packet_unref(packet);
}
return 0;
}
int decode_packet(AVCodecContext *cdc_ctx , AVPacket *pkt, AVFrame *frm) {
int response = avcodec_send_packet(cdc_ctx,pkt);
if(response < 0)
return response;
while(response >= 0) {
response = avcodec_receive_frame(cdc_ctx,frm);
if(response == AVERROR(EAGAIN) || response == AVERROR_EOF)
return -1;
else if(response < 0)
return response;
}
return 0;
}Expected behaviour : nothing should be printed on screen
Actual behaviour : some kind of logs are printing automatically
Here is output logs ( some of them )
[mp3float @ 0x75172e7400] overread, skip -6 enddists: -5 -5
[mp3float @ 0x75172e7400] overread, skip -7 enddists: -6 -6
[mp3float @ 0x75172e7400] overread, skip -6 enddists: -5 -5
[mp3float @ 0x75172e7400] overread, skip -6 enddists: -4 -4 -
split quadri audio file into 4 monos
23 août 2019, par user2216280I have a quadri audio file (one stream of 4tracks) and I would like to make 4 monos track from that stream/
ffmpeg -i TRACK-026.wav -filter_complex "channelsplit=channel_layout=4[Perche][MixHf][hf1][hf2]" -map "[Perche]" perche.wav -map "[MixHF]" MixHF.wav -map "[hf1]" hf1.wav -map "[hf2]" hf2.wav
here’s the full log :
Guessed Channel Layout for Input Stream #0.0 : 4.0
Input #0, wav, from 'TRACK-026.wav':
Metadata:
comment : sSPEED=030.000-ND
: sTAKE=026
: sUBITS=$00000000
: sSWVER=2.10.71
: sSCENE=Track
: sFILENAME=TRACK-026.WAV
: sTAPE=190822
: sCIRCLED=FALSE
: sTRK1=Perche
: sTRK2=MixHF
: sTRK4=hf1
: sTRK5=hf2
: sNOTE=
:
encoded_by : SoundDev: MixPre-10T QD031734201
originator_reference: USSDVQD0317342017190822DQR000101
date : 2019-08-22
creation_time : 13:26:54
time_reference : 0
coding_history : A=PCM,F=48000,W=24,M=multi,R=48000,T=4 Ch
:
Duration: 00:32:19.35, bitrate: 4608 kb/s
Stream #0:0: Audio: pcm_s24le ([1][0][0][0] / 0x0001), 48000 Hz, 4.0, s32 (24 bit), 4608 kb/s
[AVFilterGraph @ 000002293f28d500] No output pad can be associated to link label 'MixHf'.
Error initializing complex filters.
Invalid argument