Recherche avancée
Autres articles (94)
-
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.
MediaSPIP allows for media playback on major mobile platforms with the above (...) -
Support de tous types de médias
10 avril 2011Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)
-
Support audio et vidéo HTML5
10 avril 2011MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...)
Sur d’autres sites (7240)
-
javacv FFMPEG decode memory leak ?
25 mars 2015, par Liquan NieI’m new to JAVACV and I am using FFMPEG to play some video file as follows
My enviroument is windows 8 with jdk7 and javacv0.10.String file_path ="D:\\1.mp4";
// regist all format and codec
avformat.av_register_all();
avcodec.avcodec_register_all();
// open file
avformat.AVFormatContext avFormatCtx = avformat.avformat_alloc_context();
if (avformat.avformat_open_input(avFormatCtx, file_path, null, null) != 0)
{
System.out.println("cann't open file\r\n");
return;
}
// find stream info
if (avformat.avformat_find_stream_info(avFormatCtx, (AVDictionary)null) < 0)
{
System.out.println("can't find stream info\r\n");
return;
}
int videoIndex = -1;
for(int i=0; i< avFormatCtx.nb_streams();i++)
{
if(avFormatCtx.streams(i).codec().codec_type() == avutil.AVMEDIA_TYPE_VIDEO)
{
videoIndex = i;
}
}
// determ codec
avcodec.AVCodecContext avCodecCtx = avFormatCtx.streams(videoIndex).codec();
avcodec.AVCodec codec = avcodec.avcodec_find_decoder(avCodecCtx.codec_id());
if (codec == null)
{
System.out.println("codec not found");
return;
}
if(avcodec.avcodec_open2(avCodecCtx, codec, (AVDictionary)null) < 0)
{
System.out.println("cann't open avcodec\r\n");
}
avutil.AVFrame frame = avcodec.avcodec_alloc_frame();
avutil.AVFrame frameRGB = avcodec.avcodec_alloc_frame();
int numByte = avcodec.avpicture_get_size(avutil.AV_PIX_FMT_RGB24, avCodecCtx.width(), avCodecCtx.height());
Pointer outBuffer = avutil.av_malloc(numByte);
avcodec.avpicture_fill(new AVPicture(frameRGB), outBuffer.asByteBuffer(), avutil.AV_PIX_FMT_RGB24, avCodecCtx.width(), avCodecCtx.height());
avformat.av_dump_format(avFormatCtx, 0, file_path, 0);
System.out.println(avFormatCtx.duration());
SwsContext img_convert_ctx = swscale.sws_getContext(avCodecCtx.width(), avCodecCtx.height(), avCodecCtx.pix_fmt(), avCodecCtx.width(), avCodecCtx.height(), avutil.AV_PIX_FMT_RGB24, swscale.SWS_BICUBIC, null, null, (double[])null);
AVPacket pkt = new AVPacket();
int y_size = avCodecCtx.width()*avCodecCtx.height();
avcodec.av_new_packet(pkt, y_size);
opencv_highgui.cvNamedWindow(WINDOW_NAME);
IplImage showImage = opencv_core.cvCreateImage(opencv_core.cvSize(avCodecCtx.width(), avCodecCtx.height()), opencv_core.IPL_DEPTH_8U, 3);
// read frames loop
int frameNumbers = avformat.av_read_frame(avFormatCtx, pkt);
System.out.println("frame number is "+frameNumbers);
while (avformat.av_read_frame(avFormatCtx, pkt) >= 0)
{
//System.out.println(pkt.asByteBuffer());
if (pkt.stream_index() == videoIndex)
{
IntPointer ip = new IntPointer();
int ret = avcodec.avcodec_decode_video2(avCodecCtx, frame, ip, pkt);
if (ret < 0)
{
System.out.println("codec error\r\n");
return;
}
if (ip.get()!= 0)
{
swscale.sws_scale(img_convert_ctx, frame.data(), frame.linesize(), 0, avCodecCtx.height(), frameRGB.data(), frameRGB.linesize());
showImage.imageData(frameRGB.data(0));
showImage.widthStep(frameRGB.linesize().get(0));
opencv_highgui.cvShowImage(WINDOW_NAME, showImage);
opencv_highgui.cvWaitKey(25);
}
}
}
showImage.release();
opencv_highgui.cvDestroyWindow(WINDOW_NAME);
avutil.av_free(frameRGB);
avcodec.avcodec_close(avCodecCtx);
avformat.avformat_close_input(avFormatCtx);but i run into get this error
# A fatal error has been detected by the Java Runtime Environment:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x00000000767c35ed, pid=11884, tid=3960
#
# JRE version: 7.0_13-b20
# Java VM: Java HotSpot(TM) 64-Bit Server VM (23.7-b01 mixed mode windows-amd64 compressed oops)
# Problematic frame:
# C [avcodec-56.dll+0x4835ed] avcodec_decode_video2+0xbd
#
# Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
#
# An error report file with more information is saved as:
# E:\code\android\TestJAVACV\hs_err_pid11884.log
#
# If you would like to submit a bug report, please visit:
# http://bugreport.sun.com/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'D:\1.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
creation_time : 1970-01-01 00:00:00
encoder : Lavf53.29.100
Duration: 00:08:30.27, start: 0.000000, bitrate: 160 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 960x540 [SAR 1:1 DAR 16:9], 28 kb/s, 15 fps, 15 tbr, 15 tbn, 30 tbc (default)
Metadata:
creation_time : 1970-01-01 00:00:00
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 127 kb/s (default)
Metadata:
creation_time : 1970-01-01 00:00:00
handler_name : SoundHandlerand in the log file i found that the enden space heap in jvm has been used 98%. but I don’t know where is the issue, since the document of ffmpeg is not that enough, I feel difficult to know more about how to use it well ,any suggestions ??
Heap
PSYoungGen total 23872K, used 20250K [0x00000000e5600000, 0x00000000e70a0000, 0x0000000100000000)
eden space 20480K, 98% used [0x00000000e5600000,0x00000000e69c69f8,0x00000000e6a00000) -
What is the bitrate of my audio file based on ffmpeg output ?
21 avril 2015, par blueetherIs it the 40kb/s under
Format, or is it the 16kb/s underStream? What is the relationship between the Format and the Stream ?
The below output is for a file generated using Core Audio on an iphone, with an Audio Unit. The output format was specified by anAudioStreamBasicDescriptiondescriptorUpdated :
Output fromffprobe -v error -show_format -show_streams 123_1429602551009.051025.m4a:[STREAM]
index=0
codec_name=aac
codec_long_name=AAC (Advanced Audio Coding)
profile=LC
codec_type=audio
codec_time_base=1/8000
codec_tag_string=mp4a
codec_tag=0x6134706d
sample_fmt=fltp
sample_rate=8000
channels=1
channel_layout=mono
bits_per_sample=0
id=N/A
r_frame_rate=0/0
avg_frame_rate=0/0
time_base=1/8000
start_pts=0
start_time=0.000000
duration_ts=43008
duration=5.376000
bit_rate=16501
max_bit_rate=N/A
bits_per_raw_sample=N/A
nb_frames=42
nb_read_frames=N/A
nb_read_packets=N/A
DISPOSITION:default=1
DISPOSITION:dub=0
DISPOSITION:original=0
DISPOSITION:comment=0
DISPOSITION:lyrics=0
DISPOSITION:karaoke=0
DISPOSITION:forced=0
DISPOSITION:hearing_impaired=0
DISPOSITION:visual_impaired=0
DISPOSITION:clean_effects=0
DISPOSITION:attached_pic=0
TAG:creation_time=1970-04-16 22:36:01
TAG:language=eng
[/STREAM]
[FORMAT]
filename=123_1429602551009.051025.m4a
nb_streams=1
nb_programs=0
format_name=mov,mp4,m4a,3gp,3g2,mj2
format_long_name=QuickTime / MOV
start_time=0.000000
duration=5.376000
size=27473
bit_rate=40882
probe_score=100
TAG:major_brand=M4A
TAG:minor_version=0
TAG:compatible_brands=M4A mp42isom
TAG:creation_time=1970-04-16 22:36:01
TAG:iTunSMPB= 00000000 00000840 00000361 0000000000009C5F 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[/FORMAT] -
ffmpeg : How can I send a H.265 encoded stream to wowza ?
24 avril 2015, par FuzzI managed to encode H.265 to an output file like this :
ffmpeg -i test.m2ts -c:v libx265 -c:a copy output.mp4and I managed to stream a H.264 file to wowza like this :
ffmpeg -re -i sample.mp4 -vcodec libx264 -vprofile default -vprofile baseline -r 24 -g 48 -vb 150000 -strict experimental -acodec aac -ab 96000 -ar 48000 -ac 2 -f rtsp -muxdelay 0.1 rtsp://username:password@127.0.0.1:1935/ApplicationName/myStreamBut I just cant seem to stream a H.265 to a rtsp stream.
If I use the libx265 in the command above I get the error :
Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or heightAny hints would be greatly appreciated.
Here is the console message with -loglevel verbose
>ffmpeg -re -i sample.mp4 -vcodec libx265 -vprofile default -vprofile baseline -r 24 -g 48 -vb 150000 -strict experimental -acodec aac -ab 96000 -ar 48000 -ac 2 -f rtsp -muxdelay 0.1 rtsp://username:password@127.0.0.1:1935/ApplicationName/myStream -l
oglevel verbose
ffmpeg version N-69156-gff5b9a1c Copyright (c) 2000-2015 the FFmpeg developers
built on Jan 20 2015 00:38:00 with gcc 4.9.2 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --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-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --
enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib
libavutil 54. 17.100 / 54. 17.100
libavcodec 56. 20.100 / 56. 20.100
libavformat 56. 19.100 / 56. 19.100
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 8.100 / 5. 8.100
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 3.100 / 53. 3.100
Routing option strict to both codec and muxer layer
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'sample.mp4':
Metadata:
major_brand : qt
minor_version : 512
compatible_brands: qt
creation_time : 1970-01-01 00:00:00
encoder : Lavf52.73.0
Duration: 00:09:56.46, start: 0.000000, bitrate: 524 kb/s
Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 424x240 (432x240), 420 kb/s, 24 fps, 24 tbr, 24 tbn, 48 tbc (default)
Metadata:
creation_time : 1970-01-01 00:00:00
handler_name : DataHandler
encoder : libx264
Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 99 kb/s (default)
Metadata:
creation_time : 1970-01-01 00:00:00
handler_name : DataHandler
[graph 0 input from stream 0:0 @ 00000000050f6e60] w:424 h:240 pixfmt:yuv420p tb:1/24 fr:24/1 sar:0/1 sws_param:flags=2
[graph 1 input from stream 0:1 @ 0000000002c38700] tb:1/48000 samplefmt:fltp samplerate:48000 chlayout:0x3
[libx265 @ 0000000002c172a0] [Eval @ 000000000022aca0] Undefined constant or missing '(' in 'baseline'
[libx265 @ 0000000002c172a0] Unable to parse option value "baseline"
[libx265 @ 0000000002c172a0] Error setting option profile to value baseline.
Output #0, rtsp, to 'rtsp://username:password@127.0.0.1:1935/ApplicationName/myStream':
Metadata:
major_brand : qt
minor_version : 512
compatible_brands: qt
encoder : Lavf52.73.0
Stream #0:0(eng): Video: hevc, none, q=2-31, 128 kb/s, 24 fps (default)
Metadata:
creation_time : 1970-01-01 00:00:00
handler_name : DataHandler
encoder : Lavc56.20.100 libx265
Stream #0:1(eng): Audio: aac, 0 channels, 128 kb/s (default)
Metadata:
creation_time : 1970-01-01 00:00:00
handler_name : DataHandler
encoder : Lavc56.20.100 aac
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> hevc (libx265))
Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height
Syndiquer tout le site
