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DJ Dolores - Oslodum 2004 (includes (cc) sample of “Oslodum” by Gilberto Gil)
15 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
Autres articles (88)
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Des sites réalisés avec MediaSPIP
2 mai 2011, parCette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page. -
MediaSPIP Player : problèmes potentiels
22 février 2011, parLe lecteur ne fonctionne pas sur Internet Explorer
Sur Internet Explorer (8 et 7 au moins), le plugin utilise le lecteur Flash flowplayer pour lire vidéos et son. Si le lecteur ne semble pas fonctionner, cela peut venir de la configuration du mod_deflate d’Apache.
Si dans la configuration de ce module Apache vous avez une ligne qui ressemble à la suivante, essayez de la supprimer ou de la commenter pour voir si le lecteur fonctionne correctement : /** * GeSHi (C) 2004 - 2007 Nigel McNie, (...) -
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 (...)
Sur d’autres sites (11577)
-
Extract audio from video using autogen ffmpeg C# in Unity
5 décembre 2024, par Johan SophieHi I'm using ffmpeg autogen to extract audio from video in Unity, but when I following this code, the file write cannot write, it's 0Kb, so what's issue of this or someone have any examples for extract audio using this library, apologize for my English. This is github of library : 
https://github.com/Ruslan-B/FFmpeg.AutoGen



unsafe void TestExtractAudio()
{

 string inFile = Application.streamingAssetsPath + "/" + strFileName;
 string outFile = Application.streamingAssetsPath + "/" + strFileNameAudio;

 AVOutputFormat* outFormat = null;
 AVFormatContext* inFormatContext = null;
 AVFormatContext* outFormatContext = null;
 AVPacket packet;

 ffmpeg.av_register_all();

 inFormatContext = ffmpeg.avformat_alloc_context();
 outFormatContext = ffmpeg.avformat_alloc_context();

 if (ffmpeg.avformat_open_input(&inFormatContext, inFile, null, null) < 0)
 {
 throw new ApplicationException("Could not open input file.");
 }

 if (ffmpeg.avformat_find_stream_info(inFormatContext, null) < 0)
 {
 throw new ApplicationException("Failed to retrieve input stream info.");
 }

 ffmpeg.avformat_alloc_output_context2(&outFormatContext, null, null, outFile);
 if (outFormatContext == null)
 {
 throw new ApplicationException("Could not create output context");
 }

 outFormat = outFormatContext->oformat;

 AVStream* inStream = inFormatContext->streams[1];
 AVStream* outStream = ffmpeg.avformat_new_stream(outFormatContext, inStream->codec->codec);
 if (outStream == null)
 {
 throw new ApplicationException("Failed to allocate output stream.");
 }

 if (ffmpeg.avcodec_copy_context(outStream->codec, inStream->codec) < 0)
 {
 throw new ApplicationException("Couldn't copy input stream codec context to output stream codec context");
 }

 outFormatContext->audio_codec_id = AVCodecID.AV_CODEC_ID_MP3;

 int retcode = ffmpeg.avio_open(&outFormatContext->pb, outFile, ffmpeg.AVIO_FLAG_WRITE);
 if (retcode < 0)
 {
 throw new ApplicationException("Couldn't open output file");
 }

 int returnCode = ffmpeg.avformat_write_header(outFormatContext, null);

 if (returnCode < 0)
 {
 throw new ApplicationException("Error occurred opening output file.");
 }

 while (true)
 {
 if (ffmpeg.av_read_frame(inFormatContext, &packet) < 0)
 {
 break;
 }

 if (packet.stream_index == 1)
 {

 inStream = inFormatContext->streams[1];
 outStream = outFormatContext->streams[0];

 // TODO: Replicate log packet functionality to print out what's inside the packet.

 packet.pts = ffmpeg.av_rescale_q_rnd(packet.pts, inStream->time_base, outStream->time_base,
 AVRounding.AV_ROUND_NEAR_INF | AVRounding.AV_ROUND_PASS_MINMAX);
 packet.dts = ffmpeg.av_rescale_q_rnd(packet.dts, inStream->time_base, outStream->time_base,
 AVRounding.AV_ROUND_NEAR_INF | AVRounding.AV_ROUND_PASS_MINMAX);

 packet.duration = ffmpeg.av_rescale_q(packet.duration, inStream->time_base, outStream->time_base);

 int returncode = ffmpeg.av_interleaved_write_frame(outFormatContext, &packet);

 }

 ffmpeg.av_packet_unref(&packet);
 }

 ffmpeg.av_write_trailer(outFormatContext);


 ffmpeg.avformat_close_input(&inFormatContext);

 ffmpeg.avformat_free_context(outFormatContext);

 Console.WriteLine("Press any key to continue...");

 Console.ReadKey();
}



the value returnCode return less than 0, so someone can fix this, thanks so much for that


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Error on make VideoLibs while building CSipSimple for android
26 janvier 2016, par Alex ChengalanI have successfully build CSipSimple for android by
makecommand. After that, when I try to build video support libary by callingmake VideoLibscommand, there is an error appears.[armeabi] SharedLibrary : libpj_video_android.so
[armeabi-v7a] SharedLibrary : libpj_video_android.so
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1086: error: undefined reference to 'av_strerror'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1324: error: undefined reference to 'avcodec_close'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1325: error: undefined reference to 'av_free'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1328: error: undefined reference to 'avcodec_close'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1329: error: undefined reference to 'av_free'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1430: error: undefined reference to 'avcodec_get_frame_defaults'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1455: error: undefined reference to 'av_init_packet'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1460: error: undefined reference to 'avcodec_encode_video2'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:409: error: undefined reference to 'av_opt_set'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:427: error: undefined reference to 'av_opt_set_int'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:434: error: undefined reference to 'av_opt_set_int'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:442: error: undefined reference to 'av_opt_set'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:445: error: undefined reference to 'av_opt_set'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1116: error: undefined reference to 'avcodec_alloc_context3'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1125: error: undefined reference to 'avcodec_alloc_context3'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1185: error: undefined reference to 'avcodec_open2'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1200: error: undefined reference to 'avcodec_open2'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1222: error: undefined reference to 'avcodec_close'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1223: error: undefined reference to 'av_free'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1228: error: undefined reference to 'avcodec_close'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1229: error: undefined reference to 'av_free'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1680: error: undefined reference to 'avcodec_get_frame_defaults'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1683: error: undefined reference to 'av_init_packet'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1705: error: undefined reference to 'avcodec_decode_video2'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:629: error: undefined reference to 'avcodec_register_all'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:632: error: undefined reference to 'av_codec_next'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia/converter_libswscale.c:172: error: undefined reference to 'sws_freeContext'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia/converter_libswscale.c:152: error: undefined reference to 'sws_scale'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia/converter_libswscale.c:112: error: undefined reference to 'sws_getContext'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia/ffmpeg_util.c:113: error: undefined reference to 'av_log_get_level'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia/ffmpeg_util.c:88: error: undefined reference to 'av_log_set_level'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia/ffmpeg_util.c:89: error: undefined reference to 'av_log_set_callback'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia/ffmpeg_util.c:90: error: undefined reference to 'av_register_all'
collect2: error: ld returned 1 exit status
make[1]: *** [obj/local/armeabi/libpj_video_android.so] Error 1
make[1]: *** Waiting for unfinished jobs....
[armeabi-v7a] Install : libpjsipjni.so => ./libs/armeabi-v7a/libpjsipjni.so
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1086: error: undefined reference to 'av_strerror'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1324: error: undefined reference to 'avcodec_close'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1325: error: undefined reference to 'av_free'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1328: error: undefined reference to 'avcodec_close'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1329: error: undefined reference to 'av_free'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1430: error: undefined reference to 'avcodec_get_frame_defaults'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1455: error: undefined reference to 'av_init_packet'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1460: error: undefined reference to 'avcodec_encode_video2'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:409: error: undefined reference to 'av_opt_set'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:427: error: undefined reference to 'av_opt_set_int'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:434: error: undefined reference to 'av_opt_set_int'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:442: error: undefined reference to 'av_opt_set'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:445: error: undefined reference to 'av_opt_set'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1116: error: undefined reference to 'avcodec_alloc_context3'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1125: error: undefined reference to 'avcodec_alloc_context3'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1185: error: undefined reference to 'avcodec_open2'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1200: error: undefined reference to 'avcodec_open2'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1222: error: undefined reference to 'avcodec_close'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1223: error: undefined reference to 'av_free'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1228: error: undefined reference to 'avcodec_close'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1229: error: undefined reference to 'av_free'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1680: error: undefined reference to 'avcodec_get_frame_defaults'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1683: error: undefined reference to 'av_init_packet'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:1705: error: undefined reference to 'avcodec_decode_video2'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:629: error: undefined reference to 'avcodec_register_all'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:632: error: undefined reference to 'av_codec_next'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia-codec/ffmpeg_vid_codecs.c:632: error: undefined reference to 'av_codec_next'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia/converter_libswscale.c:172: error: undefined reference to 'sws_freeContext'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia/converter_libswscale.c:152: error: undefined reference to 'sws_scale'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia/converter_libswscale.c:112: error: undefined reference to 'sws_getContext'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia/ffmpeg_util.c:113: error: undefined reference to 'av_log_get_level'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia/ffmpeg_util.c:88: error: undefined reference to 'av_log_set_level'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia/ffmpeg_util.c:89: error: undefined reference to 'av_log_set_callback'
jni/pjsip/android_toolchain/pjmedia/../../sources/pjmedia/src/pjmedia/ffmpeg_util.c:90: error: undefined reference to 'av_register_all'
collect2: error: ld returned 1 exit status
make[1]: *** [obj/local/armeabi-v7a/libpj_video_android.so] Error 1
make[1]: Leaving directory `/home/alexchengalan/android/files/CSipSimple-trunk/CSipSimple'
make: *** [VideoLibs] Error 2It would be great if anyone can help me out of this problem.
-
Dynamically created QImage frames to ffmpeg stdin using QThread
11 mai 2021, par musicamanteI am trying to create video files with ffmpeg using frames dynamically created on a separate thread.


While I can create those frames and store them on disk/memory, I'd like to avoid that passage since the amount/size of the frames can be high and many "jobs" could be created with different format or options. But, also importantly, I'd like to better understand the logic behind this, as I admit I've not a very deep knowledge on how thread/processing actually works.


Right now I'm trying to create the QProcess in the QThread object, and then run the image creation thread as soon as the process is started, but it doesn't seem to work : no file is created, and I don't even get any output from standard error (but I know I should, since I can get it if I don't use the thread).


Unfortunately, due to my little knowledge on how QProcess deals with threads and piping (and, obviously, all possible ffmpeg options), I really don't understand how can achieve this.


Besides obviously getting the output file created, the expected result is to be able to launch the encoding (and possibly queue more encodings in the meantime) while keeping the UI responding and get notifications of the current processing state.


import re
from PyQt5 import QtCore, QtGui, QtWidgets

logRegExp = r'(?:(n:\s+)(?P\d+)\s).*(?:(pts_time:\s*)(?P<time>\d+.\d*))'

class Encoder(QtCore.QThread):
 completed = QtCore.pyqtSignal()
 frameDone = QtCore.pyqtSignal(object)
 def __init__(self, width=1280, height=720, frameCount=100):
 super().__init__()
 self.width = width
 self.height = height
 self.frameCount = frameCount

 def start(self):
 self.currentLog = ''
 self.currentData = bytes()
 self.process = QtCore.QProcess()
 self.process.setReadChannel(self.process.StandardError)
 self.process.finished.connect(self.completed)
 self.process.readyReadStandardError.connect(self.stderr)
 self.process.started.connect(super().start)
 self.process.start('ffmpeg', [
 '-y', 
 '-f', 'png_pipe', 
 '-i', '-', 
 '-c:v', 'libx264', 
 '-b:v', '800k', 
 '-an', 
 '-vf', 'showinfo',
 '/tmp/test.h264', 
 ])

 def stderr(self):
 self.currentLog += str(self.process.readAllStandardError(), 'utf-8')
 *lines, self.currentLog = self.currentLog.split('\n')
 for line in lines:
 print('STDERR: {}'.format(line))
 match = re.search(logRegExp, line)
 if match:
 data = match.groupdict()
 self.frameDone.emit(int(data['frame']))

 def run(self):
 font = QtGui.QFont()
 font.setPointSize(80)
 rect = QtCore.QRect(0, 0, self.width, self.height)
 for frame in range(1, self.frameCount + 1):
 img = QtGui.QImage(QtCore.QSize(self.width, self.height), QtGui.QImage.Format_ARGB32)
 img.fill(QtCore.Qt.white)
 qp = QtGui.QPainter(img)
 qp.setFont(font)
 qp.setPen(QtCore.Qt.black)
 qp.drawText(rect, QtCore.Qt.AlignCenter, 'Frame {}'.format(frame))
 qp.end()
 img.save(self.process, 'PNG')
 print('frame creation complete')


class Test(QtWidgets.QWidget):
 def __init__(self):
 super().__init__()
 layout = QtWidgets.QVBoxLayout(self)
 self.startButton = QtWidgets.QPushButton('Start')
 layout.addWidget(self.startButton)

 self.frameLabel = QtWidgets.QLabel()
 layout.addWidget(self.frameLabel)

 self.process = Encoder()
 self.process.completed.connect(lambda: self.startButton.setEnabled(True))
 self.process.frameDone.connect(self.frameLabel.setNum)
 self.startButton.clicked.connect(self.create)

 def create(self):
 self.startButton.setEnabled(False)
 self.process.start()


import sys
app = QtWidgets.QApplication(sys.argv)
test = Test()
test.show()
sys.exit(app.exec_())
</time>

If I add the following lines at the end of
run(), then the file is actually created and I get the stderr output, but I can see that it's processed after the completion of the for cycle, which obviously is not the expected result :

self.process.closeWriteChannel()
 self.process.waitForFinished()
 self.process.terminate()


Bonus : I'm on Linux, I don't know if it works differently on Windows (and I suppose it would work similarly on MacOS), but in any case I'd like to know if there are differences and how to possibly deal with them.


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