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Médias (1)
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Bug de détection d’ogg
22 mars 2013, par
Mis à jour : Avril 2013
Langue : français
Type : Video
Autres articles (50)
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Websites made with MediaSPIP
2 mai 2011, parThis page lists some websites based on MediaSPIP.
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Creating farms of unique websites
13 avril 2011, parMediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...) -
Other interesting software
13 avril 2011, parWe don’t claim to be the only ones doing what we do ... and especially not to assert claims to be the best either ... What we do, we just try to do it well and getting better ...
The following list represents softwares that tend to be more or less as MediaSPIP or that MediaSPIP tries more or less to do the same, whatever ...
We don’t know them, we didn’t try them, but you can take a peek.
Videopress
Website : http://videopress.com/
License : GNU/GPL v2
Source code : (...)
Sur d’autres sites (7874)
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JavaCV/FFmpeg causes crash only on Lollipop
13 novembre 2015, par WeirdHatI get reports of this crash from users of my app on Galaxy Note devices running Android Lollipop (might happen on other devices but the majority of my users have Galaxy Note because it’s a drawing app). Below is the relevant code from my ASyncTask which exports a series of images (plus audio) to a video file using JavaCV/FFmpeg, and the stack trace from the reported crash. It works fine on my Note 8.0 running KitKat (there’s no Lollipop update available for that device), and works fine in Lollipop on the emulator, so I’m having a hard time tracking down the cause and don’t know what to do.
@Override
protected String doInBackground(final File... params) {
FFmpegFrameRecorder recorder = new FFmpegFrameRecorder(params[0],canvas_width,canvas_height, 0);
FrameGrabber audiograbber = null;
if(audio!=null) audiograbber = new FFmpegFrameGrabber(audio);
Frame audioframe;
Frame image;
AndroidFrameConverter converter = new AndroidFrameConverter();
try {
recorder.setVideoCodec(avcodec.AV_CODEC_ID_H264);
recorder.setFrameRate(framerate);
recorder.setPixelFormat(0);
if(audio!=null) {
audiograbber.setFrameRate(framerate);
audiograbber.start();
recorder.setAudioChannels(audiograbber.getAudioChannels());
recorder.setSampleRate(audiograbber.getSampleRate());
}
recorder.start();
Bitmap drawframe = createBitmap(canvas_width, canvas_height, Bitmap.Config.ARGB_8888);
Canvas c = new Canvas(drawframe);
Paint p = new Paint();
for(int frame=0; frame/code to draw image
image = converter.convert(drawframe);
recorder.record(image);
}
if(isCancelled()) {
bgbitmap.recycle();
drawframe.recycle();
return "Cancelled";
}
if(audio!=null) {
while((audioframe = audiograbber.grabFrame()) != null) {
recorder.record(audioframe);
}
}
recorder.stop();
bgbitmap.recycle();
drawframe.recycle();
if(audio!=null) audiograbber.stop();
return "Saved "+params[0];
} catch (Exception e) {
e.printStackTrace();
}
return "Failed";
}-
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
Build fingerprint: 'samsung/treltexx/trelte:5.1.1/LMY47X/N910CXXU1COH4:user/release-keys'
Revision: '21'
ABI: 'arm'
pid: 12039, tid: 12053, name: GCDaemon >>> com.weirdhat.roughanimator <<<
signal 6 (SIGABRT), code -6 (SI_TKILL), fault addr --------
Abort message: 'sart/runtime/gc/collector/mark_sweep.cc:381] Can't mark invalid object'
r0 00000000 r1 00002f15 r2 00000006 r3 00000000
r4 b366bdb8 r5 00000006 r6 00000002 r7 0000010c
r8 00000001 r9 b446f550 sl b4429000 fp 9a975c60
ip 00002f15 sp b366b008 lr b6db9cb9 pc b6ddd3ac cpsr 60070010
backtrace:
#00 pc 0003b3ac /system/lib/libc.so (tgkill+12)
#01 pc 00017cb5 /system/lib/libc.so (pthread_kill+52)
#02 pc 000188c7 /system/lib/libc.so (raise+10)
#03 pc 00015165 /system/lib/libc.so (__libc_android_abort+36)
#04 pc 00012fac /system/lib/libc.so (abort+4)
#05 pc 00242f17 /system/lib/libart.so (art::Runtime::Abort()+170)
#06 pc 000ad991 /system/lib/libart.so (art::LogMessage::~LogMessage()+1360)
#07 pc 0013ec53 /system/lib/libart.so (bool art::gc::accounting::HeapBitmap::AtomicTestAndSet(art::mirror::Object const*, art::gc::collector::MarkSweepMarkObjectSlowPath const&)+422)
#08 pc 0013ed27 /system/lib/libart.so (art::gc::collector::MarkSweep::MarkObjectParallel(art::mirror::Object const*)+142)
#09 pc 0013ff23 /system/lib/libart.so (art::gc::collector::MarkSweep::MarkRootParallelCallback(art::mirror::Object**, void*, art::RootInfo const&)+26)
#10 pc 0025893d /system/lib/libart.so (art::ReferenceMapVisitor::VisitQuickFrame()+1024)
#11 pc 00258cad /system/lib/libart.so (art::ReferenceMapVisitor::VisitFrame()+224)
#12 pc 0024c8e9 /system/lib/libart.so (art::StackVisitor::WalkStack(bool)+276)
#13 pc 0024e617 /system/lib/libart.so (art::Thread::VisitRoots(void (*)(art::mirror::Object**, void*, art::RootInfo const&), void*)+994)
#14 pc 0013ef9f /system/lib/libart.so (art::gc::collector::CheckpointMarkThreadRoots::Run(art::Thread*)+126)
#15 pc 0025b44d /system/lib/libart.so (art::ThreadList::RunCheckpoint(art::Closure*)+296)
#16 pc 0013dc0d /system/lib/libart.so (art::gc::collector::MarkSweep::MarkRootsCheckpoint(art::Thread*, bool)+96)
#17 pc 0014165d /system/lib/libart.so (art::gc::collector::MarkSweep::PreCleanCards()+172)
#18 pc 001417d3 /system/lib/libart.so (art::gc::collector::MarkSweep::MarkingPhase()+126)
#19 pc 001418b9 /system/lib/libart.so (art::gc::collector::MarkSweep::RunPhases()+176)
#20 pc 00138527 /system/lib/libart.so (art::gc::collector::GarbageCollector::Run(art::gc::GcCause, bool)+246)
#21 pc 0015865b /system/lib/libart.so (art::gc::Heap::CollectGarbageInternal(art::gc::collector::GcType, art::gc::GcCause, bool)+1426)
#22 pc 00159af5 /system/lib/libart.so (art::gc::Heap::ConcurrentGC(art::Thread*)+56)
#23 pc 000003ef /system/framework/arm/boot.oat -
FFMPEG conversion error from MKV to MP4 using libfdk_aac codec
23 août 2014, par Charlie BrownThe purpose of doing this is because my "Smart" samsung TV doesn’t play MKV files.
This thread mentions that there is no need for video conversion, just changing the container might suffice. After reading multiple threads on how to change the container of MKV to MP4, I downloaded and compiled the FFMPEG with libfdk_aac support from here. I tried converting a sample MKV file using this command :
ffmpeg -i "C:\VideoTest\Sample1.mkv" -c:v copy -c:a libfdk_aac -b:a 384k "C:\VideoTest\Sample2.mp4"but getting the following errors (copied from command prompt) :
[hevc @ 0000000000308ae0] Could not find ref with POC 113
[hevc @ 0000000000308ae0] Could not find ref with POC 111
[hevc @ 0000000000308ae0] Could not find ref with POC 109
[hevc @ 0000000000308ae0] Could not find ref with POC 107
Input #0, matroska,webm, from 'C:\VideoTest\Sample-1.mk
v':
Metadata:
encoder : libebml v1.3.0 + libmatroska v1.4.1
creation_time : 2014-07-16 08:54:02
Duration: 00:00:58.68, start: 0.042000, bitrate: 3520 kb/s
Chapter #0.0: start 0.000000, end 58.717000
Metadata:
title : Chapter 4
Stream #0:0: Video: hevc (Main), yuv420p(tv), 1920x816, SAR 1:1 DAR 40:17, 2
4 fps, 24 tbr, 1k tbn, 1k tbc (default)
Metadata:
_STATISTICS_WRITING_APP: mkvmerge v7.0.0 ('Where We Going') 64bit built on
Jun 9 2014 15:16:27
_STATISTICS_WRITING_APP-eng: mkvmerge v7.0.0 ('Where We Going') 64bit buil
t on Jun 9 2014 15:16:27
_STATISTICS_WRITING_DATE_UTC: 2014-07-16 08:54:02
_STATISTICS_WRITING_DATE_UTC-eng: 2014-07-16 08:54:02
_STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
_STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
BPS : 2733260
BPS-eng : 2733260
DURATION : 00:00:58.667000000
DURATION-eng : 00:00:58.667000000
NUMBER_OF_FRAMES: 1408
NUMBER_OF_FRAMES-eng: 1408
NUMBER_OF_BYTES : 20044023
NUMBER_OF_BYTES-eng: 20044023
Stream #0:1: Audio: dts (DTS), 48000 Hz, 5.1(side), fltp, 768 kb/s (default)
Metadata:
_STATISTICS_WRITING_APP: mkvmerge v7.0.0 ('Where We Going') 64bit built on
Jun 9 2014 15:16:27
_STATISTICS_WRITING_APP-eng: mkvmerge v7.0.0 ('Where We Going') 64bit buil
t on Jun 9 2014 15:16:27
_STATISTICS_WRITING_DATE_UTC: 2014-07-16 08:54:02
_STATISTICS_WRITING_DATE_UTC-eng: 2014-07-16 08:54:02
_STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
_STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
BPS : 767986
BPS-eng : 767986
DURATION : 00:00:58.625000000
DURATION-eng : 00:00:58.625000000
NUMBER_OF_FRAMES: 5496
NUMBER_OF_FRAMES-eng: 5496
NUMBER_OF_BYTES : 5627904
NUMBER_OF_BYTES-eng: 5627904
Stream #0:2(eng): Subtitle: hdmv_pgs_subtitle, 1920x1080 (default)
Metadata:
_STATISTICS_WRITING_APP: mkvmerge v7.0.0 ('Where We Going') 64bit built on
Jun 9 2014 15:16:27
_STATISTICS_WRITING_APP-eng: mkvmerge v7.0.0 ('Where We Going') 64bit buil
t on Jun 9 2014 15:16:27
_STATISTICS_WRITING_DATE_UTC: 2014-07-16 08:54:02
_STATISTICS_WRITING_DATE_UTC-eng: 2014-07-16 08:54:02
_STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
_STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
BPS : 17485
BPS-eng : 17485
DURATION : 00:00:56.750000000
DURATION-eng : 00:00:56.750000000
NUMBER_OF_FRAMES: 40
NUMBER_OF_FRAMES-eng: 40
NUMBER_OF_BYTES : 124036
NUMBER_OF_BYTES-eng: 124036
Output #0, mp4, to 'C:\VideoTest\Sample.mp4':
Metadata:
encoder : Lavf56.1.100
Chapter #0.0: start 0.000000, end 58.675000
Metadata:
title : Chapter 4
Stream #0:0: Video: hevc ([35][0][0][0] / 0x0023), yuv420p, 1920x816 [SAR 1:
1 DAR 40:17], q=2-31, 24 fps, 16k tbn, 1k tbc (default)
Metadata:
_STATISTICS_WRITING_APP: mkvmerge v7.0.0 ('Where We Going') 64bit built on
Jun 9 2014 15:16:27
_STATISTICS_WRITING_APP-eng: mkvmerge v7.0.0 ('Where We Going') 64bit buil
t on Jun 9 2014 15:16:27
_STATISTICS_WRITING_DATE_UTC: 2014-07-16 08:54:02
_STATISTICS_WRITING_DATE_UTC-eng: 2014-07-16 08:54:02
_STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
_STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
BPS : 2733260
BPS-eng : 2733260
DURATION : 00:00:58.667000000
DURATION-eng : 00:00:58.667000000
NUMBER_OF_FRAMES: 1408
NUMBER_OF_FRAMES-eng: 1408
NUMBER_OF_BYTES : 20044023
NUMBER_OF_BYTES-eng: 20044023
Stream #0:1: Audio: aac (libfdk_aac) ([64][0][0][0] / 0x0040), 48000 Hz, 5.1
, s16, 128 kb/s (default)
Metadata:
_STATISTICS_WRITING_APP: mkvmerge v7.0.0 ('Where We Going') 64bit built on
Jun 9 2014 15:16:27
_STATISTICS_WRITING_APP-eng: mkvmerge v7.0.0 ('Where We Going') 64bit buil
t on Jun 9 2014 15:16:27
_STATISTICS_WRITING_DATE_UTC: 2014-07-16 08:54:02
_STATISTICS_WRITING_DATE_UTC-eng: 2014-07-16 08:54:02
_STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
_STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
BPS : 767986
BPS-eng : 767986
DURATION : 00:00:58.625000000
DURATION-eng : 00:00:58.625000000
NUMBER_OF_FRAMES: 5496
NUMBER_OF_FRAMES-eng: 5496
NUMBER_OF_BYTES : 5627904
NUMBER_OF_BYTES-eng: 5627904
encoder : Lavc56.0.101 libfdk_aac
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (dts (dca) -> aac (libfdk_aac))
Press [q] to stop, [?] for help
[mp4 @ 0000000003be0500] Invalid DTS: 656 PTS: -672 in output stream 0:0
av_interleaved_write_frame(): Invalid argument
[libfdk_aac @ 00000000042fa640] Trying to remove 1024 samples, but the queue is
empty
[mp4 @ 0000000003be0500] Encoder did not produce proper pts, making some up.
[libfdk_aac @ 00000000042fa640] Trying to remove 1024 samples, but the queue is
empty
frame= 2 fps=0.0 q=-1.0 Lsize= 96kB time=00:00:00.04 bitrate=18415.0kbit
s/s
video:95kB audio:1kB subtitle:0kB other streams:0kB global headers:0kB muxing ov
erhead: 0.570364%
Conversion failed!Also tried using this command :
ffmpeg -i input.wav -c:a libfdk_aac -b:a 128k output.mp4But this screws up the video quality and I start seeing some bad pixelated patches during the playback.
Any help would be appreciated.
Just an FYI : I got this far by reading blogs and posts. I have 0 knowledge about video conversion.
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H264 streamed video stutter and freeze with MediaCodec, Android 4.1.2
5 mars 2015, par WajihI have been trying my heart out to remove the stutter from an android RTSP client.
Here is my setup- FFMPEG server streams a live video on Win7. The video is 1200x900 in size. The video streamed is in H264 format.
- I receive the video packets on android (4.1.2) clinet under JNI which pushes the packet to java - Device is a Samsung Tab4
- Packets are decoded using MediaCodec. Once call from JNI to push the packets into MediaCodec, another thread in Java tries to de-queue the data and display them to a SurfaceView (its a GLSurfaceView)
Despite my efforts of using queue to buffer the packets, changing wait times to 0,-1, 1000000, i am unable to get a clean streamed video. I understand that there is some packet loss (1% to 10%), but I am getting a broken video, with stutter (some call it even jitter). Green patches, pink screens, gray slices. You name it, it is there, the problem seems to be exaggerated when there is a fast movement in the video.
At the moment I am not sure where the problem lies, I tried a windows version of the client (with ffmpeg decoding) and it works smoothly despite the packet loss.What am I doing wrong ? Any guidance is appreciated.
Below is the client end code for Android and the server end FFMPEG settings I read from a config file.// Function called from JNI
public int decodeVideo(byte[] data, int size, long presentationTimeUs, boolean rtpMarker, int flag)
{
if(vdecoder == null)
return -1;
if(currVInbufIdx == -1) {
vdecoderInbufIdx = vdecoder.dequeueInputBuffer(1000000); //1000000/*1s*/
if(vdecoderInbufIdx < 0) {
Log.d("log","decodeVideo@1: frame dropped");
vdecoderRet = -1;
return vdecoderRet;
}
currVInbufIdx = vdecoderInbufIdx;
currVPts = presentationTimeUs;
currVFlag = flag;
inputVBuffers[currVInbufIdx].clear();
}
vdecoderPos = inputVBuffers[currVInbufIdx].position();
vdecoderRemaining = inputVBuffers[currVInbufIdx].remaining();
if(flag==currVFlag && vdecoderRemaining >= size && currVPts == presentationTimeUs
&& rtpMarker == false
/*&&(pos < vbufferLevel || vbufferLevel<=0)*/)
{
/* Queue without decoding */
inputVBuffers[currVInbufIdx].put(data, 0,size);
}
else
{
if(flag==currVFlag && vdecoderRemaining >= size && currVPts == presentationTimeUs
&& rtpMarker)
{
inputVBuffers[currVInbufIdx].put(data, 0, size);
queued = true;
}
Log.d("log", "decodeVideo: submit,"
+ " pts=" + Long.toString(currVPts)
+ " position="+inputVBuffers[currVInbufIdx].position()
+ " capacity="+inputVBuffers[currVInbufIdx].capacity()
+ " VBIndex="+currVInbufIdx
);
vdecoder.queueInputBuffer(currVInbufIdx, 0, inputVBuffers[currVInbufIdx].position(), currVPts, currVFlag);
//
vdecoderInbufIdx = vdecoder.dequeueInputBuffer(1000000);//1000000/*1s*/
if(vdecoderInbufIdx >= 0)
{
currVInbufIdx = vdecoderInbufIdx;
currVPts = presentationTimeUs;
currVFlag = flag;
inputVBuffers[currVInbufIdx].clear();
//if(queued == false)
{
inputVBuffers[vdecoderInbufIdx].put(data, 0, size);
}
}
else
{
currVInbufIdx = -1;
currVPts = -1;
vdecoderRet = -1;
Log.d("log","decodeVideo@2: frame dropped");
}
}
return vdecoderRet;
}And here we have the thread that calls for a render
// Function at android. Called by a separate thread.
private void videoRendererThreadProc() {
if(bufinfo == null)
bufinfo = new MediaCodec.BufferInfo();
videoRendered = false;
Log.d("log", "videoRenderer started.");
while(!Thread.interrupted() && !quitVideoRenderer)
{
Log.d("log", "videoRendererThreadProc");
outbufIdx = vdecoder.dequeueOutputBuffer(bufinfo,1000000);//500000
switch (outbufIdx)
{
case MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED:
Log.d("log", "decodeVideo: output buffers changed.");
// outputBuffers = vdecoder.getOutputBuffers();
break;
case MediaCodec.INFO_OUTPUT_FORMAT_CHANGED:
Log.d("log", "decodeVideo: format changed - " + vdecoder.getOutputFormat());
break;
case MediaCodec.INFO_TRY_AGAIN_LATER:
// Log.d("log", "decodeVideo: try again later.");
break;
default:
// decoded or rendered
videoRendered = true;
vdecoder.releaseOutputBuffer(outbufIdx, true);
//Log.d("log", "decodeVideo: Rendering...!!!.");
}
}
// flush decoder
//vdecoder.queueInputBuffer(0, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
outbufIdx = vdecoder.dequeueOutputBuffer(bufinfo, 1000000);//10000
if(outbufIdx >= 0)
{
vdecoder.releaseOutputBuffer(outbufIdx, true);
}
bufinfo = null;
videoRendered = false;
//
Log.d("log", "videoRenderer terminated.");
}And the ffmpeg setting at server at as follows.
[slices] = 4 # --slices
[threads] = 4 # --threads
[profile] = high # --profile main|baseline
[preset] = faster # --preset faster|ultrafast
[tune] = zerolatency # --tune
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