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Rennes Emotion Map 2010-11
19 octobre 2011, par
Mis à jour : Juillet 2013
Langue : français
Type : Texte
Autres articles (94)
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Personnaliser en ajoutant son logo, sa bannière ou son image de fond
5 septembre 2013, parCertains thèmes prennent en compte trois éléments de personnalisation : l’ajout d’un logo ; l’ajout d’une bannière l’ajout d’une image de fond ;
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Ecrire une actualité
21 juin 2013, parPrésentez les changements dans votre MédiaSPIP ou les actualités de vos projets sur votre MédiaSPIP grâce à la rubrique actualités.
Dans le thème par défaut spipeo de MédiaSPIP, les actualités sont affichées en bas de la page principale sous les éditoriaux.
Vous pouvez personnaliser le formulaire de création d’une actualité.
Formulaire de création d’une actualité Dans le cas d’un document de type actualité, les champs proposés par défaut sont : Date de publication ( personnaliser la date de publication ) (...) -
Publier sur MédiaSpip
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Sur d’autres sites (13612)
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Construct ffmpeg command to do picture-in-picture for part of a video
20 novembre 2015, par Arthur A. GlecklerI run a programming hobbyist users’ group, and I’ve started to video-record the talks given each time we meet. I’m trying to construct an ffmpeg command to take two video input streams, one a screen capture and the other of a speaker, and combine them into one video with picture-in-picture, taking the audio from the speaker video. I have basic picture-in-picture working in a simple ffmpeg command, but I want to be able to specify that the beginning and end of the video show just the speaker, while the middle is picture-in-picture with the speaker in the upper right-hand corner.
Here’s what I have so far :
ffmpeg \
-ss 22 \
-i "capture.mp4" \
-ss 32 \
-i "speaker.mov" \
-filter_complex "[1] split=3[s1][s2][s3]; [s1] trim=0:10, scale=1920x1080 [prefix]; [s2] trim=10:, scale=iw/5:ih/5 [pip]; [s3] trim=0:0, scale=1920x1080 [suffix]; [0] copy [c]; [c][pip] overlay=main_w-overlay_w:0 [body]; [prefix][body][suffix] concat=n=3 [out]" \
-map "[out]" \
-profile:v baseline \
-level 3.0 \
-b:v 440k \
-vcodec libx264 \
-acodec copy \
-y \
ffmpeg-test.movRight now, there are two problems :
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no sound appears in the output
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in the picture-in-picture section, the speaker’s motion isn’t smooth ; the video jumps as if he had been sampled every half second even though the speaker video is at 29.97 fps. (Perhaps the problem is that it’s matching the capture frame rate, which is 5 fps.)
I’m trying to do this in just one command in order to make the processing as quick as possible.
Is there any way to accomplish this with ffmpeg ? It would really help me to be able to automate this process as much as possible.
Thanks.
EDIT : Per LordNeckbeard’s request, here is the full console output :
ffmpeg version 2.8.1 Copyright (c) 2000-2015 the FFmpeg developers
built with Apple LLVM version 7.0.0 (clang-700.0.72)
configuration: --prefix=/usr/local/Cellar/ffmpeg/2.8.1_1 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-opencl --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid --enable-vda
libavutil 54. 31.100 / 54. 31.100
libavcodec 56. 60.100 / 56. 60.100
libavformat 56. 40.101 / 56. 40.101
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 40.101 / 5. 40.101
libavresample 2. 1. 0 / 2. 1. 0
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 2.101 / 1. 2.101
libpostproc 53. 3.100 / 53. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'capture.mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: mp42isomavc1
creation_time : 2015-11-09 17:29:41
Duration: 01:42:51.90, start: 0.000000, bitrate: 115 kb/s
Stream #0:0(eng): Audio: aac (LC) (mp4a / 0x6134706D), 16000 Hz, mono, fltp, 4 kb/s (default)
Metadata:
handler_name : AAC stream handler
Stream #0:1(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 109 kb/s, 5 fps, 5 tbr, 90k tbn, 180k tbc (default)
Metadata:
handler_name : Citrix h264 stream handler
encoder : AVC Coding
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'speaker.mov':
Metadata:
major_brand : qt
minor_version : 537199360
compatible_brands: qt
creation_time : 2015-11-09 21:17:52
Duration: 00:59:57.60, start: 0.000000, bitrate: 7264 kb/s
Stream #1:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p(bt709), 1440x1080 [SAR 4:3 DAR 16:9], 5724 kb/s, 29.97 fps, 29.97 tbr, 2997 tbn, 59.94 tbc (default)
Metadata:
creation_time : 2015-11-09 21:17:52
handler_name : Apple Alias Data Handler
encoder : AVCHD 1080i60
timecode : 00:00:00;00
Stream #1:1(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, stereo, s16, 1536 kb/s (default)
Metadata:
creation_time : 2015-11-09 21:17:52
handler_name : Apple Alias Data Handler
Stream #1:2(eng): Data: none (tmcd / 0x64636D74)
Metadata:
creation_time : 2015-11-09 21:17:52
handler_name : Apple Alias Data Handler
timecode : 00:00:00;00
[libx264 @ 0x7f99a980de00] using SAR=1/1
[libx264 @ 0x7f99a980de00] frame MB size (120x68) > level limit (1620)
[libx264 @ 0x7f99a980de00] DPB size (1 frames, 8160 mbs) > level limit (0 frames, 8100 mbs)
[libx264 @ 0x7f99a980de00] MB rate (244555) > level limit (40500)
[libx264 @ 0x7f99a980de00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
[libx264 @ 0x7f99a980de00] profile Constrained Baseline, level 3.0
[libx264 @ 0x7f99a980de00] 264 - core 148 r2601 a0cd7d3 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=abr mbtree=1 bitrate=440 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mov, to 'cli-ffmpeg-test.mov':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: mp42isomavc1
encoder : Lavf56.40.101
Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 440 kb/s, 29.97 fps, 11988 tbn, 29.97 tbc (default)
Metadata:
encoder : Lavc56.60.100 libx264
Stream mapping:
Stream #0:1 (h264) -> copy
Stream #1:0 (h264) -> split
concat -> Stream #0:0 (libx264)
Press [q] to stop, [?] for help
frame=184483 fps=117 q=-1.0 Lsize= 256071kB time=01:42:35.58 bitrate= 340.8kbits/s dup=153456 drop=0
video:255343kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.285118%
[libx264 @ 0x7f99a980de00] frame I:779 Avg QP: 5.70 size:181781
[libx264 @ 0x7f99a980de00] frame P:183704 Avg QP:10.00 size: 652
[libx264 @ 0x7f99a980de00] mb I I16..4: 77.8% 0.0% 22.2%
[libx264 @ 0x7f99a980de00] mb P I16..4: 0.1% 0.0% 0.0% P16..4: 0.4% 0.1% 0.1% 0.0% 0.0% skip:99.3%
[libx264 @ 0x7f99a980de00] final ratefactor: 13.35
[libx264 @ 0x7f99a980de00] coded y,uvDC,uvAC intra: 21.1% 28.5% 19.4% inter: 0.2% 0.2% 0.1%
[libx264 @ 0x7f99a980de00] i16 v,h,dc,p: 74% 23% 1% 2%
[libx264 @ 0x7f99a980de00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 32% 26% 15% 4% 4% 5% 4% 4% 5%
[libx264 @ 0x7f99a980de00] i8c dc,h,v,p: 68% 20% 10% 1%
[libx264 @ 0x7f99a980de00] kb/s:339.82Thanks again.
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Xuggler decode H264 packets
18 novembre 2015, par Roy BeanI’m making a test with xuggler, and I’m observing a behavior that I don’t understand.
So I have a H264 frame, stored in a file and I want to decode it.
Bassically I need of the IVideoPicture to then get a buffred image.for the same same packet I need of 10 tries until it retrieved that the IVideoPicture is complete.
this is what ffmpeg does when reads the frame :
Input #0, h264, from 'sample1.jpg':
Duration: N/A, bitrate: N/A
Stream #0:0: Video: h264 (Baseline), yuv420p, 352x288, 25 tbr, 1200k tbn, 50 tbcCan someone of xuggler or ffmpeg knowledge explain what is happen ?
My code bellow :
IContainer container = IContainer.make();
RandomAccessFile aFile = new RandomAccessFile("c://sample1Frame/sample1.jpg","r");
IContainerFormat format = IContainerFormat.make();
format.setInputFormat("h264");
container.open(aFile, IContainer.Type.READ, null);
int numStreams = container.getNumStreams();
IStreamCoder videoCoder = null;
for(int i = 0; i < numStreams; i++)
{
IStream stream = container.getStream(i);
// Get the pre-configured decoder that can decode this stream;
IStreamCoder coder = stream.getStreamCoder();
if(coder.getCodecType() == ICodec.Type.CODEC_TYPE_VIDEO)
{
System.out.println("coder");
}
videoCoder = coder;
}
// The timebase here is used as the camera frame rate
videoCoder.setTimeBase(IRational.make(25,1));
// we need to tell the driver what video with and height to use
videoCoder.setWidth(352);
videoCoder.setHeight(288);
if(videoCoder.open(null , null) < 0){
System.err.println("Could not open video decoder for input container");
return;
}
// videoCoder.setFlag(IStreamCoder.Flags.FLAG_QSCALE,true);
// videoCoder.setFlag(IStreamCoder.Flags.FLAG2_FAST,true);
IPacket packet = IPacket.make();
// long firstTimestampInStream = Global.NO_PTS;
// long systemClockStartTime = 0;
int complete = 1;
while(container.readNextPacket(packet) >= 0){
int trys= 1;
System.out.println("PCK = ");
while(true)
{
trys++;
System.out.println("trys = " + trys);
System.out.println("packet " + packet.getSize());
IVideoPicture picture = IVideoPicture.make(videoCoder.getPixelType(), videoCoder.getWidth(), videoCoder.getHeight());
//TODO
int offset = 0;
while(offset < packet.getSize())
{
/*
* Now, we decode the video, checking for any errors.
*
*/
System.out.println("packet getTimeBase " + packet.getTimeBase());
System.out.println("vc getTimeBase " + videoCoder.getTimeBase());
System.out.println("vc getCodecID " + videoCoder.getCodecID().toString());
int bytOffset = videoCoder.decodeVideo(picture, packet, offset);
Logger.getLogger(VideoSamsung.class.getName()).log(Level.SEVERE,"bytOffset = " + bytOffset);
if(bytOffset < 0){
// videoCoder.close();
// // picture.setComplete(true, com.xuggle.xuggler.IPixelFormat.Type.YUV420P, 352, 288, packet.getPts());
// System.err.println("picture.isComplete()"+picture.isComplete());
// BufferedImage sdf = Utils.videoPictureToImage(picture);
// File outputfile = new File("c://sdf/image.jpg");
// ImageIO.write(sdf, "jpg", outputfile);
Logger.getLogger(VideoSamsung.class.getName()).log(Level.SEVERE,"BUMMMMMM!!!!!!!!!!!!!!!!!!!");
break;
}else{
//System.out.println(DatatypeConverter.printBase64Binary(videoCoder.getExtraData().getByteArray(0, videoCoder.getExtraData().getSize())));
}
offset += bytOffset;
System.err.println("picture.isComplete()"+picture.isComplete());
/*
* Some decoders will consume data in a packet, but will not be able to construct
* a full video picture yet. Therefore you should always check if you
* got a complete picture from the decoder
*/
}//end while(offset < packet.getSize())
if (picture.isComplete())
{
System.out.println("isComplete");
IVideoPicture newPic = picture;
BufferedImage sdf = Utils.videoPictureToImage(picture);
File outputfile = new File("c://sdf/image_"+complete+".jpg");
ImageIO.write(sdf, "jpg", outputfile);
complete++;
System.out.println("trys = " + trys);
break;
// System.exit(0);
}else{
System.out.println("Picture is not Complete");
}
if(trys > 20){
System.out.println("FAIL!!!!!!!!!! trys = " + trys);
break;
}
}
}
/*
* Technically since we're exiting anyway, these will be cleaned up by
* the garbage collector... but because we're nice people and want
* to be invited places for Christmas, we're going to show how to clean up.
*/
if (videoCoder != null)
{
videoCoder.close();
videoCoder = null;
}
if (container !=null)
{
container.close();
container = null;
}the console output :
PCK =
trys = 2
packet 1748
packet getTimeBase 1/1200000
vc getTimeBase 25/1
vc getCodecID CODEC_ID_H264
Nov 18, 2015 5:39:11 PM filepath main
SEVERE: bytOffset = 1748
Picture is not Complete
trys = 3
packet 1748
packet getTimeBase 1/1200000
vc getTimeBase 25/1
vc getCodecID CODEC_ID_H264
picture.isComplete()false
Nov 18, 2015 5:39:11 PM filepath main
SEVERE: bytOffset = 1748
Picture is not Complete
picture.isComplete()false
trys = 4
packet 1748
packet getTimeBase 1/1200000
vc getTimeBase 25/1
vc getCodecID CODEC_ID_H264
Nov 18, 2015 5:39:11 PM filepath main
SEVERE: bytOffset = 1748
picture.isComplete()false
Picture is not Complete
trys = 5
packet 1748
packet getTimeBase 1/1200000
vc getTimeBase 25/1
vc getCodecID CODEC_ID_H264
Nov 18, 2015 5:39:11 PM filepath main
SEVERE: bytOffset = 1748
picture.isComplete()false
Picture is not Complete
trys = 6
packet 1748
packet getTimeBase 1/1200000
vc getTimeBase 25/1
vc getCodecID CODEC_ID_H264
Nov 18, 2015 5:39:11 PM filepath main
SEVERE: bytOffset = 1748
picture.isComplete()false
Picture is not Complete
trys = 7
packet 1748
packet getTimeBase 1/1200000
vc getTimeBase 25/1
vc getCodecID CODEC_ID_H264
Nov 18, 2015 5:39:11 PM filepath main
SEVERE: bytOffset = 1748
picture.isComplete()false
Picture is not Complete
trys = 8
packet 1748
packet getTimeBase 1/1200000
vc getTimeBase 25/1
vc getCodecID CODEC_ID_H264
Nov 18, 2015 5:39:11 PM filepath main
SEVERE: bytOffset = 1748
picture.isComplete()false
Picture is not Complete
trys = 9
packet 1748
packet getTimeBase 1/1200000
vc getTimeBase 25/1
vc getCodecID CODEC_ID_H264
Nov 18, 2015 5:39:11 PM filepath main
SEVERE: bytOffset = 1748
picture.isComplete()false
Picture is not Complete
trys = 10
packet 1748
packet getTimeBase 1/1200000
vc getTimeBase 25/1
vc getCodecID CODEC_ID_H264
Nov 18, 2015 5:39:11 PM filepath main
SEVERE: bytOffset = 1748
picture.isComplete()true
isComplete
trys = 10 -
Error while trying to create dashcast stream using libx265
16 décembre 2015, par RahulI’m trying to create a h265 encoded stream from webcam using the follwoing command.
DashCast -vf video4linux2 -v4l2f mjpeg -v /dev/video0 -conf dashcast.conf -live-mediaThe content if dashcast.conf is
[v1]
type=video
codec=libx265
bitrate=1000000
framerate=25
width=640
height=480But I’m getting this error.
Options:
video source: /dev/video0
video format: video4linux2
v4l2 format: mjpeg
video crop: 0x0
audio source:
Configurations:
id:v1 res:640x480 vbr:1000000
[mjpeg @ 0xb194e0] Changeing bps to 8
Input #0, video4linux2,v4l2, from '/dev/video0':
Duration: N/A, start: 50349.327770, bitrate: N/A
Stream #0:0: Video: mjpeg, yuvj422p(pc, bt470bg/unknown/unknown), 1280x720, -5 kb/s, 30 fps, 30 tbr, 1000k tbn, 1000k tbc
AVCTX give frame duration of 1/1000000 - keeping requested rate -1, but this may result in unexpected behaviour.
[swscaler @ 0xb91ea0] deprecated pixel format used, make sure you did set range correctly
Press q or Q to exit...
[dashcast] Live system dropped a video frame
[dashcast] Live system dropped a video frame
x265 [info]: HEVC encoder version 1.85dcc9d3a928c400b
x265 [info]: build info [Linux][GCC 4.8.4][64 bit] 8bit
x265 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX AVX2 FMA3 LZCNT BMI2
x265 [info]: Main profile, Level-3 (Main tier)
x265 [info]: Thread pool created using 4 threads
x265 [info]: frame threads / pool features : 1 / wpp(8 rows)
[dashcast] Live system dropped a video frame
x265 [info]: Coding QT: max CU size, min CU size : 64 / 8
x265 [info]: Residual QT: max TU size, max depth : 32 / 1 inter / 1 intra
x265 [info]: ME / range / subpel / merge : hex / 57 / 2 / 2
x265 [info]: Keyframe min / max / scenecut : 25 / 250 / 40
x265 [info]: Lookahead / bframes / badapt : 20 / 4 / 2
x265 [info]: b-pyramid / weightp / weightb : 1 / 1 / 0
x265 [info]: References / ref-limit cu / depth : 3 / 0 / 0
x265 [info]: AQ: mode / str / qg-size / cu-tree : 1 / 1.0 / 32 / 1
x265 [info]: Rate Control / qCompress : ABR-1000 kbps / 0.60
x265 [info]: tools: rd=3 psy-rd=0.30 signhide tmvp strong-intra-smoothing
x265 [info]: tools: deblock sao
Cannot parse HEVC/H265 SPS/PPS
Bad Parameter: dc_gpac_video_write_config
Bad Parameter: gf_isom_start_segment
Cannot open output video file.
Generating MPD at 2015-11-24T19:17:46.040Z
StartTime: 2015-11-24T19:17:46.040Z - startNumber 1 - last number 1
Keyboard thread exit
[dashcast] Live system dropped a video frame
[dashcast] Live system dropped a video frameWhat could be the problem ? Changing codec to libx264 in the conf file works fine.
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