Re: [FFmpeg-user] Help with creating MP4 video with multiple audio tracks

[Chiara via ffmpeg-user]

Hi Nicolas,

Of course! Thank you very much, it works now.

Cheers,
Chiara

-

Chiara Rendeková

Marketing Assistant 

+421 911 437 039 chiara.rendek...@foliovision.com

Foliovision s.r.o. | Strelecká 2 - 81101 Bratislava - Slovakia

> Dňa 18. 1. 2021 o 8:41, Nicolas George  napísal:
> 
> Chiara via ffmpeg-user (12021-01-18):
>> I’m new to this, so I apologize if I’m missing something trivial. I
>> need to create an .mp4 video output with multiple audio tracks in it.
>> I run the command:
>> 
>> ffmpeg -i sample-mp4-file.mp4 -i hindi.aac -i tamil.aac -i telugu.aac
>> -map 1 -map 2 -map 3 -metadata:s:a:0 language=eng -metadata:s:a:1
>> language=tam -metadata:s:a:2 language=tel -metadata:s:a:3 language=hin
>> -codec copy multilanguage.mp4
>> 
>> However, the output includes only the multiple audio tracks with no
>> video (0 kB)
> 
> You have not mapped the video file.
> 
> Regards,
> 
> -- 
>  Nicolas George
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Re: [FFmpeg-user] Help with creating MP4 video with multiple audio tracks

[Nicolas George]

Chiara via ffmpeg-user (12021-01-18):
> I’m new to this, so I apologize if I’m missing something trivial. I
> need to create an .mp4 video output with multiple audio tracks in it.
> I run the command:
> 
> ffmpeg -i sample-mp4-file.mp4 -i hindi.aac -i tamil.aac -i telugu.aac
> -map 1 -map 2 -map 3 -metadata:s:a:0 language=eng -metadata:s:a:1
> language=tam -metadata:s:a:2 language=tel -metadata:s:a:3 language=hin
> -codec copy multilanguage.mp4
> 
> However, the output includes only the multiple audio tracks with no
> video (0 kB)

You have not mapped the video file.

Regards,

-- 
  Nicolas George
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[FFmpeg-user] Help with creating MP4 video with multiple audio tracks

[Chiara via ffmpeg-user]

Hello,

I’m new to this, so I apologize if I’m missing something trivial. I need to 
create an .mp4 video output with multiple audio tracks in it. I run the command:

ffmpeg -i sample-mp4-file.mp4 -i hindi.aac -i tamil.aac -i telugu.aac -map 1 
-map 2 -map 3 -metadata:s:a:0 language=eng -metadata:s:a:1 language=tam 
-metadata:s:a:2 language=tel -metadata:s:a:3 language=hin -codec copy 
multilanguage.mp4

However, the output includes only the multiple audio tracks with no video (0 
kB) – see my  output results .

What am I doing wrong? Why am I always getting export missing the video? So 
far, I tried various .mp4 video files, and also MP3 format for audio tracks.

Any kind of help would be much appreciated.

Thank you.

Best regards,

Chiara

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Re: [FFmpeg-user] Decklink input extra filter inserted

[Carl Zwanzig]

I think this may be the reason (and I may be wrong)-
[2021-01-15T10:32:56.818] [auto_scaler_0 @ 0x5654058cefc0]
w:1920 h:1080 fmt:uyvy422 sar:0/1
->
w:1920 h:1080 fmt:yuv444p sar:0/1

If the decklink is emitting uyvy422-
Stream #0:1, 2, 1/100: Video: rawvideo, 1 reference frame (UYVY /
0x59565955), uyvy422(progressive), 1920x1080,

and the next filter needs yuv444p, it's gotta be converted somewhere/somehow.

I was going to suggest using graph2dot to see what the filter graph really 
looks like, but it dies with "No such filter: 'hwupload_cuda'"


z!



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[FFmpeg-user] Determine when h.264 TS/UDP frame rate has changed in C/C++

[Kevin Hise]

I'm decoding an h.264 video as TS over UDP from a Haivision encoder.
When I change the video output from the camera from one resolution
(like 720p) to something else (say 1080p) I can see a change in the
video context or the parser structures that indicate the new video
resolution.

However when I change the video to something that has the same
resolution BUT A DIFFERENT FRAME RATE (say from 59.9 to 60, or from 60
to 50) the video still properly decodes but none of the AVRational
values that should compute to the frame rate change...they all seem to
contain the same value from whatever the video frame rate was when
decoding started.

Even the API function "av guess frame rate" returns the original frame
rate, not the actual current rate.

Is there any way to determine what the *current* frame rate is,
without having to destroy and recreate the decoder context and parser?
Is there a way to determine that something has changed in the video
and the parser had to do some "thinking" (like it seems to do) so that
it could continue with decoding?

I need to know so I can update some rendering and timing values.

Thanks!
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Re: [FFmpeg-user] Trouble merging gtts/ffmpeg created mp3 files

[Sol Lederman]

A solution was posted on the Superuser forum. I'm good.

On Sun, Jan 17, 2021 at 5:43 PM Sol Lederman wrote:

> I'd appreciate help with this problem I'm having that I've posted here:
> https://superuser.com/questions/1618433/trouble-merging-gtts-ffmpeg-created-mp3-files/
>
> Thanks very much.
>
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Re: [FFmpeg-user] Decklink input extra filter inserted

[Bartosz Ziemski]

The filter "auto_scaler_0" according to the following logs fragment:
[2021-01-15T10:32:56.817] [auto_scaler_0 @ 0x5654058cefc0] Setting 'flags'
to value 'bicubic'
[2021-01-15T10:32:56.817] [auto_scaler_0 @ 0x5654058cefc0] w:iw h:ih
flags:'bicubic' interl:0
[2021-01-15T10:32:56.817] [Parsed_hwupload_cuda_0 @ 0x5654051a0100]
auto-inserting filter 'auto_scaler_0' between the filter 'graph 0 input
from stream 0:1' and the filter 'Parsed_hwupload_cuda_0'
[2021-01-15T10:32:56.818] [auto_scaler_0 @ 0x5654058cefc0] picking yuv444p
out of 8 ref:uyvy422 alpha:0
[2021-01-15T10:32:56.818] [auto_scaler_0 @ 0x5654058cefc0] w:1920 h:1080
fmt:uyvy422 sar:0/1 -> w:1920 h:1080 fmt:yuv444p sar:0/1 flags:0x4

Best regards,
Bartek Ziemski
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[FFmpeg-user] Trouble merging gtts/ffmpeg created mp3 files

[Sol Lederman]

I'd appreciate help with this problem I'm having that I've posted here:
https://superuser.com/questions/1618433/trouble-merging-gtts-ffmpeg-created-mp3-files/

Thanks very much.
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Re: [FFmpeg-user] Use source wallclock (NTP) in RTSP/RTCP streams to setpts for inter-media synchronization

[David Gessel]

 Original Message 
Subject: Re: [FFmpeg-user] Use source wallclock (NTP) in RTSP/RTCP streams to 
setpts for inter-media synchronization
From: Carl Eugen Hoyos 
To: FFmpeg user questions 
Date: 2021-01-18 00:24+0300


Am Sa., 16. Jan. 2021 um 23:49 Uhr schrieb David Gessel
:


ffmpeg  -max_delay 50 -reorder_queue_size 1 \
   -fflags nobuffer -re -rtsp_transport udp -an -flags low_delay 
-strict experimental\
   -fflags nobuffer -re -thread_queue_size 1024 -i 
rtsp://192.168.100.34:554/stream/profile0\
   -fflags nobuffer -re -thread_queue_size 1024 -i 
rtsp://192.168.100.57:554/stream/profile0\
   -fflags nobuffer -re -thread_queue_size 1024 -i 
rtsp://192.168.100.48:554/stream/profile0\
   -fflags nobuffer -re -thread_queue_size 1024 -i 
rtsp://192.168.100.34:554/stream/profile1\
   -fflags nobuffer -re -thread_queue_size 1024 -i 
rtsp://192.168.100.57:554/stream/profile1\
   -fflags nobuffer -re -thread_queue_size 1024 -i 
rtsp://192.168.100.48:554/stream/profile1\
  -filter_complex "
  nullsrc=size=3554x480 [base];
  [0:v] setpts=N/(8.33*TB) [CAM1];
  [1:v] setpts=N/(8.33*TB) [CAM2];
  [2:v] setpts=N/(8.33*TB) [CAM3];
  [3:v] setpts=N/(8.33*TB) [CAM4];
  [4:v] setpts=N/(8.33*TB) [CAM5];
  [5:v] setpts=N/(8.33*TB) [CAM6];
  [base][CAM1] overlay=x=0 [tmp1];
  [tmp1][CAM2] overlay=x=583 [tmp2];
  [tmp2][CAM3] overlay=x=1165 [tmp3];
  [tmp3][CAM4] overlay=x=1748 [tmp4];
  [tmp4][CAM5] overlay=x=2331 [tmp5];
  [tmp5][CAM6] overlay=x=2914 " \
  -c:v libx264 -tune zerolatency -an -preset ultrafast -crf 22 -f 
matroska - |\
  ffplay -framedrop -sync ext -probesize 32 -


You should really test with file output and complete, uncut console
output missing.


Thanks for the help Carl,

The console output is attached below



As long as you are using the setpts filter, you disable all
synchronisation and you
cannot get the output you want.


Makes sense, thanks for the hint.  A link to a screen cap of the command 
without setpts attached below.  The time code is burned in at the sources.  I 
let it run for a few minutes and the streams did not sync.

https://www.brt.llc/insecure/ffmpeg_sync_issue.webp

(Babri the kitty says hi)

Console output follows:



$ ffmpeg  -max_delay 50 -reorder_queue_size 1 \

 -fflags nobuffer -re -rtsp_transport udp -an -flags low_delay -strict 
experimental\
 -fflags nobuffer -re -thread_queue_size 1024 -i 
rtsp://192.168.100.34:554/stream/profile0\
 -fflags nobuffer -re -thread_queue_size 1024 -i 
rtsp://192.168.100.57:554/stream/profile0\
 -fflags nobuffer -re -thread_queue_size 1024 -i 
rtsp://192.168.100.48:554/stream/profile0\
 -fflags nobuffer -re -thread_queue_size 1024 -i 
rtsp://192.168.100.34:554/stream/profile1\
 -fflags nobuffer -re -thread_queue_size 1024 -i 
rtsp://192.168.100.57:554/stream/profile1\
 -fflags nobuffer -re -thread_queue_size 1024 -i 
rtsp://192.168.100.48:554/stream/profile1\
-filter_complex "
nullsrc=size=3554x480 [base];
[base][0:v] overlay=x=0 [tmp1];
[tmp1][1:v] overlay=x=583 [tmp2];
[tmp2][2:v] overlay=x=1165 [tmp3];
[tmp3][3:v] overlay=x=1748 [tmp4];
[tmp4][4:v] overlay=x=2331 [tmp5];
[tmp5][5:v] overlay=x=2914 " \
-c:v libx264 -tune zerolatency -an -preset ultrafast -crf 22 -f 
matroska - |\
ffplay -framedrop -sync ext -probesize 32 -

ffmpeg version N-100596-geacad34 Copyright (c) 2000-2021 the FFmpeg developers
  built with gcc 9 (Ubuntu 9.3.0-17ubuntu1~20.04)
  configuration: --prefix=/home/gessel/ffmpeg_build --pkg-config-flags=--static 
--extra-cflags=-I/home/gessel/ffmpeg_build/include 
--extra-ldflags=-L/home/gessel/ffmpeg_build/lib --extra-libs='-lpthread -lm' 
--bindir=/home/gessel/bin --enable-gpl --enable-libass --enable-libfdk-aac 
--enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora 
--enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 
--enable-nonfree
  libavutil  56. 63.100 / 56. 63.100
  libavcodec 58.115.102 / 58.115.102
  libavformat58. 65.101 / 58. 65.101
  libavdevice58. 11.103 / 58. 11.103
  libavfilter 7. 95.100 /  7. 95.100
  libswscale  5.  8.100 /  5.  8.100
  libswresample   3.  8.100 /  3.  8.100
  libpostproc55.  8.100 / 55.  8.100
ffplay version 4.2.4-1ubuntu0.1 Copyright (c) 2003-2020 the FFmpeg developers
  built with gcc 9 (Ubuntu 9.3.0-10ubuntu2)
  configuration: --prefix=/usr --extra-version=1ubuntu0.1 --toolchain=hardened 
--libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu 
--arch=amd64 --enable-gpl --disable-stripping --enable-avresample 
--disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa 
--enable-libaom --enable-libass --enable-libbluray --enable-libbs2b 

Re: [FFmpeg-user] Decklink input extra filter inserted

[Carl Eugen Hoyos]

Am Do., 14. Jan. 2021 um 18:43 Uhr schrieb Bartosz Ziemski
:

> I am trying to save the Decklink input as a video file (applying specified
> below filters) and I am wondering why the extra filter is inserted.

Which filter?

Carl Eugen
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Re: [FFmpeg-user] Compiling FFMpeg

[Reindl Harald]

Am 17.01.21 um 22:39 schrieb Carl Eugen Hoyos:

Am Fr., 15. Jan. 2021 um 11:29 Uhr schrieb Reindl Harald
:


configuration: --prefix=/usr/local --bindir=/usr/local/bin
--mandir=/usr/local/man
--extra-cflags=


Since other people may read this:
Generally, extra-*flags should only be used if really necessary,
the configure line in question looks very broken


you repeat that bullshit now for nearly a decade
what is broken and why?
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Re: [FFmpeg-user] Use source wallclock (NTP) in RTSP/RTCP streams to setpts for inter-media synchronization

[Carl Eugen Hoyos]

Am Sa., 16. Jan. 2021 um 23:49 Uhr schrieb David Gessel
:

> ffmpeg  -max_delay 50 -reorder_queue_size 1 \
>   -fflags nobuffer -re -rtsp_transport udp -an -flags low_delay 
> -strict experimental\
>   -fflags nobuffer -re -thread_queue_size 1024 -i 
> rtsp://192.168.100.34:554/stream/profile0\
>   -fflags nobuffer -re -thread_queue_size 1024 -i 
> rtsp://192.168.100.57:554/stream/profile0\
>   -fflags nobuffer -re -thread_queue_size 1024 -i 
> rtsp://192.168.100.48:554/stream/profile0\
>   -fflags nobuffer -re -thread_queue_size 1024 -i 
> rtsp://192.168.100.34:554/stream/profile1\
>   -fflags nobuffer -re -thread_queue_size 1024 -i 
> rtsp://192.168.100.57:554/stream/profile1\
>   -fflags nobuffer -re -thread_queue_size 1024 -i 
> rtsp://192.168.100.48:554/stream/profile1\
>  -filter_complex "
>  nullsrc=size=3554x480 [base];
>  [0:v] setpts=N/(8.33*TB) [CAM1];
>  [1:v] setpts=N/(8.33*TB) [CAM2];
>  [2:v] setpts=N/(8.33*TB) [CAM3];
>  [3:v] setpts=N/(8.33*TB) [CAM4];
>  [4:v] setpts=N/(8.33*TB) [CAM5];
>  [5:v] setpts=N/(8.33*TB) [CAM6];
>  [base][CAM1] overlay=x=0 [tmp1];
>  [tmp1][CAM2] overlay=x=583 [tmp2];
>  [tmp2][CAM3] overlay=x=1165 [tmp3];
>  [tmp3][CAM4] overlay=x=1748 [tmp4];
>  [tmp4][CAM5] overlay=x=2331 [tmp5];
>  [tmp5][CAM6] overlay=x=2914 " \
>  -c:v libx264 -tune zerolatency -an -preset ultrafast -crf 22 -f 
> matroska - |\
>  ffplay -framedrop -sync ext -probesize 32 -

You should really test with file output and complete, uncut console
output missing.

As long as you are using the setpts filter, you disable all
synchronisation and you
cannot get the output you want.

Carl Eugen
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Re: [FFmpeg-user] Compiling FFMpeg

[Carl Eugen Hoyos]

Am Fr., 15. Jan. 2021 um 11:29 Uhr schrieb Reindl Harald
:

>configuration: --prefix=/usr/local --bindir=/usr/local/bin
> --mandir=/usr/local/man
> --extra-cflags=

Since other people may read this:
Generally, extra-*flags should only be used if really necessary,
the configure line in question looks very broken.

Carl Eugen
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Re: [FFmpeg-user] Compiling FFmpeg with Nvidia GPU acceleration

[madderek--- via ffmpeg-user]

-Original Message-
From: ffmpeg-user  On Behalf Of Carl Zwanzig
Sent: 17 January 2021 21:07
To: ffmpeg-user@ffmpeg.org
Subject: Re: [FFmpeg-user] Compiling FFmpeg with Nvidia GPU acceleration

Yes, you are right that I don't understand the compilation of software 
packages.  That's why I was hoping that someone would be kind enough to explain 
how to solve the problem, even if it's not an ffmpeg issue.
The instruction that I am using to produce a video from images works, it's just 
very slow.

Derek
Please fix your email quoting and send plain text to this list.

On 1/16/2021 6:47 AM, madderek--- via ffmpeg-user wrote:
> C:\Windows\System32\nv-codec-headers>make install PREFIX=/usr
> 
> make: *** No rule to make target `install'.  Stop.

It really sounds like you are not familiar with the basic tools used to compile 
& build software packages. I realize that "I'm not an expert on any of this!" 
but you need to do some research about the command line build tools and how to 
use them. This is not an ffmpeg issue.

As I said previously, try first building ffmpeg using the instruction from 
ffmpeg and without nvidia/cuda; only when that works try adding nvidia.

Later,

z!
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Re: [FFmpeg-user] ffmpeg with vulkan and or opencl

[Carl Eugen Hoyos]

Am Sa., 16. Jan. 2021 um 19:13 Uhr schrieb owen s :
>
> I have installed opencl and vulkan drivers on linux: Linux
> 5.8.0-7630-generic #32~1609193707~20.10~781bb80-Ubuntu SMP Tue Jan 5
> 21:29:56 UTC 2 x86_64 x86_64 x86_64 GNU/Linux
>
> I am using ffmpeg version:
> ffmpeg version 4.3.1-4ubuntu1 Copyright (c) 2000-2020 the FFmpeg developers
> built with gcc 10 (Ubuntu 10.2.0-9ubuntu2)

Please test current FFmpeg git head before asking questions here.

> I am running this ffmpeg command
> ffmpeg -y -hwaccel any \
> -loop 1 -framerate 30 -re \
> -hwaccel dxva2 \

I may misunderstand your question but there is no dxva2 on Linux.

> -i ./1280x720.jpg \
> -stream_loop -1 -re \
> -i ./audio.mp3 \
> -vcodec libx264 -pix_fmt yuv420p \
> -b:v 2500k -maxrate 2500k -bufsize 1k \
> -preset slow -tune stillimage \
> -b:a 128k -ar 44100 -ac 2 -acodec aac \
> -af "dynaudnorm=f=150:g=15" \
> -g 60 \
> -f flv tmp.flv

Carl Eugen
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Re: [FFmpeg-user] iOS AVPlayer won't play audio files from FFMPEG

[Carl Eugen Hoyos]

Am Sa., 16. Jan. 2021 um 18:57 Uhr schrieb Marcus P :

> ffmpeg -i "/path/to/audio/track.mp3" -vn -strict -2 -acodec pcm_u8 -f
> wav -listen 1 -seekable 1 http://localhost:8090/restream.wav

Unrelated:
You are not sending valid wav files like this.

[...]

> Can we solve this by making changes to FFMPEG to return 206?

If I understand your request correctly, you are not asking for a
change of a return type (you could probably do that yourself)
but for the implementation of byte range requests.
I don't think this is possible at all with FFmpeg.

Carl Eugen
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Re: [FFmpeg-user] Compiling FFmpeg with Nvidia GPU acceleration

[Carl Zwanzig]

Please fix your email quoting and send plain text to this list.

On 1/16/2021 6:47 AM, madderek--- via ffmpeg-user wrote:

C:\Windows\System32\nv-codec-headers>make install PREFIX=/usr

make: *** No rule to make target `install'.  Stop.


It really sounds like you are not familiar with the basic tools used to 
compile & build software packages. I realize that "I'm not an expert on any 
of this!" but you need to do some research about the command line build 
tools and how to use them. This is not an ffmpeg issue.


As I said previously, try first building ffmpeg using the instruction from 
ffmpeg and without nvidia/cuda; only when that works try adding nvidia.


Later,

z!
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Re: [FFmpeg-user] how do I get rid of ffmpeg.exe that prevents me from deleting a vLC file?

[Carl Zwanzig]

On 1/17/2021 11:04 AM, Catriel Beeri wrote:

A VLC file is used to play music/videos. It is a pretty old  volunteer
effort.


Apparently .vlc files are playlists (and identical to m3u files); I'm 
surprised anyone uses that file extension anymore.



Now, however, it seems to be gone.


probably because the process finally ended.

That said, the first problem report was very lacking in useful information.

z!
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Re: [FFmpeg-user] how do I get rid of ffmpeg.exe that prevents me from deleting a vLC file?

[Catriel Beeri]

A VLC file is used to play music/videos. It is a pretty old  volunteer
effort.
As for the problem, I did close a process before I sent the request for
help.
The problem seemed to persist.
Now, however, it seems to be gone.

Thanks for the quick response.
Catriel Beeri

On Sun, Jan 17, 2021 at 8:44 PM Reindl Harald 
wrote:

> you are talking in miracles but given the .exe it's likely some "windows
> can't delete files with open handles" issue
>
> but what is a "vlc file"?
>
> just kill all processes which have open the file you want to delete -
> that's what the taskmanager is for
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-- 
כתריאל בארי
פרופסור (אמריטוס), ביה"ס להנדסה ולמדעי המחשב על שם רחל וסלים בנין,
האוניברסיטה העברית בירושלים
 Prof. (Emeritus) Catriel Beeri
The Rachel & Selim Benin School of Computer Science and Engineering
The Hebrew university of Jerusalem


  
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Re: [FFmpeg-user] how do I get rid of ffmpeg.exe that prevents me from deleting a vLC file?

[Reindl Harald]

you are talking in miracles but given the .exe it's likely some "windows 
can't delete files with open handles" issue


but what is a "vlc file"?

just kill all processes which have open the file you want to delete - 
that's what the taskmanager is for

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[FFmpeg-user] how do I get rid of ffmpeg.exe that prevents me from deleting a vLC file?

[Catriel Beeri]

-- 
כתריאל בארי
פרופסור (אמריטוס), ביה"ס להנדסה ולמדעי המחשב על שם רחל וסלים בנין,
האוניברסיטה העברית בירושלים
 Prof. (Emeritus) Catriel Beeri
The Rachel & Selim Benin School of Computer Science and Engineering
The Hebrew university of Jerusalem


  
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