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    5 septembre 2013, par

    Certains 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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    21 juin 2013, par

    Présentez les changements dans votre MédiaSPIP ou les actualités de vos projets sur votre MédiaSPIP grâce à la rubrique actualités.
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    13 juin 2013

    Puis-je poster des contenus à partir d’une tablette Ipad ?
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Sur d’autres sites (7979)

  • How to match two audio files ?

    24 novembre 2014, par Janak Prajapati

    I am trying to develop script which compares two audio file.

    Lets say this is two audio music file recorded by Artist

    file1 : it is original song sung by an artist (Uploaded by admin)
    file2 : it is a file recorded by user. i.e user sings it and upload it to server

    now i want to check how closes is file2 to file1.

    Means i need to check if both songs match or not in terms of Lyrics, singing and all.

    I have searched many thing like audio fingerprinting , ffmpeg library and all it did not worked for me.

    I will go for any web technology you suggest.

    Please help me to find solution.

    Thanks.

  • Encoding H.264 video using FFmpeg C API

    18 juillet 2014, par GummiB

    I’m trying to encode a H.264 video with the FFMPEG C API.
    I have successfully compiled and executed the decoding/encoding example provided by FFMPEG.

    The problem I’m facing is that the .mpg file (encoded with AV_CODEC_ID_MPEG1VIDEO) the example creates works. Windows creates a thumbnail and everything. On the other hand the .h264 (encoded with AV_CODEC_ID_H264) file does not. When I try to play the file in VLC the play/pause button just flickers, no thumbnail in windows, no nothing.

    During encoding libx264 reports the following :

    [libx264 @ 004b81a0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
    
[libx264 @ 004b81a0] profile High, level 1.3
    
[libx264 @ 004b81a0] frame I:3     Avg QP:26.79  size:  2116
    
[libx264 @ 004b81a0] frame P:12    Avg QP:26.60  size:   789
    
[libx264 @ 004b81a0] frame B:10    Avg QP:31.39  size:   499
    
[libx264 @ 004b81a0] consecutive B-frames: 20.0% 80.0%
    
[libx264 @ 004b81a0] mb I  I16..4: 78.3% 11.6% 10.1%
    
[libx264 @ 004b81a0] mb P  I16..4: 77.4%  0.6%  0.1%  P16..4: 20.3%  0.7%  0.9%  0.0%  0.0%    skip: 0.0%
    
[libx264 @ 004b81a0] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  9.4%  0.2%  0.0%  direct:11.0%  skip:79.4%  L0:25.4% L1:35.4% BI:39.2%
    
[libx264 @ 004b81a0] final ratefactor: 17.03
    
[libx264 @ 004b81a0] 8x8 transform intra:3.4% inter:31.3%
    
[libx264 @ 004b81a0] direct mvs  spatial:0.0% temporal:100.0%
    
[libx264 @ 004b81a0] coded y,uvDC,uvAC intra: 4.4% 35.8% 1.6% inter: 1.3% 34.5% 9.5%
    
[libx264 @ 004b81a0] i16 v,h,dc,p:  0%  0%  0% 100%
    
[libx264 @ 004b81a0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu:  7% 20% 17% 49%  0%  0%  0%  1%  6%
    
[libx264 @ 004b81a0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 14%  7% 18% 45%  2%  7%  2%  3%  2%
    
[libx264 @ 004b81a0] i8c dc,h,v,p:  2%  6%  4% 88%
    
[libx264 @ 004b81a0] Weighted P-Frames: Y:0.0% UV:0.0%
    
[libx264 @ 004b81a0] ref P L0: 95.6%  1.6%  2.2%  0.5%  0.2%
    
[libx264 @ 004b81a0] ref B L0: 67.5% 28.5%  3.2%  0.8%
    
[libx264 @ 004b81a0] kb/s:166.45

    "ffprobe.exe test.h264 -show_streams" returns

    [STREAM]
    
index=0
    
codec_name=h264
    
codec_long_name=H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
    
profile=High
    
codec_type=video
    
codec_time_base=1/50
    
codec_tag_string=[0][0][0][0]
    
codec_tag=0x0000
    
width=352
    
height=288
    
has_b_frames=1
    
sample_aspect_ratio=0:1
    
display_aspect_ratio=0:1
    
pix_fmt=yuv420p
    
level=13
    
timecode=N/A
    
id=N/A
    
r_frame_rate=50/2
    
avg_frame_rate=25/1
    
time_base=1/1200000
    
start_pts=N/A
    
start_time=N/A
    
duration_ts=N/A
    
duration=N/A
    
bit_rate=N/A
    
nb_frames=N/A
    
nb_read_frames=N/A
    
nb_read_packets=N/A
    
DISPOSITION:default=0
    
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
    
[/STREAM]

    There you can see :

    start_time=N/A
    
duration_ts=N/A
    
duration=N/A

    I have tried countless changes to the AVCodecContext and multitude of parameters options to av_opt_set function. Still no luck getting a working H.264 video. I have even tried different builds of FFmpeg. No luck.

    I’m using the "FFmpeg git-0fb64da 32-bit Dev" build from Zeranoe and MinGw 4.7.2

  • Encoding H.264 video using FFmpeg C API

    18 juillet 2014, par GummiB

    I’m trying to encode a H.264 video with the FFMPEG C API.
    I have successfully compiled and executed the decoding/encoding example provided by FFMPEG.

    The problem I’m facing is that the .mpg file (encoded with AV_CODEC_ID_MPEG1VIDEO) the example creates works. Windows creates a thumbnail and everything. On the other hand the .h264 (encoded with AV_CODEC_ID_H264) file does not. When I try to play the file in VLC the play/pause button just flickers, no thumbnail in windows, no nothing.

    During encoding libx264 reports the following :

    [libx264 @ 004b81a0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
    
[libx264 @ 004b81a0] profile High, level 1.3
    
[libx264 @ 004b81a0] frame I:3     Avg QP:26.79  size:  2116
    
[libx264 @ 004b81a0] frame P:12    Avg QP:26.60  size:   789
    
[libx264 @ 004b81a0] frame B:10    Avg QP:31.39  size:   499
    
[libx264 @ 004b81a0] consecutive B-frames: 20.0% 80.0%
    
[libx264 @ 004b81a0] mb I  I16..4: 78.3% 11.6% 10.1%
    
[libx264 @ 004b81a0] mb P  I16..4: 77.4%  0.6%  0.1%  P16..4: 20.3%  0.7%  0.9%  0.0%  0.0%    skip: 0.0%
    
[libx264 @ 004b81a0] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  9.4%  0.2%  0.0%  direct:11.0%  skip:79.4%  L0:25.4% L1:35.4% BI:39.2%
    
[libx264 @ 004b81a0] final ratefactor: 17.03
    
[libx264 @ 004b81a0] 8x8 transform intra:3.4% inter:31.3%
    
[libx264 @ 004b81a0] direct mvs  spatial:0.0% temporal:100.0%
    
[libx264 @ 004b81a0] coded y,uvDC,uvAC intra: 4.4% 35.8% 1.6% inter: 1.3% 34.5% 9.5%
    
[libx264 @ 004b81a0] i16 v,h,dc,p:  0%  0%  0% 100%
    
[libx264 @ 004b81a0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu:  7% 20% 17% 49%  0%  0%  0%  1%  6%
    
[libx264 @ 004b81a0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 14%  7% 18% 45%  2%  7%  2%  3%  2%
    
[libx264 @ 004b81a0] i8c dc,h,v,p:  2%  6%  4% 88%
    
[libx264 @ 004b81a0] Weighted P-Frames: Y:0.0% UV:0.0%
    
[libx264 @ 004b81a0] ref P L0: 95.6%  1.6%  2.2%  0.5%  0.2%
    
[libx264 @ 004b81a0] ref B L0: 67.5% 28.5%  3.2%  0.8%
    
[libx264 @ 004b81a0] kb/s:166.45

    "ffprobe.exe test.h264 -show_streams" returns

    [STREAM]
    
index=0
    
codec_name=h264
    
codec_long_name=H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
    
profile=High
    
codec_type=video
    
codec_time_base=1/50
    
codec_tag_string=[0][0][0][0]
    
codec_tag=0x0000
    
width=352
    
height=288
    
has_b_frames=1
    
sample_aspect_ratio=0:1
    
display_aspect_ratio=0:1
    
pix_fmt=yuv420p
    
level=13
    
timecode=N/A
    
id=N/A
    
r_frame_rate=50/2
    
avg_frame_rate=25/1
    
time_base=1/1200000
    
start_pts=N/A
    
start_time=N/A
    
duration_ts=N/A
    
duration=N/A
    
bit_rate=N/A
    
nb_frames=N/A
    
nb_read_frames=N/A
    
nb_read_packets=N/A
    
DISPOSITION:default=0
    
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
    
[/STREAM]

    There you can see :

    start_time=N/A
    
duration_ts=N/A
    
duration=N/A

    I have tried countless changes to the AVCodecContext and multitude of parameters options to av_opt_set function. Still no luck getting a working H.264 video. I have even tried different builds of FFmpeg. No luck.

    I’m using the "FFmpeg git-0fb64da 32-bit Dev" build from Zeranoe and MinGw 4.7.2

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