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  • Installation en mode ferme

    4 février 2011, par

    Le mode ferme permet d’héberger plusieurs sites de type MediaSPIP en n’installant qu’une seule fois son noyau fonctionnel.
    C’est la méthode que nous utilisons sur cette même plateforme.
    L’utilisation en mode ferme nécessite de connaïtre un peu le mécanisme de SPIP contrairement à la version standalone qui ne nécessite pas réellement de connaissances spécifique puisque l’espace privé habituel de SPIP n’est plus utilisé.
    Dans un premier temps, vous devez avoir installé les mêmes fichiers que l’installation (...)

  • Multilang : améliorer l’interface pour les blocs multilingues

    18 février 2011, par

    Multilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
    Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela.

  • De l’upload à la vidéo finale [version standalone]

    31 janvier 2010, par

    Le chemin d’un document audio ou vidéo dans SPIPMotion est divisé en trois étapes distinctes.
    Upload et récupération d’informations de la vidéo source
    Dans un premier temps, il est nécessaire de créer un article SPIP et de lui joindre le document vidéo "source".
    Au moment où ce document est joint à l’article, deux actions supplémentaires au comportement normal sont exécutées : La récupération des informations techniques des flux audio et video du fichier ; La génération d’une vignette : extraction d’une (...)

Sur d’autres sites (5795)

  • Stream ffmpeg transcoding result to S3

    7 juin 2019, par mabead

    I want to transcode a large file using FFMPEG and store the result directly on AWS S3. This will be done inside of an AWS Lambda that has limited tmp space so I can’t store the transcoding result locally and then upload it to S3 in a second step. I won’t have enough tmp space. I therefore want to store the FFMPEG output directly on S3.

    I therefore created a S3 pre-signed url that allows ’PUT’ :

    var outputPath = s3Client.GetPreSignedURL(new Amazon.S3.Model.GetPreSignedUrlRequest
    
{
    
    BucketName = "my-bucket",
    
    Expires = DateTime.UtcNow.AddMinutes(5),
    
    Key = "output.mp3",
    
    Verb = HttpVerb.PUT,
    
});

    I then called ffmpeg with the resulting pre-signed url :

    ffmpeg -i C:\input.wav -y -vn -ar 44100 -ac 2 -ab 192k -f mp3 https://my-bucket.s3.amazonaws.com/output.mp3?AWSAccessKeyId=AKIAJDSGJWM63VQEXHIQ&Expires=1550427237&Signature=%2BE8Wc%2F%2FQYrvGxzc%2FgXnsvauKnac%3D

    FFMPEG returns an exit code of 1 with the following output :

    ffmpeg version N-93120-ga84af760b8 Copyright (c) 2000-2019 the FFmpeg developers
    
  built with gcc 8.2.1 (GCC) 20190212
    
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
    
  libavutil      56. 26.100 / 56. 26.100
    
  libavcodec     58. 47.100 / 58. 47.100
    
  libavformat    58. 26.101 / 58. 26.101
    
  libavdevice    58.  6.101 / 58.  6.101
    
  libavfilter     7. 48.100 /  7. 48.100
    
  libswscale      5.  4.100 /  5.  4.100
    
  libswresample   3.  4.100 /  3.  4.100
    
  libpostproc    55.  4.100 / 55.  4.100
    
Guessed Channel Layout for Input Stream #0.0 : stereo
    
Input #0, wav, from 'C:\input.wav':
    
  Duration: 00:04:16.72, bitrate: 3072 kb/s
    
    Stream #0:0: Audio: pcm_s32le ([1][0][0][0] / 0x0001), 48000 Hz, stereo, s32, 3072 kb/s
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (pcm_s32le (native) -> mp3 (libmp3lame))
    
Press [q] to stop, [?] for help
    
Output #0, mp3, to 'https://my-bucket.s3.amazonaws.com/output.mp3?AWSAccessKeyId=AKIAJDSGJWM63VQEXHIQ&Expires=1550427237&Signature=%2BE8Wc%2F%2FQYrvGxzc%2FgXnsvauKnac%3D':
    
  Metadata:
    
    TSSE            : Lavf58.26.101
    
    Stream #0:0: Audio: mp3 (libmp3lame), 44100 Hz, stereo, s32p, 192 kb/s
    
    Metadata:
    
      encoder         : Lavc58.47.100 libmp3lame
    
size=     577kB time=00:00:24.58 bitrate= 192.2kbits/s speed=49.1x    
    
size=    1109kB time=00:00:47.28 bitrate= 192.1kbits/s speed=47.2x    
    
[tls @ 000001d73d786b00] Error in the push function.
    
av_interleaved_write_frame(): I/O error
    
Error writing trailer of https://my-bucket.s3.amazonaws.com/output.mp3?AWSAccessKeyId=AKIAJDSGJWM63VQEXHIQ&Expires=1550427237&Signature=%2BE8Wc%2F%2FQYrvGxzc%2FgXnsvauKnac%3D: I/O error
    
size=    1143kB time=00:00:48.77 bitrate= 192.0kbits/s speed=  47x    
    
video:0kB audio:1144kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
    
[tls @ 000001d73d786b00] The specified session has been invalidated for some reason.
    
[tls @ 000001d73d786b00] Error in the pull function.
    
[https @ 000001d73d784fc0] URL read error:  -5
    
Conversion failed!

    As you can see, I have a URL read error. This is a little surprising to me since I want to output to this url and not read it.

    Anybody know how I can store directly my FFMPEG output directly to S3 without having to store it locally first ?

    Edit 1
    I then tried to use the -method PUT parameter and use http instead of https to remove TLS from the equation. Here’s the output that I got when running ffmpeg with the -v trace option.

    ffmpeg version N-93120-ga84af760b8 Copyright (c) 2000-2019 the FFmpeg developers
    
  built with gcc 8.2.1 (GCC) 20190212
    
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
    
  libavutil      56. 26.100 / 56. 26.100
    
  libavcodec     58. 47.100 / 58. 47.100
    
  libavformat    58. 26.101 / 58. 26.101
    
  libavdevice    58.  6.101 / 58.  6.101
    
  libavfilter     7. 48.100 /  7. 48.100
    
  libswscale      5.  4.100 /  5.  4.100
    
  libswresample   3.  4.100 /  3.  4.100
    
  libpostproc    55.  4.100 / 55.  4.100
    
Splitting the commandline.
    
Reading option '-i' ... matched as input url with argument 'C:\input.wav'.
    
Reading option '-y' ... matched as option 'y' (overwrite output files) with argument '1'.
    
Reading option '-vn' ... matched as option 'vn' (disable video) with argument '1'.
    
Reading option '-ar' ... matched as option 'ar' (set audio sampling rate (in Hz)) with argument '44100'.
    
Reading option '-ac' ... matched as option 'ac' (set number of audio channels) with argument '2'.
    
Reading option '-ab' ... matched as option 'ab' (audio bitrate (please use -b:a)) with argument '192k'.
    
Reading option '-f' ... matched as option 'f' (force format) with argument 'mp3'.
    
Reading option '-method' ... matched as AVOption 'method' with argument 'PUT'.
    
Reading option '-v' ... matched as option 'v' (set logging level) with argument 'trace'.
    
Reading option 'https://my-bucket.s3.amazonaws.com/output.mp3?AWSAccessKeyId=AKIAJDSGJWM63VQEXHIQ&Expires=1550695990&Signature=dy3RVqDlX%2BlJ0INlDkl0Lm1Rqb4%3D' ... matched as output url.
    
Finished splitting the commandline.
    
Parsing a group of options: global .
    
Applying option y (overwrite output files) with argument 1.
    
Applying option v (set logging level) with argument trace.
    
Successfully parsed a group of options.
    
Parsing a group of options: input url C:\input.wav.
    
Successfully parsed a group of options.
    
Opening an input file: C:\input.wav.
    
[NULL @ 000001fb37abb180] Opening 'C:\input.wav' for reading
    
[file @ 000001fb37abc180] Setting default whitelist 'file,crypto'
    
Probing wav score:99 size:2048
    
[wav @ 000001fb37abb180] Format wav probed with size=2048 and score=99
    
[wav @ 000001fb37abb180] Before avformat_find_stream_info() pos: 54 bytes read:65590 seeks:1 nb_streams:1
    
[wav @ 000001fb37abb180] parser not found for codec pcm_s32le, packets or times may be invalid.
    
    Last message repeated 1 times
    
[wav @ 000001fb37abb180] All info found
    
[wav @ 000001fb37abb180] stream 0: start_time: -192153584101141.156 duration: 256.716
    
[wav @ 000001fb37abb180] format: start_time: -9223372036854.775 duration: 256.716 bitrate=3072 kb/s
    
[wav @ 000001fb37abb180] After avformat_find_stream_info() pos: 204854 bytes read:294966 seeks:1 frames:50
    
Guessed Channel Layout for Input Stream #0.0 : stereo
    
Input #0, wav, from 'C:\input.wav':
    
  Duration: 00:04:16.72, bitrate: 3072 kb/s
    
    Stream #0:0, 50, 1/48000: Audio: pcm_s32le ([1][0][0][0] / 0x0001), 48000 Hz, stereo, s32, 3072 kb/s
    
Successfully opened the file.
    
Parsing a group of options: output url https://my-bucket.s3.amazonaws.com/output.mp3?AWSAccessKeyId=AKIAJDSGJWM63VQEXHIQ&Expires=1550695990&Signature=dy3RVqDlX%2BlJ0INlDkl0Lm1Rqb4%3D.
    
Applying option vn (disable video) with argument 1.
    
Applying option ar (set audio sampling rate (in Hz)) with argument 44100.
    
Applying option ac (set number of audio channels) with argument 2.
    
Applying option ab (audio bitrate (please use -b:a)) with argument 192k.
    
Applying option f (force format) with argument mp3.
    
Successfully parsed a group of options.
    
Opening an output file: https://my-bucket.s3.amazonaws.com/output.mp3?AWSAccessKeyId=AKIAJDSGJWM63VQEXHIQ&Expires=1550695990&Signature=dy3RVqDlX%2BlJ0INlDkl0Lm1Rqb4%3D.
    
[http @ 000001fb37b15140] Setting default whitelist 'http,https,tls,rtp,tcp,udp,crypto,httpproxy'
    
[tcp @ 000001fb37b16c80] Original list of addresses:
    
[tcp @ 000001fb37b16c80] Address 52.216.8.203 port 80
    
[tcp @ 000001fb37b16c80] Interleaved list of addresses:
    
[tcp @ 000001fb37b16c80] Address 52.216.8.203 port 80
    
[tcp @ 000001fb37b16c80] Starting connection attempt to 52.216.8.203 port 80
    
[tcp @ 000001fb37b16c80] Successfully connected to 52.216.8.203 port 80
    
[http @ 000001fb37b15140] request: PUT /output.mp3?AWSAccessKeyId=AKIAJDSGJWM63VQEXHIQ&Expires=1550695990&Signature=dy3RVqDlX%2BlJ0INlDkl0Lm1Rqb4%3D HTTP/1.1
    
Transfer-Encoding: chunked
    
User-Agent: Lavf/58.26.101
    
Accept: */*
    
Connection: close
    
Host: landr-distribution-reportsdev-mb.s3.amazonaws.com
    
Icy-MetaData: 1
    
Successfully opened the file.
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (pcm_s32le (native) -> mp3 (libmp3lame))
    
Press [q] to stop, [?] for help
    
cur_dts is invalid (this is harmless if it occurs once at the start per stream)
    
detected 8 logical cores
    
[graph_0_in_0_0 @ 000001fb37b21080] Setting 'time_base' to value '1/48000'
    
[graph_0_in_0_0 @ 000001fb37b21080] Setting 'sample_rate' to value '48000'
    
[graph_0_in_0_0 @ 000001fb37b21080] Setting 'sample_fmt' to value 's32'
    
[graph_0_in_0_0 @ 000001fb37b21080] Setting 'channel_layout' to value '0x3'
    
[graph_0_in_0_0 @ 000001fb37b21080] tb:1/48000 samplefmt:s32 samplerate:48000 chlayout:0x3
    
[format_out_0_0 @ 000001fb37b22cc0] Setting 'sample_fmts' to value 's32p|fltp|s16p'
    
[format_out_0_0 @ 000001fb37b22cc0] Setting 'sample_rates' to value '44100'
    
[format_out_0_0 @ 000001fb37b22cc0] Setting 'channel_layouts' to value '0x3'
    
[format_out_0_0 @ 000001fb37b22cc0] auto-inserting filter 'auto_resampler_0' between the filter 'Parsed_anull_0' and the filter 'format_out_0_0'
    
[AVFilterGraph @ 000001fb37b0d940] query_formats: 4 queried, 6 merged, 3 already done, 0 delayed
    
[auto_resampler_0 @ 000001fb37b251c0] picking s32p out of 3 ref:s32
    
[auto_resampler_0 @ 000001fb37b251c0] [SWR @ 000001fb37b252c0] Using fltp internally between filters
    
[auto_resampler_0 @ 000001fb37b251c0] ch:2 chl:stereo fmt:s32 r:48000Hz -> ch:2 chl:stereo fmt:s32p r:44100Hz
    
Output #0, mp3, to 'https://my-bucket.s3.amazonaws.com/output.mp3?AWSAccessKeyId=AKIAJDSGJWM63VQEXHIQ&Expires=1550695990&Signature=dy3RVqDlX%2BlJ0INlDkl0Lm1Rqb4%3D':
    
  Metadata:
    
    TSSE            : Lavf58.26.101
    
    Stream #0:0, 0, 1/44100: Audio: mp3 (libmp3lame), 44100 Hz, stereo, s32p, delay 1105, 192 kb/s
    
    Metadata:
    
      encoder         : Lavc58.47.100 libmp3lame
    
cur_dts is invalid (this is harmless if it occurs once at the start per stream)
    
    Last message repeated 6 times
    
size=     649kB time=00:00:27.66 bitrate= 192.2kbits/s speed=55.3x    
    
size=    1207kB time=00:00:51.48 bitrate= 192.1kbits/s speed=51.5x    
    
av_interleaved_write_frame(): Unknown error
    
No more output streams to write to, finishing.
    
[libmp3lame @ 000001fb37b147c0] Trying to remove 47 more samples than there are in the queue
    
Error writing trailer of https://my-bucket.s3.amazonaws.com/output.mp3?AWSAccessKeyId=AKIAJDSGJWM63VQEXHIQ&Expires=1550695990&Signature=dy3RVqDlX%2BlJ0INlDkl0Lm1Rqb4%3D: Error number -10054 occurred
    
size=    1251kB time=00:00:53.39 bitrate= 192.0kbits/s speed=51.5x    
    
video:0kB audio:1252kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
    
Input file #0 (C:\input.wav):
    
  Input stream #0:0 (audio): 5014 packets read (20537344 bytes); 5014 frames decoded (2567168 samples); 
    
  Total: 5014 packets (20537344 bytes) demuxed
    
Output file #0 (https://my-bucket.s3.amazonaws.com/output.mp3?AWSAccessKeyId=AKIAJDSGJWM63VQEXHIQ&Expires=1550695990&Signature=dy3RVqDlX%2BlJ0INlDkl0Lm1Rqb4%3D):
    
  Output stream #0:0 (audio): 2047 frames encoded (2358144 samples); 2045 packets muxed (1282089 bytes); 
    
  Total: 2045 packets (1282089 bytes) muxed
    
5014 frames successfully decoded, 0 decoding errors
    
[AVIOContext @ 000001fb37b1f440] Statistics: 0 seeks, 2046 writeouts
    
[http @ 000001fb37b15140] URL read error:  -10054
    
[AVIOContext @ 000001fb37ac4400] Statistics: 20611126 bytes read, 1 seeks
    
Conversion failed!

    So it looks like it is able to connect to my S3 pre-signed url but I still have the Error writing trailer error coupled with a URL read error.

  • FFmpeg : inconsistent frame counts

    17 février 2019, par murrdpirate

    I have a 40 second mp4 recorded at 60 fps. I’m trying to get the exact number of frames in the mp4 (rather than assuming 40 * 60 = 2400). I found two methods the count the number of frames :

    1. ffmpeg -i test6.mp4 -f null - result = 2371
    2. ffmpeg -i test6.mp4 test6/out-%04d.jpg result = 2401

    The first just prints the total number, and the latter extracts each frame as a jpg. Why do these produce different results ?

  • truehd : add hand-scheduled ARM asm version of mlp_filter_channel.

    20 mars 2014, par Ben Avison
    truehd : add hand-scheduled ARM asm version of mlp_filter_channel.

    Profiling results for overall audio decode and the mlp_filter_channel(_arm)
    
function in particular are as follows :
    

                  Before          After
    
              Mean   StdDev   Mean   StdDev  Confidence  Change
    
6:2 total     380.4  22.0     370.8  17.0    87.4%       +2.6%  (insignificant)
    
6:2 function  60.7   7.2      36.6   8.1     100.0%      +65.8%
    
8:2 total     357.0  17.5     343.2  19.0    97.8%       +4.0%  (insignificant)
    
8:2 function  60.3   8.8      37.3   3.8     100.0%      +61.8%
    
6:6 total     717.2  23.2     658.4  15.7    100.0%      +8.9%
    
6:6 function  140.4  12.9     81.5   9.2     100.0%      +72.4%
    
8:8 total     981.9  16.2     896.2  24.5    100.0%      +9.6%
    
8:8 function  193.4  15.0     103.3  11.5    100.0%      +87.2%
    

    Experiments with adding preload instructions to this function yielded no
    
useful benefit, so these have not been included.
    

    The assembly version has also been tested with a fuzz tester to ensure that
    
any combinations of inputs not exercised by my available test streams still
    
generate mathematically identical results to the C version.
    

    Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
    • [DH] libavcodec/arm/Makefile
    • [DH] libavcodec/arm/mlpdsp_arm.S
    • [DH] libavcodec/arm/mlpdsp_init_arm.c
    • [DH] libavcodec/mlpdsp.c
    • [DH] libavcodec/mlpdsp.h

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