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  • Les vidéos

    21 avril 2011, par

    Comme les documents de type "audio", Mediaspip affiche dans la mesure du possible les vidéos grâce à la balise html5 .
    Un des inconvénients de cette balise est qu’elle n’est pas reconnue correctement par certains navigateurs (Internet Explorer pour ne pas le nommer) et que chaque navigateur ne gère en natif que certains formats de vidéos.
    Son avantage principal quant à lui est de bénéficier de la prise en charge native de vidéos dans les navigateur et donc de se passer de l’utilisation de Flash et (...)

  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

  • Publier sur MédiaSpip

    13 juin 2013

    Puis-je poster des contenus à partir d’une tablette Ipad ?
    Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir

Sur d’autres sites (12652)

  • DivX audio not decoded on DVD player

    8 août 2019, par Shaul

    Moved to https://video.stackexchange.com/questions/28225/divx-audio-not-decoded-on-dvd-player

    I am converting MP4 movie into AVI/DivX format. I plan to copy the AVI to a USB memory stick and plug it into my DVD player. My player is a Pioneer 3052 that supports USB input.

    I convert the file using ffmpeg without error messages. The output file is played correctly on my computer, including audio. I use "Movies & TVs" and "DIVX Player" for testing.

    When I try running it on my Pioneer the video and the subtitles are ok but there’s no audio. I know that there’s no issues with the hardware because videos converted with "FreeMake Video converter" do play audio.

    My command line is :

    .\ffmpeg.exe  "-i INFILE -c:v mpeg4 -vtag xvid -qscale:v 3 -c:a libmp3lame  -vf "scale=720:576:force_original_aspect_ratio=decrease,pad=720:576:(ow-iw)/2:(oh-ih)/2","subtitles=f=SRTFILE:charenc=ISO-8859-8:force_style=PrimaryColour=&H0000FFFF,Fontsize=16" OUTFILE

    I also experimented with -b:a 192k, -b:a 96k and -qscale:a 4 all leading to the same results.

    I wander what else to try.
    I add the report produced by ffprobe (for the output file) :

    [STREAM]
    
index=0
    
codec_name=mpeg4
    
codec_long_name=MPEG-4 part 2
    
profile=Simple Profile
    
codec_type=video
    
codec_time_base=1001/24000
    
codec_tag_string=xvid
    
codec_tag=0x64697678
    
width=720
    
height=576
    
coded_width=720
    
coded_height=576
    
has_b_frames=0
    
sample_aspect_ratio=1:1
    
display_aspect_ratio=5:4
    
pix_fmt=yuv420p
    
level=1
    
color_range=unknown
    
color_space=unknown
    
color_transfer=unknown
    
color_primaries=unknown
    
chroma_location=left
    
field_order=unknown
    
timecode=N/A
    
refs=1
    
quarter_sample=false
    
divx_packed=false
    
id=N/A
    
r_frame_rate=24000/1001
    
avg_frame_rate=24000/1001
    
time_base=1001/24000
    
start_pts=0
    
start_time=0.000000
    
duration_ts=163203
    
duration=6806.925125
    
bit_rate=1243432
    
max_bit_rate=N/A
    
bits_per_raw_sample=N/A
    
nb_frames=163203
    
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
    
DISPOSITION:timed_thumbnails=0
    
[/STREAM]
    
[STREAM]
    
index=1
    
codec_name=mp3
    
codec_long_name=MP3 (MPEG audio layer 3)
    
profile=unknown
    
codec_type=audio
    
codec_time_base=1/48000
    
codec_tag_string=U[0][0][0]
    
codec_tag=0x0055
    
sample_fmt=fltp
    
sample_rate=48000
    
channels=2
    
channel_layout=stereo
    
bits_per_sample=0
    
id=N/A
    
r_frame_rate=0/0
    
avg_frame_rate=0/0
    
time_base=3/125
    
start_pts=0
    
start_time=0.000000
    
duration_ts=283622
    
duration=6806.928000
    
bit_rate=192000
    
max_bit_rate=N/A
    
bits_per_raw_sample=N/A
    
nb_frames=283622
    
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
    
DISPOSITION:timed_thumbnails=0
    
[/STREAM]
    
[FORMAT]
    
filename=H:\Movies\Memento.avi
    
nb_streams=2
    
nb_programs=0
    
format_name=avi
    
format_long_name=AVI (Audio Video Interleaved)
    
start_time=0.000000
    
duration=6806.928000
    
size=1235006020
    
bit_rate=1451469
    
probe_score=100
    
TAG:encoder=Lavf58.20.100
    
[/FORMAT]

    EDIT :
    I add an example of a movie that is OK on this DVD player :

    [STREAM]
    
index=0
    
codec_name=mpeg4
    
codec_long_name=MPEG-4 part 2
    
profile=Advanced Simple Profile
    
codec_type=video
    
codec_time_base=1001/24000
    
codec_tag_string=XVID
    
codec_tag=0x44495658
    
width=576
    
height=432
    
coded_width=576
    
coded_height=432
    
has_b_frames=1
    
sample_aspect_ratio=1:1
    
display_aspect_ratio=4:3
    
pix_fmt=yuv420p
    
level=5
    
color_range=unknown
    
color_space=unknown
    
color_transfer=unknown
    
color_primaries=unknown
    
chroma_location=left
    
field_order=unknown
    
timecode=N/A
    
refs=1
    
quarter_sample=false
    
divx_packed=false
    
id=N/A
    
r_frame_rate=24000/1001
    
avg_frame_rate=24000/1001
    
time_base=1001/24000
    
start_pts=0
    
start_time=0.000000
    
duration_ts=134521
    
duration=5610.646708
    
bit_rate=943851
    
max_bit_rate=N/A
    
bits_per_raw_sample=N/A
    
nb_frames=134521
    
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
    
DISPOSITION:timed_thumbnails=0
    
[/STREAM]
    
[STREAM]
    
index=1
    
codec_name=mp3
    
codec_long_name=MP3 (MPEG audio layer 3)
    
profile=unknown
    
codec_type=audio
    
codec_time_base=1/48000
    
codec_tag_string=U[0][0][0]
    
codec_tag=0x0055
    
sample_fmt=fltp
    
sample_rate=48000
    
channels=2
    
channel_layout=stereo
    
bits_per_sample=0
    
id=N/A
    
r_frame_rate=0/0
    
avg_frame_rate=0/0
    
time_base=3/125
    
start_pts=0
    
start_time=0.000000
    
duration_ts=233777
    
duration=5610.648000
    
bit_rate=91176
    
max_bit_rate=N/A
    
bits_per_raw_sample=N/A
    
nb_frames=233777
    
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
    
DISPOSITION:timed_thumbnails=0
    
[/STREAM]
    
[FORMAT]
    
filename=H:\Honey.I.Shrunk.The.Kids.1989.FS.DVDRip.XViD.iNT-EwDp.HebSub.www.Moridim.tv.avi
    
nb_streams=2
    
nb_programs=0
    
format_name=avi
    
format_long_name=AVI (Audio Video Interleaved)
    
start_time=0.000000
    
duration=5610.648000
    
size=734808064
    
bit_rate=1047733
    
probe_score=100
    
TAG:encoder=VirtualDubMod 1.5.10.2 (build 2540/release)
    
[/FORMAT]

  • Error using PyDub : pcm_s8 codec not supported in WAVE format

    29 mai 2020, par thf9527

    Tried to read in a WAVE file.

    



    Pydub has been working perfectly for the past few months, until I have encountered a specific WAVE file format where I could not import into Python (but it has no issue while playing on windows media player and other players).

    



    from pydub import AudioSegment

file = r"NICE_Dev.wav"
print(utils.mediainfo(file))
try:
    data = AudioSegment.from_file(file)

except Exception as e:
    print(e)


    



    The error message is :

    



    ffmpeg version 4.1.3 Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 8.3.1 (GCC) 20190414
  configuration: --disable-static --enable-shared --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --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
  libavutil      56. 22.100 / 56. 22.100
  libavcodec     58. 35.100 / 58. 35.100
  libavformat    58. 20.100 / 58. 20.100
  libavdevice    58.  5.100 / 58.  5.100
  libavfilter     7. 40.101 /  7. 40.101
  libswscale      5.  3.100 /  5.  3.100
  libswresample   3.  3.100 /  3.  3.100
  libpostproc    55.  3.100 / 55.  3.100
Guessed Channel Layout for Input Stream #0.0 : mono
Input #0, wav, from 'NICE_Dev.wav':
  Duration: 00:25:55.39, bitrate: 64 kb/s
    Stream #0:0: Audio: pcm_mulaw ([7][0][0][0] / 0x0007), 8000 Hz, mono, s16, 64 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (pcm_mulaw (native) -> pcm_s8 (native))
Press [q] to stop, [?] for help
[wav @ 00000265db3c1bc0] pcm_s8 codec not supported in WAVE format
Could not write header for output file #0 (incorrect codec parameters ?): Function not implemented
Error initializing output stream 0:0 -- 
Conversion failed!


    



    I believe it is due to the encoding pcm_s8, but I could not figure out how to solve this issue, the details of the audio file using "utils.mediainfo" is :

    



    {'index': '0', 'codec_name': 'pcm_mulaw', 'codec_long_name': 'PCM mu-law / 
G.711 mu-law', 'profile': 'unknown', 'codec_type': 'audio', 'codec_time_base': 
'1/8000', 'codec_tag_string': '[7][0][0][0]', 'codec_tag': '0x0007', 
'sample_fmt': 's16', 'sample_rate': '8000', 'channels': '1', 'channel_layout': 
'unknown', 'bits_per_sample': '8', 'id': 'N/A', 'r_frame_rate': '0/0', 
'avg_frame_rate': '0/0', 'time_base': '1/8000', 'start_pts': 'N/A', 
'start_time': 'N/A', 'duration_ts': '12443128', 'duration': '1555.391000', 
'bit_rate': '64000', 'max_bit_rate': 'N/A', 'bits_per_raw_sample': 'N/A', 
'nb_frames': 'N/A', 'nb_read_frames': 'N/A', 'nb_read_packets': 'N/A', 
'DISPOSITION': {'default': '0', 'dub': '0', 'original': '0', 'comment': '0', 
'lyrics': '0', 'karaoke': '0', 'forced': '0', 'hearing_impaired': '0', 
'visual_impaired': '0', 'clean_effects': '0', 'attached_pic': '0', 
'timed_thumbnails': '0'}, 'filename': 'NICE_Dev.wav', 'nb_streams': '1', 
'nb_programs': '0', 'format_name': 'wav', 'format_long_name': 'WAV / WAVE 
(Waveform Audio)', 'size': '12443174', 'probe_score': '99'}


    


  • How to read the timecode from a DPX file via Python

    20 janvier 2020, par Mike McReynolds

    As part of a larger script, I need to be able to read the timecode off of a DPX file. I have ffmpeg and ffprobe, but I’m a beginner when it comes to using those programs.

    For MOV files, I was able to cobble this together :

    def GetStartingTimecodeFromMOV(Filename):
    
    cmd = "ffprobe -v quiet -print_format json -show_streams -show_format"
    
    args = shlex.split(cmd)
    
    args.append(Filename)
    
    String = subprocess.check_output(args).decode('utf-8')
    
    for Line in String.split("\n"):
    
        if Line.count("timecode"):
    
            Timecode = Line.split("\"")[3]
    
            return Timecode

    ...but their must be some subtle difference in the metadata between a MOV file and a DPX. Any help would be appreciated.

    If I try....

    ffprobe -v quiet -show_streams -show_format
    "/Render/MyFile/MyFile.0001016.dpx"

    ...then I get a lot of useful info, including resolution and FPS, but not timecode (at least for a DPX file)

    [STREAM]
    
index=0
    
codec_name=dpx
    
codec_long_name=DPX (Digital Picture Exchange) image
    
profile=unknown
    
codec_type=video
    
codec_time_base=0/1
    
codec_tag_string=[0][0][0][0]
    
codec_tag=0x0000
    
width=1920
    
height=1600
    
coded_width=1920
    
coded_height=1600
    
has_b_frames=0
    
sample_aspect_ratio=1:1
    
display_aspect_ratio=6:5
    
pix_fmt=rgb48be
    
level=-99
    
color_range=unknown
    
color_space=unknown
    
color_transfer=unknown
    
color_primaries=unknown
    
chroma_location=unspecified
    
field_order=unknown
    
timecode=N/A
    
refs=1
    
id=N/A
    
r_frame_rate=25/1
    
avg_frame_rate=0/0
    
time_base=1/25
    
start_pts=N/A
    
start_time=N/A
    
duration_ts=N/A
    
duration=N/A
    
bit_rate=N/A
    
max_bit_rate=N/A
    
bits_per_raw_sample=16
    
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
    
DISPOSITION:timed_thumbnails=0
    
[/STREAM]
    
[FORMAT]
    
filename=/Render/MyFile/MyFile.0001016.dpx
    
nb_streams=1
    
nb_programs=0
    
format_name=dpx_pipe
    
format_long_name=piped dpx sequence
    
start_time=N/A
    
duration=N/A
    
size=18440192
    
bit_rate=N/A
    
probe_score=51
    
[/FORMAT]

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