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Médias (91)

Autres articles (66)

  • Contribute to a better visual interface

    13 avril 2011

    MediaSPIP is based on a system of themes and templates. Templates define the placement of information on the page, and can be adapted to a wide range of uses. Themes define the overall graphic appearance of the site.
    Anyone can submit a new graphic theme or template and make it available to the MediaSPIP community.

  • Les formats acceptés

    28 janvier 2010, par

    Les commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
    ffmpeg -codecs ffmpeg -formats
    Les format videos acceptés en entrée
    Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
    Les formats vidéos de sortie possibles
    Dans un premier temps on (...)

  • Support de tous types de médias

    10 avril 2011

    Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)

Sur d’autres sites (6056)

  • Why the audio of my mp4 file is going out of async

    16 juillet 2018, par Dop

    I am having a problem converting a wmv file to mp4. I am using x264.exe this command to get the video stream

    x264 --output temporal.264 --fps 25 --preset slow --bitrate 2048 --vbv-maxrate 2048 --vbv-bufsize 9600 --min-keyint 48 --keyint 48 --scenecut 0 --no-scenecut --pass 1 --video-filter "resize:width=640,height=480" Original.wmv

    Then I use ffmpeg.exe to extract the audio stream with this line :

    ffmpeg -i .wmv -acodec libfdk_aac -b:a 32000 temporal.aac

    finally I use MP4Box to merges each stream with this line :

    MP4Box -add temporal.264 Final.mp4
    MP4Box -add temporal.aac Final.mp4

    The problem is that the final.mp4 audio is out of sync. It starts good but with time it goes out of sync with time.

    I run this command :

    MP4Box -info 010004470063PE-10022017083824-2_MultiMedia--1.mp4

    and I discover that the estimated time of both streams are different :

    output of command

    * Movie Info *
           Timescale 600 - 2 tracks
           Computed Duration 01:00:03.643 - Indicated Duration 01:00:03.643
           Fragmented File: no
           File suitable for progressive download (moov before mdat)
           File Brand isom - version 1
                   Compatible brands: isom avc1
           Created: GMT Wed Jun 27 16:31:44 2018
           Modified: GMT Wed Jun 27 16:31:44 2018
    File has root IOD (9 bytes)
    Scene PL 0xff - Graphics PL 0xff - OD PL 0xff
    Visual PL: AVC/H264 Profile (0x7f)
    Audio PL: AAC Profile @ Level 2 (0x29)
    No streams included in root OD
    Track # 1 Info - TrackID 1 - TimeScale 25000
    Media Duration 00:59:57.520 - Indicated Duration 00:59:57.520
    Track has 1 edit lists: track duration is 00:59:57.320
    Media Info: Language "Undetermined (und)" - Type "vide:avc1" - 89938 samples
    Visual Track layout: x=0 y=0 width=640 height=480
    MPEG-4 Config: Visual Stream - ObjectTypeIndication 0x21
    AVC/H264 Video - Visual Size 640 x 480
           AVC Info: 1 SPS - 1 PPS - Profile Main @ Level 3
           NAL Unit length bits: 32
           Chroma format YUV 4:2:0 - Luma bit depth 8 - chroma bit depth 8
           SPS#1 hash: 41EE779BEF2AA71A7131EAFD3C77C7E3BC95FD8E
           PPS#1 hash: 086E1D72A40A0E8CF35D102F34A9DF6CD44D6CEF
    Self-synchronized
           RFC6381 Codec Parameters: avc1.4D401E
           Average GOP length: 250 samples
    Track # 2 Info - TrackID 2 - TimeScale 44100
    Media Duration 01:00:03.644 - Indicated Duration 01:00:03.644
    Media Info: Language "Undetermined (und)" - Type "soun:mp4a" - 155196 samples
    MPEG-4 Config: Audio Stream - ObjectTypeIndication 0x40
    MPEG-4 Audio AAC LC - 2 Channel(s) - SampleRate 44100
    Synchronized on stream 1
           RFC6381 Codec Parameters: mp4a.40.2
           All samples are sync

    I am not shore why this is happening, becar the original wmv is perfectly synchronize. Any help ?

  • Why the audio of my mp4 file is going out of async

    16 juillet 2018, par Dop

    I am having a problem converting a wmv file to mp4. I am using x264.exe this command to get the video stream

    x264 --output temporal.264 --fps 25 --preset slow --bitrate 2048 --vbv-maxrate 2048 --vbv-bufsize 9600 --min-keyint 48 --keyint 48 --scenecut 0 --no-scenecut --pass 1 --video-filter "resize:width=640,height=480" Original.wmv

    Then I use ffmpeg.exe to extract the audio stream with this line :

    ffmpeg -i .wmv -acodec libfdk_aac -b:a 32000 temporal.aac

    finally I use MP4Box to merges each stream with this line :

    MP4Box -add temporal.264 Final.mp4
    MP4Box -add temporal.aac Final.mp4

    The problem is that the final.mp4 audio is out of sync. It starts good but with time it goes out of sync with time.

    I run this command :

    MP4Box -info 010004470063PE-10022017083824-2_MultiMedia--1.mp4

    and I discover that the estimated time of both streams are different :

    output of command

    * Movie Info *
           Timescale 600 - 2 tracks
           Computed Duration 01:00:03.643 - Indicated Duration 01:00:03.643
           Fragmented File: no
           File suitable for progressive download (moov before mdat)
           File Brand isom - version 1
                   Compatible brands: isom avc1
           Created: GMT Wed Jun 27 16:31:44 2018
           Modified: GMT Wed Jun 27 16:31:44 2018
    File has root IOD (9 bytes)
    Scene PL 0xff - Graphics PL 0xff - OD PL 0xff
    Visual PL: AVC/H264 Profile (0x7f)
    Audio PL: AAC Profile @ Level 2 (0x29)
    No streams included in root OD
    Track # 1 Info - TrackID 1 - TimeScale 25000
    Media Duration 00:59:57.520 - Indicated Duration 00:59:57.520
    Track has 1 edit lists: track duration is 00:59:57.320
    Media Info: Language "Undetermined (und)" - Type "vide:avc1" - 89938 samples
    Visual Track layout: x=0 y=0 width=640 height=480
    MPEG-4 Config: Visual Stream - ObjectTypeIndication 0x21
    AVC/H264 Video - Visual Size 640 x 480
           AVC Info: 1 SPS - 1 PPS - Profile Main @ Level 3
           NAL Unit length bits: 32
           Chroma format YUV 4:2:0 - Luma bit depth 8 - chroma bit depth 8
           SPS#1 hash: 41EE779BEF2AA71A7131EAFD3C77C7E3BC95FD8E
           PPS#1 hash: 086E1D72A40A0E8CF35D102F34A9DF6CD44D6CEF
    Self-synchronized
           RFC6381 Codec Parameters: avc1.4D401E
           Average GOP length: 250 samples
    Track # 2 Info - TrackID 2 - TimeScale 44100
    Media Duration 01:00:03.644 - Indicated Duration 01:00:03.644
    Media Info: Language "Undetermined (und)" - Type "soun:mp4a" - 155196 samples
    MPEG-4 Config: Audio Stream - ObjectTypeIndication 0x40
    MPEG-4 Audio AAC LC - 2 Channel(s) - SampleRate 44100
    Synchronized on stream 1
           RFC6381 Codec Parameters: mp4a.40.2
           All samples are sync

    I am not shore why this is happening, becar the original wmv is perfectly synchronize. Any help ?

  • I cant give names to subtitle tracks with ffmpeg

    11 mai 2023, par Keles

    Im using this command to add 2 audio tracks (mixed with original audio) and 2 subtitles tracks to the original video :

    


    


    ffmpeg -i input_video.mp4 -i audio_track_1.wav -i audio_track_2.wav -i
srt_file_es.srt -i srt_file_en.srt -filter_complex
"[0:a][1:a]amerge=inputs=2[a1] ;[0:a][2:a]amerge=inputs=2[a2]" -map 0:v
-map "[a1]" -metadata:s:a:0 language=spa -metadata:s:a:0 title="Spanish" -map "[a2]" -metadata:s:a:1 language=eng
-metadata:s:a:1 title="English" -c:v copy -c:a aac -ac 2 -b:a 96k -c:s mov_text -metadata:s:s:0 language=spa -metadata:s:s:0 title="Spanish"
-metadata:s:s:1 language=eng -metadata:s:s:1 title="English" output_video.mp4

    


    


    Everything works fine but the subtitles names are "Track 1" and "Track 2". The following part is not working :

    


    


    metadata:s:s:0 title=

    


    


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