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ED-ME-5 1-DVD
11 octobre 2011, par
Mis à jour : Octobre 2011
Langue : English
Type : Audio
Autres articles (57)
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Publier sur MédiaSpip
13 juin 2013Puis-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 -
HTML5 audio and video support
13 avril 2011, parMediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
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De l’upload à la vidéo finale [version standalone]
31 janvier 2010, parLe chemin d’un document audio ou vidéo dans SPIPMotion est divisé en trois étapes distinctes.
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Sur d’autres sites (8188)
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Add multiple subtitles to video with ffmpeg-python
26 mars 2021, par ScottBot10I am trying to add multiple subtitles (not burned) to a video file with ffmpeg-python. I have this ffmpeg command :


ffmpeg -i input.mp4 -f srt \
-i "subs/en/en_srt_sub.srt" \
-i "subs/fr/fr_srt_sub" \
-map 0:0 -map 0:1 -map 1:0 -map 2:0 \
-c:v copy -c:a copy \
-c:s srt -c:s srt \
-metadata:s:s:0 language=en -metadata:s:s:0 title=English \
-metadata:s:s:1 language=fr -metadata:s:s:1 title=French \
output.mkv



Is there a way to do this with the ffmpeg-python module or do I just have to use string formatting and subprocess.


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Can't figure out stream mapping/commands
11 avril 2020, par Jessie WilsonHelp with stream mapping/commands



I'm fairly new to FFMPEG. I've always encoded with GUI's. However, I've been setting up batch files to make some things easier for me !



I'm taking a source file that is1080p video



dts 5.1 1500 kb stream



with english subs.



I'm wanting to copy the video and take the DTS track, convert to AAC 2.0 at 192k and make a secondary audio track ac3 5.1 640k.



This is the command i'm trying to use but no matter how many times I run it the audio channels and or bitrates get mixed up.



for %%a in ("*.mkv") do ffmpeg -i "%%a" ^
-map 0:0 -map 0:1 -map 0:1 -map 0:2 ^
-c:v:0 copy ^
-c:a:0 aac -ac:0 2 -b:a:0 192k ^
-c:a:1 ac3 -ac:1 6 -b:a:1 640k ^
-c:s:0 copy ^
"\TEST%%~na.mkv"
pause




Any help would be appreciated !


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FFMPEG - rewarp MPEGDash to MP4 changes audio bitrate mode
30 juin 2022, par Matthieu DucorpsI'm rewrapping some MPEGDash to MP4 wrapper and some files are outputed with variable audio bitrate where others with constant bitrate,and both sources looks exactly the same.


For reference :


I'm using FFMPEG 5.0 for the rewrapping


ffmpeg version 5.0-full_build-www.gyan.dev Copyright (c) 2000-2022 the FFmpeg developers
 built with gcc 11.2.0 (Rev5, Built by MSYS2 project)
 configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
 libavutil 57. 17.100 / 57. 17.100
 libavcodec 59. 18.100 / 59. 18.100
 libavformat 59. 16.100 / 59. 16.100
 libavdevice 59. 4.100 / 59. 4.100
 libavfilter 8. 24.100 / 8. 24.100
 libswscale 6. 4.100 / 6. 4.100
 libswresample 4. 3.100 / 4. 3.100
 libpostproc 56. 3.100 / 56. 3.100



And MediaInfo 22.09 to check the medias.




I'm using this command to rewrap the media :


ffmpeg.exe -y -i MPEGDash.mpd -map 0:v -map 0:a -c copy OutFile.mp4



This source MPEGDASH with constant audio bitrate


General
Complete name : \\Constant\PROXY\A0002_30sec\MPEGDash_A0002_30sec.mpd
Format : DASH MPD
File size : 4.14 MiB
Duration : 30 s 80 ms
Overall bit rate mode : Constant
Overall bit rate : 1 154 kb/s

Video
ID : 0-1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L3.1
Format settings : CABAC / 2 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 2 frames
Format settings, GOP : M=3, N=30
Muxing mode : dash
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 30 s 30 ms
Bit rate mode : Constant
Bit rate : 640 kb/s
Width : 640 pixels
Height : 360 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 29.970 (30000/1001) FPS
Standard : NTSC
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.093
Stream size : 2.28 MiB (55%)
Language : English
Encoded date : UTC 2022-06-30 08:20:16
Tagged date : UTC 2022-06-30 08:20:16
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
Source : V0_360p_640000/V0_360p_640000_init.mp4
Codec configuration box : avcC

Audio #1
ID : 160-1
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Muxing mode : dash
Codec ID : mp4a-40-2
Duration : 30 s 80 ms
Bit rate mode : Constant
Bit rate : 128 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 460 KiB (11%)
Language : English
Encoded date : UTC 2022-06-30 08:20:16
Tagged date : UTC 2022-06-30 08:20:16
Source : A0_48000_128000/A0_48000_128000_init.mp4

Audio #2
ID : 161-1
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Muxing mode : dash
Codec ID : mp4a-40-2
Duration : 30 s 80 ms
Bit rate mode : Constant
Bit rate : 128 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 460 KiB (11%)
Language : English
Encoded date : UTC 2022-06-30 08:20:16
Tagged date : UTC 2022-06-30 08:20:16
Source : A1_48000_128000/A1_48000_128000_init.mp4

Audio #3
ID : 162-1
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Muxing mode : dash
Codec ID : mp4a-40-2
Duration : 30 s 80 ms
Bit rate mode : Constant
Bit rate : 128 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 460 KiB (11%)
Language : English
Encoded date : UTC 2022-06-30 08:20:16
Tagged date : UTC 2022-06-30 08:20:16
Source : A2_48000_128000/A2_48000_128000_init.mp4

Audio #4
ID : 163-1
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Muxing mode : dash
Codec ID : mp4a-40-2
Duration : 30 s 80 ms
Bit rate mode : Constant
Bit rate : 128 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 460 KiB (11%)
Language : English
Encoded date : UTC 2022-06-30 08:20:16
Tagged date : UTC 2022-06-30 08:20:16
Source : A3_48000_128000/A3_48000_128000_init.mp4



Has the expected output with constant audio bitrate on the MP4


General
Complete name : \\Constant\PROXY\A0002_30sec\A0002_30sec.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom (isom/iso2/avc1/mp41)
File size : 4.13 MiB
Duration : 30 s 96 ms
Overall bit rate mode : Constant
Overall bit rate : 1 152 kb/s
Movie name : MPEGDash_A0002_30sec.mpd
Writing application : Lavf59.16.100

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L3.1
Format settings : CABAC / 2 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 2 frames
Format settings, GOP : M=3, N=30
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 30 s 96 ms
Source duration : 29 s 997 ms
Bit rate mode : Constant
Bit rate : 590 kb/s
Nominal bit rate : 640 kb/s
Maximum bit rate : 636 kb/s
Width : 640 pixels
Height : 360 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 29.970 (30000/1001) FPS
Standard : NTSC
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.085
Stream size : 2.12 MiB (51%)
Source stream size : 2.28 MiB (55%)
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
mdhd_Duration : 30030
Codec configuration box : avcC

Audio #1
ID : 2
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : mp4a-40-2
Duration : 30 s 80 ms
Bit rate mode : Constant
Bit rate : 125 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 460 KiB (11%)
Language : English
Default : Yes
Alternate group : 1

Audio #2
ID : 3
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : mp4a-40-2
Duration : 30 s 80 ms
Bit rate mode : Constant
Bit rate : 125 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 460 KiB (11%)
Language : English
Default : Yes
Alternate group : 2

Audio #3
ID : 4
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : mp4a-40-2
Duration : 30 s 80 ms
Bit rate mode : Constant
Bit rate : 125 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 460 KiB (11%)
Language : English
Default : Yes
Alternate group : 3

Audio #4
ID : 5
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : mp4a-40-2
Duration : 30 s 80 ms
Bit rate mode : Constant
Bit rate : 125 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 460 KiB (11%)
Language : English
Default : Yes
Alternate group : 4



But this source MPEGDASH which has the same characteristics :


General
Complete name : \\Variable\PROXY\A0005_30sec\MPEGDash_A0005_30sec.mpd
Format : DASH MPD
File size : 4.15 MiB
Duration : 30 s 80 ms
Overall bit rate mode : Constant
Overall bit rate : 1 157 kb/s

Video
ID : 0-1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L3.1
Format settings : CABAC / 2 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 2 frames
Format settings, GOP : M=3, N=30
Muxing mode : dash
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 30 s 30 ms
Bit rate mode : Constant
Bit rate : 640 kb/s
Width : 640 pixels
Height : 360 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 29.970 (30000/1001) FPS
Standard : NTSC
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.093
Stream size : 2.29 MiB (55%)
Language : English
Encoded date : UTC 2022-06-30 08:24:03
Tagged date : UTC 2022-06-30 08:24:03
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
Source : V0_360p_640000/V0_360p_640000_init.mp4
Codec configuration box : avcC

Audio #1
ID : 160-1
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Muxing mode : dash
Codec ID : mp4a-40-2
Duration : 30 s 80 ms
Bit rate mode : Constant
Bit rate : 128 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 461 KiB (11%)
Language : English
Encoded date : UTC 2022-06-30 08:24:03
Tagged date : UTC 2022-06-30 08:24:03
Source : A0_48000_128000/A0_48000_128000_init.mp4

Audio #2
ID : 161-1
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Muxing mode : dash
Codec ID : mp4a-40-2
Duration : 30 s 80 ms
Bit rate mode : Constant
Bit rate : 128 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 460 KiB (11%)
Language : English
Encoded date : UTC 2022-06-30 08:24:03
Tagged date : UTC 2022-06-30 08:24:03
Source : A1_48000_128000/A1_48000_128000_init.mp4

Audio #3
ID : 162-1
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Muxing mode : dash
Codec ID : mp4a-40-2
Duration : 30 s 80 ms
Bit rate mode : Constant
Bit rate : 128 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 460 KiB (11%)
Language : English
Encoded date : UTC 2022-06-30 08:24:03
Tagged date : UTC 2022-06-30 08:24:03
Source : A2_48000_128000/A2_48000_128000_init.mp4

Audio #4
ID : 163-1
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Muxing mode : dash
Codec ID : mp4a-40-2
Duration : 30 s 80 ms
Bit rate mode : Constant
Bit rate : 128 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 460 KiB (11%)
Language : English
Encoded date : UTC 2022-06-30 08:24:03
Tagged date : UTC 2022-06-30 08:24:03
Source : A3_48000_128000/A3_48000_128000_init.mp4



Has this output where the MP4 have the first audio with variable bitrate


General
Complete name : \\Variable\PROXY\A0005_30sec\A0005_30sec.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom (isom/iso2/avc1/mp41)
File size : 4.14 MiB
Duration : 30 s 96 ms
Overall bit rate mode : Variable
Overall bit rate : 1 155 kb/s
Movie name : MPEGDash_A0005_30sec.mpd
Writing application : Lavf59.16.100

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L3.1
Format settings : CABAC / 2 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 2 frames
Format settings, GOP : M=3, N=30
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 30 s 96 ms
Source duration : 29 s 997 ms
Bit rate mode : Constant
Bit rate : 593 kb/s
Nominal bit rate : 640 kb/s
Maximum bit rate : 640 kb/s
Width : 640 pixels
Height : 360 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 29.970 (30000/1001) FPS
Standard : NTSC
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.086
Stream size : 2.13 MiB (51%)
Source stream size : 2.29 MiB (55%)
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
mdhd_Duration : 30030
Codec configuration box : avcC

Audio #1
ID : 2
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : mp4a-40-2
Duration : 30 s 80 ms
Bit rate mode : Variable
Bit rate : 126 kb/s
Maximum bit rate : 128 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 461 KiB (11%)
Language : English
Default : Yes
Alternate group : 1

Audio #2
ID : 3
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : mp4a-40-2
Duration : 30 s 80 ms
Bit rate mode : Constant
Bit rate : 125 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 460 KiB (11%)
Language : English
Default : Yes
Alternate group : 2

Audio #3
ID : 4
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : mp4a-40-2
Duration : 30 s 80 ms
Bit rate mode : Constant
Bit rate : 125 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 460 KiB (11%)
Language : English
Default : Yes
Alternate group : 3

Audio #4
ID : 5
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : mp4a-40-2
Duration : 30 s 80 ms
Bit rate mode : Constant
Bit rate : 125 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 460 KiB (11%)
Language : English
Default : Yes
Alternate group : 4



Maybe I'm missing something but,I don't see what.