pyguymer3.media.MPLS¶
This sub-module is a native Python implementation of a parser for Blu-ray MPLS files.
Notes
It has used an excellent MPLS Wiki with a little help from a WikiBook too. This project was started because, as of February 2018, ffprobe v3.4 doesn’t return the language information for the audio streams in a Blu-ray playlist.
For example, running
ffprobe -probesize 1G -analyzeduration 1800M -playlist 820 bluray:/path/to/br
yields:
ffprobe version 3.4 Copyright (c) 2007-2017 the FFmpeg developers
built with FreeBSD clang version 4.0.0 (tags/RELEASE_400/final 297347) (based on LLVM 4.0.0)
configuration: --prefix=/usr/local --mandir=/usr/local/man --datadir=/usr/local/share/ffmpeg --pkgconfigdir=/usr/local/libdata/pkgconfig --enable-shared --enable-pic --enable-gpl --enable-postproc --enable-avfilter --enable-avresample --enable-pthreads --cc=cc --disable-alsa --disable-libopencore-amrnb --disable-libopencore-amrwb --enable-libass --disable-libbs2b --disable-libcaca --disable-libcdio --disable-libcelt --disable-chromaprint --disable-libdc1394 --disable-debug --disable-htmlpages --disable-libdrm --enable-libfdk-aac --disable-ffserver --disable-libflite --enable-fontconfig --enable-libfreetype --enable-frei0r --disable-libfribidi --disable-libgme --disable-libgsm --enable-iconv --disable-libilbc --disable-jack --disable-libkvazaar --disable-ladspa --enable-libmp3lame --enable-libbluray --disable-librsvg --disable-libxml2 --enable-mmx --disable-libmodplug --disable-openal --disable-opencl --enable-libopencv --disable-opengl --disable-libopenh264 --disable-libopenjpeg --enable-optimizations --disable-libopus --disable-libpulse --enable-runtime-cpudetect --disable-librubberband --disable-sdl2 --disable-libsmbclient --disable-libsnappy --disable-sndio --disable-libsoxr --disable-libspeex --enable-sse --disable-libssh --disable-libtesseract --enable-libtheora --disable-libtwolame --enable-libv4l2 --enable-vaapi --enable-vdpau --disable-libvidstab --enable-libvorbis --disable-libvo-amrwbenc --enable-libvpx --disable-libwavpack --disable-libwebp --enable-libx264 --enable-libx265 --disable-libxcb --enable-libxvid --disable-outdev=xv --disable-libzimg --disable-libzmq --disable-libzvbi --disable-gcrypt --enable-gmp --disable-librtmp --enable-gnutls --disable-openssl --enable-version3 --enable-nonfree --disable-libmysofa
libavutil 55. 78.100 / 55. 78.100
libavcodec 57.107.100 / 57.107.100
libavformat 57. 83.100 / 57. 83.100
libavdevice 57. 10.100 / 57. 10.100
libavfilter 6.107.100 / 6.107.100
libavresample 3. 7. 0 / 3. 7. 0
libswscale 4. 8.100 / 4. 8.100
libswresample 2. 9.100 / 2. 9.100
libpostproc 54. 7.100 / 54. 7.100
[bluray @ 0x80d07e000] 13 usable playlists:
Input #0, mpegts, from 'bluray:/path/to/br':
Duration: 01:01:38.57, start: 11.650667, bitrate: 33068 kb/s
Program 1
Stream #0:0[0x1011]: Video: h264 (High) (HDMV / 0x564D4448), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 90k tbn, 47.95 tbc
Stream #0:1[0x1100]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side), fltp, 640 kb/s
Stream #0:2[0x1101]: Audio: truehd (AC-3 / 0x332D4341), 48000 Hz, 7.1, s32 (24 bit)
Stream #0:3[0x1101]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side), fltp, 640 kb/s
Stream #0:4[0x1102]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side), fltp, 448 kb/s
Stream #0:5[0x1103]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, stereo, fltp, 256 kb/s
Stream #0:6[0x1104]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side), fltp, 448 kb/s
Stream #0:7[0x1105]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side), fltp, 448 kb/s
Stream #0:8[0x1106]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side), fltp, 448 kb/s
Stream #0:9[0x1107]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side), fltp, 448 kb/s
Stream #0:10[0x1200]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090), 1920x1080
Stream #0:11[0x1201]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090), 1920x1080
Stream #0:12[0x1202]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090), 1920x1080
Stream #0:13[0x1203]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090), 1920x1080
Stream #0:14[0x1204]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090), 1920x1080
Stream #0:15[0x1205]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090), 1920x1080
Stream #0:16[0x1206]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090), 1920x1080
Stream #0:17[0x1207]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090), 1920x1080
Stream #0:18[0x1208]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090), 1920x1080
Stream #0:19[0x1209]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090), 1920x1080
Stream #0:20[0x120a]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090), 1920x1080
Stream #0:21[0x120b]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090), 1920x1080
Stream #0:22[0x1a00]: Audio: eac3 ([161][0][0][0] / 0x00A1), 48000 Hz, stereo, fltp, 192 kb/s
Stream #0:23[0x1b00]: Video: h264 (High) (HDMV / 0x564D4448), yuv420p(progressive), 720x480 [SAR 40:33 DAR 20:11], 23.98 fps, 23.98 tbr, 90k tbn, 47.95 tbc
The Blu-ray itself has language information and opening the tiny binary file
“00820.mpls” in a text editor shows strings such as “eng” and “spa” amongst all
the gibberish. I decided that instead of writing feature requests in both
ffmpeg and
libbluray it would be
much quicker to code up a binary reader for the file and add its data to the
data provided by ffprobe .... My function
pyguymer3.media.return_dict_of_media_audio_streams() now calls this
sub-module and adds the language code to each stream.
Copyright 2017 Thomas Guymer [1]
References
Examples
The below code will print out the entire dictionary for you.
>>> import pyguymer3
>>> import pyguymer3.media
>>> info = pyguymer3.media.parse_MPLS_file("/path/to/blu-ray", 800)
>>> import json
>>> print(json.dumps(info, ensure_ascii = False, indent = 4, sort_keys = True))
The below code wil print out the mapping between audio stream PID and language.
>>> import pyguymer3
>>> import pyguymer3.media
>>> info = pyguymer3.media.parse_MPLS_file("/path/to/blu-ray", 800)
>>> for PlayItem in info["PlayList"]["PlayItems"]:
... for name in ["PrimaryAudioStreamEntries", "SecondaryAudioStreamEntries"]:
... for AudioStreamEntry in PlayItem["STNTable"][name]:
... if "StreamEntry" in AudioStreamEntry and "StreamAttributes" in AudioStreamEntry:
... if "RefToStreamPID" in AudioStreamEntry["StreamEntry"] and "LanguageCode" in AudioStreamEntry["StreamAttributes"]:
... print(AudioStreamEntry["StreamEntry"]["RefToStreamPID"], AudioStreamEntry["StreamAttributes"]["LanguageCode"])
0x1100 jpn
0x1101 eng
0x1102 fra
0x1103 ita
0x1104 deu
0x1105 spa
0x1106 eng
0x1107 eng
0x1108 eng
Modules
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