Конвертирую DVD в h.264 с помощью mencoder, x264. Вот что говорит mediainfo о исходнике:
Код: Выделить всё
General
Complete name : /media/Data/video/1978-04-22_Peace_Concert,_Kingston,_Jamaica_National_Heroes_Stadium_(DVD_5_x_2)/DVD_1/VIDEO_TS/VTS_01_1.VOB
Format : MPEG-PS
File size : 1 024 MiB
Duration : 20mn 9s
Overall bit rate : 7 103 Kbps
Video
ID : 224 (0xE0)
Format : MPEG Video
Format version : Version 2
Format profile : Main@Main
Format settings, BVOP : Yes
Format settings, Matrix : Default
Format settings, GOP : M=3, N=13
Duration : 20mn 9s
Bit rate mode : Constant
Bit rate : 6 300 Kbps
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 2.35:1
Frame rate : 25.000 fps
Standard : PAL
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Interlaced
Scan order : Top Field First
Bits/(Pixel*Frame) : 0.608
Stream size : 907 MiB (89%)
Audio #1
ID : 128 (0x80)
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Duration : 20mn 9s
Bit rate mode : Constant
Bit rate : 224 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Stream size : 32.3 MiB (3%)
Audio #2
ID : 129 (0x81)
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Duration : 20mn 8s
Bit rate mode : Constant
Bit rate : 448 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Stream size : 64.6 MiB (6%)
Menu
General
Complete name : /media/Data/video/1978-04-22_Peace_Concert,_Kingston,_Jamaica_National_Heroes_Stadium_(DVD_5_x_2)/DVD_1/VIDEO_TS/VTS_01_2.VOB
Format : MPEG-PS
File size : 1 024 MiB
Duration : 20mn 9s
Overall bit rate : 7 102 Kbps
Video
ID : 224 (0xE0)
Format : MPEG Video
Format version : Version 2
Format profile : Main@Main
Format settings, BVOP : Yes
Format settings, Matrix : Default
Format settings, GOP : M=3, N=13
Duration : 20mn 9s
Bit rate mode : Constant
Bit rate : 6 300 Kbps
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 2.35:1
Frame rate : 25.000 fps
Standard : PAL
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Interlaced
Scan order : Top Field First
Bits/(Pixel*Frame) : 0.608
Stream size : 907 MiB (89%)
Audio #1
ID : 128 (0x80)
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Duration : 20mn 9s
Bit rate mode : Constant
Bit rate : 224 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Video delay : -280ms
Stream size : 32.3 MiB (3%)
Audio #2
ID : 129 (0x81)
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Duration : 20mn 9s
Bit rate mode : Constant
Bit rate : 448 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Video delay : -376ms
Stream size : 64.6 MiB (6%)
Menu
General
Complete name : /media/Data/video/1978-04-22_Peace_Concert,_Kingston,_Jamaica_National_Heroes_Stadium_(DVD_5_x_2)/DVD_1/VIDEO_TS/VTS_01_4.VOB
Format : MPEG-PS
File size : 1 024 MiB
Duration : 20mn 9s
Overall bit rate : 7 103 Kbps
Video
ID : 224 (0xE0)
Format : MPEG Video
Format version : Version 2
Format profile : Main@Main
Format settings, BVOP : Yes
Format settings, Matrix : Default
Format settings, GOP : M=3, N=13
Duration : 20mn 9s
Bit rate mode : Constant
Bit rate : 6 300 Kbps
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 2.35:1
Frame rate : 25.000 fps
Standard : PAL
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Interlaced
Scan order : Top Field First
Bits/(Pixel*Frame) : 0.608
Stream size : 906 MiB (89%)
Audio #1
ID : 128 (0x80)
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Duration : 20mn 9s
Bit rate mode : Constant
Bit rate : 224 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Video delay : -608ms
Stream size : 32.3 MiB (3%)
Audio #2
ID : 129 (0x81)
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Duration : 20mn 9s
Bit rate mode : Constant
Bit rate : 448 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Video delay : -640ms
Stream size : 64.6 MiB (6%)
Menu
General
Complete name : /media/Data/video/1978-04-22_Peace_Concert,_Kingston,_Jamaica_National_Heroes_Stadium_(DVD_5_x_2)/DVD_1/VIDEO_TS/VTS_01_3.VOB
Format : MPEG-PS
File size : 1 024 MiB
Duration : 20mn 9s
Overall bit rate : 7 103 Kbps
Video
ID : 224 (0xE0)
Format : MPEG Video
Format version : Version 2
Format profile : Main@Main
Format settings, BVOP : Yes
Format settings, Matrix : Default
Format settings, GOP : M=3, N=13
Duration : 20mn 8s
Bit rate mode : Constant
Bit rate : 6 300 Kbps
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 2.35:1
Frame rate : 25.000 fps
Standard : PAL
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Interlaced
Scan order : Top Field First
Bits/(Pixel*Frame) : 0.608
Stream size : 906 MiB (89%)
Audio #1
ID : 128 (0x80)
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Duration : 20mn 9s
Bit rate mode : Constant
Bit rate : 224 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Video delay : -640ms
Stream size : 32.3 MiB (3%)
Audio #2
ID : 129 (0x81)
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Duration : 20mn 9s
Bit rate mode : Constant
Bit rate : 448 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Video delay : -704ms
Stream size : 64.6 MiB (6%)
Menu
General
Complete name : /media/Data/video/1978-04-22_Peace_Concert,_Kingston,_Jamaica_National_Heroes_Stadium_(DVD_5_x_2)/DVD_1/VIDEO_TS/VTS_01_5.VOB
Format : MPEG-PS
File size : 328 MiB
Duration : 6mn 19s
Overall bit rate : 7 252 Kbps
Video
ID : 224 (0xE0)
Format : MPEG Video
Format version : Version 2
Format profile : Main@Main
Format settings, BVOP : Yes
Format settings, Matrix : Default
Format settings, GOP : M=3, N=13
Duration : 6mn 19s
Bit rate mode : Constant
Bit rate : 6 300 Kbps
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 2.35:1
Frame rate : 25.000 fps
Standard : PAL
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Interlaced
Scan order : Top Field First
Bits/(Pixel*Frame) : 0.608
Stream size : 291 MiB (89%)
Audio #1
ID : 128 (0x80)
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Duration : 6mn 19s
Bit rate mode : Constant
Bit rate : 224 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Video delay : -512ms
Stream size : 10.1 MiB (3%)
Audio #2
ID : 129 (0x81)
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Duration : 6mn 19s
Bit rate mode : Constant
Bit rate : 448 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Video delay : -544ms
Stream size : 20.2 MiB (6%)
Menu
General
Complete name : /media/Data/video/1978-04-22_Peace_Concert,_Kingston,_Jamaica_National_Heroes_Stadium_(DVD_5_x_2)/DVD_1/VIDEO_TS/VTS_01_0.BUP
Format : DVD Video
Format profile : Program
File size : 56.0 KiB
Video
ID : 224 (0xE0)
Format : MPEG Video
Format version : Version 2
Bit rate mode : Variable
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 fps
Standard : PAL
Audio #1
ID : 128 (0x80)
Format : AC-3
Format/Info : Audio Coding 3
Channel(s) : 2 channels
Sampling rate : 48.0 KHz
Language : English
Audio #2
ID : 129 (0x81)
Format : AC-3
Format/Info : Audio Coding 3
Channel(s) : 6 channels
Sampling rate : 48.0 KHz
Language : English
Text
ID : 32 (0x20)
Format : RLE
Format/Info : Run-length encoding
Bit depth : 2 bits
Language : English
Menu
List (Audio) : 0 / 1
List (Subtitles 4/3) : 0
List (Subtitles Wide) : 0
List (Subtitles Letterbox) : 0
List (Subtitles Pan&Scan) : 0
General
Complete name : /media/Data/video/1978-04-22_Peace_Concert,_Kingston,_Jamaica_National_Heroes_Stadium_(DVD_5_x_2)/DVD_1/VIDEO_TS/VTS_01_0.IFO
Format : DVD Video
Format profile : Program
File size : 56.0 KiB
Video
ID : 224 (0xE0)
Format : MPEG Video
Format version : Version 2
Bit rate mode : Variable
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 fps
Standard : PAL
Audio #1
ID : 128 (0x80)
Format : AC-3
Format/Info : Audio Coding 3
Channel(s) : 2 channels
Sampling rate : 48.0 KHz
Language : English
Audio #2
ID : 129 (0x81)
Format : AC-3
Format/Info : Audio Coding 3
Channel(s) : 6 channels
Sampling rate : 48.0 KHz
Language : English
Text
ID : 32 (0x20)
Format : RLE
Format/Info : Run-length encoding
Bit depth : 2 bits
Language : English
Menu
List (Audio) : 0 / 1
List (Subtitles 4/3) : 0
List (Subtitles Wide) : 0
List (Subtitles Letterbox) : 0
List (Subtitles Pan&Scan) : 0
General
Complete name : /media/Data/video/1978-04-22_Peace_Concert,_Kingston,_Jamaica_National_Heroes_Stadium_(DVD_5_x_2)/DVD_1/VIDEO_TS/VIDEO_TS.BUP
Format : DVD Video
Format profile : Menu
File size : 6.00 KiB
Video
ID : 224 (0xE0)
Format : MPEG Video
Format version : Version 2
Bit rate mode : Variable
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 fps
Standard : PAL
General
Complete name : /media/Data/video/1978-04-22_Peace_Concert,_Kingston,_Jamaica_National_Heroes_Stadium_(DVD_5_x_2)/DVD_1/VIDEO_TS/VIDEO_TS.IFO
Format : DVD Video
Format profile : Menu
File size : 6.00 KiB
Video
ID : 224 (0xE0)
Format : MPEG Video
Format version : Version 2
Bit rate mode : Variable
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 fps
Standard : PAL
Запускаю mencoder в 3 прохода, при этом использую ключ -oac copy, т. е. по идее копирую оригинальную звуковую дорожку (хотя там их две: одна 2-канальная и одна 6-канальная), на выходе получаю жуткий рассинхрон, причём к концу фильма звук вообще пропадает. Продолжительность видео 1:26, а аудио - 1:35. Вот этот момент я совсем не понимаю, т. к.:
1) продолжительность исходного видео, судя по mplayer, 1:26:56
2) если извлечь исходную аудиодорожку и пережать в AAC, то она почему-то 1:34:54! хотя на 1:26:03 mplayer прерывает её воспроизведение.
В общем, какие-то непонятки с аудиодорожками. И при копировании из исходника её размер меняется, и при кодировании в AAC.
Извлекаю и кодирую в AAC так:
Код: Выделить всё
mkfifo audiodump.pcm; \
(time faac -b 224 -q 100 --tns --mpeg-vers 4 -P -R 48000 -C 2 -X audiodump.pcm -o audio-en2.aac & \
mplayer dvd://$dvdn -dvd-device source -vc dummy -vo null -ao pcm:nowaveheader -channels 2 -aid 128 &>/dev/null);\
(time faac -b 448 -q 100 --tns --mpeg-vers 4 -P -R 48000 -C 6 -X audiodump.pcm -o audio-en6.aac & \
mplayer dvd://$dvdn -dvd-device source -vc dummy -vo null -ao pcm:nowaveheader -channels 6 -aid 129 &>/dev/null);\