The Core Pocket Media Player (TCPMP) (проигрывание AVC/HD на медленных компьютерах)

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.0
Format settings, CABAC : Yes
Format settings, ReFrames : 1 frame
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Bit rate mode : Variable
Bit rate : 4 976 Kbps
Maximum bit rate : 7 717 Kbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 25.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.096
Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Bit rate mode : Variable
Bit rate : 192 Kbps
Maximum bit rate : 201 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 44.1 KHz
Compression mode : Lossy

# For playing video with low system loading (i.e. Using maximum of the pc power for video), play movies in the minimum Linux console (framebuffer device) without any X (such as XFree86, Xorg, or very light Xvesa) running.
# boot linux ~11 mb tinycore*.ISO to RAM with only additional mplayer-nodeps.Tcz oss.Tcz (sound), mc.Tcz (file manager), and ntfs-3g.tcz (to mount ntfs partitions). All together 20 MB. Base tinycore_*.ISO is mounted as rootfs. Next, *.tcz arhives are mounted as cloops. Also it's possible to copy them to rootfs by using copy2fs.lst
# It may be the best choice, or even you can use only base, busybox with some libs (Xlibs.tcz) for mplayer-nodeps.
# To activate framebuffer device (fbdev) and to fit the movie to full screen
.../mplayer.exe *.mkv -vo fbdev -fs
set at linux boot prompt "vga=ask" and choose corresponding to the movie size the vesa mode number from the table. To see what vesa modes your video card is supported you can also run "scan" at linux boot prompt, or ".../Xvesa -listmodes" when xvesa is running.
# mknod /dev/fb0
# Vga=xxx does not set fbdev, but only the screen resolution.
Depth 640x480 800x600 1024x768 1280x1024 1600x1200 ask at boot 1152x864
8 bits vga=769 vga=771 vga=773 vga=775 vga=796 vga=ask vga=353
16 bits vga=785 vga=788 vga=791 vga=794 vga=798 vga=ask vga=355
32 bits vga=786 vga=789 vga=792 vga=795 vga=799 vga=ask
# if in the Xvesa setting
.../Xvesa -br -screen 800x600x16 -shadow -mouse /dev/input/mice,5 -nolisten tcp -i >/dev/null 2>&1
If the Xvesa screen size is not equal the display screen size, xvesa (or fbdev) scales screen to movie size, and xvesa uses more cpu power, than if xvesa screen == display screen, and mplayer scales the movie size to the screen size (originally, only width's size should be equal) as:
.../mplayer.exe *.mkv -framedrop -cache 8192 -fs -zoom -xy [screen width as it's set in xvesa or fbdev]
# Playing 1280x720 movie at the CPU Pentium 1400 512 cache; RAM 512 MB; 8 MB intergated video; and 800x600 display:
Xvesa -screen 800x600x16 and -zoom -xy 800 ==> mplayer ~84% Xvesa ~15% of cpu, and ~17% and ~4% of ram
Xvesa -screen 1280x1024x16 ==> mplayer ~54% Xvesa ~45% of cpu
-fs gets more cpu for mplayer, and -zoom does not change much cpu for mplayer.
# There is an opinion that fbdev uses more CPU than X as fbdev recalculates colors, and xv should run faster than fbdev.
# As long as you have a properly supported graphics card, xv will use a lot less CPU than fbdev. The overhead of Xorg (Xvesa) running in the background is much less than the amount you save by using xv.
Set framebuffer to a mode with 15 or 16 bpp. Increase cache=8192
xv is hardware scaling & color conversion (using additional power of the video card, if there is one).
fbdev is software (i.e. using CPU), and color conversion still has to be done.
Framebuffers are usually RBG, movies YUV.
# If you have an X11 implementation without xv support, OpenGL is a viable alternative.
# fbdev blocks other terminals (multivt), and there is no opportunity to run "top" to determine cpu loading.
# It's good for you, if you have power video card, use its power (-vo xv).
But it's unclear so far, what is better with very slow or without video cards: X (with video card) or fbdev (with integrated video). Also, increasing CPU for Xvesa may be only scaling job re-distribution, and its influence on total result is unclear so far also.
fbdev (Linux Frame Buffer Device) — область видеопамяти для кратковременного хранения одного или нескольких видеокадров, а Linux framebuffer это метод доступа к фреймбуферу через ядро Linux, не полагаясь на системно-ориентированные библиотеки.
X video extension — расширение, позволяющее ускорить вывод видеофрагментов на экран с использованием возможностей графической платы (а точнее — её драйвера) и уменьшить тем самым нагрузку на центральный процессор. Многие графические платы позволяют выводить видеоизображения в форматах кодирования цвета YUV (YUY2, I420 и т. д.), которые используются в стандартах систем аналогового цветного телевидения PAL, SECAM, NTSC, не переводя их предварительно в формат передачи цвета дисплея (RGB16/24/32), а также производить обратное перекодирование.
Чтобы убедиться, что ваш X server поддерживает это расширение можно воспользоваться утилитой xdpyinfo. А для проверки, что текущая видеокарта поддерживает необходимые функции можно использовать программу xvinfo.
Обычно это называют аппаратной поддержкой масштабирования и ускорения преобразования YUV или просто аппаратным ускорением 2D графики. Ускорение будет ощутимо даже на компьютерах с быстрыми процессорами.
YUV — цветовая модель, в которой цвет представляется как 3 компоненты — яркость (Y) и две цветоразностных (U и V). Конверсия в RGB (Red, Green, Blue) и обратно в YUV осуществляется по формулам ...

set mplay=c:\Program Files\MPlayer for Windows\mplayer.exe
set mplay=c:\Program Files\SMPlayerPortable\App\SMPlayer\mplayer\mplayer.exe
"%mplay%" -vo directx:noaccel -framedrop -lavdopts lowres=0:fast:skiploopfilter=all -priority high "%~1%"
# -vo directx:noaccel - для встроенного видео, а с видео картой: -vo directx

General
Unique ID : 191558846735878297161888790072605960872 (0x901CE453D3975B16B5D07E2001166AA8)
Complete name : D:\Дублер.(2013).BDRip1080p.mkv
Format : Matroska
Format version : Version 4 / Version 2
File size : 6.93 GiB
Duration : 1h 23mn
Overall bit rate mode : Variable
Overall bit rate : 11.9 Mbps
Encoded date : UTC 2013-02-01 15:58:33
Writing application : mkvmerge v6.0.0 ('Coming Up For Air') built on Jan 20 2013 09:52:00
Writing library : libebml v1.3.0 + libmatroska v1.4.0
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 5 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 1h 23mn
Width : 1 920 pixels
Height : 800 pixels
Display aspect ratio : 2.40:1
Frame rate mode : Constant
Frame rate : 24.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Writing library : x264 core 129 r2245 bc13772
Encoding settings : cabac=1 / ref=5 / deblock=1:-3:-3 / analyse=0x3:0x113 / me=tesa / subme=10 / psy=1 / psy_rd=1.10:0.15 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=0 / chroma_qp_offset=-2 / threads=12 / lookahead_threads=2 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=5 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=240 / keyint_min=24 / scenecut=40 / intra_refresh=0 / rc_lookahead=60 / rc=crf / mbtree=0 / crf=17.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / vbv_maxrate=50000 / vbv_bufsize=62500 / crf_max=0.0 / nal_hrd=none / ip_ratio=1.40 / pb_ratio=1.30 / aq=2:1.00
Language : English
Default : Yes
Forced : No
Audio #1
ID : 2
Format : DTS
Format/Info : Digital Theater Systems
Format profile : MA / Core
Mode : 16
Format settings, Endianness : Big
Codec ID : A_DTS
Duration : 1h 23mn
Bit rate mode : Variable
Bit rate : Unknown / 1 509 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Compression mode : Lossless / Lossy
Language : Russian
Default : Yes
Forced : No
Audio #2
ID : 3
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Format settings, Endianness : Big
Codec ID : A_AC3
Duration : 1h 23mn
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
Compression mode : Lossy
Stream size : 268 MiB (4%)
Language : Russian
Default : No
Forced : No
Menu
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