4k 威武
今天从 delectate 同学的博客上下载了一个他从 youtube 下载的 4k 视频,下面是他播放时的效果:
因为很感兴趣,所以从youtube把视频下载了下来,没想到 4096 x 2304 (16:9)把我卡的啊……先是用mplayer file播放,默认xv输出器,直接崩溃,提示fatal error。使用mplayer -vo x11 file播放,卡死,彻彻底底卡死……x差点崩溃。强退后发现compiz,metacity已经崩溃了。
我用 vaapi 硬解码的 mplayer 播放了一下,果然可怕, CPU 占用率飙高,就算开了跳帧也严重卡,而且影音不同步,播放的时候看到 mplayer 也出现了各种问题,我贴出来各位参考一下:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 | $ mplayer '/home/wheat0r/下载/Life_in_the_Garden_4k_resolution.mp4' -framedrop MPlayer SVN-r31303-4.4.3 (C) 2000-2010 MPlayer Team mplayer: could not connect to socket mplayer: No such file or directory Failed to open LIRC support. You will not be able to use your remote control. Playing /home/wheat0r/下载/Life_in_the_Garden_4k_resolution.mp4. libavformat file format detected. [lavf] stream 0: audio (aac), -aid 0, -alang und [lavf] stream 1: video (h264), -vid 0 VIDEO: [H264] 4096x2304 24bpp 23.976 fps 6445.1 kbps (786.8 kbyte/s) Clip info: major_brand: mp42 minor_version: 0 compatible_brands: isomavc1mp42 libva: libva version 0.31.0-sds6 Xlib: extension "XFree86-DRI" missing on display ":0.0". libva: va_getDriverName() returns 0 libva: Trying to open /usr/lib/va/drivers/nvidia_drv_video.so libva: va_openDriver() returns 0 Couldn't open video filter 'ass'. ASS: cannot add video filter [ass] Init [ass] Updating font cache ========================================================================== Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family [VD_FFMPEG] VA API accelerated codec. Selected video codec: [ffh264] vfm: ffmpeg (FFmpeg H.264) ========================================================================== ========================================================================== Opening audio decoder: [faad] AAC (MPEG2/4 Advanced Audio Coding) AUDIO: 48000 Hz, 2 ch, s16le, 119.2 kbit/7.76% (ratio: 14897->192000) Selected audio codec: [faad] afm: faad (FAAD AAC (MPEG-2/MPEG-4 Audio)) ========================================================================== AO: [pulse] 48000Hz 2ch s16le (2 bytes per sample) Starting playback... Unsupported PixelFormat 61 [VD_FFMPEG] Trying pixfmt=1. Movie-Aspect is 1.78:1 - prescaling to correct movie aspect. VO: [vaapi] 4096x2304 => 4096x2304 H.264 VA-API Acceleration [zoom] [ASPECT] Warning: No suitable new res found! [vo_vaapi] Using 1:1 VA surface mapping [vo_vaapi] vaCreateContext(): resolution not supported FATAL: Cannot initialize video driver. Unsupported PixelFormat 61 [VD_FFMPEG] Trying pixfmt=0. Unsupported PixelFormat 61 Could not find matching colorspace - retrying with -vf scale... Opening video filter: [scale] The selected video_out device is incompatible with this codec. Try appending the scale filter to your filter list, e.g. -vf spp,scale instead of -vf spp. [VD_FFMPEG] Trying pixfmt=2. Movie-Aspect is 1.78:1 - prescaling to correct movie aspect. VO: [vaapi] 4096x2304 => 4096x2304 Planar YV12 [zoom] [ASPECT] Warning: No suitable new res found! A: 3.0 V: 0.4 A-V: 2.628 ct: 0.021 0/ 0 ??% ??% ??,?% 50 0 ************************************************ **** Your system is too SLOW to play this! **** ************************************************ Possible reasons, problems, workarounds: - Most common: broken/buggy _audio_ driver - Try -ao sdl or use the OSS emulation of ALSA. - Experiment with different values for -autosync, 30 is a good start. - Slow video output - Try a different -vo driver (-vo help for a list) or try -framedrop! - Slow CPU - Don't try to play a big DVD/DivX on a slow CPU! Try some of the lavdopts, e.g. -vfm ffmpeg -lavdopts lowres=1:fast:skiploopfilter=all. - Broken file - Try various combinations of -nobps -ni -forceidx -mc 0. - Slow media (NFS/SMB mounts, DVD, VCD etc) - Try -cache 8192. - Are you using -cache to play a non-interleaved AVI file? - Try -nocache. Read DOCS/HTML/en/video.html for tuning/speedup tips. If none of this helps you, read DOCS/HTML/en/bugreports.html. A: 16.8 V: 16.7 A-V: 0.105 ct: 0.021 0/ 0 77% 25% 0.8% 262 0 Exiting... (Quit) |