WhyCan Forum(哇酷开发者社区)

# mplayer badapple_240_60fps.mp4 
MPlayer 1.3.0-6.3.1 (C) 2000-2016 MPlayer Team

Playing badapple_240_60fps.mp4.
libavformat version 57.25.100 (internal)
libavformat file format detected.
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x6cc920]Protocol name not provided, cannot determine if input is local or a network protocol, buffers and access patterns cannot be configured optimally without knowing the protocol
[lavf] stream 0: video (h264), -vid 0
[lavf] stream 1: audio (aac), -aid 0, -alang und
VIDEO:  [H264]  240x240  24bpp  60.000 fps  331.6 kbps (40.5 kbyte/s)
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
libavcodec version 57.24.102 (internal)
Selected video codec: [ffh264] vfm: ffmpeg (FFmpeg H.264)
==========================================================================
Clip info:
 major_brand: isom
 minor_version: 512
 compatible_brands: isomiso2avc1mp41
 encoder: Lavf58.29.100
 description: Bilibili VXCode Swarm Transcoder v0.2.30(gap_fixed:False)
Load subtitles in ./
==========================================================================
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
AUDIO: 44100 Hz, 2 ch, floatle, 127.5 kbit/4.52% (ratio: 15936->352800)
Selected audio codec: [ffaac] afm: ffmpeg (FFmpeg AAC (MPEG-2/MPEG-4 Audio))
==========================================================================
[AO OSS] audio_setup: Can't open audio device /dev/dsp: No such file or directory
AO: [alsa] 44100Hz 2ch floatle (4 bytes per sample)
Starting playback...
Could not find matching colorspace - retrying with -vf scale...
Opening video filter: [scale]
Movie-Aspect is 1.67:1 - prescaling to correct movie aspect.
[swscaler @ 0x8f6958]bicubic scaler, from yuv420p to bgra using C
[swscaler @ 0x8f6958]No accelerated colorspace conversion found from yuv420p to bgra.
[swscaler @ 0x8f6958]using unscaled yuv420p -> bgra special converter
VO: [fbdev] 240x240 => 400x240 BGRA 
A:  -0.0 V:   0.1 A-V: -0.072 ct: -0.003   0/  0 ??% ??% ??,?% 0 0 $<50>