2.我有幾種影片格式無放正常播放,我用MediaInfo取得的檔案資訊如下 第一種: Format : Windows Media File size : 751 MiB Duration : 53mn 25s Overall bit rate mode : Constant Overall bit rate : 1 965 Kbps Maximum Overall bit rate : 2 068 Kbps Encoded date : UTC 2008-07-08 21:39:43.546
Video ID : 2 Format : WMV2 Codec ID : WMV2 Codec ID/Info : Windows Media Video 8 Description of the codec : Windows Media Video V8 Duration : 53mn 25s Bit rate mode : Constant Bit rate : 1 920 Kbps Width : 720 pixels Height : 540 pixels Display aspect ratio : 4:3 Frame rate : 29.970 fps Bit depth : 8 bits Bits/(Pixel*Frame) : 0.165 Stream size : 734 MiB (98%) Language : English
Audio ID : 1 Format : WMA Format version : Version 2 Codec ID : 161 Codec ID/Info : Windows Media Audio Description of the codec : Windows Media Audio 9.2 - 128 kbps, 48 kHz, stereo (A/V) 1-pass CBR Duration : 53mn 25s Bit rate mode : Constant Bit rate : 128 Kbps Channel(s) : 2 channels Sampling rate : 48.0 KHz Bit depth : 16 bits Stream size : 48.9 MiB (7%) Language : English 第二種: Format : Windows Media File size : 342 MiB Duration : 19mn 58s Overall bit rate : 2 396 Kbps Maximum Overall bit rate : 2 364 Kbps Encoded date : UTC 1970-01-01 00:00:00.000
Video ID : 1 Format : WMV2 Codec ID : WMV2 Codec ID/Info : Windows Media Video 8 Description of the codec : wmv2 Duration : 19mn 58s Bit rate : 2 228 Kbps Width : 768 pixels Height : 432 pixels Display aspect ratio : 16:9 Frame rate : 29.970 fps Bit depth : 8 bits Bits/(Pixel*Frame) : 0.224 Stream size : 318 MiB (93%)
Audio ID : 2 Format : WMA Format version : Version 2 Codec ID : 161 Codec ID/Info : Windows Media Audio Description of the codec : Windows Media Audio V8 Duration : 19mn 58s Bit rate : 64.0 Kbps Channel(s) : 2 channels Sampling rate : 48.0 KHz Bit depth : 16 bits Stream size : 9.14 MiB (3%) 第三種: Format : AVI Format/Info : Audio Video Interleave File size : 142 MiB Duration : 10mn 1s Overall bit rate : 1 986 Kbps Writing library : VirtualDub build 29808/release
Video ID : 0 Format : MPEG-4 Visual Format profile : Advanced Simple@L5 Format settings, BVOP : 2 Format settings, QPel : Yes Format settings, GMC : 3 warppoints Format settings, Matrix : Default (H.263) Muxing mode : Packed bitstream Codec ID : XVID Codec ID/Hint : XviD Duration : 10mn 1s Bit rate : 1 848 Kbps Width : 720 pixels Height : 400 pixels Display aspect ratio : 16:9 Frame rate : 25.000 fps Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Compression mode : Lossy Bits/(Pixel*Frame) : 0.257 Stream size : 132 MiB (93%) Writing library : XviD 1.1.2 (UTC 2006-11-01)
Audio ID : 1 Format : MPEG Audio Format version : Version 1 Format profile : Layer 3 Mode : Joint stereo Mode extension : MS Stereo Codec ID : 55 Codec ID/Hint : MP3 Duration : 10mn 1s Bit rate mode : Constant Bit rate : 128 Kbps Channel(s) : 2 channels Sampling rate : 48.0 KHz Compression mode : Lossy Stream size : 9.17 MiB (6%) Alignment : Split accross interleaves Interleave, duration : 40 ms (1.00 video frame) Interleave, preload duration : 500 ms