把视频直接上传的七牛上，为什么在浏览器中输入外链不能直接播放，而是自动下载了？
原因：
音视频是否可以直接在浏览器中播放取决于浏览器对该格式视频的支持，如果不支持就直接下载了。
可以通过url?avinfo 查看视频源信息，
看以查看到该格式并不是MP4格式，而是wmav2，一般浏览器不支持这种格式，可以使用七牛的音视频处理服务进行转码为MP4格式，
http://developer.qiniu.com/code/v6/api/dora-api/index.html#av
{
streams: [
{
index: 0,
codec_name: "wmav2",
codec_long_name: "Windows Media Audio 2",
codec_type: "audio",
codec_time_base: "1/44100",
codec_tag_string: "a[1][0][0]",
codec_tag: "0x0161",
sample_fmt: "fltp",
sample_rate: "44100",
channels: 2,
bits_per_sample: 0,
r_frame_rate: "0/0",
avg_frame_rate: "0/0",
time_base: "1/1000",
start_pts: 0,
start_time: "0.000000",
duration_ts: 30093,
duration: "30.093000",
bit_rate: "192040",
disposition: {
default: 0,
dub: 0,
original: 0,
comment: 0,
lyrics: 0,
karaoke: 0,
forced: 0,
hearing_impaired: 0,
visual_impaired: 0,
clean_effects: 0,
attached_pic: 0
},
tags: {
language: "eng"
}
},
{
index: 1,
codec_name: "vc1",
codec_long_name: "SMPTE VC-1",
profile: "Advanced",
codec_type: "video",
codec_time_base: "1/1000",
codec_tag_string: "WVC1",
codec_tag: "0x31435657",
width: 1280,
height: 720,
has_b_frames: 1,
sample_aspect_ratio: "0:1",
display_aspect_ratio: "0:1",
pix_fmt: "yuv420p",
level: 3,
chroma_location: "left",
r_frame_rate: "30000/1001",
avg_frame_rate: "30000/1001",
time_base: "1/1000",
start_pts: 0,
start_time: "0.000000",
duration_ts: 30093,
duration: "30.093000",
bit_rate: "5942130",
disposition: {
default: 0,
dub: 0,
original: 0,
comment: 0,
lyrics: 0,
karaoke: 0,
forced: 0,
hearing_impaired: 0,
visual_impaired: 0,
clean_effects: 0,
attached_pic: 0
},
tags: {
language: "eng"
}
}
],
format: {
nb_streams: 2,
nb_programs: 0,
format_name: "asf",
format_long_name: "ASF (Advanced / Active Streaming Format)",
start_time: "0.000000",
duration: "30.093000",
size: "26246026",
bit_rate: "6977310",
probe_score: 100,
tags: {
SfOriginalFPS: "299700",
WMFSDKVersion: "11.0.6001.7000",
WMFSDKNeeded: "0.0.0.0000",
comment: "Footage: Small World Productions, Inc; Tourism New Zealand | Producer: Gary F. Spradling | Music: Steve Ball",
title: "Wildlife in HD",
copyright: "漏 2008 Microsoft Corporation",
IsVBR: "0",
DeviceConformanceTemplate: "AP@L3"
}
}
}登录后复制
或者将链接放在网页<video>标签里面，可以播放。
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