avthumb/<Format>
       /vcodec/<VideoCodec>
       /avsmart/<0|1>
       /smtQuality/<Quality>
       /refine/<Refine>
       /maxrate/<Maxrate>
       /r/<FrameRate>
       /ref/<Ref>
       /hr/<HighFrameRate>
       /vb/<VideoBitRate>
       /crf/<Crf>
       /h264Profile/<H264Profile>
       /h264Level/<H264Level>
       /s/<Resolution>
       /s/<Resolution>>
       /s/<Resolution><
       /aspect/<Aspect>
       /autoscale/<Autoscale>
       /padW/<PadW>
       /padH/<PadH>
       /padVideoX/<PadVideoX>
       /padVideoY/<PadVideoY>
       /gop/<GroupOfPictures>
       /colorspace/<ColorSpace>
       /keyFramePosition/<KeyFramePosition>
       /rotate/<Degree>
       /rotateinfo/<Degree>
       /flip/<Flip>
       /compressLevel/<level>
       /ss/<SeekStart>
       /t/<Duration>
       /gifHighColor/<GIFHighColor>
       /deinterlace/<Deinterlace>
       /wmImage/<EncodedKodoScheme>
       /wmVideo/<EncodedKodoScheme>
       /wmGravity/<Gravity>
       /wmScale/<Scale>
       /wmScaleType/<ScaleType>
       /wmVideoOrder/<VideoOrder>
       /wmConstant/<Constant>
       /wmAlpha/<Alpha>
       /wmIgnoreLoop/<WmIgnoreLoop>
       /wmText/<EncodedText>
       /wmGravityText/<GravityText>
       /wmFont/<font>
       /wmFontStyle/<fontStyle>
       /wmFontColor/<fontcolor>
       /wmFontSize/<fontsize>
       /wmOffsetX/<offsetX>
       /wmOffsetY/<offsetY>
       /wmPos/<Position>
       /wmDuration/<Duration>
       /wmShortest/<WmShortest>
       /mosaic/<Mosaic>
       /mosaicGravity/<MosaicGravity>
       /mosaicOffsetX/<MosaicOffsetX>
       /mosaicOffsetY/<MosaicOffsetY>
       /mosaicSize/<MosaicSize>
       /mosaicStart/<MosaicStart>
       /mosaicDuration/<MosaicDuration>
       /stream/<Stream>
       /cut/<Cut>
       /vn/<VideoNo>
       /sn/<SubtitleNo>
       /scodec/<SubtitleCodec>
       /subtitle/<SubtitleURL>
       /stFont/<SubtitleFont>
       /stFontSize/<SubtitleFontSize>
       /stOffsetX/<SubtitleOffsetX>
       /stOffsetY/<SubtitleOffsetY>
       /stripmeta/<StripMeta>
       /meta/<Meta>
       /useMovTags/<UseMovTags>
       /acodec/<AudioCodec>
       /ab/<BitRate>
       /ac/<ChannelNum>
       /ar/<SamplingRate>
       /aq/<AudioQuality>
       /audioProfile/<profile>
       /volume/<Volume>
       /loudnorm/<LoudNorm>
       /loudnormI/<LoudNormI>
       /loudnormLRA/<LoudNormLRA>
       /loudnormTP/<LoudNormTP>
       /loudnormF/<LoudNormF>
       /loudnormG/<LoudNormG>
       /loudnormRefine/<LoudNormRefine
       /an/<AudioNo>
       /speex/<Speex>
       /writeXing/<0|1>
       /amix/<AmixURL>
       /amixOffset/<AmixOffset>
       /amixStart/<AmixStart>
       /amixDuration/<AmixDuration>
       /multiArep/<MultiAudioReplaceURL>
       /multiArepOffset/<MultiAudioReplaceOffset>
       /multiArepStart/<MultiAudioReplaceStart>
       /multiArepDuration/<MultiAudioReplaceDuration>
       /sdr/<SDR>
       /pixFmt/<PixFmt>
       /limitWidth/<LimitWidth>
       /limitHeight/<LimitHeight>
       /limitSize/<LimitSize>
       /limitDuration/<LimitDuration>

注意：仅对音视频/gif动图/webp动图文件提供该操作。

from qiniu import Auth, put_file, etag, urlsafe_base64_encode
import qiniu.config

# access_key，secret_key在个人面板的密钥管理处获得，非个人账号密码
access_key = '...'
secret_key = '...'

# 初始化Auth状态
q = Auth(access_key, secret_key)

# 你要测试的空间， 并且这个key在你空间中存在
bucket_name = '...'
key = '...'

# 是使用的队列名称,不设置代表不使用私有队列，使用公有队列。
pipeline = 'your_pipeline'

# 设置转码参数
fops = 'avthumb/mp4/vcodec/libx264'

# 通过添加'|saveas'参数，指定处理后的文件保存的bucket和key，不指定默认保存在当前空间，bucket_saved为目标bucket，bucket_saved为目标key
saveas_key = urlsafe_base64_encode('bucket_saved:bucket_saved')

fops = fops+'|saveas/'+saveas_key

# 在上传策略中指定fobs和pipeline
policy={
  'persistentOps':fops,
  'persistentPipeline':pipeline
 }

token = q.upload_token(bucket_name, key, 3600, policy)

# 视频所在的本地路径
localfile = './python_video.flv'

ret, info = put_file(token, key, localfile)
print(info)
assert ret['key'] == key
assert ret['hash'] == etag(localfile)

from qiniu import Auth, PersistentFop, build_op, op_save, urlsafe_base64_encode

# 对已经上传到七牛的视频发起异步转码操作
# access_key，secret_key在个人面板的密钥管理处获得，非个人账号密码
access_key = '...'
secret_key = '...'
q = Auth(access_key, secret_key)

# 要转码的文件所在的空间和文件名。
bucket_name = '...'
key = '...'

# 是使用的队列名称,不设置代表不使用私有队列，使用公有队列。
pipeline = 'your_pipeline'

# 要进行转码的转码操作。
fops = 'avthumb/mp4/s/640x360/vb/1.25m'

# 可以对转码后的文件进行使用saveas参数自定义命名，当然也可以不指定文件会默认命名并保存在当前空间
saveas_key = urlsafe_base64_encode('目标Bucket_Name:自定义文件key')
fops = fops+'|saveas/'+saveas_key

pfop = PersistentFop(q, bucket_name, pipeline)
ops = []
ops.append(fops)
ret, info = pfop.execute(key, ops, 1)
print(info)
assert ret['persistentId'] is not None

<fop1>|<fop2>|<fop3>|<fopN>