media-processing

Media Processing Application

This application processes the media content uploaded by the users.

• The Convert Audio function converts the format of a media file.
• The Get Media Meta function extracts the meta information from a media file.

Prerequisite

Both functions access OSS storage (an Alibaba-cloud equivalent of S3). You have to create an OSS bucket and upload some videos to it. (video-processing/data/video.mp4 is an example.)

Convert Audio Function

To deploy the function,

cd faas-scheduling-benchmark/media-processing
fun deploy -y convert-audio

To invoke the function,

# Replace all bracketed placeholders "<xxx>" with your choice.
# - The <fc-endpoint> can be found in the result printed out by `fun deploy`.
# - The "object_url" is where you have uploaded the video file. 
curl -s -i http://<fc-endpoint>/2016-08-15/proxy/media-processing/convert-audio/ \
        -X POST \
        -d "{ \"object_url\": \"https://<bucket-name>.oss-<region>.aliyuncs.com/<path-to-media-file>\", 
              \"output_bucket\": \"<bucket-name>\", 
              \"output_prefix\": \"<path-prefix>\", 
              \"dst_type\": \"wav\", 
              \"params\": \"-ac 1 -ar 4000\" 
            }" 

The function converts an audio file into the WAV format and writes it to <bucket-name>/<path-prefix>/.

Get Media Meta Function

To deploy the function,

cd faas-scheduling-benchmark/media-processing
fun deploy -y get-media-meta 

To invoke the function,

curl -s -i http://<fc-endpoint>/2016-08-15/proxy/media-processing/get-media-meta/ \
        -X POST \
        -d "{ \"object_url\": \"https://<bucket-name>.oss-<region>.aliyuncs.com/<path-to-media-file>\" }"