Thanks.
The link says:
MediaMetadataRetriever class provides a unified interface for retrieving 
frame and meta data from an input media file.

I would like real-time video processing: frame processing, display on the 
screen (and/or encode into a video file).
When doing frame processing, there is no video file yet.



On Thursday, November 21, 2013 12:39:59 AM UTC-6, gjs wrote:
>
> Hi,
>
> Suggest you read http://developer.android.com/reference/android
> /media/MediaMetadataRetriever.html
>
> And the other documentation for classes in the media framework, search 
> blogs for examples & stack overflow etc
>
> Regards
>
>
> On Thursday, November 21, 2013 8:15:34 AM UTC+11, Linda Li wrote:
>>
>> In iPhone, there are video processing APIs to get frames, process frames 
>> and encode to the output video file.
>> I find the companies, like GoPano and Kogeto that are doing real-time 
>> video processing, have published their products several years ago. But they 
>> are struggling in publishing products for Android devices. 
>> I assume Android system is not friendly for video real-time processing.
>>
>> Apparently, onPreviewFrame cannot be used here, since it is slow than the 
>> original frame rate.
>> If we read the MediaRecorder output (video streaming) to a socket, and 
>> get the data there, the video streaming data have been encoded, so we need 
>> to take extra time to decode it (let alone the whole process is not as 
>> friendly as in iPhone).
>>
>> It is a pity Android cannot beat iPhone in this area. People might 
>> convert to use iPhone when they find they cannot use many gadgets.
>>
>> I am not sure whether I miss something more convenient than what I have 
>> thought about.
>> Any ideas and opinions are welcome.
>>
>

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