The value of i needs to be multiplied by 100000, because the method expects
the time parameter to be in micro seconds.. hope it works...
On Monday, April 30, 2012 7:40:44 PM UTC+5, Yaron Reinharts wrote:
>
> Hi,
>
> I'm trying to sample frames from a video.
> However, MediaMetadataRetriever.getFrameAtTime always returns the same
> frame (the first).
>
> I tried with some emulators (2.3.3 to 4.0.3) and some video formats
> (including mp4 and 3gp which should be supported according to
> documentation).
>
> Here is a test code (saveBitmapToFile works well in many other locations
> so I truest it).
>
> MediaMetadataRetriever retriever = new MediaMetadataRetriever();
> retriever.setDataSource(filePath);
> String value =
> retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION);
> long length = Long.parseLong(value);
>
> for(int i = 0; i < length; i += 200)
> {
> Bitmap bitmap = retriever.getFrameAtTime(i);
> saveBitmapToFile(bitmap, debugPath + i + ".jpg");
> }
>
>
> What am I doing wrong?
>
> By the way, it looks that I'm not the first one bumped into this problem
>
> http://stackoverflow.com/questions/10188938/how-to-get-the-frame-from-video-file-in-android
>
> Thanks in advance
> /Yaron
>
> --
> Yaron Reinharts
> Smart Drive
> Applicationshttp://www.poncho.co.il/gateaway.phphttps://market.android.com/details?id=com.poncho.gsm.gate.activities
>
>
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