IssueTracker

dependencies def media3_version = "1.4.0" implementation("androidx.media3:media3-exoplayer:$media3_version") implementation("androidx.media3:media3-exoplayer-dash:$media3_version") implementation("androidx.media3:media3-exoplayer-hls:$media3_version") implementation("androidx.media3:media3-ui:$media3_version")

working code without coroutine scope

    private fun setFrames() {
        binding.rvFrames.adapter = bitmapAdapter
        val mediaMetadataRetriever = MediaMetadataRetriever()
        mediaMetadataRetriever.setDataSource(this@VideoTrimActivity, videoInputUri)
        try {
            var sec = 1
            val diff = totalDuration / 8

//            lifecycleScope.launch(Dispatchers.Main) {
//                withContext(Dispatchers.IO){
                    for(i in 0 until  8){
                        val interval = diff * sec
                        val bitmap = mediaMetadataRetriever.getFrameAtTime(
                            interval*1000,
                            MediaMetadataRetriever.OPTION_CLOSEST_SYNC
                        )
                        bitmap?.let {
                            var scaledBitmap :Bitmap? = null
                            try {
                                scaledBitmap =  Bitmap.createScaledBitmap(bitmap, 100, 100, 
                                false)
                            } catch (t: Throwable) {
                                t.printStackTrace()
                            }

                            scaledBitmap?.let {
                                bitmapArray.add(it)
                            }
                        }
                        if (sec < totalDuration)
                            sec++
                    }
//                }
                bitmapAdapter.addAllBitmaps(bitmapArray)
//            }
        }catch (e: Exception){
            e.printStackTrace()
        } finally {
            mediaMetadataRetriever.release()
        }
    }

it takes time to getting frames to wrapped this around coroutine block but after this it gives no retriever available exception

Could you provide any reason for that or any better practice to retrieve frames so that ui doesn't stuck