In my android application i am downloading Facebook video and audio separately and merging it in an output file. The reason is Facebook videos URLs have no sound and audio URL is separate. I have tried using this mp4Parser for merging audio and video and it works pretty well in most of devices but having issues in Redmi/MI devices when playing from device files.
Steps i followed
- Download NO SOUND Video in mp4 format.
- Download audio in m4a format.
- Merge both files and create an output file with mp4 format.
- After merging is done deleted no sound video and temporary audio.
Below is my code
Dependencies
implementation 'com.iceteck.silicompressorr:silicompressor:2.2.4'
implementation('com.googlecode.mp4parser:isoparser:1.0.6') {
exclude group: 'org.aspectj', module: 'aspectjrt'
}
Merging code
private fun mergeAudioAndVideo(
id: Int,
model: DatabaseDownloadItem?,
file: File?,
activityInstance: LocaleAwareCompatActivity?
) {
val mergingDetail = sharedPreferencesManager.getItemInMergingList(id)
if (mergingDetail != null) {
val timeInMillis = System.currentTimeMillis()
var list: ArrayList<DatabaseDownloadItem>? = sharedViewmodel.pendingMerge.value
if (list == null) {
list = arrayListOf()
}
list.add(model!!)
sharedViewmodel.pendingMerge.postValue(list)
sharedViewmodel.pendingMerge.value?.add(model!!)
CoroutineScope(Dispatchers.Main).launch {
var mergePendingItems: ArrayList<Int>? =
tinyDB?.getMergeList(AppConstants.MERGE_PENDING_DOWNLOADS)
if (mergePendingItems == null) {
mergePendingItems = arrayListOf()
}
if (!mergePendingItems.contains(model.id)) {
mergePendingItems.add(model.id)
}
tinyDB?.putMergeList(AppConstants.MERGE_PENDING_DOWNLOADS, mergePendingItems)
adapter.notifyDataSetChanged()
CoroutineScope(Dispatchers.IO + exceptionHandler).async {
val audiopath = mergingDetail.audioPath
val videopath = mergingDetail.videoPath
/*
following comment is kept for reference
val audiopath = "/storage/emulated/0/VideoDownloader/tempAudio_1643715180488.m4a"
val videopath = "/storage/emulated/0/VideoDownloader/1643715180480.mp4"*/
val output: String
val outputName = "output_${mergingDetail.originalFileName}"
mergingDetail.outputFileName = outputName
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
val file = File(
getDownloaderFolderFromDownloads(),
"$outputName.mp4"
)
output = file.absolutePath
mergingDetail.outputFile = file
} else {
val file = File(
Environment.getExternalStorageDirectory()
.toString() + "/VideoDownloader/",
"$outputName.mp4"
)
output = file.absolutePath
mergingDetail.outputFile = file
}
var videoOutput: Movie? = null
var audioOutput: Movie? = null
kotlin.runCatching {
videoOutput = MovieCreator.build(videopath)
audioOutput = MovieCreator.build(audiopath)
}
val finalTrack: MutableList<Track> = ArrayList()
for (track in videoOutput?.tracks!!) {
if (track.handler.equals("vide")) finalTrack.add(track)
}
for (track in audioOutput?.tracks!!) {
if (track.handler.equals("soun")) finalTrack.add(track)
}
videoOutput?.tracks = finalTrack
val mp4file: Container = DefaultMp4Builder().build(videoOutput)
kotlin.runCatching {
val fc: FileChannel = FileOutputStream(File(output)).getChannel()
mp4file.writeContainer(fc)
fc.close()
}.onFailure { error ->
val abc = error
}.onSuccess { someFuncReturnValue ->
val abc = "dss"
}
}.await()
Toast.makeText(activityInstance, "Audio Video Merging Done", Toast.LENGTH_SHORT)
.show()
mergingDetail.isMergingDone = true
sharedPreferencesManager.updateItemInMergingList(id, mergingDetail)
executeDownloadCompletion(model, file, activityInstance)
deleteTempAudioFile(File(mergingDetail.audioPath!!), activityInstance)
deleteOldMutedVideo(File(mergingDetail.videoPath!!), activityInstance)
renameOutputFileWithDBName(mergingDetail, activityInstance)
var list: ArrayList<DatabaseDownloadItem>? = sharedViewmodel.pendingMerge.value
if (list != null && list!!.size > 0) {
list!!.remove(model!!)
sharedViewmodel.pendingMerge.postValue(list)
sharedViewmodel.pendingMerge.value?.add(model!!)
}
notificationWork(model, file, activityInstance)
sharedPreferencesManager.deleteItemInMergingList(id)
}
}
}
This works fine in most of devices but in MI Devices (i.e Redmi S2, MUI Version MUI Global 12.0.2) i am having an issue while playing the output file its corrupted and cannot be played. The error which shows up is just with title unknown.
Please note that i have also tried the following combination of dependencies, but this was generating lags in output file so removed these two.
implementation 'org.mp4parser:isoparser:1.9.41'
implementation 'org.mp4parser:muxer:1.9.41
Can somebody please suggest the proper usgae and dependency version of mp4parser for merging audio file and video file.
Any help will be appreciated.
Thank you
