Exoplayer Live video playback with seeking back to play recorded video (DVR)

• I have a live video with 5 min / 300 seconds backward seeking length (HLS media).
• I am able to play the video as a live stream.
• But when i seek back, it seeks up-to 56 seconds not 300 seconds, as player's window.getduration return 56 seconds (this is length of current live video).
• I tried to use MediaItem.ClippingConfiguration to set the start time of the player, but video is not playing in this case. Please see below code:

Can someone help me on this? How can i play live video and seek back and forward upto the duration of the recorded video contents (DVR)?

MediaItem.ClippingConfiguration config = new MediaItem.ClippingConfiguration.Builder()
            .setStartPositionMs(300*1000)
            .setEndPositionMs(100*1000)
            .setRelativeToLiveWindow(true)
            .setRelativeToDefaultPosition(true)
            .setStartsAtKeyFrame(true)
            .build();
    MediaItem.Builder mediaItemBuilder = new MediaItem.Builder();
    /* this is for HLS, getVideoUrl() returns the HLS url from the hosting activity*/
    if (streamingQualitySelector != null && videoUrl != null && !TextUtils.isEmpty(videoUrl)) {
        initiateSSAIAdsTracking();
        mediaItemBuilder
                .setUri(Uri.parse((videoUrl.trim())))
                .setMediaMetadata(new MediaMetadata.Builder().setTitle(streamingQualitySelector.getFilmId()).build())
                .setMimeType(adaptiveMimeType)
                .setClippingConfiguration(config);
    }