Subtitle in Media3 not syncing properly with audio/video on ui

[amit12kumardish]

override fun onTracksChanged(tracks: Tracks) {
                    super.onTracksChanged(tracks)
                    for (group in tracks.groups) {
                        for (i in 0 until group.length) {
                            val format = group.getTrackFormat(i)
                            if (format.sampleMimeType == MimeTypes.APPLICATION_CEA608 || format.sampleMimeType == MimeTypes.APPLICATION_CEA708) {
                             Timber.d("onTracksChanged: %s", format.sampleMimeType)
                             val override = TrackSelectionOverride(group.mediaTrackGroup, i)
                             player?.let { player ->
                                 val parameters =
                                       player.trackSelectionParameters
                                      .buildUpon()
                                      .addOverride(override)
                                      .build()
                                  player.trackSelectionParameters = parameters
                                     }
                                }
                            }
                        }
                    }

i am able to see the tracks, but sometimes captions are not matching with audio.video, its lagging

[icbaker]

Please provide media we can use to reproduce the issue. Please either upload it here or send it to android-media-github@google.com with the subject Issue #2050. Please also update this issue to indicate you’ve done this.

[amit12kumardish]

networkhal_1.ts <https://drive.google.com/file/d/1Si3tzZ_2M0PcLDq4_YQX-gLd598kreQv/view?usp=drive_web>

…

On Fri, Jan 17, 2025 at 4:09 PM Ian Baker ***@***.***> wrote: * This message originated outside of DISH and was sent by: ***@***.*** ***@***.***> * ------------------------------ Please provide media we can use to reproduce the issue. Please either upload it here or send it to ***@***.*** with the subject Issue #2050. Please also update this issue to indicate you’ve done this. — Reply to this email directly, view it on GitHub <#2050 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BERVOZV6BZDIMKKT3YFWLKT2LDMWRAVCNFSM6AAAAABVLSPGCOVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDKOJXHE2TQMJXG4> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[amit12kumardish]

any updates

[amit12kumardish]

one more observation, i can see same delay in vlc player too, for the same content, how can i fix it

[icbaker]

The media link above is not accessible to me.

one more observation, i can see same delay in vlc player too, for the same content, how can i fix it

This sounds like an issue with your media, rather than with ExoPlayer. I'm afraid we are not experts on preparing media, so we can't help you with how to fix the media.