Ijven 4 Posted June 11, 2023 Posted June 11, 2023 Hi, I've been experiencing a strange issue over at least a period of a year. At first I thought it a fluke, but now Im not so sure... 2 and a half years ago I started digitising my media library. Dvd/Bluray to a fileserver locally hosted. Taking care only to compress and have the audio tracks I'm inerested in (using makeMKV and handbreak) in mkv files. When I tried a couple of media solutions I settled on Emby and bought a licence. Roughly a year and half ago I starten noticing audio tracks no longer showing up in the interface. Thinking it must be a problem with Emby not seeing the audiotrack, I checked the file with VLC an sure enough the audiotrack was gone ... In the mean time it has been progressed to the point that I have movies in my mibrary that simply have no audiotracks left! (Check attatchment) I don't know about you but I feel like having to rerip blurays ommits the convenience of having a media platform. Has anyone seen this before? What can be done to fix this? Let me know what I can provide to troubleshoot this... Kind regards! Ijven.
Luke 42077 Posted June 13, 2023 Posted June 13, 2023 Hi, I've never heard of this before. Is the file you have on disk the same one as your original rip with makemkv?
Ijven 4 Posted June 14, 2023 Author Posted June 14, 2023 Hi Luke, it is a bluray ripped with Makemkv and compressed with handbreak. This movie had 2 tracks: English 7.1 and English 5.1... but it is slowly happening across the system...
Luke 42077 Posted June 14, 2023 Posted June 14, 2023 But is it still the exact same file as when you first ripped it?
Ijven 4 Posted June 14, 2023 Author Posted June 14, 2023 Hi Luke, yes, I have not changed the files. Thinking about it, but have not yet done it as we have moved and the majority of discs is still in a box stored.
Luke 42077 Posted June 14, 2023 Posted June 14, 2023 Is it possible you have an automated process somewhere that reencoded the files? that's all I can think of.
Ijven 4 Posted June 15, 2023 Author Posted June 15, 2023 Hi Luke, Thanks for thinking this over. I have not, its a Ubuntu 20.04 server with a SMB fileshare (how I manage the files from remote pc's) that hosts the directories that Emby Server has access to. There are no other applications on that machine that do anything with media files) and a Minecraft server. I do have the machine set up to go to sleep if not in use for more than 15 minutes, it is based on the Emby network connections and the SMB users to avoid issues. I assume this will not have impact on the issue since I have this set up since the beginning of the year. Prior to this the machine was on all the time. Given the timeframe of the issue... I'll try and open the files in handbreak again, I used VLC before to check if the tracks were still there. Maybe somehow the tracks are just not being recognized? I will be out of town upcoming week so I'll post when I get the chance to do so. Kind Regards, Ijven 1
rbjtech 5284 Posted June 15, 2023 Posted June 15, 2023 Audio tracks are interleaved into the video - that is to say 'something' would have had to remove it and then remux the video - tracks don't just disappear and you can't just 'disable' them. Maybe have a look at the 'modified date' vs 'created' date on the file - unless something has 'modified' the file - these two dates should be the same. So if tracks are definately missing (check with mediainfo), then 'something' is cleanly removing them. If they are mkv - using mediainfo - it will tell you what WROTE the mkv ('writing application in the General section') - that may give you a clue if it was not the Application you originally used to write it.
Ijven 4 Posted June 15, 2023 Author Posted June 15, 2023 I managed to have a look right now, The tracks do not appear in Handbreak. The timestamps for file creation and edit are within 1hr apart (probably from renaming). And I know the track was there because I watched the movie... (Neat tool MediaInfo, it did state Handbreak as the program that wrote it on the 9th of January 2021, yet no tracks...) If this is just impossible, I'm going to assume system is haunted from now on then ... (and just rerip the blurays as and when I notice missing tracks) Thanks for your time... Kind regards, Ijven
rbjtech 5284 Posted June 15, 2023 Posted June 15, 2023 3 minutes ago, Ijven said: I managed to have a look right now, The tracks do not appear in Handbreak. The timestamps for file creation and edit are within 1hr apart (probably from renaming). And I know the track was there because I watched the movie... (Neat tool MediaInfo, it did state Handbreak as the program that wrote it on the 9th of January 2021, yet no tracks...) If this is just impossible, I'm going to assume system is haunted from now on then ... (and just rerip the blurays as and when I notice missing tracks) Thanks for your time... Kind regards, Ijven ok - so I guess that is your evidence that Handbrake wrote the file and it has not been changed since .... but agree it's all very odd ! ...
rbjtech 5284 Posted June 15, 2023 Posted June 15, 2023 Just now, Ijven said: Could it be some form of corruption? if the video plays ok - then I would say this is highly unlikely.
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