sound gets delayed after playing 15 minutes

[mihai-gdm]

Hello everyone,

I am experiencing a somehow similar issue. My TV/media player can play 1080p mkv AC3 audio, but not DTS audio files. Many of the movies I own have DTS audio and in order to see them I convert the video file with any-video-convertor (same resolution, frame rate, video bitrate) just changing the audio to AC3 320kbps (the largest audio bitrate available in this software).

And now comes the problem, after a certain while the sound gets delayed in a manner that after watching 10 minutes the delay is around 1 sec. When a ffwd the movie even 1sec the synchronize is perfect (well... at least for 5-10 minutes).

The idea is that the TV set plays AC3 1080p mkvs that I hadn't audio converted with no such problem.

Are you aware where the problem may be? (I think the video converter that I'm using has is "guilt". If so, can you recommend a similar free software?)

Many thanks,
Mihai G.

[mpalm887]

Hello everyone,

I am experiencing a somehow similar issue. My TV/media player can play 1080p mkv AC3 audio, but not DTS audio files. Many of the movies I own have DTS audio and in order to see them I convert the video file with any-video-convertor (same resolution, frame rate, video bitrate) just changing the audio to AC3 320kbps (the largest audio bitrate available in this software).

And now comes the problem, after a certain while the sound gets delayed in a manner that after watching 10 minutes the delay is around 1 sec. When a ffwd the movie even 1sec the synchronize is perfect (well... at least for 5-10 minutes).

The idea is that the TV set plays AC3 1080p mkvs that I hadn't audio converted with no such problem.

Are you aware where the problem may be? (I think the video converter that I'm using has is "guilt". If so, can you recommend a similar free software?)

Many thanks,
Mihai G.

What kind of TV is it? And the TV itself is doing the processing (just a hard drive plugged into the back or something)? Let me just say that sometimes newly converted MKV's can never be properly synced. Do the newly converted files play back good on your PC? If that's the case then it's obviously your TV and I would personally either try a lower bit-rate audio (unfortunately) or buy a Network Media Tank.

I had this issue on a couple of MKV's when using one-tool converters. I ended up using RipBot264 just to demux the streams and convert the audio, and then snagged the separate tracks from their temporary folders and used another program to remux as M2TS and it worked. I think it was TSRemux.

[mihai-gdm]

Thank you for the fast reply,

Yes you got that right, I just plug a hard drive into an USB slot at the back of the TV and it plays almost any popular video format. The high bitrate is definitely not the issue because:
- I have tried with 64kbps AC3 and the result is the same
- I have played 640kbps AC3 movies, that weren't converted by me in any matter and the played just fine.

My laptop plays only 720p (Celeron Laptop ) so I cannot check if the audio-video is not synchd (but I have a feeling that they'll play the same as on my TV).

I'll try another free software and will give you feedback with the results.

Thanks

[johns0]

I have started a new thread for you,next time you have a new question to ask please start your own thread.

[filmboss80]

When you converted the audio to ac3, did you, by chance, use variable bitrate (VBR)? That is oftentimes the culprit in sync loss. If that is the case, re-encode the audio to an ac3 stream at constant bitrate (CBR).