audio sync issue

[ankurss]

audio goes out of sync for some files,

here is an example : http://62.210.123.72/sync-issue.m3u8 you can grab original file : removed , this plays fine in vlc 2.1.3

[ankurss]

@rounce , did you check this ?

[ankurss]

have more such files, if you want to analyze them

do you have a donation page, some place where we can support you ?

[rounce]

Sorry, I was away from the computer for about a week. The issue reproduced, i'll try to fix it. don't have donation page yet.

[ankurss]

oh ok, no problem; looking forward for the fix

do let us know once your donation page is up

[ankurss]

@rounce , any luck with this mp4

[rounce]

Unfortunately no luck. Quickly could not find cause of the issue and don't have time for in-depth analysis. I think https://github.com/rounce/nginx-hls-module/issues/9 and https://github.com/rounce/nginx-hls-module/issues/10 are the same issue.

[T-bagwell]

Hi rounce, perhaps the issue 10 is pts problem of the video, isn't it?

[newestbie]

perhaps this issue is elst atom problem.

http://wiki.multimedia.cx/index.php?title=QuickTime_container#elst

[rounce]

It's unlikely that the issue is related to elst atom.

[newestbie]

I have fixed this bug:

output_ts:

- u_int to_break = 1;
+ u_int to_break = 0;
for(i = 0; i < fragment_size; ++i) {
if(fragment[i].trak == NULL) continue;
- if(fragment[i].first != fragment[i].last) to_break = 0;
+ if(fragment[i].first == fragment[i].last && to_break ==0) to_break = 1;
}

[ankurss]

i tried the above & it didn't fix the issue with the file specified in opening post

[c8seki]

Additionally when audio codec is HE-AAC (not AAC LC), the video fast-forward itself. (somehow wierd)