Audio/Video Out of Sync

[RS]

From: Vangelis forthnet
Sent: Thursday, August 18, 2016 15:38

>> hlshd1 is now present but there are errors at
>> 4, 9, 10, 15, 16, 17, 33, 34, 36, 43 ...


>I just tried:

>perl get_iplayer-295.pl --pid=b07p4swg --tvmode=hlshd1 --raw

>My download had eight (8) missing segments
>(for a ca. 25min programme), precisely the following:

>10, 15, 16, 43, 93, 152, 153, 155.

>So not exactly the same as yours (???)

That's interesting.  I have tried it again and I get the same missing 
segments as before.  This time I let it continue to the end and the only 
missing segment after 43 was 155.  We do agree on some of them, so I don't 
know what it means.

As for the effect, although the subject says out of sync, if you play 
the --raw output (.ts) in VLC, it stops when it gets to a missing segment. 
You can jump over the missing segment and play the next good bit.

Usually I stop when I see there are errors and just throw away the defective 
file.  I then download again in FlashHD.

There is clearly work going on.  As we noted yesterday, the errors have got 
worse.  This morning for BBC Business Live the HLSHD mode was delayed.  For 
the News at One (b07myjtb) both the FlashHD and HLSHD modes were delayed 
about 50 minutes behind the other modes.

The errors I saw for hlshd1 were at 3, 12, 27, 30, 37, 38, 40, 41, 42, 49 
...