What could be the problem with this Mpeg2?

Randy Brown wrote on 4/18/2004, 7:17 AM
Good morning everyone,
A client brought me an 8 minute recruitment video dubbed from Beta to mini DV. I captured it, added a logo on an upper track and rendered to Mpeg2. I then created a .dar in DVDA and started burning on a Sony Dru 500a (4x capable) and a Toshiba SD-R5002 (2x capable). Using the Memorex brand DVD-R media that I'm using, I've had no problem burning the burners' 2x and 4x speeds. However when selecting 2x on the Toshiba it takes 14:32 and when selecting 4x on the Sony it takes 7:51. My question is; can you think of anything else to check besides making sure that the Mpeg2 is actually 8 min. in duration (which I've already confirmed). It wouldn't be a big deal but they've requested 50 by tomorrow.
TIA,
Randy

Comments

TheHappyFriar wrote on 4/18/2004, 7:54 AM
I don't get it. What's wrong? Burning faster then 2x should take less time. If you've confirmed that the mpeg is 8 minutes long, why wouldn't it be? Did you put the DVD's in a player and check the time?
Chienworks wrote on 4/18/2004, 7:58 AM
Part of the extra time is probably things like caching the files, writing the lead in & out, creating the directory, etc. Also keep in mind that a file encoded at a higher bitrate will take longer to burn than a file at a lower bit rate, all other things being equal. The burn time is related to the number of bytes, not the duration of the video.
Randy Brown wrote on 4/18/2004, 8:06 AM
>>I don't get it. What's wrong? Burning faster then 2x should take less time.<<
Perhaps my example using two burners with 2 different speed capabilities was unnecessary. Let's just take the Toshiba: when I select 2x for an 8 min. mpeg2, it takes 14:32 (close to 1/2 x right?)


>>If you've confirmed that the mpeg is 8 minutes long, why wouldn't it be? <<
huh?

>>Did you put the DVD's in a player and check the time?<<
yes sir
Thanks for the reply Happy,
Randy
Randy Brown wrote on 4/18/2004, 8:12 AM
>>The burn time is related to the number of bytes, not the duration of the video. <<
Understood Kelly, but using the same template for all of my projects, the 1x, 2x, 4x are pretty much in relation to the time it takes to burn them (ie a 2min. mpeg2 burned at 2x takes about 1 min.). I was just curious as to why this particular job is so drastically different.
Thanks Kelly,
Randy
johnmeyer wrote on 4/18/2004, 10:19 AM
If you have any menus to encode, that will be an additional time, not related to 1x, 2x, etc. Same is true of audio encoding. Check your Optimize window to see how much encoding is going on.
B_JM wrote on 4/18/2004, 11:42 AM
if one is using the proper compatibility mode - it must burn a min. of 1 gig to disk (2 gigs - even of raw data is really correct).

but also reported burning speed by MOST burnng apps are not correct..
Randy Brown wrote on 4/18/2004, 12:13 PM
>>If you have any menus to encode, that will be an additional time, not related to 1x, 2x, etc. Same is true of audio encoding. Check your Optimize window to see how much encoding is going on.<<

No menu per se, just an image to click and start the video. The 1st burn just compressed the audio (to AC3) but after that it was just a matter of burning (maybe I don't understand your statement).

>>if one is using the proper compatibility mode - it must burn a min. of 1 gig to disk <<

Really?! I"ve never heard that.

Well I just about have them all burned now anyway so no big deal...thanks for keeping me company during the monotaneous process though : )
Randy