Sizzle and Frequency Shift

[CGuy]

I am pretty sure I have the solution to this, but I wanted to consult the forum first. (Especially as the solution will potentially be time consuming)

I am using Sizzle (v0.5) to collect multiple VCD compatible movies onto 1
disk. These are standard muxed MPG1 files with 224/44.1 audio tracks.

When the image is done, it plays fine in DVD Player, as does the resulting
disk - however, after trying the disks in a couple of standalone players I find that the duration is fine but the audio track is frequency shifted up, even though the audio and video tracks stay synched throughout. It is not much of a shift, but it is noticeable and annoying.

I will next try re-encoding the audio to 48k, and seperately adding the demuxed video and audio tracks - although this adds another chance for messing up the DVD encode. If this works, I will try doing the original conversion to standard VCD video but with 48k audio - just to make things neater.

So, after all that, I was wondering if anyone else had run across this, and if there were any thoughts from the collective wisdom? Also, any suggestions as how to "fix" the already made DVDs?

Thanks, Cguy

[tgpo]

Never head of that before. I've created a number of DVD using Sizzle with all types of video content and haven't ever run accross that before. Keep us informed of if your solution works.

[CGuy]

Well, the demuxing and conversion appears to have worked. I guess I will next try doing the conversion and changing the audio to 48k and leaving the file muxed (just hate having the extra step). Of course, I am still baffled why DVD Player had no problem dealing with these disks.

So, any thoughts on the correction to already encoded DVDs? Is my best bet using OSex, pulling out the original MPGs and then re-encoding?

Thanks, CGuy

[CGuy]

As I figured (and hoped) the muxed mpg1 (w/ 48kHz audio) works fine.

No responses on my converting already made DVDs?

CGuy

[galactica]

this sounds more like dvd player problems than sizzle problems

i make dvd's with both 44 and 48khz and my dvd player could care less

perhaps your is more specific for 48khz audio
its not hard to convert 44 into 48 so it shouldnt be too much of a problem.

[CGuy]

galactica,

Probably your right that it is the DVD player. But my understanding was that sizzle was supposed to change 44k MP2 to 48k. If I am mistaken about this, then that at least would make sense.

Of course, the fact that I now have ~30 DVD's made with 44k (making the voices sound like post-puberty chipmunks) is annoying. It might be easier to find a new DVD player than to remake the originals. (and after subtracting $30 for new blanks probably not too expensive!)

CGuy

[galactica]

if it does its something thats new to me!

email Henry [get his email off his sizzle webpage] if you really want to get the scoop on it

I always just convert the audio over myself before i go in and add the audio. Here's how i do it [as pulled from one of my tutorials]

Step 3. Change AUDIO to 48Khz (optional)

This is where part of the player compatibility comes into effect.* VCD/SVCD usually contain their audio as 44Khz mp2 files.* Traditional DVD spec is 48Khz @ 224kb/s and can be mp2 files.* You should convert the audio file to DVD spec as described below.** !!HOWEVER!! some standalone players (like mine for example) can play DVD’s with 44Khz audio and this step does not need to be done.* It’s up to you to decide if you want to do this… or if you want to skip it, use DVD-RW and see if it works or not.* If the disk doesn’t play you will then most likely have to do this step

1.**** Open FFMPEGX
2.**** Locate the PART1.mpeg file by clicking OPEN and selecting PART1.mpeg
3.**** Set the VIDEO CODEC to Passthrough (ffmpeg)
4.**** Unclick ENCODE VIDEO from the as seen next to the VIDEO CODEC pull down menu.
5.**** Click on the AUDIO tab
6.**** Change the AUDIO CODEC to .MP2
7.**** Set AUDIO BITRATE to 224 kb/s
8.**** Set SAMPELING to 48000 hz
9.**** Ensure ENCODE AUDIO is checked
10. Set your save location and save the file as PART1_48KHZ.mp2
11. Click ENCODE
12. Repeat for each PARTx.mpeg file you have from above steps

These audio files are now DVD spec and will be used in later steps

[thoughton]

Maaaaan Galactica, I'm never giving you MY email address if you just post 'em onthe net for all the world (and harvesters) to see ...

[galactica]

it makes no difference, he has it on his website just the same...
all i did was post it here for this person

no differnece since the email is just as avaliable on his sizzle website, and im sure we have ALL been there once or twice

[thoughton]

The difference is that it is HIS email address, and HE can post it wherever he likes. Furthemore I'll give you dollars to donuts that dvdrhelp.com gets many orders of magnitude more traffic than the sizzle homepage gets... Can you say spam?

[tgpo]

Can you say spam?

Spam. Yeah, I did it!

Dude, this site links to the sizzle site, thus e-mail trackers will follow this site to his and have his e-mail address just the same. Plus, if people didn't want other to give out their e-mail address, they shouldn't post it.

[thoughton]

Sorry, perhaps I went a little far with the spam thing , however I still dont agree with posting other people's email addresses on public webboards!

[galactica]

i took it out.......

but i still think it has the same probability of getting spammed from his site as it would on here... and if he makes his email public there, whats the difference if i post it here for this person..


oh well....... its old news now