Compression Techniques Forum
by eggohead on Jun 12, 2006 at 1:18:11 am

does anyone know the best/easiest way to compress video for 3G2
on a Mac with FCP?

Re: 3G2
by daniel_l on Jun 12, 2006 at 11:09:09 am

sing Quicktime Pro conversion is the easiest/cheapest way of creating 3GPP/3G2 formatted content, however it's not the best quality. Xenon provides the highest quality the last time I did an evaluation
Sadly however, it's only available for the PC.

Video AllSorts

Re: 3G2
by eggohead on Jun 12, 2006 at 3:03:25 pm

shoot. I have a junk PC waiting for me at my old job, wish I had it now (for vidiator).
Anyway, I'm not sure whether or not I have QT Pro, I know I have QT
conversion within FCP, and it gives me the option of 3GPP/3GPP2.
If I were to compress my video with 3GPP2, any suggestions on settings to
use for high quality output?


Re: 3G2
by daniel_l on Jun 12, 2006 at 3:16:40 pm

Not trying to be funny but you've got the best chance of getting 'high quality' output from using a high quality source. That aside, very few people would consider anything at QCIF 12-15fps high quality. ;-)

That said, you have to work with your client to determine what is the mazimum data rate (and resolution if it's capable of more than QCIF) accepted by the playback device.

FCP comes with a QT Pro serial number so it should be unlocked.

It's difficult for me to offer an further advice on getting great looking material on the handset as so much depends on the content (sports, drama etc), the handsets capabilities, your source format etc etc.

Video AllSorts

Re: 3G2
by eggohead on Jun 13, 2006 at 10:39:03 pm

After trying it out a few times, it seems to be very similar to
compressing for web, in that the data rate makes the ultimate
difference in the picture quality.
Don't need perfect quality, just want it to look relatively clear without
any fuzz or distortion.
My source material is well lit, well shot and is compressed only
with FCP's DV-NTSC setting (kept at 720x480).
My issue is that my client says that he can't fit the video into his
mobile phone if it's over 240kb in size (but he's not very savvy
technologically). I don't have much experience with media storage
in cell phones. Does it sound about right that it'd have to be less
than 240kb just to fit in his phone?
When I compress at a data rate of 500kb/s the quality is fine (it's
a 30-second video), but the file size comes to 788kb. Should
this matter?

Re: 3G2
by daniel_l on Jun 14, 2006 at 9:37:47 am

The file size limit might be an individual file size limit imposed by the phone operator, it's unlikely a technical/memory limit of the device or it may just be that your client is mistaken.

The obvious choice given this 'limitation' is to lower the data rate; at QCIF 12-15fps, you should still be able to get decent quality output at 250kbps.


Video AllSorts

Re: 3G2
by eggohead on Jun 14, 2006 at 1:45:40 pm

Thanks. That makes a lot of sense. I'll see what i come up with at 250kb/s...