Confusion over MPEG2 Codec / GOP settings

[Andy George]

Render lossless from AE and then take it into Adobe Media Encoder.
You should find all of the appropriate GOP settings under video>GOP Settings.

-Andy George
Senior Editor
http://www.chiselindustries.com

[Andy George]

Oops. Read to fast. Those are the same settings you already found.
So what you want to know is how to create a [4:2:0 GOP of 15] using the
GOP settings listed. Hopefully someone smarter than me on compression issues can chime in and answer that.

Regardless, AE does a poor job as a compression tool. Rendering lossless out of AE and taking it into Media encoder is going to give you a cleaner final output.

-Andy George
Senior Editor
http://www.chiselindustries.com

[Craig Russillroy]

Hi guys sounds to me as a DG setting for tvc distribution – adobe media encoder is your friend here

You can try a test name the sequence and close ae – open media encoder and import ae sequence select your comp – now open the mpeg2 template.

Fyi ntsc gop for long gop is 15 and pal is 12

When I get into work I can make up a template that you can import into ame for future ?

Hope this helps – btw ame is the only other software that is free that can also do 422

I do prefer telestream products for this service – if you are going to do this often invest in episode pro from telestream

[Alejandro Diaz]

Thank you all for your replies!

Well, as of right now the volume of work for this kind of distribution seems like it will be limited, so we might just have someone do the encode for us from my uncompressed/lossless sequence to make sure everything is right, but I still want to learn (and understand) how to, and what is going on, and if we end up doing more of this type of delivery, possibly purchase a license for the software you have recommended.
Until now I haven’t had to worry since most of it has been usually just smaller videos that are placed on a website or as part of a presentation, so a LOT of flexibility regarding output files.

Craig, that been said, I still would be interested in that template, as I mentioned, really interested in understanding all of this, so the more I play around and see the various results and see what people are doing, etc, the better I will be down the road.

Thanks once again!
-Alex

[Craig Russillroy]

No worries

Here is the link – created in CS5 hope it helps !

https://f1.creativecow.net/1232/1920×1080-ame-mpeg2-encoder‘>1232_1920x108035mbps2997.epr.zip

hope it helps !

Adstream
London, England

Mac Pro – 8gig ram – FCS 3 – CS4 – Cinema 4D, Flip Factory, Rhozet, Episode

[Alejandro Diaz]

Thanks once again!

-A

[Scott Hutchins]

Hi,

I work as an inhouse editor delivering PAL commercials in the UK, I’m having slight brain melt trying to export an HD master 1920×1080 uncompressed quicktime (edited and finished out of house), as a 720×576 16:9FHA mpeg2 from Adobe Media Encoder CS6 to match adstream’s preferred delivery spec, this appeared to be the most relevant section to post this so I hope this is ok! (first time poster long time reader etc etc).

I can’t seem to find a true anamorphic setting in media encoder. It appears the only way I can deliver is export the HD from FCP7 with a photo-jpeg codec at PAL SD resolution and it’ll resize ok, but I think the quality is poor. Or resize to 1024×576 in after effects, bring in to FCP, clock and export with photo-jpeg codec, which is accepted by adstream and was part of my handover from the previous editor (haven;t had any problems with that so far)

When I see the TVC on telly it doesn’t appear as high in quality as the other TVC’s preceding and following it, and I thought if I could just clock the 1920×1080 uncompressed file in FCP, export uncompressed 1920×1080, bring in to encoder, export at the preferred adstream format (mpeg2 program stream, 625/50 PAL, 50Mbps CBR I frame only, 422P@ML, 4:2:2, 720×576, upper field first, mpeg audio layer-2, 384kbps, 48khz, stereo) it might look much much better when viewed in the home on a pretty standard widescreen TV. I was also a bit concerned about the ‘stretch to fit’ option in encoder, if I can find a way of creating the correct PAR then I was then worried that by then using ‘stretch to fill’ to fill the dimensions then the image won’t stretch horizontally when shown on a widescreen TV and everyone will have eggs for heads. Cutting off part of the image using scale to fit wouldn’t go down well with my superiors.

I know adstream employees frequent this forum, and they all seem nice as pie so I was really hoping one of them might pick this up. I’ve tried contacting adstream directly but all I can do is send in trial runs for QC and wait for an email to say its failed, eek.

Sorry for the epic message!! If i’ve missed some important info please just say, i’m very very new to posting questions in forums. Thanks in advance!!

Scott