streaming m2t files workflow?
by John Jinks
on
Oct 22, 2008 at 7:51:57 pm
I'm working on a job where the final deliverable will be an m2t file as in a Mpeg-2 streaming file.
Does anyone have workflow suggestions?
It's a 1920 x 1080HD 2 min. file rendered out of after effects. Would a full animation codec quicktime output then compress in an app like Compressor for the m2t file be the best solution?
Also what would be the best codec for Audio?
Thanks in advance.
J
Re: streaming m2t files workflow? by Dave LaRonde on Oct 22, 2008 at 8:39:42 pm
[John Jinks]"Would a full animation codec quicktime output then compress in an app like Compressor for the m2t file be the best solution?
Also what would be the best codec for Audio?"
If I had the luxury of being able to work in HD, that's exactly what I'd do.
But since I don't have much to do with m2t files, here's an ignorant question: wouldn't such a file have the audio multiples, or muxed, with the video?
Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA
Re: streaming m2t files workflow? by Danny Hays on Oct 23, 2008 at 3:23:42 am
What program are you using to make the m2t file? Most NLE's will export to m2t. After effects will too I believe, under the blueray preset, then select transport stream. The audio is included in an m2t file. m2t files are 1440 x 1080 w/pixels 1.333 Hope this helps.
Danny Hays
Re: streaming m2t files workflow? by John Jinks on Oct 23, 2008 at 4:59:32 am
Thanks for the response.
I'm working in After effects and tried using the Blu-ray setting as suggested . I haven't gone the AE/compressor route would like to export from AE if possible. In Ae I keep getting a render error that won't let the file render. The error says the Audio codec is incompatible and needs to be changed in the output module. The only thing that can be changed in the module for audio is the sample rate. I've tried both 44.1 and standard 48k and still the error. Any other suggestions?
Thanks again
Re: streaming m2t files workflow? by Dave LaRonde on Oct 23, 2008 at 4:15:28 pm
[John Jinks]"In Ae I keep getting a render error that won't let the file render. The error says the Audio codec is incompatible and needs to be changed in the output module."
Is the audio file in the comp anything other than aiff or wav? If so, you need to convert it to aiff or wav using a different application.
Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA
Re: streaming m2t files workflow? by John Jinks on Oct 23, 2008 at 6:02:19 pm
thanks all for the help. I've figured it out on my own using different settings. the audio is Aiff.
Basically you start with an Mpeg 2 format then adjust stream settings, a crucial one is the bitrate set to CBR around 15Mbps, I was using VBR before that's why I was getting incompatibility. Then set audio to Mpeg 1 layer 2 audio and all's well. I'm still not sold on this compression scheme as in any streaming codec you will have artifacts but it works pretty well.
Thanks again
