Mp4: can't render to, in V10, any ideas?

ken c wrote on 3/27/2015, 2:39 PM

hi - I'm trying to render to mp4 from within V10, which I created it in

settings: 975x450 px standard settings, for a 3-minute video, gives an error saying couldn't determine why, when trying to render to either Sony AVC mp4 or MainConcept Mp4.

i do file/render as, it starts then immediately says 'an error occurred while creating the media file myfile.mp4 the reason for the error could not be determined."

Main thing I need is an mp4 (for mobile to be able to see) to play in jwplayer...

any tips on doing a standard mp4 render? I'm new to mp4, normally I render to avi or wmv ... thanks if any ideas :-)

p.s. i tried loading v10-created veg in V13, any render attempt from v13 for anything crashes though...odd v5-12 render fine

cpu setting only didn't work, fixes outlined here:
http://www.sonycreativesoftware.com/Forums/ShowMessage.asp?Forum=4&MessageID=787783

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UPDATE: finally SOLVED, will work by importing to V12 and render MainConcept mp4 CPU only. V13 & V10 crashed. Set up customized version of 1080p template w/correct pixel resolution.

Glad I keep V10/11/12/13 installed...to test. Only worked on V12. makes no technical sense whatsoever, they're all installed on same win7 64-bit pc, but hey ghosts in the machine, gotta love vegas bugs; throw projects into multiple versions til something sticks, my tried n true method..

Comments

John_Cline wrote on 3/27/2015, 6:01 PM

h.264 encoding really prefers image dimensions which are equally divisible by 8 both vertically and horizontally, 975x450 doesn't meet that requirement in either dimension.

dxdy wrote on 3/27/2015, 6:35 PM

You didn't by any odd chance have a space in the output file name, did you?

ken c wrote on 3/28/2015, 12:35 PM

thanks very much John, I was wondering about that, re pixel dimension; in the future I'll set project height/width to be divisible by 8; good to know.

no re space in title

final render tho 200Mb for mp4 (default settings), only 48Mb for high-res wmv same project output. i used to render to wmv, then convert to flv, though with no flash on mobile ipads, I'll need to render to mp4 from now on for html5 compliance/mobile.

any thoughts on render quality differences (I'm using project default) for internet video? haven't checked/rendered to medium-quality, would like to get video size down to 80-120Mb vs 200Mb default render, and still look good via jwplayer on site

lewesgoalie wrote on 5/23/2015, 4:25 PM

I am now having this trouble in Vegas Pro 11. Worked fine for a long time. Now it crashes, says it doesn't know why. Other formats work, just not the MP4. This was a final render on this project, previous renders worked fine.

musicvid10 wrote on 5/23/2015, 4:51 PM

Divisible by 4 is fine with Vegas encoders, even by two in Handbrake is OK.

balazer wrote on 5/23/2015, 6:21 PM

From what I remember about the Mainconcept AVC compressor in Vegas 10, it just doesn't like certain combinations of encoding parameters. CBR, for example, didn't work at all. Also, rendering fails when the output reaches 4 GB. You can experiment with different encoding parameters.

But for the best quality for the given bit rate, I'd recommend using a different encoder, such as Mainconcept MPEG-2 at 80 Mbps CBR, or Sony YUV AVI, and then recompressing using ffmpeg or some other third-party compression software such as HandBrake. ffmpeg will convert the input without any unnecessary color space conversion or level remapping, and its libx264 encoding offers the best possible encoding when you select the encoding parameters carefully. It's way better than that Mainconcept junk.

musicvid10 wrote on 5/23/2015, 6:43 PM

The differences between x264 and Mainconcept AVC show up below 10 Mbps. Above that, they're virtually indistinguishable. You make it sound so . . .

balazer wrote on 5/23/2015, 7:40 PM

ken c said he is targeting very low bit rates for mobile delivery, and yes, that's exactly where x264 significantly outperforms Mainconcept.