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Audio lost after converting .avi file to mpeg dvd

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cecilia ruiz-smithAudio lost after converting .avi file to mpeg dvd
by on Aug 16, 2011 at 3:11:05 pm

Hi, not sure where to post this question. I used after effects to render my movie render settings: dv settings, output: lossless

the AVI file plays fine with the audio and the images intact but after I convert it to MPEG2 DVD using adobe media encoder, everything comes through except the audio. The movie contains both mp3 and wav files.

settings I used in media encoder: format: mpeg2-dvd, preset: match source attributes. export video checked, export audio checked, I kept the audio format settings: audio format: pcm (codec: pcm audio)

max render quality, checked.
=========
Movie looks good but my audio is gone? Why am I losing the audio track? Please help! Thanks you


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Dave LaRondeRe: Audio lost after converting .avi file to mpeg dvd
by on Aug 16, 2011 at 3:19:22 pm

Convert that mp3 audio to either wav or aiff first, then try again. AE hates mp3 or any kind of compressed audio.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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cecilia ruiz-smithRe: Audio lost after converting .avi file to mpeg dvd
by on Aug 16, 2011 at 3:21:58 pm

thank you. I'll give it a try.


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cecilia ruiz-smithRe: Audio lost after converting .avi file to mpeg dvd
by on Aug 16, 2011 at 4:31:19 pm

Hi Mr. LaRonde

I converted the mp3 sound files into wav and added them to my movie. Exported from ae with the same settings,then converted the .avi into mpeg dvd using adobe media encoder. The audio is still gone. What else could I be doing wrong?


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Dave LaRondeRe: Audio lost after converting .avi file to mpeg dvd
by on Aug 16, 2011 at 4:44:41 pm

Did the audio get multiplexed into the video track, aka muxed? It can happen. You can double-check by opening the file in question in MPEG Streamclip (freebie once you google it).

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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cecilia ruiz-smithRe: Audio lost after converting .avi file to mpeg dvd
by on Aug 16, 2011 at 4:55:16 pm

Muxed? I've never heard that term before but I always love learning new stuff. I'll try your suggestion right away and see what I come up with. If it turns out that the audio got muxed, what would be the next step?

thanks again for helping me out.


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cecilia ruiz-smithRe: Audio lost after converting .avi file to mpeg dvd
by on Aug 16, 2011 at 5:37:11 pm

Hi, I'm not sure what to look for here but here's the stream info from the mpeg streamclip software:

Stream: MAINtimeline-customAVI.m2v
Path: K:staffcrsCRSWEB_GRAPHICSRESCO PROJECTMovie testsMAINtimeline-customAVI.m2v
Type: MPEG elementary stream

Duration: 0:00:25
Data Size: 19.03 MB
Bit Rate: 6.37 Mbps

Video Tracks:
224 MPEG-2, 720 x 480, 16:9, 29.969999999999999 fps, 7.00 Mbps, lower field first

Audio Tracks:

Stream Files:
MAINtimeline-customAVI.m2v (17.85 MB)
========================
since no audio track info appears in the stream info, does this mean my file is multiplexed? What's the next step?...


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Dave LaRondeRe: Audio lost after converting .avi file to mpeg dvd
by on Aug 16, 2011 at 6:04:00 pm

Ah. An m2v file contains no audio, but it's essential in making an authored DVD.

You'll need to export the audio separately. I make ac3 audio files for use in DVD Studio Pro, but you may want to make another kind.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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Walter SoykaRe: Audio lost after converting .avi file to mpeg dvd
by on Aug 16, 2011 at 6:02:52 pm

[cecilia ruiz-smith] "Exported from ae with the same settings,then converted the .avi into mpeg dvd using adobe media encoder. The audio is still gone."

The MPEG2-DVD presets save the audio to a separate file for muxing during authoring (for example, with Encore).

Walter Soyka
Principal & Designer at Keen Live
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
RenderBreak Blog - What I'm thinking when my workstation's thinking
Creative Cow Forum Host: Live & Stage Events


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cecilia ruiz-smithRe: Audio lost after converting .avi file to mpeg dvd
by on Aug 16, 2011 at 6:25:33 pm

ok. the files I'm seeing after converting the .avi file into mpeg2-dvd are:

projectfilename.wav (I can hear it when I play it separately)

projectfilename.m2v
(when I play it, there's no audio track, just the movie )

projectfilename.xmpses

projectfilename.xmp


So I guess I have to combine the .wav file and the .m2v file in another software (such as adobe encore) to get the audio track to play? I was hoping that the conversion from .avi to mpeg2-dvd would include the audio track. Isn't this supposed to be the case?


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Walter SoykaRe: Audio lost after converting .avi file to mpeg dvd
by on Aug 16, 2011 at 6:45:04 pm

[cecilia ruiz-smith] "So I guess I have to combine the .wav file and the .m2v file in another software (such as adobe encore) to get the audio track to play? I was hoping that the conversion from .avi to mpeg2-dvd would include the audio track. Isn't this supposed to be the case?"

What do you want to do next with this file? In other words, why are you compressing to MPEG-2?

If you want a muxed MPEG-2, use one of AME's MPEG-2 presets (not MPEG2-DVD).

Another tip -- don't render to DV for your intermediates. Render lossless (or Quicktime PNG) instead. The file will be bigger, but significantly higher quality.

Walter Soyka
Principal & Designer at Keen Live
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
RenderBreak Blog - What I'm thinking when my workstation's thinking
Creative Cow Forum Host: Live & Stage Events


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cecilia ruiz-smithRe: Audio lost after converting .avi file to mpeg dvd
by on Aug 16, 2011 at 10:53:47 pm

Hi, I'm creating a DVD (standard ntsc dv widescreen), this is why I selected the mpeg2-dvd preset from media encoder .
Isn't this correct?


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Walter SoykaRe: Audio lost after converting .avi file to mpeg dvd
by on Aug 17, 2011 at 2:12:56 am

[cecilia ruiz-smith] "Hi, I'm creating a DVD (standard ntsc dv widescreen), this is why I selected the mpeg2-dvd preset from media encoder . Isn't this correct?"

The MPEG2-DVD preset is appropriate, then, but you'll need to bring both the M2V video file and the WAV audio file (or AC3 audio file, if you use Dolby audio) into an authoring application like Encore to make your DVD.

Alternately, you could mux the MPEG-2 into a single MPG file with both audio and video within AME in the Multiplexer tab -- but you'll still need to actually author the DVD with something.

Walter Soyka
Principal & Designer at Keen Live
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
RenderBreak Blog - What I'm thinking when my workstation's thinking
Creative Cow Forum Host: Live & Stage Events


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cecilia ruiz-smithRe: Audio lost after converting .avi file to mpeg dvd
by on Aug 23, 2011 at 8:37:16 pm

thank you for your guidance...my project is working fine now!


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cecilia ruiz-smithRe: Audio lost after converting .avi file to mpeg dvd
by on Aug 16, 2011 at 6:36:34 pm

Oh. Now I understand....I guess I was hoping for the same results as converting to mpeg4. that file format retaines the audio track. I thought converting to mpeg2-dvd would do the same. Oh well...at least I learned a valuable lesson.

You guys at creative cow are amazing! thank you

_cecilia


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ljiu youeRe: Audio lost after converting .avi file to mpeg dvd
by on Aug 13, 2013 at 2:09:49 pm

here a tips : how to convert avi to mpeg2


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