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Old 09-22-2007, 04:01 PM   #1
sir-lancealot
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avi -> dvd convert but burn's with no audio?


The title says it all, using http://www.linuxquestions.org/linux/...dia/AVI_to_DVD
steps, I have a converted actually 2 different .avi files into the dvd_movie.mpeg movie.

I don't have a sata burner (long story with fc7/motherboard,etc.) so I madde the mpeg, moved to another fc7 machine and burned using k3b. Burned fine but no audio!

Tired doing it to a windows machine and roxio gave an error saying it doesn't support ac3 audio.

Any ideas or help is appreciated.
 
Old 09-22-2007, 04:46 PM   #2
David the H.
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Did you get any errors in output when you converted the files? Did you test-play the intermediate (.m2v and .ac3) files and the completed .mpeg in a software player before you burned it to disk? Does the burned disk work in some players but not others? In short, you need to determine where in the process the error is occurring, and give us more detail on what you did.

Anyway, there are easier ways now to create dvd video than with that tutorial. For example, I prefer to use avidemux, a convenient gui transcoding frontend, for video conversion. But for real ease-of-use, there are programs like Tovid and DeVeDe which will do everything listed in the above tutorial for you, and they will even set up nice dvd menus so you can actually navigate buttons instead of only having autoplay.

Finally, you can create even fancier menus with a real gui authoring program (frontends for dvdauthor with additional graphics features added). I personally recommend dvdstyler. It's fairly powerful without being difficult to use.
 
Old 09-22-2007, 05:27 PM   #3
lebabyg
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I agree with David. I use Avidemux to convert my avis to DVD format. Takes about 5hrs (on my 1.8GHz Laptop) when you do 2 passes but the quality is excellent. What i normally do is boot into Blackbox and leave avidemux doing a batch conversion of a load of .avi files. I then use Qdvdauthor to make the actual DVD. Hope this helps.
 
Old 09-22-2007, 05:37 PM   #4
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No errors (that I saw) on the convert. As for playing, yep even now I can open the dvd_movie.mpeg and it play's video / audio perfect.

I am going to take both your advice's and re-endode using Avidemux. I am still not sure as I said as I can play the final, but I am going to play for the next few hours and report back with an update / status or just cry for help

Thanks for 2 prompt replies.

Lance
 
Old 09-22-2007, 06:26 PM   #5
David the H.
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So exactly when and where does the audio fail then? If the .mpeg plays then the problem has to be either with the dvd authoring or the playback device. Have you tried playing the disk on multiple players? Did you try mplayer, xine, a set-top player? Are you sure you have the proper codecs installed?

Are you certain the audio is within spec? The DVD specification has specific requirements for bitrate and format. This is more important for hardware players than software.

I should point out that avidemux is just a frontend. Depending on the module you choose, you'll actually be using ffmpeg or mpeg2enc for the video conversion (ffmpeg is much faster, but mpeg2enc gives better quality), and your AC3 is likewise processed by the same ffmpeg/libavcodec that all the other tools, including transcode in the above tutorial, use.

The big point I was making is that avidemux and the other tools make the process easier, and hopefully less error-prone. If there's some problem with the backend though, then any errors they cause will still persist.
 
Old 09-23-2007, 08:00 AM   #6
sir-lancealot
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I didn't see a spot where the audio just 'failed'. The mpeg played fine w/ audio, and I tried last night's suggestions.

With Avidemux, the 2 passes took about 2 hours total which ended with an mpeg file. That had audio playing back on the computer as well. I converted to dvd iso, burned (k3b) and this time I had audio.

Only problem with the audio is the music heavily outweighs the people talking. Naturally I tried another movie with the same result. If I turn up the volume on the TV (2 different players) to hear them talking, then music or background sound comes on, it's way to loud and you can barely hear the talking. After the convert to mpeg, should I be looking for a way to convert to a dvd type (making 2 folders audio, video) or simply burning as the mpeg should be fine.

Thanks.
 
Old 09-23-2007, 09:59 AM   #7
lebabyg
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What codec are you using to encode your audio? I use AC3 and i've never had any problems. This just produces a Video folder....
 
Old 09-23-2007, 10:03 AM   #8
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I'm glad you got it working this time. I wonder what the problem was before, bad audio or bad burning?

Anyway, there's no point in trying to separate out the audio and video. The AUDIO_TS folder is completely superfluous here. It's used only for dedicated hi-def dvd-audio disks and has nothing to do with dvd-video soundtracks. Dvd-video sound must be embedded in the VIDEO_TS vob files (vob files are really just mpeg-ps format containers for video, audio, and subtitle streams...they're really just your mpeg video renamed).

I don't know what you're burning exactly, but I'm betting the unbalanced sound comes straight from the source. I've found it increasingly common in modern cinema for the music and sound effects to completely overpower the dialog. It can be almost unbearable on a home system, IMO. The only way I've found to have reasonable playback sometimes is to ignore the surround sound audio completely and play only the simple 2-channel stereo. There may be some way to normalize the audio using sox or audacity or something, but I'm not sure. It may take professional audio equipment to really do it right.
 
Old 09-24-2007, 08:53 AM   #9
sir-lancealot
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SOLVED - avi>dvd no sound.

Well after the 1st burn (hp dvd writer, dvd-r) I swapped to my newer writer (sony, dvd+r) which I know shouldn't matter, but fact is it worked.

The 2 movies were (ok, nobody laugh) was a barbie movie I had from vhs and high school musical 2. The 1st one the music, background still overpoweres the speaking a bit, but the 2nd is perfect, so I will re-convert from the VHS to digital.

I also used devede, what a simple process also, but will look at the other suggestions, I just appreciate the amount of time and help you put in, well, I am sure my daughter appreciates it more

Regards,
lance
 
  


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