Audio not encoding at all.

[david_starling]

I'm using ffmpegX 0.0.9x. I have a video_TS from a DVD I'm trying to convert using mencoder (to DivX). I followed the "How To" on this exactly, but ffmpeg is not converting the audio. I've tried MP3 and AAC. I make sure the "Encode audio" is checked in the audio tab. I select the bitrate and channels and mode, I select the audio track I want encoded, I calculate the bitrate in the video tab using "auto" and then I hit "Encode."

An hour or two later I try to open it up in quicktime and it says it can't play the audio. I try VLC and it works, but I check the video properties and what do you know... the audio is AC3 at the original bitrate of the DVD. And of course, the filesize is way off.

Help!!! I don't want to demux and encode and mux manually. I was looking for an "all-in-one" solution. Thanks!

[david_starling]

I've also tried using other sources.. a DV file from iMovie and a .vob file instead of a VIDEO_TS folder, both with the same result. ffmpegX just won't encode the audio.

[david_starling]

Has no one had this problem at all? No one has any idea what this could be? I've tried everything, including reinstalling. Why won't my audio encode?? GAAHH

Any help would be great.

[BrunoP]

Well I've got a simillar problem, with MPEG2/AC3 movies.
(only VLC can play the audio)

When I try to convert it with ffmpegX 0.0.9x to an AVI, I loose the audio.
(if I open the new file, nothing appears for audio)

[david_starling]

My audio is still there, in the original format. I still haven't figured out how to fix this problem.

Has no one else encountered this before?

[grayner01]

I am also unable to decode or export the audio in files with AC3 audio. I am trying to convert recorded MP2 files from EYETV (Hybrid). I have tried several files, and they do work in streamclip - however, Streamclip has glitchy video decoding of some of my files so I cannot use it for all. Unfortunately AC3 is my only audio choice with the source files.

These files will play fine in VLC, but if I do a preview or export in FFMPEGX I get no audio at all. The codec gives the following error message when I exit from preview:

... Requested audio codec family [ac3] (afm-libac3) not available. Enable it at compilation. No accelerated IMDCT transform found...

... AC3/DTS sync failed ADecoder init failed
Cannot find codec for audio format 0x2000...

My guess is that AC3 was accidentally disabled on the release compile. Can anyone else confirm this?[/code]

[hazy_shade]

Well, here ffmpegX doesn't even recognice MP2-Audio in my MPEG2 files from my Linux VDR. So i can't convert them with ffmpeg into MP4 vidoes with Xvid Codec. I'm trying now AVI (Xvid) with mencoder. Before I had updated to 0.0.9xR2 and reinstalling the new binaries everything was fine. I tried now even 0.0.9x but it doesn't help. I don't have the last version I had used before on my PC anymore.
As I tried everything to solve that problem (reinstalling ffmpegX and all binaries, deleting the files in /Library/Application Support/ffmpegX) I suppose that might be a bug in ffmpegX or in the mpeg2enc.intel file. Mplayer can play the files with audio and i also haven't changed anything in my videos from my Linux VDR.

[DrDan]

Another newbie checking in. Just installed ffmpegx on MacOSX and it runs a treat on SOME movies I'd D/Led from the net (I'm trying to convert .MOV, WMV, MPG etc. into 320x240 MP4 so I can play 'em on my iPod). Other files it just plain can't "hear" the audio track that's plainly there when I use QuickTime Pro.

I have Flip4Mac so I can play .WMV's in QT Pro, but I suspect that it may be adding extraneous ugly "test pattern" stuff to some conversions...) It's all so hard to grok.

Is there a place where newbies can go where this is explained in words of two syllables or less? (Well OK, I think i might handle the occasional 3-syll woid). TIA.

[rubyroo]

Hi, another newbie with excatly the same problem as David - no audio! Plus I was doing all that has been mentioned in the above posts starting with VIDEO_TS files

I thought I'd have one last shot at trying to get it to work only this time I set the audio codec to "passthrough" with the box ticked for ncode audio. The video codec was set to H263 [.MP4] (mencoder).

SUCCESS!!! I have audio The picture quality is pants though, which it hasn't been up to now so just need to see if I can fix that.

hope this helps.

I'm new to video and have found very little to explain what the all the jargon means to a newbie, so a guide for beginners would be good!

[DrDan]

Well, FWIW rubyroo, I tried your suggestion -- but no joy on this end. And it looked like such a great idea too! Any general pointers/explanation for newbies on what to look for, anyone?

[rumplestiltskin]

David,

Do you have the QuickTime MEPG2 component from Apple? This runs about $20 (IIRC).

[rubyroo]

Sorry, I tried to re-create what I did earlier and it wouldn't work again for me either

I have no idea why it worked that time for me and added the audio, albeit with dodgy visuals. It seems all so hit and miss....

[Tusse]

I have noticed the same issue.

The file I'm trying to transcode is a mpeg-ts. It has both mp2 and ac3 sound in the stream. If use ffmpegX I get no sound in the output file. FfmpegX just doesn't include sound in the file.

Clip info:
 Software: MEncoder dev-CVS-060307-04:23-4.0.1
============================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Selected video codec: [ffodivx] vfm: ffmpeg (FFmpeg MPEG-4)
============================================================
Audio: no sound
Starting playback...

If I try manually from the console with this command

mencoder input.ts -o output.avi -ovc lavc -oac mp3lame -lavcopts aspect=16/9

I get mp3 sound in the file.

I have successfully transcoded .ts files before but I can't remember if I updated ffmpegx since.

Any thoughts?