MKV to AVI

[sance]

i think this is not a standard issiue, i have tryd all other tutorials nothing has worked.
i will not explain whole story as it would be too long, i will just explain my current problem.

i have a MKV file anime which contains 2 audio's (japanees and english) and subtitles.
my problem is that i can't convert the audio to wav or mp3 so i can make it one with the avi (which is xvid).




my plan is to;
- DIRECT stream copy the video

- Demux the subtitles as .srt

- Demux the audio to .wav or mp3

- Open the Direct streamed video with virtual dub

- go to the streaming list and add the demuxed audio and then save as avi.

but the problem is i can't demux the audio as i mentioned before

this is what i did

- selected audio from stream list

- full process mode

- go to compression tab

- selected Lame mp3

- slected value went back and demux

this is what error i receive when try to convert the audio..




i hope to get some help, i tryd everything i knew and any info i could find but still no luck, sorry if i sound wierd i spended my whole day trying to make it work.

help help help

[yoda313]

Run it through gspot and let us know what the audio codec is. If it really is wav it should work like normal but obviously it isn't for you.

[Ai Haibara]

Actually, according to the pictures above, it looks like AAC.

sance: Actually, it's a better idea to use MKVExtractGUI (don't forget to install the latest version of the underlying mkvtoolnix) to demux the MKV streams, rather than use VirtualDub or one of its variants. You should be able to process the resulting streams any way you want, then mux them together as an AVI in VirtualDub, or any other utility for muxing AVIs.

[sance]

thx for your replays

i have the latest version MKVExtract/toolnix, i tryd this before,

when i load the MKV file with MKVEXtract, i select the audio and click on "extract", it extracts the audio in .aac format which plays fine with VLC player/ Media player classic, but still i can't convert this .aac file to desired .wav .mp3 so i can mux it with the video.

where do i go from here?

[Baldrick]

have you tried any aac to wav tools? like dbpoweramp.

[sance]

i will try it right now, but i did try "belight" 0.22b, after converting the aac i receive .mp3 file which is 0bytes.

[Ai Haibara]

You can also try the Transcoding Wizard in VLC, since you mention you're able to play it in VLC. Load the AAC file, then select Wizard from the File menu (or hit Ctrl-W). Select "Transcode/Save to File" and click Next. You should then be given more options for the conversion.

I personally prefer dbPowerAmp, though. If you do use it, however, you'll need to install an AAC codec for it, I believe. (from dbPowerAmp's own Codec Central page)

[sance]

thx a lot that did the trick, i just wonder why they made it so complicated.

[sance]

there is another problem now, i can play the anime on my DVD but it has "lag", like out of sync and stuff.

now i am not sure what the problem might be, is it the video or the audio? which is cousing the lag, or should i spend hours encoding video.




now i am thinking, would it help if i lower the audio encoding value, maybe to try 44100Hz and bitrate of 160Kbps?

this is a screenshot from the original .MKV file while played in Media Classic




and this is a screenshot after i de/muxed the video and audio also from media classic.




so when i played this in my DVD player, it seems that the video is lagging and audio continues to play, and then the video would catch up after few sec but still not show all the frames.



edited ----

i want to show a screenshot from another anime that i also converted from MKV to AVI, and this one doesn't have this problem, it plays smooth.


screen friom the avi after it has been converted to.

[Ai Haibara]

Personally, I'm not sure... the video may have been VFR (Variable Frame Rate), but I'm no expert. Others (especially celtic_druid ) might be able to better help you with this.

(I usually suspect VBR audio, first, in sync problems... but in this case, I don't think AAC can be VBR... can it? Or did you re-encode the AAC to a VBR MP3?)

[celtic_druid]

aac can definatly be VBR. VBR isn't an issue for mkv though.

[sance]

as i remember now i had similiar problem a while ago,
i had burned "Season 4" and "Season 5" so i could watch it on DVD, but then to my suprise all "Season 4" videos have had same problem as i described above, "Frame rate drops, lag, while audio was still playing".

i was thinking maybe i burned it too FAST and it got some errors, so i burned again with 4x speed and the problem was still there.

Next i tryd "Season 5" video which is on the same DVD disc, but then Season 5 played without any problem.

here are few screenshots from both season 4 and 5, if some experts would have time to anylise and compare both, maybe this way we could figure out real problem.

--- Season 4 - which doesn't play smooth.



--- Season 5 - plays without any problems

[AlanHK]

there is another problem now, i can play the anime on my DVD but it has "lag", like out of sync and stuff.
...
and this is a screenshot after i de/muxed the video and audio also from media classic.


edited ----

i want to show a screenshot from another anime that i also converted from MKV to AVI, and this one doesn't have this problem, it plays smooth.

Notice the audio of the one with sync problems is sampled 44,100 MP3. DVD sound should be 48,000 MP2 or AC3, as is the one that "plays smooth". Other things also not to DVD spec: frame rate should be pulled down to make it 29.97. I'm surprised it played at all.

[sance]

Notice the audio of the one with sync problems is sampled 44,100 MP3. DVD sound should be 48,000 MP2 or AC3, as is the one that "plays smooth". Other things also not to DVD spec: frame rate should be pulled down to make it 29.97. I'm surprised it played at all.

hmm, how do u explain that "Season 4" videos are not playing, (as u can see on the screenshots two posts before), they seem to be 48,000, and "Season 5" which is "44,100" plays with no problem.

now i am thinking, is it the audio or video which is cousing the problem.

[AlanHK]

hmm, how do u explain that "Season 4" videos are not playing, (as u can see on the screenshots two posts before), they seem to be 48,000, and "Season 5" which is "44,100" plays with no problem.

48000 is the DVD spec. Maybe your player is more relaxed about standards.

https://www.videohelp.com/dvd.php#tech

Audio:
48000 Hz
32 - 1536 kbps
Up to 8 audio tracks containing Dolby Digital, DTS, PCM(uncompressed audio), MPEG-1 Layer2. One audio track must have MPEG-1, DD or PCM Audio.