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Topic: problems playing some ac3 files (Read 4387 times) previous topic - next topic
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problems playing some ac3 files

hey folks,

i got problems playing some ac3 files with foobar. i already tried a lot of things but nothing worked.

what is really weird on this problem is that i only cant play some ac3 files... actually i can play them but the sound is very weird. it seems like the track is playing faster. when i open the file with vlc, everything is ok.

furthermore i have ac3filter and the foobar plugin foo_ac3.dll (2008-06-02 12:24:26) AC3 decoder 0.9.1 installed.

heres the MediaInfo of a file i can play without problems:
Format                      : AC3
Format/Info                  : Audio Coding 3
File size                    : 14.0 MiB
PlayTime                    : 4mn 21s
Bit rate                    : 448 Kbps

Audio #0
Codec                        : AC3
Bit rate mode                : CBR
Bit rate                    : 448 Kbps
Channel(s)                  : 6 channels
Channel positions            : Front: L C R, Rear: L R, LFE
Sampling rate                : 48 KHz


and heres the MediaInfo of a file i cant play correctly
Format                      : MPEG-2 Program
Format/Family                : MPEG-2
File size                    : 5.75 MiB
PlayTime                    : 1mn 47s
Bit rate                    : 448 Kbps

Audio #0
Codec                        : AC3
Bit rate mode                : CBR
Bit rate                    : 448 Kbps
Channel(s)                  : 6 channels
Channel positions            : Front: L C R, Rear: L R, LFE
Sampling rate                : 48 KHz

Menu #0
Codec                        : DVD-Video

so the difference is in "Format" and "Format/Family" and in the menu dvd

btw my sound card is creative extreme music and im using vista x64

help would be greatly appreciated

cheers!
nrs

problems playing some ac3 files

Reply #1 –
The input component doesn't support files encased in MPEG-2 streams. You'll need to demultiplex that file first.

problems playing some ac3 files

Reply #2 –
Quote from: kode54 on
The input component doesn't support files encased in MPEG-2 streams. You'll need to demultiplex that file first.


huge thanks  is there a foobar plugin which can demux those files? or which external app should i use? TMPGEnc freeware version doesnt support mpeg-2

problems playing some ac3 files

Reply #3 –
Avidemux can do that

problems playing some ac3 files

Reply #4 –
nope doesnt work

when i open the file, i get the message "This looks like mpeg. Do you want to index it?". When clicking yes or no then the error "could not open the file" recieves.

problems playing some ac3 files

Reply #5 –
You must click yes. Then an Index is created. The .vob must be on your harddisk because the indexfile is created where the .vob lies

problems playing some ac3 files

Reply #6 –
it doesnt matter if i create an index, i always get the error "could not open the file"
furthermore i have no .vob

is there a alternative to avidemux? it somehow got to work, since i can play the file with VLC

problems playing some ac3 files

Reply #7 –
where du you have the mpeg?

problems playing some ac3 files

Reply #8 –
You can try GraphEdit, but you will have to connect the MPEG-2 splitter to something like Matroska muxer filter, then split the AC3 out with mkvextract.

problems playing some ac3 files

Reply #9 –
it aint a .mpeg file

its an .ac3 file!

heres an example: http://www.file-upload.net/download-908199...namic-.ac3.html

what i've found out a few minutes ago is that i cannot play the last seconds of the song, it just skips to the next song... that could be a consequence of the file being played too fast.

problems playing some ac3 files

Reply #10 –
GraphEdit says it's an MPEG-2 file, by the presence of the MPEG-2 demultiplexer filter:



And there's the info you pasted above:

Quote from: nrs on
Format                      : MPEG-2 Program
Format/Family                : MPEG-2
File size                    : 5.75 MiB
PlayTime                    : 1mn 47s
Bit rate                    : 448 Kbps

problems playing some ac3 files

Reply #11 –
ah, i fail :/ sorry

can i somehow save the file with graphedit? doesnt seem so, right?

problems playing some ac3 files

Reply #12 –
You can try the method I used, which involved piping the output of the demultiplexer into Haali Matroska Muxer, then splitting it back out with mkvextract. This method or similar is required as the demultiplexer refuses to connect directly to the File Writer filter.