Re: [dvd::rip] Sound distortion

[Jörn Reder <joern@xxxxxx>]

Jurek Bartuszek wrote:

> Sure, here it is:
> 
> koxta@hell ~/plum/mein_teil/vob $ tcprobe -i 006/
> [tcprobe] MPEG program stream (PS)
> [tcprobe] summary for 006/, (*) = not default, 0 = not detected
> import frame size: -g 720x576 [720x576]
>      aspect ratio: 4:3 (*)
>        frame rate: -f 25.000 [25.000] frc=3
>                    PTS=0.2001, frame_time=40 ms, bitrate=6000 kbps
>       audio track: -a 0 [0] -e 48000,16,2 [48000,16,2] -n 0x2000 [0x2000]
>                    PTS=0.1201, bitrate=448 kbps
>                    -D 2 --av_fine_ms 0 (frames & ms) [0] [0]

Hmm, looks normal to me. transcode detected an AC3 stream (that's the 
"-n 0x2000" in the output) with 448 kbps: nothing special.

You could transcode a smaller test chunk with AC3 passthrough enabled to
see, erm, hear ;) if the original stream is already distorted in some 
way.

If not, you should encode to Ogg/Vorbis. If this works, something with 
your transcode / MP3 encoding is broken, if not we have a more general 
transcode audio processing problem. Do you use any audio filter? Do you
use volume rescaling? Probably rescaling is too aggressive, so the sound
distorts?

Regards,

Joern

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LINUX - Linux Is Not gnU linuX

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