When encoding a wav file with vorbis 1.0, I notice the following message:
[eds@crash eds]$ oggenc -q 5 grind1.wav
Skipping chunk of type "cue ", length 52
Opening with wav module: WAV file reader
Encoding "grind1.wav" to
"grind1.ogg"
What's this "skipping chunk" all about?
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On Tuesday 26 November 2002 10:51 pm, Eric Seppanen wrote:> What's this "skipping chunk" all about?WAVs are a type of "RIFF" file. All information in them, such as your audio data but also header data like sample rate and format, are contained in chunks. oggenc knows about the chunks that matter for WAV files, and will use that information to determine what the data is and how to interpret it. Some programs that write WAV files put in their own chunks, usually to hold some program-specific information, but sometimes (as it appears in this case) to pad some part of the file to a certain length. Since oggenc doesn't know about padding chunks -- and doesn't need to -- it just skips that chunk, and that message is telling you about it. AFAIK you can shut off that message, along with the rest of the noncritical messages, with -Q for quiet mode. Ken --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.
Eric Seppanen <eds@reric.net> said:> When encoding a wav file with vorbis 1.0, I notice the following message: > > [eds@crash eds]$ oggenc -q 5 grind1.wav > Skipping chunk of type "cue ", length 52 > Opening with wav module: WAV file reader > Encoding "grind1.wav" to > "grind1.ogg" > > What's this "skipping chunk" all about?It's a debug message. Either you're using a cvs build, or I accidently left it in in 1.0. You don't need to worry about it, anyway. A wav file consists of a number of chunks - typically, this is a "fmt " chunk (describing the format of the audio data contained within), followed by a "data" chunk (funnily enough, this contains the actual data). Your wav file has an additional chunk in it, which oggenc doesn't need to read, so it just skips over it. These extra chunks are occasionally produced by some programs (though not most). They're fairly useless but harmless. Michael --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.
Exist any software that cut (begin and end) Vorbis files without have to decode??? For cuts silences for example??? Thanks EduCa <p><p>--- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.