Skip to main content ↑ ↓

Notice

Please note that most of the software linked on this forum is likely to be safe to use. If you are unsure, feel free to ask in the relevant topics, or send a private message to an administrator or moderator. To help curb the problems of false positives, or in the event that you do find actual malware, you can contribute through the article linked here.
Topic: WavPack -hhx3 equivalent for SoX? (Read 2744 times) previous topic - next topic
0 Members and 1 Guest are viewing this topic.

WavPack -hhx3 equivalent for SoX?

Encoding to WavPack with SoX always produce a -hh .wv file, no matter what -C FACTOR is specified. Is there any way to use the extra encode processing -xn with SoX?

Re: WavPack -hhx3 equivalent for SoX?

Reply #1 –
I just took a look at the SoX source and, yes, the only encoding mode ever selected is very high (-hh), with no extra processing.

I think the easiest thing would be to use the WavPack command-line encoder to re-encode to the settings you desire after generating the WavPack file with Sox. Since it's lossless you're just wasting a little time and the WavPack command-line program makes this really easy. I actually work this way with the abcde CD ripper which doesn't allow me to configure as much as I'd like. I assume if you're using SoX then using another command-line program would not be a stretch.

I haven't build SoX in a long time, but of course it would be pretty easy to modify the source and re-build to use the mode you want, or even use the compression factor to choose modes sort of like FFmpeg does.

Re: WavPack -hhx3 equivalent for SoX?

Reply #2 –
you can also maybe output data to stdout as uncompressed and put it as input to wavpack, then there's also no need for temporary files. wavpack supports pipe input, I don't remember if sox supports pipe output but I'm almost certain it does.
a fan of AutoEq + Meier Crossfeed

Re: WavPack -hhx3 equivalent for SoX?

Reply #3 –
I tried piping sox to wavpack and works very well but the metadata is lost.

Ffmpeg with -compression_level 3 seems a good alternative as it keeps metadata and embedded cuesheet, and produce an identical size, bitrate and MD5 file as the two-step-transcoding with sox and wavpack (same audio MD5), but with mediainfo or fb2k it appears as WavPack normal instead of high, and also the attached images (covers, etc.) are lost.

I will try to rebuild SoX, as it seems to be the best long term solution.

Re: WavPack -hhx3 equivalent for SoX?

Reply #4 –
metadata can be copied over as a separate step with another tool(s)... but that's a bit more complicated
a fan of AutoEq + Meier Crossfeed

Re: WavPack -hhx3 equivalent for SoX?

Reply #5 –
Quote from: Ophy on
... but with mediainfo or fb2k it appears as WavPack normal instead of high ...
It is a known issue that encoding parameters (e.g., high or fast, extra modes) are not stored by FFmpeg, even though the parameters are used during encoding. I have never considered this a really big deal because it's informational only, but I might look into making a patch for it when I do some other FFmpeg work.

I have not tried it, but FFmpeg can also use libwavpack for encoding, in which case that information would be stored (but I have no idea what else might be different).