Add patterns to --restrict-filenames for less character replacements

[pricejn2]

I use --restrict-filenames almost always, but have no need to replace spaces with underscores. Perhaps this could be done by implementing a replacement template similar to the -o output template?

[phihag]

Why do you use --restrict-filenames in the first place? I see a lot of people cargo-culting this option, so I'm quite hesitant to promote or even extend it.

[pricejn2]

I've got a few unresolved issues with multiple os, international file names, and irregular characters under php that I haven't been able to work around but that aren't actually related to youtube-dl.

This would be a nice feature, but I understand if you're going the deprecation route rather than enhancement.

[l3uddz]

Restrict-filenames is a very important parameter, would be a great shame if it was removed.. I do feel that it would be beneficial to be able to tell restrict-filenames to allow certain characters like spaces, brackets and & etc...

[phihag]

@l3uddz Instead of telling me that it "is a very important parameter", can you elaborate why you are passing it in in the first place? @pricejn2 Hinted at problems with OS configurations, but even that should be a thing of the past on a modern Unix system, where UTF-8 should be in use everywhere.

[l3uddz]

Sure, this might make things a little clearer at-least as to why its important to me...

D:\Documents\youtube>youtube-dl --extract-audio --audio-format mp3 https://www.youtube.com/watch?v=uBC2ns0rxNw
[youtube] Setting language
[youtube] Confirming age
[youtube] uBC2ns0rxNw: Downloading webpage
[youtube] uBC2ns0rxNw: Downloading video info webpage
[youtube] uBC2ns0rxNw: Extracting video information
[download] Destination: ►1 HOUR DUBSTEP_DRUMSTEP JUNE 2014◄ ?( ???)?-uBC2ns0rxNw
.m4a
[download] 100% of 57.24MiB in 02:12
ERROR: WARNING: unable to obtain file audio codec with ffprobe

D:\Documents\youtube>youtube-dl --extract-audio --audio-format mp3 --restrict-filenames https://www.youtube.com/watch?v=uBC2ns0rxNw
[youtube] Setting language
[youtube] Confirming age
[youtube] uBC2ns0rxNw: Downloading webpage
[youtube] uBC2ns0rxNw: Downloading video info webpage
[youtube] uBC2ns0rxNw: Extracting video information
[download] Destination: 1_HOUR_DUBSTEP_DRUMSTEP_JUNE_2014-uBC2ns0rxNw.m4a
[download] 100% of 57.24MiB in 02:05
[ffmpeg] Destination: 1_HOUR_DUBSTEP_DRUMSTEP_JUNE_2014-uBC2ns0rxNw.mp3
Deleting original file 1_HOUR_DUBSTEP_DRUMSTEP_JUNE_2014-uBC2ns0rxNw.m4a (pass -
k to keep)

[phihag]

That's why I'm hesitant to promote or keep --restrict-filenames - it looks like your problem is simply a malfunction of youtube-dl/ffprobe on Windows we didn't know about, so we should fix that instead of applying a bandaid.