[bugfix] determine mime-type to use during ffprobe evaluation stage, don't bother checking against file extension (#3506)

* determine mime-type to use during ffprobe evaluation stage, don't bother rechecking by file extension

* set mjpeg content-type

* fix up tests expecting differing default values

vendor/codeberg.org/gruf/go-mimetypes/README.md

@@ -1,5 +0,0 @@
-# go-mimetypes
-
-A generated lookup map of file extensions to mimetypes, from data provided at: https://raw.githubusercontent.com/micnic/mime.json/master/index.json
-
-This allows determining mimetype without relying on OS mimetype lookups.

vendor/codeberg.org/gruf/go-mimetypes/get-mime-types.sh

@@ -1,42 +0,0 @@
-#!/bin/sh
-
-# Mime types JSON source
-URL='https://raw.githubusercontent.com/micnic/mime.json/master/index.json'
-
-# Define intro to file
-FILE='
-// This is an automatically generated file, do not edit
-package mimetypes
-
-
-// MimeTypes is a map of file extensions to mime types.
-var MimeTypes = map[string]string{
-'
-
-# Set break on new-line
-IFS='
-'
-
-for line in $(curl -fL "$URL" | grep -E '".+"\s*:\s*".+"'); do
-    # Trim final whitespace
-    line=$(echo "$line" | sed -e 's|\s*$||')
-
-    # Ensure it ends in a comma
-    [ "${line%,}" = "$line" ] && line="${line},"
-
-    # Add to file
-    FILE="${FILE}${line}
-"
-done
-
-# Add final statement to file
-FILE="${FILE}
-}
-
-"
-
-# Write to file
-echo "$FILE" > 'mime.gen.go'
-
-# Check for valid go
-gofumpt -w 'mime.gen.go'

vendor/codeberg.org/gruf/go-mimetypes/mime.go

@@ -1,47 +0,0 @@
-package mimetypes
-
-import "path"
-
-// PreferredExts defines preferred file
-// extensions for input mime types (as there
-// can be multiple extensions per mime type).
-var PreferredExts = map[string]string{
-	MimeTypes["mp3"]:  "mp3",  // audio/mpeg
-	MimeTypes["mpeg"]: "mpeg", // video/mpeg
-}
-
-// GetForFilename returns mimetype for given filename.
-func GetForFilename(filename string) (string, bool) {
-	ext := path.Ext(filename)
-	if len(ext) < 1 {
-		return "", false
-	}
-	mime, ok := MimeTypes[ext[1:]]
-	return mime, ok
-}
-
-// GetFileExt returns the file extension to use for mimetype. Relying first upon
-// the 'PreferredExts' map. It simply returns the first match there may multiple.
-func GetFileExt(mimeType string) (string, bool) {
-	ext, ok := PreferredExts[mimeType]
-	if ok {
-		return ext, true
-	}
-	for ext, mime := range MimeTypes {
-		if mime == mimeType {
-			return ext, true
-		}
-	}
-	return "", false
-}
-
-// GetFileExts returns known file extensions used for mimetype.
-func GetFileExts(mimeType string) []string {
-	var exts []string
-	for ext, mime := range MimeTypes {
-		if mime == mimeType {
-			exts = append(exts, ext)
-		}
-	}
-	return exts
-}