FFMPEG threads option

src/octoprint/server/api/settings.py

@@ -48,6 +48,7 @@ def getSettings():
 			"snapshotUrl": s.get(["webcam", "snapshot"]),
 			"ffmpegPath": s.get(["webcam", "ffmpeg"]),
 			"bitrate": s.get(["webcam", "bitrate"]),
+			"ffmpegThreads": s.get(["webcam", "ffmpegThreads"]),
 			"watermark": s.getBoolean(["webcam", "watermark"]),
 			"flipH": s.getBoolean(["webcam", "flipH"]),
 			"flipV": s.getBoolean(["webcam", "flipV"])
@@ -143,6 +144,7 @@ def setSettings():
 		if "snapshotUrl" in data["webcam"].keys(): s.set(["webcam", "snapshot"], data["webcam"]["snapshotUrl"])
 		if "ffmpegPath" in data["webcam"].keys(): s.set(["webcam", "ffmpeg"], data["webcam"]["ffmpegPath"])
 		if "bitrate" in data["webcam"].keys(): s.set(["webcam", "bitrate"], data["webcam"]["bitrate"])
+		if "ffmpegThreads" in data["webcam"].keys(): s.setInt(["webcam", "ffmpegThreads"], data["webcam"]["ffmpegThreads"])
 		if "watermark" in data["webcam"].keys(): s.setBoolean(["webcam", "watermark"], data["webcam"]["watermark"])
 		if "flipH" in data["webcam"].keys(): s.setBoolean(["webcam", "flipH"], data["webcam"]["flipH"])
 		if "flipV" in data["webcam"].keys(): s.setBoolean(["webcam", "flipV"], data["webcam"]["flipV"])

src/octoprint/settings.py

@@ -61,6 +61,7 @@ def settings(init=False, configfile=None, basedir=None):
 		"stream": None,
 		"snapshot": None,
 		"ffmpeg": None,
+		"ffmpegThreads": 1,
 		"bitrate": "5000k",
 		"watermark": True,
 		"flipH": False,

src/octoprint/static/js/app/viewmodels/settings.js

@@ -55,6 +55,7 @@ $(function() {
         self.webcam_snapshotUrl = ko.observable(undefined);
         self.webcam_ffmpegPath = ko.observable(undefined);
         self.webcam_bitrate = ko.observable(undefined);
+        self.webcam_ffmpegThreads = ko.observable(undefined);
         self.webcam_watermark = ko.observable(undefined);
         self.webcam_flipH = ko.observable(undefined);
         self.webcam_flipV = ko.observable(undefined);
@@ -179,6 +180,7 @@ $(function() {
             self.webcam_snapshotUrl(response.webcam.snapshotUrl);
             self.webcam_ffmpegPath(response.webcam.ffmpegPath);
             self.webcam_bitrate(response.webcam.bitrate);
+            self.webcam_ffmpegThreads(response.webcam.ffmpegThreads);
             self.webcam_watermark(response.webcam.watermark);
             self.webcam_flipH(response.webcam.flipH);
             self.webcam_flipV(response.webcam.flipV);
@@ -239,6 +241,7 @@ $(function() {
                     "snapshotUrl": self.webcam_snapshotUrl(),
                     "ffmpegPath": self.webcam_ffmpegPath(),
                     "bitrate": self.webcam_bitrate(),
+                    "ffmpegThreads": self.webcam_ffmpegThreads(),
                     "watermark": self.webcam_watermark(),
                     "flipH": self.webcam_flipH(),
                     "flipV": self.webcam_flipV()
@@ -300,4 +303,4 @@ $(function() {
         ["loginStateViewModel", "usersViewModel", "printerProfilesViewModel"],
         ["#settings_dialog", "#navbar_settings"]
     ]);
-});
+});

src/octoprint/templates/dialogs/settings/webcam.jinja2

@@ -23,6 +23,12 @@
             <input type="text" class="input-block-level" data-bind="value: webcam_bitrate" id="settings-webcamBitrate">
         </div>
     </div>
+    <div class="control-group">
+        <label class="control-label" for="settings-webcam_ffmpegThreads">{{ _('FFMPEG threads') }}</label>
+        <div class="controls">
+            <input class="input-block-level" data-bind="value: webcam_ffmpegThreads" id="settings-webcamFfmpegThreads" type="number" step="1" min="1" placeholder="Number of FFMPEG encoding threads">
+        </div>
+    </div>
     <div class="control-group">
         <div class="controls">
             <label class="checkbox">

src/octoprint/timelapse.py

@@ -114,6 +114,7 @@ def __init__(self, postRoll=0, fps=25):
 		self._captureDir = settings().getBaseFolder("timelapse_tmp")
 		self._movieDir = settings().getBaseFolder("timelapse")
 		self._snapshotUrl = settings().get(["webcam", "snapshot"])
+		self._ffmpegThreads = settings().get(["webcam", "ffmpegThreads"])
 
 		self._fps = fps
 
@@ -274,7 +275,7 @@ def _createMovie(self, success=True):
 
 		# prepare ffmpeg command
 		command = [
-			ffmpeg, '-framerate', str(self._fps), '-loglevel', 'error', '-i', input, '-vcodec', 'mpeg2video', '-pix_fmt', 'yuv420p', '-r', str(self._fps), '-y', '-b', bitrate,
+			ffmpeg, '-framerate', str(self._fps), '-loglevel', 'error', '-i', input, '-vcodec', 'mpeg2video', '-threads', str(self._ffmpegThreads), '-pix_fmt', 'yuv420p', '-r', str(self._fps), '-y', '-b', bitrate,
 			'-f', 'vob']
 
 		filters = []