daemon/packager.py

@@ -68,6 +68,7 @@ class Mediasite:
                 with open(demux_file, 'w') as f:
                     elapsed = 0 + int(offset)
                     myslide = {}
+                    f.write('ffconcat version 1.0\n')
                     for i in range(len(data['slides'])):
                         myslide['url'] = os.path.join(slides_path, self._download(slides_path, data['slides'][i]['url'], session))
                         if i == 0:

daemon/transcoder.py

@@ -176,7 +176,7 @@ class _Worker:
         self.logger.debug("%s - Calling ffmpeg", package_id)
         start = time.time()
         (ffmpeg
-            .input(demux_file, format='concat', safe=0, segment_time_metadata=1)
+            .input(demux_file, safe=0)
             .filter('scale', height='min(in_h, {})'.format(maxheight), width=-2)
             .output(outpath, vcodec='libx264', crf=crf, preset=preset, vsync='vfr', movflags='+faststart', pix_fmt='yuv420p', c='copy')
             .overwrite_output()