Fixed high resolution video messages not being converted to video notes

Did this by adding a workaround, where video files are downscaled to a
maximum resolution of 638 x 638, where the 638 value was found by
downloading some random video notes, and noticing that none had a width
or height bigger than 638.

Author: revolter

src/constants.py

@@ -13,12 +13,14 @@
 EPOCH_DATE = datetime.datetime(1970, 1, 1)
 
 MAX_VIDEO_NOTE_LENGTH = 60
+MAX_VIDEO_NOTE_SIZE = 638
 
 AUDIO_CODEC_NAMES = ['aac', 'mp3']
 
 VIDEO_CODEC_NAMES = ['h264', 'hevc', 'mpeg4', 'vp6', 'vp8']
-VIDEO_NOTE_CROP_OFFSET_PARAMS = 'abs(in_w - in_h) / 2'
-VIDEO_NOTE_CROP_SIZE_PARAMS = 'min(in_w, in_h)'
+VIDEO_NOTE_CROP_HORIZONTAL_OFFSET_PARAMS = 'abs(in_w - min(min(in_w, in_h), {})) / 2'.format(MAX_VIDEO_NOTE_SIZE)
+VIDEO_NOTE_CROP_VERTICAL_OFFSET_PARAMS = 'abs(in_h - min(min(in_w, in_h), {})) / 2'.format(MAX_VIDEO_NOTE_SIZE)
+VIDEO_NOTE_CROP_SIZE_PARAMS = 'min(min(in_w, in_h), {})'.format(MAX_VIDEO_NOTE_SIZE)
 
 
 class OutputType:

src/utils.py

@@ -171,8 +171,8 @@ def convert(output_type: str, input_video_url: typing.Optional[str] = None, inpu
                 ffmpeg_input
                     .video
                     .crop(
-                        constants.VIDEO_NOTE_CROP_OFFSET_PARAMS,
-                        constants.VIDEO_NOTE_CROP_OFFSET_PARAMS,
+                        constants.VIDEO_NOTE_CROP_HORIZONTAL_OFFSET_PARAMS,
+                        constants.VIDEO_NOTE_CROP_VERTICAL_OFFSET_PARAMS,
                         constants.VIDEO_NOTE_CROP_SIZE_PARAMS,
                         constants.VIDEO_NOTE_CROP_SIZE_PARAMS
                     )