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michaelquigleyii-vision's Issues
Replace bmp2dhr with ii-pix for DHGR
Stop hosting transcoder/data in LFS
Any chance of sticking the example videos on Google Drive, or some similar service?
I've got a bunch of this stack ready to go, but I'm struggling with trying to transcode a video. Would love to test with a known-good video.
Update to python 3.9+ once blocker(s) are resolved
The bug referenced in the docs limiting to Python 3.7 seems to have been fixed:
https://bugs.python.org/issue44439
Feature request: Support positional/ordered dithering
BMP2DHR only supports error-diffusion dithering which is not appropriate for video. Positional/ordered dithering is much more appropriate for video; it is stable across the spatial domain, which translates into being stable across the time domain. Without any changes in the player, this will allow for larger display updates with less dither noise.
Some good free algorithms for doing this are at https://bisqwit.iki.fi/story/howto/dither/jy/
Consider using A2BestPix instead of BMP2DHR
Congratulations, this is super cool in every way!
Have you considered using the amazing A2BestPix DHGR encoder described here?...
He's researched a way to get exceptional conversions by taking advantage of the fuzzy bleeding artifacts between each pixel on an analog Apple II display. His sample images are stunning and I'd really love to see those come to life in your transcoder.
Update docs to reflect emulator capabilities
AppleWin supports Uthernet I and II
Support DHGR mono video encoding
Where to find a demo video
Hi
I am trying to stream an mp4 to an Apple ii, but really struggle to make transcode/main.py to work.
Errors look like
Palette NTSC
Input frame rate = 30.000000
Starting frame 1
Similarity 0.000000
Traceback (most recent call last):
File "/home/andrea/projects/cvs/3rdParty/ii-vision/transcoder/main.py", line 73, in <module>
main(parser.parse_args())
File "/home/andrea/projects/cvs/3rdParty/ii-vision/transcoder/main.py", line 68, in main
for bytes_out, b in enumerate(m.emit_stream(m.encode())):
File "/home/andrea/projects/cvs/3rdParty/ii-vision/transcoder/movie.py", line 110, in emit_stream
for op in ops:
File "/home/andrea/projects/cvs/3rdParty/ii-vision/transcoder/movie.py", line 87, in encode
(page, content, offsets) = next(
File "/home/andrea/projects/cvs/3rdParty/ii-vision/transcoder/video.py", line 88, in encode_frame
yield from self._index_changes(
File "/home/andrea/projects/cvs/3rdParty/ii-vision/transcoder/video.py", line 119, in _index_changes
diff_weights = target_pixelmap.diff_weights(self.pixelmap, is_aux)
File "/home/andrea/projects/cvs/3rdParty/ii-vision/transcoder/screen.py", line 403, in diff_weights
return self._diff_weights(source.packed, is_aux)
File "/home/andrea/projects/cvs/3rdParty/ii-vision/transcoder/screen.py", line 438, in _diff_weights
dist = self.edit_distances(self.palette)[o][pair].reshape(
File "/home/andrea/projects/cvs/3rdParty/ii-vision/transcoder/screen.py", line 348, in edit_distances
dist = pickle.load(ed) # type: List[np.ndarray]
File "/usr/lib/python3.8/bz2.py", line 172, in peek
return self._buffer.peek(n)
File "/usr/lib/python3.8/_compression.py", line 68, in readinto
data = self.read(len(byte_view))
File "/usr/lib/python3.8/_compression.py", line 103, in read
data = self._decompressor.decompress(rawblock, size)
OSError: Invalid data stream
Do you have an example file I could try?
Bmp2DHR Error in Transcoding
I'm running into the following error when trying to transcode a video. It appears to be hitting bmp2dhr, which is emitting the following:
% python3 transcoder/main.py voir.mp4
/Users/michael/Repos/ii-vision/transcoder/audio.py:58: FutureWarning: Pass orig_sr=48000, target_sr=14700.0 as keyword args. From version 0.10 passing these as positional arguments will result in an error
a = librosa.resample(a, f.samplerate,
Palette NTSC
Input frame rate = 23.976024
Palette 5: tohgr NTSC DHGR Colors
Preview Palette 5: tohgr NTSC DHGR Colors
voir/DHGR/NTSC/00000000.bmp is in the wrong format!
Exception in thread Thread-1:
Traceback (most recent call last):
File "/Applications/Xcode.app/Contents/Developer/Library/Frameworks/Python3.framework/Versions/3.9/lib/python3.9/threading.py", line 973, in _bootstrap_inner
self.run()
File "/Applications/Xcode.app/Contents/Developer/Library/Frameworks/Python3.framework/Versions/3.9/lib/python3.9/threading.py", line 910, in run
self._target(*self._args, **self._kwargs)
File "/Users/michael/Repos/ii-vision/transcoder/frame_grabber.py", line 125, in worker
q.put(decode(_idx, _frame))
File "/Users/michael/Repos/ii-vision/transcoder/frame_grabber.py", line 112, in _dhgr_decode
_main = np.fromfile(mainfile, dtype=np.uint8)
FileNotFoundError: [Errno 2] No such file or directory: 'voir/DHGR/NTSC/00000000.BIN'
The error appears to be bmp2dhr spitting out voir/DHGR/NTSC/00000000.bmp is in the wrong format!
I tried to contact the author of Bmp2DHR but the email just bounces.
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