error: nothing to repeat at position 0

[timdnewman]

Hi,

I'm trying to open a seq file using the following code:

import flirpy.io.seq as fs
img_split = fs.Splitter(output_folder='./output', width=320, height=246, exiftool_path='path/to/exif/exiftool.exe')
img_split.process(['./Ply4 - Constant Direction_Tape0004.SEQ'])

The first two lines are fine but when I try and process the final line I get the following error:

---

error Traceback (most recent call last)
Input In [6], in <cell line: 1>()
----> 1 img_split.process(['./Ply4 - Constant Direction_Tape0004.SEQ'])

File path\RHP\lib\site-packages\flirpy\io\seq.py:144, in Splitter.process(self, file_list)
141 Path(folder).mkdir(exist_ok=True)
143 logger.info("Splitting {} into {}".format(seq, folder))
--> 144 self._process_seq(seq, folder)
146 # Batch export meta data
147 if self.export_meta:

File path\RHP\lib\site-packages\flirpy\io\seq.py:197, in Splitter._process_seq(self, input_file, output_subfolder)
193 def _process_seq(self, input_file, output_subfolder):
195 logger.debug("Processing {}".format(input_file))
--> 197 for count, frame in enumerate(tqdm(Seq(input_file, self.height, self.width))):
199 if frame.meta is None:
200 self.frame_count += 1

File path\RHP\lib\site-packages\tqdm\std.py:1195, in tqdm.iter(self)
1192 time = self._time
1194 try:
-> 1195 for obj in iterable:
1196 yield obj
1197 # Update and possibly print the progressbar.
1198 # Note: does not call self.update(1) for speed optimisation.

File path\RHP\lib\site-packages\flirpy\io\seq.py:79, in Seq.getitem(self, index)
76 offset, chunksize = self.pos[index]
77 chunk = self.seq_blob[offset:offset+chunksize]
---> 79 return Fff(chunk, self.width, self.height)

File path\RHP\lib\site-packages\flirpy\io\fff.py:34, in Fff.init(self, data, width, height)
32 self.height = height
33 self.meta = {}
---> 34 self._find_data_offset_simple(width, height)
35 else:
36 try:

File path\RHP\lib\site-packages\flirpy\io\fff.py:91, in Fff._find_data_offset_simple(self, width, height)
86 def _find_data_offset_simple(self, width, height):
87 search = struct.pack("<H", width-1)
88 + b"\x00\x00"
89 + struct.pack("<H", height-1)
---> 91 valid = re.compile(search)
92 res = valid.search(self.data)
94 self.data_offset = res.end() + 14

File C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.9_3.9.2800.0_x64__qbz5n2kfra8p0\lib\re.py:252, in compile(pattern, flags)
250 def compile(pattern, flags=0):
251 "Compile a regular expression pattern, returning a Pattern object."
--> 252 return _compile(pattern, flags)

File C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.9_3.9.2800.0_x64__qbz5n2kfra8p0\lib\re.py:304, in _compile(pattern, flags)
302 if not sre_compile.isstring(pattern):
303 raise TypeError("first argument must be string or compiled pattern")
--> 304 p = sre_compile.compile(pattern, flags)
305 if not (flags & DEBUG):
306 if len(_cache) >= _MAXCACHE:
307 # Drop the oldest item

File C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.9_3.9.2800.0_x64__qbz5n2kfra8p0\lib\sre_compile.py:764, in compile(p, flags)
762 if isstring(p):
763 pattern = p
--> 764 p = sre_parse.parse(p, flags)
765 else:
766 pattern = None

File C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.9_3.9.2800.0_x64__qbz5n2kfra8p0\lib\sre_parse.py:948, in parse(str, flags, state)
945 state.str = str
947 try:
--> 948 p = _parse_sub(source, state, flags & SRE_FLAG_VERBOSE, 0)
949 except Verbose:
950 # the VERBOSE flag was switched on inside the pattern. to be
951 # on the safe side, we'll parse the whole thing again...
952 state = State()

File C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.9_3.9.2800.0_x64__qbz5n2kfra8p0\lib\sre_parse.py:443, in _parse_sub(source, state, verbose, nested)
441 start = source.tell()
442 while True:
--> 443 itemsappend(_parse(source, state, verbose, nested + 1,
444 not nested and not items))
445 if not sourcematch("|"):
446 break

File C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.9_3.9.2800.0_x64__qbz5n2kfra8p0\lib\sre_parse.py:668, in _parse(source, state, verbose, nested, first)
666 item = None
667 if not item or item[0][0] is AT:
--> 668 raise source.error("nothing to repeat",
669 source.tell() - here + len(this))
670 if item[0][0] in _REPEATCODES:
671 raise source.error("multiple repeat",
672 source.tell() - here + len(this))

error: nothing to repeat at position 0

exif tools tells me it is:
File Permissions : -rw-rw-rw-
File Type : SEQ
File Type Extension : seq
MIME Type : image/x-flir-seq
Creator Software : CAMCTRL
Camera Model : FLIR SC325
Raw Thermal Image Width : 320
Raw Thermal Image Height : 246
Raw Thermal Image Type : TIFF
Raw Thermal Image : (Binary data 157644 bytes, use -b option to extract)

(and a bunch of stuff I don't think is relevant)

Is this another case of the endiness biting me? This is the first thing I've done with a thermal camera so apologies if I've missed anything obvious.

Thanks,

Tim

[timdnewman]

I've edited the paths for brevity.

I'm on windows.

[timdnewman]

Sorry - I keep remembering questions I've seen you ask other people.

flirpy installed from pip and it is version '0.3.0'