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"""
Monkey-patch for mpegdash to handle non-integer AdaptationSet id/group attributes.
TIDAL recently started returning MPD manifests with string values like "main"
for the AdaptationSet `id` and `group` attributes, which mpegdash expects to be integers.
This causes a ValueError: invalid literal for int() with base 10: 'main'
This patch modifies the parse_attr_value function to gracefully handle
non-integer values for attributes that are expected to be integers.
"""
import logging
logger = logging.getLogger(__name__)
_patched = False
def _safe_int(value: str) -> int | None:
"""Safely convert a value to int, returning None if conversion fails."""
try:
return int(value)
except (ValueError, TypeError):
return None
def apply_mpegdash_patch() -> None:
"""
Apply a monkey-patch to mpegdash to handle string values in integer fields.
This patches the parse_attr_value function in mpegdash.utils to gracefully
handle non-integer values (like "main") for attributes expected to be integers.
"""
global _patched
if _patched:
return
try:
from mpegdash import utils as mpegdash_utils
import re
# Store the original function
original_parse_attr_value = mpegdash_utils.parse_attr_value
def patched_parse_attr_value(xmlnode, attr_name, value_type):
"""
Patched version of parse_attr_value that handles non-integer values gracefully.
"""
if attr_name not in xmlnode.attributes.keys():
return None
attr_val = xmlnode.attributes[attr_name].nodeValue
if isinstance(value_type, list):
attr_type = value_type[0] if len(value_type) > 0 else str
try:
return [attr_type(elem) for elem in re.split(r"[, ]", attr_val)]
except (ValueError, TypeError):
# If conversion fails, return as strings
return [str(elem) for elem in re.split(r"[, ]", attr_val)]
# Handle integer conversion failures gracefully
if value_type == int:
result = _safe_int(attr_val)
if result is None:
logger.debug(
f"mpegdash: Could not convert '{attr_name}'='{attr_val}' to int, using None"
)
return result
try:
return value_type(attr_val)
except (ValueError, TypeError):
logger.debug(
f"mpegdash: Could not convert '{attr_name}'='{attr_val}' to {value_type.__name__}, using None"
)
return None
# Apply the patch
mpegdash_utils.parse_attr_value = patched_parse_attr_value
_patched = True
logger.debug("mpegdash patch applied successfully")
except ImportError:
logger.warning("Could not import mpegdash, patch not applied")
except Exception as e:
logger.warning(f"Failed to apply mpegdash patch: {e}")
|
