blackteay/ffmpeg-python
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Add cmdline to Error

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Having stdout, sterr, and the command used to launch ffmpeg in Error makes debugging easier
This commit is contained in:
Mattia Lecci 2023-03-06 17:51:19 +01:00
parent df129c7ba3
commit a184551aea
3 changed files with 20 additions and 7 deletions
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5
ffmpeg/_probe.py
View File

@ -1,7 +1,7 @@
import json
import subprocess
from ._run import Error
from ._utils import convert_kwargs_to_cmd_line_args
from ._utils import convert_kwargs_to_cmd_line_args, convert_cmd_line_args_to_cmd_line_str
def probe(filename, cmd='ffprobe', timeout=None, **kwargs):
@ -23,7 +23,8 @@ def probe(filename, cmd='ffprobe', timeout=None, **kwargs):
communicate_kwargs['timeout'] = timeout
out, err = p.communicate(**communicate_kwargs)
if p.returncode != 0:
raise Error('ffprobe', out, err)
cmdline = convert_cmd_line_args_to_cmd_line_str(args)
raise Error('ffprobe', out, err, cmdline)
return json.loads(out.decode('utf-8'))

9
ffmpeg/_run.py
View File

@ -1,6 +1,6 @@
from __future__ import unicode_literals
from .dag import get_outgoing_edges, topo_sort
from ._utils import basestring, convert_kwargs_to_cmd_line_args
from ._utils import basestring, convert_kwargs_to_cmd_line_args, convert_cmd_line_args_to_cmd_line_str
from builtins import str
from functools import reduce
import copy
@ -24,12 +24,13 @@ except ImportError:
class Error(Exception):
def __init__(self, cmd, stdout, stderr):
def __init__(self, cmd, stdout, stderr, cmdline):
super(Error, self).__init__(
'{} error (see stderr output for detail)'.format(cmd)
)
self.stdout = stdout
self.stderr = stderr
self.cmdline = cmdline
def _get_input_args(input_node):
@ -334,7 +335,9 @@ def run(
out, err = process.communicate(input)
retcode = process.poll()
if retcode:
raise Error('ffmpeg', out, err)
args = compile(stream_spec, cmd, overwrite_output=overwrite_output)
cmdline = convert_cmd_line_args_to_cmd_line_str(args)
raise Error('ffmpeg', out, err, cmdline)
return out, err

13
ffmpeg/_utils.py
View File

@ -2,8 +2,9 @@ from __future__ import unicode_literals
from builtins import str
from past.builtins import basestring
import hashlib
import sys
import sys, os
import subprocess
import shlex
if sys.version_info.major == 2:
# noinspection PyUnresolvedReferences,PyShadowingBuiltins
@ -106,3 +107,11 @@ def convert_kwargs_to_cmd_line_args(kwargs):
if v is not None:
args.append('{}'.format(v))
return args
def convert_cmd_line_args_to_cmd_line_str(args):
"""Helper function to build command line string from command line args."""
if os.name == "nt": # Windows system
return subprocess.list2cmdline(args)
# Non-windows systems
return shlex.join(args)