Add jffprobe example

examples/jffprobe.py

@@ -0,0 +1,50 @@
+#!/usr/bin/env python
+import argparse
+import json
+import logging
+import subprocess
+import sys
+
+
+parser = argparse.ArgumentParser(description='Run ffprobe on one or more files with JSON output')
+parser.add_argument('filenames', nargs='+', help='Filename(s)')
+
+
+class ExecException(Exception):
+    def __init__(self, stderr_output):
+        super(ExecException, self).__init__('Execution error')
+        self.stderr_output = stderr_output
+
+
+def run_ffprobe(filename):
+    args = ['ffprobe', '-show_format', '-of', 'json', filename]
+    p = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    out, err = p.communicate()
+    if p.returncode != 0:
+        raise ExecException(err)
+    return json.loads(out)
+
+
+def main(filenames):
+    failed = False
+    results = {}
+    for filename in sys.argv[1:]:
+        try:
+            results[filename] = run_ffprobe(filename)
+        except ExecException as e:
+            logging.error('Error processing {}:'.format(filename))
+            logging.error(e.stderr_output)
+            failed = True
+        except Exception as e:
+            logging.exception('Error processing {}:'.format(filename))
+            failed = True
+    if results != {}:
+        print(json.dumps(results, indent=4, sort_keys=True))
+        if failed:
+            logging.warning('One or more ffprobe calls failed. See above for detail.')
+    sys.exit(int(failed))
+
+
+if __name__ == '__main__':
+    args = parser.parse_args()
+    main(args.filenames)