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TypeError: 'MMALBuffer' object does not support indexing #337

Berryfier opened this issue Oct 12, 2016 · 1 comment


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commented Oct 12, 2016

I am running a strobe synchroniser which relies on the comparison of presentation and system time stamps. The method of obtaining the presentation time stamp is based on the example recipe which extends the Custom Encoder PiCookedVideoEncoder class; in my case using pts in place of flags. Under
def _callback_write(self, buf):
the recipe has
Whilst this worked in version 1.10, version 1.12 reports
TypeError: 'MMALBuffer' object does not support indexing
sys.excepthook is missing
lost sys.stderr
With guidance from the interactive help, the error can be overcome by making these changes
def _callback_write(self, buf, key=0):
Thank you for publishing the recipies.


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commented Nov 14, 2016

Ah, many thanks! I'll get that fixed up for the next version.

@waveform80 waveform80 added the bug label Nov 14, 2016

@waveform80 waveform80 added this to the 1.13 milestone Nov 14, 2016

@waveform80 waveform80 self-assigned this Nov 14, 2016

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