[FFmpeg-user] Hint - not enough frames to estimate rate - AVC-Intra MXFs

Christoph Gerstbauer christophgerstbauer at gmx.at
Wed May 7 09:23:13 CEST 2014

Am 07.05.2014 09:09, schrieb Tobias Rapp:
> Christoph Gerstbauer wrote:
>> I am reading out different MXF testfiles with different codecs with
>> ffprobe/ffmpeg
>> The container is always MXF Operation Pattern 1a, and the codecs are:
>> XDCAMHD422, AVC-Intra, DNxHD and MPEG-IMX50.
>> The filelength of every file is 10 seconds.
>> ffprobe gives me following (yellow) hint at 6 of 8 AVC-Intra MXFs:
>> [mxf @ 0000000002a984e0] Stream #0: not enough frames to estimate rate;
>> consider increasing probesize
>> The other codec samples are ok. (DNxHD, XDCAM, IMX50)
>> What is missing in these MXF containers (header) when this hint message
>> appears?
> I guess that due to the high bitrate of these files the default probe buffer
> contains only a low amount of frames. You can either increase the probe
> buffer with "-probesize" (in my tests 10MB worked fine) or ignore the
> message.
> Regards,
> Tobias
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Thank you,

"-probesize 10M" worked.


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