[FFmpeg-user] matroska cluster_time_limit option not working

[Swami Kevala]

 I am converting uncompressed (v210) mxf files to matroska. I would like to
have each frame as a separate cluster. The footage has a frame rate of 25,
so I am setting the option: *-cluster_time_limit 40 *

However, the first cluster of the output file contains more than 40ms:

   - Cluster (master) [position #2456, identifier 0x1F43B675 (4), size
   388,935 (3)]
   - CRC-32 (binary) [position #2463, identifier 0xBF (1), size 4 (1)]
   - Timecode (uinteger) [position #2469, identifier 0xE7 (1), size 1 (1)]
   = 0 (0x0)
   - SimpleBlock (binary) [position #2472, identifier 0xA3 (1), size
   172,096 (3)]
   - SimpleBlock (binary) [position #174572, identifier 0xA3 (1), size
   5,764 (2)]
   - SimpleBlock (binary) [position #180339, identifier 0xA3 (1), size
   5,764 (2)]
   - SimpleBlock (binary) [position #186106, identifier 0xA3 (1), size
   5,764 (2)]
   - SimpleBlock (binary) [position #191873, identifier 0xA3 (1), size
   5,764 (2)]

<--- From this point onwards the local offset is 0x28 (i.e. it is the next
frame)

   - SimpleBlock (binary) [position #197640, identifier 0xA3 (1), size
   176,453 (3)]
   - SimpleBlock (binary) [position #374097, identifier 0xA3 (1), size
   5,764 (2)]
   - SimpleBlock (binary) [position #379864, identifier 0xA3 (1), size
   5,764 (2)]
   - SimpleBlock (binary) [position #385631, identifier 0xA3 (1), size
   5,764 (2)]

The remaining clusters have 40 ms each. However they all have 1 audio block
(with 0 ms local offset, and 1 video and 3 audio blocks with a 40 ms local
offset)

I want the 1 video and 4 audio tracks to all be in a single cluster all
having 0ms local offset.


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