Wrong timestamps preventing playback in QuickTime

[johnboiles]

I'm getting some sort of incorrect timestamping issue that is preventing reliable playback in QuickTime player. Sometimes a few frames will play but then the rest will be dropped. I get errors in the Console like this.

default    12:12:03.725776-0700    obs    CMIO_Unit_Input_Device_DALPlugInProducer.cpp:584:PullInput 0x7ff699b0fc40    Asn=1466    pts    48.865    dur    0.033    ht_ms    0    now_ms    43835002    flags    0x00000000    ***** DELTA 43835002 IS GREATER THAN FRAME DURATION OF 33 *****
default    12:12:03.833574-0700    obs    CMIO_Unit_Input_Device_DALPlugInProducer.cpp:584:PullInput 0x7ff699b0fc40    Asn=1467    pts    48.898    dur    0.033    ht_ms    0    now_ms    43835110    flags    0x00000000    ***** DELTA 43835110 IS GREATER THAN FRAME DURATION OF 33 *****
default    12:12:03.940351-0700    obs    CMIO_Unit_Input_Device_DALPlugInProducer.cpp:584:PullInput 0x7ff699b0fc40    Asn=1468    pts    48.932    dur    0.033    ht_ms    0    now_ms    43835217    flags    0x00000000    ***** DELTA 43835217 IS GREATER THAN FRAME DURATION OF 33 *****
default    12:12:04.045023-0700    obs    CMIO_Unit_Input_Device_DALPlugInProducer.cpp:584:PullInput 0x7ff699b0fc40    Asn=1469    pts    48.965    dur    0.033    ht_ms    0    now_ms    43835322    flags    0x00000000    ***** DELTA 43835322 IS GREATER THAN FRAME DURATION OF 33 *****

I've also tried decoding this in OBS. I get similar messages (though OBS does not drop the frames)

default    12:12:03.725776-0700    obs    CMIO_Unit_Input_Device_DALPlugInProducer.cpp:584:PullInput 0x7ff699b0fc40    Asn=1466    pts    48.865    dur    0.033    ht_ms    0    now_ms    43835002    flags    0x00000000    ***** DELTA 43835002 IS GREATER THAN FRAME DURATION OF 33 *****
default    12:12:03.833574-0700    obs    CMIO_Unit_Input_Device_DALPlugInProducer.cpp:584:PullInput 0x7ff699b0fc40    Asn=1467    pts    48.898    dur    0.033    ht_ms    0    now_ms    43835110    flags    0x00000000    ***** DELTA 43835110 IS GREATER THAN FRAME DURATION OF 33 *****
default    12:12:03.940351-0700    obs    CMIO_Unit_Input_Device_DALPlugInProducer.cpp:584:PullInput 0x7ff699b0fc40    Asn=1468    pts    48.932    dur    0.033    ht_ms    0    now_ms    43835217    flags    0x00000000    ***** DELTA 43835217 IS GREATER THAN FRAME DURATION OF 33 *****
default    12:12:04.045023-0700    obs    CMIO_Unit_Input_Device_DALPlugInProducer.cpp:584:PullInput 0x7ff699b0fc40    Asn=1469    pts    48.965    dur    0.033    ht_ms    0    now_ms    43835322    flags    0x00000000    ***** DELTA 43835322 IS GREATER THAN FRAME DURATION OF 33 *****

I'm digging in the code to try to understand these.

[johnboiles]

I partially understand now. Looks like the SampleVCamAssistant is sending a 0 timestamp. Added a fix here: #10