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Compressor output MPEG 2 Program Stream won’t transcode in Rhozet Carbon
I’ve never posted here, but my frustration has led me to ask for help from fellow pros. I have a show that is delivered to the station in an MPEG 2 Program stream format. He uses Apple Compressor to encode captions in the MPEG2 Program Stream. He brought in an initial file as a test run. I loaded it into Carbon and voila, the test went perfectly. Captions looked good, file looked good.
Tonight, he brings in the entire show, encoded exactly the same as the test. No go. The transcoding stops at 60% and I get an error that says “unable to support transport stream.” I have him to compress the file and output again, just to see if it was a corrupted file. Again, the file goes to 60% and fails. While he is there, we do another test run on a 5 min. video, uses compressor to inject the scc file and outputs in an MPEG2 Program Stream. Work perfectly.
So then, why does a 5 min. test of his output stream work perfectly, but a 22 min. show using the same settings fail in Carbon.
Any help would be greatly appreciated.
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3 Replies
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What version of the Carbon Coder are you using Daniel? As you are having trouble with these clips only beyond a certain size / length suggests it might be a buffer issue in the CC. How about having the show delivered as two parts and then using the CC to stitch them together?
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Hi Andy,
We upgraded to 3.17 a month or so ago. The client has since brought in a .mov file and it worked fine, the only issue with that are the cc’s don’t show. He did the cc’s using maccaption software and did an output to quicktime. We were hoping that would be the answer, and it was partly. The .mov file went through but no captions.
The problem seems to be with the MPEG2 he does using Compressor. I’ve never seen this particular error message from Carbon before so I’m just baffled by the whole thing.
I know Carbon has an scc inject option, but I’ve never tried that and would need to call them to see if that could only be done using a program MPEG2. If so, I am back at square one. The client has done his part. He delivered an MPEG2 with cc’s embedded. Now we just can’t get it to broadcast.
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Hello Daniel,
Few pointers
1) Carbon 3.18 has just been released. Please check out if this new release fixes your issue.
2) the Carbon API Guide (available at https://www.rhozet.com) has a list of common error messages and description.
3) If you are in maintenance contract, you can get help from tech support team.Cheers,
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