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16th July 2008, 17:40 | #1141 | Link |
RipBot264 author
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Always use h264tscutter!!!
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17th July 2008, 00:04 | #1142 | Link | |
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I investigated the true cause of the crashing problem and found that it was due to re-use of an SPS ID for an SPS with different contents. I have fixed this in my local build so that DGAVCDec can handle this situation, because it is legal according to the specification, although it does says to avoid such SPS ID re-use "when feasible". It wasn't hard to support re-use, fortunately. I just inject the last parsed SPS (indexed in the DGA file) prior to the requested random access position. A perverse encoder could break that by sending an unrelated SPS prior to a frame, but I've never seen any stream do anything like that. In fact, I've yet to see a stream even use different SPS ID's. If that ever arises (the perverse encoder case), it can be fixed by injecting the last SPS with the correct SPS ID prior to the requested random access position. But that would require me to modify the DGA file format to include the SPS ID, and to include the referenced SPS ID on the PPS index line, and I don't want to modify the DGA file format unless I have to. I will regression test a bit and then release alpha 28 later tonight. It will have this fix and Turtleggjp's fix. Then I'll address the other issues. Random access in AVC is definitely not an easy thing. I wonder if that was considered when the specification was defined. It's not just for us transcoders, but set-top boxes and players need to do it for trick modes. Last edited by Guest; 17th July 2008 at 00:34. |
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17th July 2008, 04:24 | #1143 | Link |
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Version 1.0.0 alpha 28
* Fix transport stream packet length detection for some perverse streams.
* Fix regression in random acces in DGDecode. Handle re-use of SPS ID's. http://neuron2.net/dgavcdec/dgavcdec.html |
17th July 2008, 17:33 | #1146 | Link | |
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Location: Lithuania
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thank you for update, this update also fixed previously reported problem with wrong audio delay, it reports same 45ms delay, but synchronization seams to be correct
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have you any near future to do list for DGAVCIndex, its interesting whats coming next |
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17th July 2008, 19:54 | #1148 | Link |
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I'd like to see 1. and then 3.
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17th July 2008, 20:27 | #1153 | Link |
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I haven't tried with a newer version of DGAVC, but will it be able to read the captures of the Hauppauge HD-PVR? Here is a link to a page that has a couple of samples captured on it:
http://blog.arogan.com/2008/06/haupp...odel-1212.html Search for hdpvr-def.zip and you'll find a link to some short clips he captured with the machine. |
17th July 2008, 21:02 | #1154 | Link | |
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I've asked my boss to buy one for us. |
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17th July 2008, 21:13 | #1155 | Link | |
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18th July 2008, 00:04 | #1156 | Link | |
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Oh, and if it's not too much trouble, maybe a command line switch to disable writing of the delay in the audio file's name. My automated process will not work now because it cannot predict the names of the output audio files. |
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18th July 2008, 00:47 | #1159 | Link |
RipBot264 author
Join Date: May 2006
Location: Poland
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mkv and mp4 support seems to be useless since we have FFmpegSource()
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