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| Default video formats for various DTV inputs http://forum.linhes.org/viewtopic.php?f=15&t=8489 |
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| Author: | jmhunt [ Tue Feb 14, 2006 5:26 am ] |
| Post subject: | Default video formats for various DTV inputs |
Can someone please enlighten me as to the normal video encoding from the various inputs I have setup. 1. Firewire input from a Motorola DCT-6200 (on Comcast) - also, is it different for HD vs SD content? - my guess is not 2. OTA to HD3000 (using DVB drivers) 3. QAM via HD3000 (on Comcast) - don't have this setup yet 4. PVR-250 via coax connection - I think this is MPEG 2, but would like to confirm. My end goal is to start some transcoding to cut commercials and save space. I will also want to put some on DVD at some point. |
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| Author: | ceenvee703 [ Tue Feb 14, 2006 7:02 am ] |
| Post subject: | |
I am pretty sure the answer to all four is "MPEG2." I'm less sure about 1 and 3 as I don't use FireWire or QAM. But OTA ATSC is MPEG2, and the PVR cards encode their signals as MPEG2 as well. Keep in mind that 1-3 are effectively just capturing the data and not really encoding anything. Only with #4 are you taking something (analog video signal) and encoding it to something else (MPEG2), thus you have the ability to set bitrates for your recordings. |
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| Author: | Xsecrets [ Tue Feb 14, 2006 7:50 am ] |
| Post subject: | |
All four are MPEG2 the only difference is going to be that #4 by default is MPEG2 PS (this will be changing in 0.19) whereas all the others are MPEG2 TS. |
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| Author: | marc.aronson [ Tue Feb 14, 2006 9:03 pm ] |
| Post subject: | |
A bit more info on the DCT-6200 used on the comcast network. HD channels seem to always be either 1920x1088i or 1280x720p resolution. SD channels seem to always be 720x480i. Marc |
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