I'm not alone in my search for a decent tool to archive shows originally broadcast on HDTV onto DVD media for keeping or sharing with others. For example, I'm not an Elvis fan, but my friend is and I want to give her a DVD of the recent broadcast she missed.
The show is about 16G bytes in its original 1080i presentation. There is a simple scaling relationship between the original format (1920x1080 MPEG2-TS) and the desired format (720x480 MPEG2-PS). Why is there no program that takes one MPEG2 stream and scales it by a simple fraction, without decoding and re-encoding the MPEG structure? Assuming that the network took some care in encoding the MPEG file for HDTV broadcast, why not keep all the same "B frames", "I frames", and whatever -- and just scale everything by 3/8 horizontally and 4/9 vertically to get the required DVD resolution? I have used currently available tools to create a DVD, but with unacceptable difficulty and mediocre results. The best I've found so far is using tools under Windows to process the file -- HDTVtoMPEG2 to strip the TS into an MPEG file and Nero Vision to transcode it to DVD format. Running these on the Elvis program resulted in 6 hours of computer time and produced a DVD that has "chapters" every 2GB that cause the player to stop cold. Nero seems to do a complete decode/re-encode which is what takes all the time. There has to be a better way than this! Has anyone seen a software solution (preferably Linux based, open source) that scales MPEG data without decoding and re-encoding? __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
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