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2nd December 2009, 18:28 | #1 | Link |
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BD Rebuilder Bitrate
I apologise if this question has been asked before elsewhere but when I tried a search on bitrate the list seemed to go on forever.
Been backing up my DVD's for many years now using CCE and scenarist to start with before moving onto DVD Rebuilder of which I've used the PRO version for the last few years, so a quick thanks JDobbs after all this time for a great tool. Recently started to use BD Rebuilder to encode and rebuild my BluRays and I have a question regarding the bitrates (Yes there was going to be a question in here eventually!) Whenever I backed up my DVD's I always ensured that the bitrate for all areas was never below 3000 and any extra was left in the main movie. After running BD Rebuilder last night (and all day!) it gave the following report: [00000] AUDIO=11000000000000 PGS=110000000000000000000000000 M2TS_TARGET=18248614029 RATE=8836 NSIZE=17360037888 FLINK=0 MLINK=0 [00018] AUDIO=11111111111111 PGS=110000000000000000000000000 M2TS_TARGET=243350664 RATE=1936 NSIZE=253642752 FLINK=0 MLINK=0 [00019] AUDIO=11111111111111 PGS=100000000000000000000000001 M2TS_TARGET=390127556 RATE=1955 NSIZE=406523904 FLINK=0 MLINK=0 I understand that the rate of 8836 is for the movie but the rate of 1936 and 1955, are these the equivalent rates similar to a DVD backup or is a bitrate of 1936/1955 acceptable on Blu Ray? 1900 in a DVD used to be very blocky in my experience which is why I always aimed for above 3000. Sorry again if the question has already been asked and answered elsewhere. And thanks again for all the work you've done in DVD Rebuilder and BD Rebuilder over the years, JDobbs. |
2nd December 2009, 19:40 | #3 | Link |
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The selected output rates are all calculated to be proportional to the space they occupied on the original disc. The exception would be if you selected "quick encoding for extras", in which a fixed CRF value would be used for the output.
When you see low bitrates like that, it's often associated low demand sources like still screens or blank sections used for seeking. I can't tell from listing if this represents everything encoded or if this was a movie-only or full backup... but since it only adds up to about 18GB in total target size I'd guess there is more. Remember (as Dark Shikari mentioned) that H264 (AVC) can do a lot more with a specific bitrate than MPEG-2 could. Last edited by jdobbs; 2nd December 2009 at 19:44. |
2nd December 2009, 20:30 | #4 | Link |
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Thanks for the quick replies.
Sorry, it is a full Blu Ray backup with movie and extras and all English streams. I've attached the full list. LABEL=************* VERSION=v0.31.02 (beta) SOURCE_SIZE=40620966180 SOURCE_VIDEO_SIZE=40305819648 TARGET_SIZE=25060966400 REDUCTION=.61395153563706 RESIZE_1080=0 AUDIO_TO_KEEP=eng; SUBS_TO_KEEP=eng;enm; BACKUP_MODE=0 QUICK=0 ENCODE_STEP=0 COMPLETED=11 REBUILD_COMPLETE=1 [00000] AUDIO=11000000000000 PGS=110000000000000000000000000 M2TS_TARGET=18248614029 RATE=8836 NSIZE=17360037888 FLINK=0 MLINK=0 [00018] AUDIO=11111111111111 PGS=110000000000000000000000000 M2TS_TARGET=243350664 RATE=1936 NSIZE=253642752 FLINK=0 MLINK=0 [00019] AUDIO=11111111111111 PGS=100000000000000000000000001 M2TS_TARGET=390127556 RATE=1955 NSIZE=406523904 FLINK=0 MLINK=0 [00020] AUDIO=11111111111111 PGS=110000000000000000000000000 M2TS_TARGET=269378280 RATE=1937 NSIZE=280793088 FLINK=0 MLINK=0 [00021] AUDIO=11111111111111 PGS=110000000000000000000000000 M2TS_TARGET=515158187 RATE=1922 NSIZE=537212928 FLINK=0 MLINK=0 [00034] AUDIO=11111111111111 PGS=110000000000000000000000000 M2TS_TARGET=441756539 RATE=1938 NSIZE=460517376 FLINK=0 MLINK=0 [00035] AUDIO=11111111111111 PGS=110000000000000000000000000 M2TS_TARGET=359267857 RATE=1944 NSIZE=374452224 FLINK=0 MLINK=0 [00036] AUDIO=11111111111111 PGS=110000000000000000000000000 M2TS_TARGET=3178952643 RATE=9792 NSIZE=3168344064 FLINK=0 MLINK=0 [00037] AUDIO=11111111111111 PGS=110000000000000000000000000 M2TS_TARGET=563844917 RATE=1938 NSIZE=587710464 FLINK=0 MLINK=0 [00038] AUDIO=11111111111111 PGS=110000000000000000000000000 M2TS_TARGET=391432709 RATE=1835 NSIZE=408717312 FLINK=0 MLINK=0 [00046] AUDIO=11111111111111 PGS=110000000000000000000000000 M2TS_TARGET=143936488 RATE=2265 NSIZE=155836416 FLINK=0 MLINK=0 When I look at the stream tab in BD Rebuilder all the ones that attract the low bitrates say VID_000** MPEG-2, 480i, 29.97fps, *** MB. Looks like about 4.5GB of the original disk. |
3rd December 2009, 01:58 | #5 | Link | |
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