I am puzzled.
Maybe it is normal, I don't know, I am not an expert.
I have .TS files (tv recordings).
Usually I start some 5 minutes before the actual beginning of the broadcast and add some 10 minutes at the to make sure I don't miss the ending.
When editing I remove those 'extra' recordings and the commercial breaks, once or sometimes twice during the broadcast.
All in all, the recording is often reduced by some 30 or 35%.
I then re-encode the file/export it to a .mkv - high quality (I want to have the same quality as the original recording)
and end up with a file that often is much bigger than the original 'uncut' one.
So, a 3.6GB file, minus -say- 30% commercials and stuff, then export to .mkv, I end up with a 4.4GB file.
The quality is perfect, that isn't the point.
Added attachment to illustrate what I mean.
As said, I am not an expert, sorry for the dumb question, but.. is this normal?
(using TMPGEnc Video Mastering Works v6, it works perfect)
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The definition of average bitrate is
birate = stream size / running time
stream size = bitrate * running time
Thank you very much indeed.
As said, I am not an expert. So, this bitrate stuff, I am sorry ... but need a bit of advice on that.
In the screenshot above the bitrate in the output was: "Variable"
Whereas I see that the bitrate in the source was maximum 8,275kb/s.
I want the quality to be the same as the original, that is most important for me. The filesize, after cutting out commercials, should not be bigger.
If it is the same file size, then it would be okay, but slightly smaller would be nice.
Question: what would be the recommended bitrate-settings then?
and set the 'Maximum' to be the same as the max. in the original?
See attachments for options #1 #2 #3 and maybe I should use settings in #4
In this example:
original file 4.7GB 70 minutes
removed commercials, left 45 minutes (35% removed)
the default result, in this example..., would be 3.3GB, which would be fine with me.
However, as said, in other cases, the result might as well be as big as 2x the original.
MediaInfo didn't report an average bitrate for the new file but it shows a "nominal bitrate" of 10.4 Mb/s. And the x264 metadata shows 10.350 Mb/s was specified. The video is almost exactly an hour long so:
10350000 bits per second * 60 seconds per minute * 60 minutes per second / 8 bits per byte = 4,657,500,000 bytes = 4.34 GiB.
The source file was also an hour long and MediaInfo reports and average bitrate of 8088 Kb/s:
8088000 bits per second * 60 seconds per minute * 60 minutes per second / 8 bits per byte = 3,639,600,000 bytes = 3.39 GiB.
Probably the software you are using to convert the TS file to MKV. I do much the same using TSDoctor to cleanup the TS file and edit out commercials and top and tail. I save as TS. Then I use MKVToolnix to wrap the TS file in a MKV container. Takes a few minutes, no re-encoding, quality in is quality out and the size is the same..BeyonWiz T3 PVR ~ Popcorn A-500 ~ Samsung ES8000 65" LED TV ~ Windows 7 64bit ~ Yamaha RX-A1070 ~ QnapTS851-4G
If you aren't going to save it and just watch it later then i wouldn't worry about,also it's just a bit bigger.I think,therefore i am a hamster.
@jagabo - Sorry for the late reply. Many thanks again for your elaborate reply, truly appreciate it. I have checked many source .ts files that I have saved and the found bit rate mode: variable and maximum is 10.1Mb/s so probably I should set the bitrate to 10,35 Mbps, which seems to be automatically set by TMPGEnc Video Mastering Works.
Using 2 pass: I'll consider it. However, to be honest, I don't see a difference between source and the output .mkv using 1 Pass.
TMPGEnc Video Mastering Works. I have no knowledge of editing and maybe this application is an overkill for the purpose I use it. Often there are cheaper solutions available. Way back and also just recently I gave VideoRedo a try, but found it was (very) slow on moving back and forth and didn't work as comfortable as what I am using.
A matter of taste, I agree.
TSDocter and MKVToolNix may be a good alternative for what I am doing. At the time, as a newbie, when getting into video editing arena, the terms used within these tools were entirely new to me, hence they were (too) 'complicated' - I went the easy (GUI) way