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26th July 2009, 08:41 | #1 | Link |
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Join Date: Apr 2008
Posts: 31
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Why mkv remux does change video stream bitrate?
I have remuxed a few mkv files so I coud add subtitles to my mkv films.
I know remux does not change any parameters of the stremas (audio and video) because there´s no recoding, only remuxing. But if I look at me media info of the actal and the previous mkv file, I can see al slighty different bitrate on the stream video (a few kb/s diffrerent). How can it be if the remux process does not touch the video neither the audi stream? (the audio stream remains exactly the same). Thank you in advance. |
26th July 2009, 08:53 | #2 | Link |
Programmer (or just 教务长)
Join Date: Oct 2008
Location: Valencia, Spain
Posts: 4,251
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Subtitles are muxed in-stream, so it is normal to have slight change in output bitrate, reflecting the newly added subtitle tracks.
Other than that, mediainfo may not report the actual (nominal/real) bitrate quite correct + it depends on the version of mkvmerge you used. Bitrate differences of 1-10kbps should not make you worry - it is obvious that with simple remux video is not changed. Last edited by deank; 26th July 2009 at 08:59. |
26th July 2009, 21:00 | #3 | Link | |
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Join Date: Apr 2008
Posts: 31
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Quote:
I appreciate your help. |
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