Hello everybody,
I have a list of videos with different bitrates and I would like to convert this list to a specific format like "mp4". I would like to have this list of videos converted to "mp4" with the same bitrate as the source video, is this possible?
I don't want to use the "Copy" option in the Codec, I want to convert to "MPEG4" for example using the same bitrate parameter as the source, automatically.
问题就在于没有必要，质量一定会下降，也许你在寻找“CRF模式”
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3 
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First, select codec in Quick Settings, and click bitrate radio button, than you can select bitrate manually, but you should know even bitrate is set, the result will be very vary due to source videos.