I can go for higher bitrates to preserve quality of video and encoding speeds in constrained baseline profileīut the question is which method shall i use for speedy encodesĪverage Bitrate (ABR, also “target bitrate”) method with only specifying -b:vĬonstrained Encoding (VBV) method which requires additional settings whihch is -b:v -minrate -maxrate -bufsize etcĪnd also i dont know properly how this -minrate -maxrate -bufsize affects the video quality
Main problem is encoding speed is too loww.and thats why i use ultrafast preset with libx264 codec which actually automaticaly selects constrained baseline video profile.thats why output video only contains I and P frames (no Bframes because constrained baseline profile doesnot supports Bframes i guess) Playback on my pc isnt problem.my computer can play videos smothly which is encoded at high profilesīut it should be in under 720p resolution. Even you cut "black bars" on the top and bottom, you will see them again on your TV.Ĭroppings also make "a small zoom" on the video, that zooming reduces the quality.Ĭode: ffmpeg -i input.mp4 -vf scale=432:-2 -c:v libx264 -preset ultrafast -b:v 260k -maxrate 390k -bufsize 390k output.mp4 crop shall precede scale in video filter chain
There are also many options for H264 in MeGUI.įor "lossless cutting video clips", I guess you mean "cutting without re-encoding", the best to use is MKVToolnix, or VirtualDubMod (which is very old but still useful).Ĭropping is not recommended. Most of them are command-line tools, but MeGUI offers you a graphical user interface, so you don't need to write or memorise any command lines. Remember that MeGUI is a package with all-needed encoding tools like dgindex, eac3to, ffmpeg, lsmash, tsmuxer, x264 and x265 encoders, etc. First, you can extract subtitle and audio tracks from original file (via "HD Streams Extractor", which is actually an inside-GUI to command-line tools like " eac3to"), and later add them to the encoded file while muxing.
Because ffmpeg can do many options which gui encoders does not includes.like editing meta data ,adding subtitles, adding extra tracks etcĪnd for lossless cutting video clips, croping videos ,adding some filters for that kind of oprations i use gui softwares like avidemux MeGUI also does them.
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