Hi, i have an x264 file.
But after muxing with mkvmerge to mkv it shows different bitrate and filesize is much smaller than the orginal x264 file ? Is there anything wrong?Code:File size : 6.75 GiB Video Format : AVC Format/Info : Advanced Video Codec Format profile : Main@L4 Format settings : CABAC / 4 Ref Frames Format settings, CABAC : Yes Format settings, Reference : 4 frames Bit rate mode : Constant Bit rate : 9 000 kb/s / 9 000 kb/s Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate : 23.976 (24000/1001) FPS Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.181 Writing library : x264 core 152 Encoding settings : cabac=1 / ref=2 / deblock=1:-1:-1 / analyse=0x1:0x131 / me=umh / subme=10 / psy=1 / psy_rd=1.00:0.15 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=0 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-3 / threads=36 / lookahead_threads=3 / sliced_threads=0 / slices=1 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / stitchable=1 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=48 / keyint_min=2 / scenecut=0 / intra_refresh=0 / rc_lookahead=48 / rc=cbr / mbtree=1 / bitrate=9000 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / vbv_maxrate=9000 / vbv_bufsize=9000 / nal_hrd=cbr / filler=1 / ip_ratio=1.40 / aq=3:1.00
Code:File size : 5.11 GiB Bit rate mode : Constant Bit rate : 6 549 kb/s Nominal bit rate : 9 000 kb/s / 9 000 kb/s
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1. Don't shorten the MediaInfo log.
2. What is the source? Possibly mkvmerge removed useless AVC filler data often found in transport streams.
https://forum.videohelp.com/threads/393138-mp4-file-has-turned-into-a-1-4GB-smaller-mkv-file -
The orginal file/stream was dash/mp4 downloaded from a vod service... As i read in the thread you posted mkvmerge just removes these usesless H.264 filler NALU data
Code:Format : iso6 Codec ID : iso6 (iso6/dash) File size : 6.76 GiB Duration : 1 h 47 min Overall bit rate mode : Constant Overall bit rate : 9 005 kb/s Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : Main@L4 Format settings : CABAC / 4 Ref Frames Format settings, CABAC : Yes Format settings, Reference : 4 frames Codec ID : avc1 Codec ID/Info : Advanced Video Coding Duration : 1 h 47 min Bit rate mode : Constant Bit rate : 9 000 kb/s / 9 000 kb/s Maximum bit rate : 14.6 Mb/s Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 23.976 (24000/1001) FPS Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.181 Stream size : 6.75 GiB (100%) Writing library : x264 core 152 Encoding settings : cabac=1 / ref=2 / deblock=1:-1:-1 / analyse=0x1:0x131 / me=umh / subme=10 / psy=1 / psy_rd=1.00:0.15 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=0 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-3 / threads=36 / lookahead_threads=3 / sliced_threads=0 / slices=1 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / stitchable=1 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=48 / keyint_min=2 / scenecut=0 / intra_refresh=0 / rc_lookahead=48 / rc=cbr / mbtree=1 / bitrate=9000 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / vbv_maxrate=9000 / vbv_bufsize=9000 / nal_hrd=cbr / filler=1 / ip_ratio=1.40 / aq=3:1.00 Language : English
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