Hello to the forum! I'm recording a 1080i25 video signal with one stereo audio tracks.
I need to create a CBR MPEG transport stream with one h.264 25fps video track and one MPEG-Audio stereo audio track. I'm was able to create required audio e video track with constant bit rate and mux them into a transport stream, but checking the file with MediaInfo (see the attached file). 1 - the reported overall bitrate of the file results Variable Bit Rate even if the two muxed streams are CBR as required 2 - in the video stream properties I read "Frame rate mode: Variabile" instead 25 frames per second as set in the codec contest Can someone help me? Thanks in advance
Generale ID : 1 (0x1) Complete name : C:\H.264\h.264_1920x1080i25_8Mbit_MPEG2AUDIO2CH_faster.m2ts Format : BDAV Format/Info : Blu-ray Video File size : 31,4MiB Duration : 28s 640ms Overall bit rate mode : Variabile Overall bit rate : 9.181 Kbps Video ID : 256 (0x100) Menu ID : 1 (0x1) Format : AVC Format/Info : Advanced Video Codec Format profile : High@L4 Format settings, CABAC : Si Format settings, ReFrames : 4 frame Codec ID : 27 Duration : 28s 720ms Bit rate mode : Costante Bit rate : 8.552 Kbps Nominal bit rate : 8.000 Kbps / 8.000 Kbps Width : 1.920 pixel Height : 1.080 pixel Display aspect ratio : 16:9 Frame rate mode : Variabile Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bit Scan type : MBAFF Scan order : Top field first Stream size : 29,3MiB (93%) Writing library : x264 core 144 r2525 40bb568 Encoding settings : cabac=1 / ref=2 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=4 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=0 / threads=36 / lookahead_threads=8 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=tff / bluray_compat=0 / constrained_intra=0 / bframes=10 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=0 / keyint=25 / keyint_min=2 / scenecut=40 / intra_refresh=0 / rc_lookahead=12 / rc=cbr / mbtree=1 / bitrate=8000 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / vbv_maxrate=8000 / vbv_bufsize=8000 / nal_hrd=cbr / filler=1 / ip_ratio=1.40 / aq=1:1.00 Audio ID : 257 (0x101) Menu ID : 1 (0x1) Format : MPEG Audio Format version : Version 1 Format profile : Layer 2 Codec ID : 3 Duration : 28s 608ms Bit rate mode : Costante Bit rate : 256 Kbps Channel(s) : 2 canali Sampling rate : 48,0 KHz Compression mode : Con perdita Stream size : 894 KiB (3%) Menu ID : 4096 (0x1000) Menu ID : 1 (0x1) Duration : 28s 640ms List : 256 (0x100) (AVC) / 257 (0x101) (MPEG Audio) Service name : My Service Service provider : My Provider Service type : digital television
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