Hello!
Avidemux 2.7.1 - Release (Windows)
in convert.py:
adm.videoCodec("x264", "useAdvancedConfiguration=False", "general.params=CBR=28800", "general.threads=2", "general.preset=slow", ...
...
adm.addVideoFilter("resampleFps", "mode=1", "newFpsDen=1000", "newFpsNum=25000")
...
Filter resampleFps was added from filters GUI.
Using Batch mode to convert couple of files in cli mode.
Result for each in MediaInfo:
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.2
Format settings, CABAC : Yes
Format settings, ReFrames : 5 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 26mn 10s
Bit rate : 28.8 Mbps
Width : 720 pixels
Height : 480 pixels
Display aspect ratio : 3:2
Frame rate mode : Variable
Frame rate : 25.000 fps
Minimum frame rate : 8.333 fps
Maximum frame rate : 25.126 fps
Standard : NTSC
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 3.333
Stream size : 5.28 GiB (99%)
Writing library : x264 core 152 r2854 e9a5903
Encoding settings : cabac=1 / ref=5 / deblock=1:-1:-1 / analyse=0x3:0x113 / me=hex / subme=8 / psy=1 / psy_rd=1.00:0.15 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-3 / threads=2 / lookahead_threads=1 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc_lookahead=50 / rc=abr / mbtree=1 / bitrate=28800 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00
Encoded date : UTC 2018-08-17 15:58:52
Tagged date : UTC 2018-08-17 17:06:39
I mean this lines:
Frame rate mode : Variable
Frame rate : 25.000 fps
Minimum frame rate : 8.333 fps
Maximum frame rate : 25.126 fps
UPD: This issue looks like only for MP4 and MP4v2 Muxers. Mkv Muxer show correct data.
How to force constant fps (framerate) for MP4v2 Muxer?
Please use latest nightly, not Avidemux 2.7.1 - Release.
https://avidemux.org/nightly/
make settings within avidemux gui and save as project compare settings against previous above settings.
Only use avidemux gui, not cli.
Report back please on your next text.
Thanks.
Used avidemux_r180807_win64Qt5_535
.py configs was identical
But now MP4v2 convert now have correct fps values in QT. Looks like All Ok!
Cli version unstable.
There were no changes post-release which might be related to FPS jitter, especially the MP4v2 muxer hasn't been touched for ages. Please provide a sample source video (preferably < 500 MiB in size) which would allow to reproduce the issue and the project script you are using. If you can't provide a sample, please provide at least MediaInfo output for the source video.
If timestamps in the source video exhibit jitter, also the Avidemux output will have jitter.