I have a problem with the videos I want to play. I import an mp4 video but it just freezes constantly. I’ve checked on Youtube and the internet but couldn’t find a reason why this happens ?.
please help this newbie
@mona1984 mp4 is actually a container for a wide range of video codecs, so there is a chance the file you have is an unsupported format. Another potential issue is if the footage is variable frame rate.
It would help us greatly if you could post your machine specs, as well as use something such as the program MediaInfo to provide us a text breakdown of the footage.
@mona1984 As Ben said there is probably an issue with your originating footage. Install MediaInfo and return a Tree report here so we can see what the underlying codec is (plus your machine specs). Also, here is a tutorial on MediInfo.
Chances are you are going to need to transcode your footage. You can do that with Handbrake. Here is a tutorial for that, as well.
I'll already give you the specs since all the rest is Chinese to me (the programs I should install)
do you need to know anything else?
I hope it's not because of the specs of the laptop ....
@mona1984 if you could follow Stargazer's comment (went into more depth than mine) to provide us with the specifics of your footage as well, that would help, as it is likely this is what is causing problems.
Ok I think I figured it out. Audio Steam is AAC LC, is that causing the issue?
GeneralFormat : MPEG-4Format profile : Base Media / Version 2Codec ID : mp42 (mp42/mp41/isom/avc1)File size : 144 MiBDuration : 51 s 392 msOverall bit rate : 23.5 Mb/sEncoded date : UTC 2019-04-18 05:53:09Tagged date : UTC 2019-04-18 05:53:09VideoID : 1Format : AVCFormat/Info : Advanced Video CodecFormat profile : [email protected]Format settings : CABAC / 5 Ref FramesFormat settings, CABAC : YesFormat settings, Reference frames : 5 framesCodec ID : avc1Codec ID/Info : Advanced Video CodingDuration : 51 s 383 msBit rate : 23.4 Mb/sWidth : 3 840 pixelsHeight : 2 160 pixelsDisplay aspect ratio : 16:9Frame rate mode : ConstantFrame rate : 29.970 (30000/1001) FPSColor space : YUVChroma subsampling : 4:2:0Bit depth : 8 bitsScan type : ProgressiveBits/(Pixel*Frame) : 0.094Stream size : 143 MiB (99%)Writing library : x264 core 157 r10 d4099ddEncoding settings : cabac=1 / ref=5 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=8 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=48 / lookahead_threads=8 / sliced_threads=0 / 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=infinite / keyint_min=29 / scenecut=40 / intra_refresh=0 / rc_lookahead=50 / rc=crf / mbtree=1 / crf=20.0 / qcomp=0.60 / qpmin=5 / qpmax=69 / qpstep=4 / vbv_maxrate=24200 / vbv_bufsize=66000 / crf_max=0.0 / nal_hrd=none / filler=0 / ip_ratio=1.40 / aq=1:1.00Encoded date : UTC 2019-04-18 05:53:09Tagged date : UTC 2019-04-18 05:53:09Color range : LimitedColor primaries : BT.709Transfer characteristics : BT.709Matrix coefficients : BT.709Codec configuration box : avcCAudioID : 2Format : AAC LCFormat/Info : Advanced Audio Codec Low ComplexityCodec ID : mp4a-40-2Duration : 51 s 392 msBit rate mode : ConstantBit rate : 137 kb/sChannel(s) : 2 channelsChannel layout : L RSampling rate : 48.0 kHzFrame rate : 46.875 FPS (1024 SPF)Compression mode : LossyStream size : 860 KiB (1%)Encoded date : UTC 2019-04-18 05:53:09Tagged date : UTC 2019-04-18 05:53:09
@mona1984 it seems the data isn't problematic, but it is 4k in a format that isn't optimized for editing, running on a lower-end machine. I do recommend you transcode the footage to a more edit-friendly format, there are a few guides around the forum for it, and probably more online too. That should help slightly. You could also try turning down the playback resolution in the viewer, as well as the playback quality.
Hmmm OK need to check...
Is it the graph card of the laptop which causes these problems then?
@mona1984 both your CPU and GPU are far from top of the line. I wouldn't really say there is a "problem", as to me that suggests there is an issue with your machine or the software. What is really happening is you're just trying to do something quite demanding, which your machine struggles with. The best solution is to try and make the problem as un-demanding as possible, by converting the file to one more optimal, and dropping the playback resolution. Hopefully that should help.