Buffering Issues

Interesting, are you using WiFi to and from both devices? Meaning the server, where the movie is coming from as well? A 2013 MacBook is not that fast on WiFi. Even on 5ghz it will do only 150 mbps in one direction. We should wait, what Paul’s experience will be.

Or, if I want a big NAS somewhere else, is there anyway I can use some sort of portable SSD and make it into NAS. It would be great to have something cheap and small at, say, 200GB to just sit there while I load a file into it on a case by case basis

I guess this will work. It is a question, of how your workflow is.
I’m generating the Mkvs or ISO’s on my Mac, and then transfer it to the nas. But I can play them from the Mac as well as from the nas.
It depends on your workflow, and on how much storage you plan to need.
I just can’t erase things :wink:

@paul_doran Have you decided to go a different way other than troubleshoot what’s causing your buffering? I’m not sure that more hardware will solve your particular issue.

If you want to pursue the issue the answers to the above questions would help.

Sorry if I missed questions. Caching is set to auto.

I didn’t realise you can test speed. How can I share the data, but rate and stuff, of the file in question too?

For the speed test on that exact file, I get an average speed of 53Mbps.

I did some maths and if there are 7200 seconds in a 2 hour film, and if the film is 50gb, it needs a transfer rate of 55Mbps, which almost perfectly explains why it very nearly plays but doesn’t.

The maths here is

400,000 Mbps = 50GB

400,000/ 7200 = 55

How can I get faster WiFi?

Also how do I test the speed of the WiFi from, day, my iPhone 11, so I can understand to what extent the MacBook is the bottleneck?

I have question here. Will the speed test show the average speed of the file itself, or of the actually transferred rate?

You can run that file through mediainfo and post the results here.

You can get it here if you don’t have it already.
https://mediaarea.net/en/MediaInfo

Are there other files that are also causing the same problems?

Another question, what protocol are you connecting with?
SMB, FTP, etc.

I just checked a 4K iso. 62 Gb for 2hours20.
The speed test showed an average of 200 Mbs in the beginning, going down to 160 on the long run.

I am using SMB. File info here:

Format : Matroska
Format version : Version 4
File size : 49.7 GiB
Duration : 1h 58mn
Overall bit rate mode : Variable
Overall bit rate : 60.2 Mbps

Video
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main 10@L5.1@High
HDR format : SMPTE ST 2086, HDR10 compatible
Codec ID : V_MPEGH/ISO/HEVC
Duration : 1h 58mn
Bit rate : 54.3 Mbps
Width : 3 840 pixels
Height : 2 160 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 (Type 2)
Bit depth : 10 bits
Bits/(Pixel*Frame) : 0.273
Stream size : 44.8 GiB (90%)
Title : MPEG-H HEVC Video / 54674 kbps / 2160p / 23.976 fps / 16:9 / Main 10 @ Level 5.1 @ High / 4:2:0 / 10 bits / 1000nits / HDR10 / BT.2020
Writing library : ATEME Titan File 3.9.0 (4.9.0.0)
Language : English
Default : Yes
Forced : No
Color range : Limited
Color primaries : BT.2020
Transfer characteristics : PQ
Matrix coefficients : BT.2020 non-constant
Mastering display color primaries : Display P3
Mastering display luminance : min: 0.0001 cd/m2, max: 1000 cd/m2

Audio #1
ID : 2
Format : MLP FBA 16-ch
Format/Info : Meridian Lossless Packing FBA with 16-channel presentation
Commercial name : Dolby TrueHD with Dolby Atmos
Codec ID : A_TRUEHD
Duration : 1h 58mn
Bit rate mode : Variable
Bit rate : 4 929 Kbps
Maximum bit rate : 7 332 Kbps
Channel(s) : 8 channels
Channel layout : L R C LFE Ls Rs Lb Rb
Sampling rate : 48.0 KHz
Frame rate : 1 200.000 fps (40 SPF)
Compression mode : Lossless
Stream size : 4.07 GiB (8%)
Title : Dolby TrueHD/Atmos Audio / 7.1 / 48 kHz / 5569 kbps / 24-bit
Language : English
Default : Yes
Forced : No
Number of dynamic objects : 13
Bed channel count : 1 channel
Bed channel configuration : LFE

Audio #2
ID : 3
Format : AC-3
Format/Info : Audio Coding 3
Commercial name : Dolby Digital
Codec ID : A_AC3
Duration : 1h 58mn
Bit rate mode : Constant
Bit rate : 640 Kbps
Channel(s) : 6 channels
Channel layout : L R C LFE Ls Rs
Sampling rate : 48.0 KHz
Frame rate : 31.250 fps (1536 SPF)
Compression mode : Lossy
Stream size : 541 MiB (1%)
Title : Compatibility Track / Dolby Digital Audio / 5.1 / 48 kHz / 640 kbps
Language : English
Service kind : Complete Main
Default : No
Forced : No

Audio #3
ID : 4
Format : AC-3
Format/Info : Audio Coding 3
Commercial name : Dolby Digital
Codec ID : A_AC3
Duration : 1h 58mn
Bit rate mode : Constant
Bit rate : 192 Kbps
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 KHz
Frame rate : 31.250 fps (1536 SPF)
Compression mode : Lossy
Stream size : 162 MiB (0%)
Title : Commentary with director Jon Favreau / Dolby Digital Audio / 2.0 / 48 kHz / 192 kbps
Language : English
Service kind : Complete Main
Default : No

Could you try changing the SMB setting to legacy?

I thought SMB was selected on the Mac only?

In infuse I only have a choice between auto and legacy under the cache section? In that section I have already tried switching to legacy and it made no difference.

If you go to the Settings > Shares > Saved Shares > Select the one where the file is > Edit Share > Advanced > SMB Version

See what it’s set at currently and if it’s auto try Legacy.

It was on auto and changing to legacy made no difference.

Surely the problem is clear - the speed isn’t high enough for the file?

That also explains perfectly why it plays a 30GB file easily

Yes. You can still check your WiFi. Are you working in 5ghz?
Are there some or many other disturbing rf sources around you?
You should find this in your router.

That’s exactly why I was exploring the change in SMB level. That will often increase the speed when you reduce protocol overhead. You may also want to try setting it to “2” just in case you’re seeing overhead from other security aspects of higher levels.

I’m going to back out of this for a bit since you’re getting directed to try different things that makes it difficult to eliminate possibilities and I don’t want to get you hosed up with multiple changes.

There are more tests you can do to see if you can eliminate the pauses in playback we can try after you go through what the other users are suggesting.

There is a general rule, if you make tests.
Only do one change at a time.
So you can check precisely, what might improve the situation.
You should check the smb level as well as the WiFi.

I did make each change once, on its own before testing.

I guessed so. Just wanted to point out, that there is no contradiction between different ways of solving the problem.
So, were you able to make any progress?