Safari not working for streaming

[johnnytucats]

I keep getting an error trying to use Safari 14.0.1 in macOS 10.4.6.

Diagnostics (copied/pasted)

Build number8OSMac OS 10.14.6BrowserSafari 14.0.1Flash version0Statusin homeEntitlementstransactions, cdvr, cvod, tve-vod, tve-linear, clinear, estLast fingerprintcloudtv_web_polymer_6.5.0_prod_1605621997574_60144Stream providerprimetimeVideo IDtvgrid/listing/2005864611171400109/detail/?channelId=5733576595026241104Stream IDtag:xfinitytv.comcast.net,2013:channel-station:7485918386997917117:chNum:1111:callSign:CNNHD#stream:format:HLSError codeTVAPP-00273Error descriptionMSE ERRORSError aux infohttp://ccr.linear-nat-pil-red.xcr.comcast.net/CNNHD_HD_NAT_16141_0_5646493630829879163.m3u8?format=redirectVideo Provider1111 CNNHDVideo SourceTVListingDetailVideo TitlePoppy Harlow, Jim Sciutto

[Rustyben]

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@johnnytucats wrote:

I keep getting an error trying to use Safari 14.0.1 in macOS 10.4.6.

Diagnostics (copied/pasted)

Build number8OSMac OS 10.14.6BrowserSafari 14.0.1Flash version0Statusin homeEntitlementstransactions, cdvr, cvod, tve-vod, tve-linear, clinear, estLast fingerprintcloudtv_web_polymer_6.5.0_prod_1605621997574_60144Stream providerprimetimeVideo IDtvgrid/listing/2005864611171400109/detail/?channelId=5733576595026241104Stream IDtag:xfinitytv.comcast.net,2013:channel-station:7485918386997917117:chNum:1111:callSign:CNNHD#stream:format:HLSError codeTVAPP-00273Error descriptionMSE ERRORSError aux infohttp://ccr.linear-nat-pil-red.xcr.comcast.net/CNNHD_HD_NAT_16141_0_5646493630829879163.m3u8?format=redirectVideo Provider1111 CNNHDVideo SourceTVListingDetailVideo TitlePoppy Harlow, Jim Sciutto

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try uninstalling flash (no longer needed). also try the chrome browser.

[johnnytucats]

Flash is and has been uninstalled.

This is an old MacBook and, historically, Safari had handled full screen video adequately, Firefox is next-best (but not great), and Chrome is unusable.

Would still like to know why these problems arise since Safari 14 came out and if there's a fix. I'd seen another post where someone at Comcast said the programmers were working on it but I guess it's not a priority.