Beirdobot, irc.freenode.net

Monday, February 17th, 2020, 01:24 UTC

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[08:07:06]

markk_:

warpme_: can you post a log (-v playback) for the audio issues. have you tried adjusting the audio read ahead setting?

[08:46:40]

stuarta:

markk_: re trac hooks, they fail more often than they work

[08:46:53]

stuarta:

markk_: every few days i go and manually resend them

[08:50:29]

warpme_:

markk_: here it is: https://pastebin.com/TB6DREqR it was single playback where at end playback becomes jumpy with cracking audio. this 1.5h recording plays zero issues with audio=null

[08:57:34]

markk_:

warpme_: the log looks strange – in relation to what you say is happening. it starts dropping frames because the decoder appears to 'slow down'. i.e. you suddenly get 'Waiting for video buffers...' messages.

[08:59:42]

markk_:

but that shouldn't impact audio output – it should just drop frames and the audio should just carry on. 2 things I would try. Either increase your 'audio read ahead' value – which is easy to test – or disable the code here: https://github.com/MythTV/mythtv/blob/master/ . . . ext.cpp#L136

[09:01:51]

markk_:

setting the lower number of capture buffers is a Pi3/4 thing – you may want to just return from that function – or maybe even increase the number of buffers. I think the default is 20.

[09:02:27]

markk_:

it maybe that at that point in the video, the number of reference frames in use changes (i.e. increases) which starves the decoder of buffers.

[09:03:24]

markk_:

warpme_: does the issue always happen at exactly the same point in the video?

[09:09:24]

warpme_:

log looks also strange for me. Initially i was sure issue is related to 3d driver doing egl rendering stage. but i discover perfect playback of bluray rips (1080p). As blurays plays ok – I started to have another hypothesis: bluray has much less bit-stream error rate compared to 1080i tv recordings – so issue might be due video decoder low tolerance for stream errors. but recently i done test for 1080i tv recording with

[09:09:24]

warpme_:

audio=null and discover perfect playback. This tells me that e2e video pipeline is ok (and this is very good news) and root cause is within 1\audio or 2\av sync. Re: read-ahad & buffers: let me play a bit with this. will report soon :-)

[09:12:38]

stuarta:

markspieth22: can you clarify how gettext is not needed? the android libs build needs it in order to build fontconfig

[09:14:04]

stuarta:

markspieth22: this is before i even get to building mythtv

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[11:24:54]

markspieth:

stuarta: IDK. All I know is that it is not explicitly needed. it may be provided implicilty by another lib or an alternative like iconv or icu may be used instead.

[11:26:55]

stuarta:

hmmm, i wonder how to get fontconfig to build then....

[11:27:22]

stuarta:

i'm guessing icu doesn't provide it, as that is built before fontconfig

[11:27:47]

stuarta:

the gettext build errors aren't helping matters :(

[11:34:42]

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[11:55:11]

markspieth2:

makelibs.sh just works

[11:55:46]

markspieth2:

lets go through your android install

[11:56:10]

stuarta:

been following this -> https://github.com/MythTV/packaging/tree/master/android

[11:57:02]

stuarta:

the only deviation is rather than "workdir" i've used ~/Projects/MythTV/android

[11:58:31]

markspieth2:

that means you should probably have a ~/android pointing to that or is that the packging dir?

[11:59:29]

stuarta:

that's where the checkouts live, the packaging/andriod is at ~/Projects/MythTV/android/packaging/andriod

[11:59:49]

stuarta:

~/android matches what is described in the doc

[12:00:07]

markspieth2:

then you should have mythtv installed in ~/Projects/MythTV/android/mythtv

[12:00:11]

markspieth2:

cloned that is

[12:00:24]

stuarta:

correct

[12:00:50]

markspieth2:

what do you have installed in ~android, ndk and sdk wise, also build tools

[12:01:29]

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[12:01:34]

markspieth2:

Im having a few server issues which is inhibiting my browsing which im trying to resolve. I hope mythbackend is not suckingit dry

[12:02:22]

markspieth2:

I just updated it yesterday

[12:02:28]

stuarta:

android is a link to Android which has the contents exactly as per the docs (ie links to android-ndk android-sdk-linux android-studio and Sdk)

[12:02:47]

markspieth2:

versions is what I was getting at

[12:03:00]

stuarta:

android-ndk -> Sdk/ndk/21.0.6113669

[12:03:26]

markspieth2:

ndk 24,28,29 depending what is set. That is for 29

[12:04:05]

stuarta:

yeah installed those versions

[12:04:11]

stuarta:

am i missing some linke

[12:04:35]

markspieth2:

they build tools prehaps which I had as 29.0.3 I think

[12:04:55]

markspieth2:

sdk is a different number

[12:05:01]

stuarta:

yeah

[12:06:01]

stuarta:

i have ~/android/android-sdk-linux/build-tools/29.0.3/

[12:06:53]

markspieth2:

I the github page the same as readme.md?

[12:07:02]

markspieth2:

in the repo that is

[12:07:42]

stuarta:

yes. github converts the readme.md into the page

[12:08:46]

markspieth2:

what cmake do you have installed?

[12:09:29]

markspieth2:

mythcommflag has 34G virt and 13g res. no wonder it sucks

[12:09:31]

stuarta:

cmake-3.16.3–1.fc31.x86_64

[12:10:25]

markspieth2:

very recent. Im on 3.12. something to check.

[12:10:50]

stuarta:

what os are you using on the build host?

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[12:11:02]

markspieth2:

debian testing

[12:11:10]

stuarta:

hmmm

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[12:11:44]

markspieth2:

No sure what peter and david are using. shouldnt mater

[12:11:52]

stuarta:

no it shouldn't

[12:12:50]

markspieth2:

Im back so now I can check my android install

[12:13:47]

stuarta:

cleaned out lib64 and libinstall64 and trying a new build, should fail in around 10mins

[12:14:08]

markspieth2:

make distclean everything

[12:14:16]

markspieth2:

that does a complete clean build

[12:14:40]

markspieth2:

I will do a fresh one too for the logs

[12:16:05]

markspieth2:

64bit?

[12:16:20]

markspieth2:

of course from the dir names

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[12:22:09]

markspieth2:

Also I have a buildrc file with

[12:22:17]

markspieth2:

. $ANDROID_ROOT/keys

[12:22:18]

markspieth2:

[12:22:18]

markspieth2:

IGNOREDEFINES="-DIGNORE_SCHEMA_VER_MISMATCH -DIGNORE_PROTO_VER_MISMATCH"

[12:25:27]

markspieth2:

in libiconv I have

[12:25:28]

markspieth2:

checking for xgettext... /usr/bin/xgettext

[12:25:50]

markspieth2:

checking for GNU gettext in libc... no

[12:25:50]

markspieth2:

checking for GNU gettext in libintl... no

[12:27:00]

markspieth2:

also in exiv2

[12:27:39]

markspieth2:

-- Native language support........ NO

[12:27:39]

markspieth2:

[12:27:40]

markspieth2:

gettext is required for native language support. Make sure the

[12:27:40]

markspieth2:

gettext header files are installed. You can get gettext from

[12:27:40]

markspieth2:

http://www.gnu.org/software/gettext/

[12:27:54]

markspieth2:

NP there

[12:32:26]

markspieth2:

fontconfig same as for libiconv

[12:32:42]

markspieth2:

Do you have gettext-tools installed on the host?

[12:33:29]

markspieth2:

at teh endo of fontconfig I have

[12:33:53]

markspieth2:

/bin/mkdir -p '/home/mark/debian/mythtv/git/packaging/android/libsinstall64/share/gettext/its'

[12:33:53]

markspieth2:

/usr/bin/install -c -m 644 fontconfig.its fontconfig.loc '/home/mark/debian/mythtv/git/packaging/android/l

[12:33:53]

markspieth2:

ibsinstall64/share/gettext/its'

[12:37:48]

markspieth2:

I also have 2 sections that begin with

[12:37:48]

markspieth2:

if test "fontconfig" = "gettext-tools"; then \

[12:37:48]

markspieth2:

which does various installs to share/gettext/po/ and po-config

[12:39:37]

markspieth2:

My top level make shows

[12:39:37]

markspieth2:

./makelibs.sh --arm64 all

[12:39:38]

markspieth2:

Using hardcoded tools version 29.0.2

[12:39:38]

markspieth2:

Mon 17 Feb 23:20:11 EST 2020

[12:39:38]

markspieth2:

makelibs.sh

[12:39:38]

markspieth2:

ANDROID_NATIVE_API_LEVEL [SDK]: 29

[12:39:38]

markspieth2:

ARM64: 1

[12:39:38]

markspieth2:

if that helps

[12:39:59]

markspieth2:

building mythtv now

[12:40:16]

markspieth2:

I can upload my log if it helps

[12:51:20]

markspieth2:

stuarta: sent you an email to squashedfrog with the log and some extras

[12:53:33]

markspieth2:

also on the host I have gettext 0.19.8.1–7 amd64 installed. Provides the xgettext found on the host.

[12:53:50]

markspieth2:

may be another prereq

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[14:03:05]

stuarta:

fontconfig doesn't even get through distclean for me

[14:11:58]

stuarta:

and no binary called gettext-tools

[14:22:59]

stuarta:

oh ffs

[14:23:08]

stuarta:

it appears to have needed gettext-devel

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hampton:

stuarta: Want a f32 builder? I cloned my rawhide builder last night and switched it to branched (aka f32).

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[19:46:11]

warpme_:

markk_: took me a bit of time to get some tests. First info: increasing cap_buffers fixes issue. With 16–20 buffers I have almost perfect playback. This is v.good news as finally we may say mythtv can go on multiple arm platforms – those with stateful decoders. I prepare some statistics to help adjust optimal cap_buffers: https://pastebin.com/wNkAu19T In my opinion it is very desirable to add settings in advanced

[19:46:12]

warpme_:

playback section (like audio read-ahead) to fine-tune optimal cap_buffers as platforms with 1G RAM + heavy themes will require minimal low cap_buffers as they are allocated in kernel CMA pool. Other platforms – like amlogic requires 16 buffers to work nicely (20 to safe margin). Also – for testing on new platforms – cab_buffers setting will allow quick verification: is jumpy playback due too low cap_buffers or by other

[19:46:12]

warpme_:

thing....

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warpme_:

once again: fantastic work with v4l2 in mythtv!

[19:49:15]

warpme_:

i saw s912 tv boxes (capable to do 4k60p) for 25$. 25$ for box+power plug+IR is killer – even compared to RPI... Finally we can have myth on them!

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