Hi Paul!
> The method I use to track packages is to search at
> https://guix-hpc.bordeaux.inria.fr/browse
Thanks! My bad, I knew about this site but I never tracked a package,
it is very useful. When I finish with the videos I will see if I can
shed some light at least.
> Perhaps your test has r
Hi Laura,
> I found the reason for this.
Great.
> I wanted to take a look at how totem was packaged but I can't find
> it.
The method I use to track packages is to search at
https://guix-hpc.bordeaux.inria.fr/browse
In this case a search for 'totem' points to the definition at
gnu/packages/gn
Hi!
On Thu, May 23, 2019 at 7:14 AM Paul Garlick
wrote:
> Did this problem resolve itself?
>
> I tested 01-installation-from-script on my system without seeing any
> interruption. I am testing with totem version 3.26.0 on Ubuntu 18.04.
I found the reason for this.
I have a minimal installation
Hi Laura,
> BTW, I finished generating the videos.
> Sth weird happens with totem. I end up having a segmentation fault,
Did this problem resolve itself?
I tested 01-installation-from-script on my system without seeing any
interruption. I am testing with totem version 3.26.0 on Ubuntu 18.04.
B
Hi :)
> Hello Laura,
>
> Laura Lazzati ezt írta (időpont: 2019. máj. 21.,
> K, 4:52):
>>
>> Hi!
>>
>>
>> > For what is worth, they could also be uploaded to https://archive.org/
>> Interesting! I was thinking about sth internal for the community first
>> but the environment for the creation is a
Hello Laura,
Laura Lazzati ezt írta (időpont: 2019. máj.
21., K, 4:52):
> Hi!
>
>
> > For what is worth, they could also be uploaded to https://archive.org/
> Interesting! I was thinking about sth internal for the community first
> but the environment for the creation is available, so no problem
Hi!
> For what is worth, they could also be uploaded to https://archive.org/
Interesting! I was thinking about sth internal for the community first
but the environment for the creation is available, so no problem for
me. What do the others think?
BTW, I finished generating the videos.
Sth weird
On Fri, 10 May 2019 16:57:11 -0500 Laura Lazzati
wrote
> Hi Gábor :)
>
> > I will ask on Monday.
> Thank you :)
For what is worth, they could also be uploaded to https://archive.org/
Hi!
> Yes. I think that the total duration of each cli session is now good.
> However, there may be improvements in a few places to further
> synchronize the narration with the screen output.
>
> For example, if a particular output is displayed slightly ahead of the
> narration one could add some
Hi Gábor :)
> I will ask on Monday.
Thank you :)
Regards!
Laura
Hi Laura,
> Could you re-build the other videos and check the internal timings?
> This is the fine adjustment that synchronizes the audio with the
> command line output.
> By this, do you mean checking that the audio matches the video,
> taking into account that if I have to add some silence in b
Hello!
Laura Lazzati ezt írta (időpont: 2019. máj.
9., Cs, 16:58):
> Hi Paul!
>
> On Wed, May 8, 2019 at 8:14 PM Paul Garlick
> wrote:
> >
> > Hi Laura,
> >
> > > Now I am generating all the videos and will be pushing the changes
> > > asap.
> >
> > Great stuff.
> >
> > I have made a start, set
Hi Paul!
> I can do the coarse adjustment on that one, to set the overall duration
> and make sure that the audio streams are not truncated.
I have already pulled and I am building all the videos.
> Could you re-build the other videos and check the internal timings?
> This is the fine adjustment
Hi Laura,
> I see the only one that needs to be finished is 04-packaging3.
> Would you like me to adjust it?
I can do the coarse adjustment on that one, to set the overall duration
and make sure that the audio streams are not truncated.
Could you re-build the other videos and check the internal
Hi Paul!
On Wed, May 8, 2019 at 8:14 PM Paul Garlick
wrote:
>
> Hi Laura,
>
> > Now I am generating all the videos and will be pushing the changes
> > asap.
>
> Great stuff.
>
> I have made a start, setting the durations for the first three videos.
> If you pull the changes you can check the inne
Hi Laura,
> Now I am generating all the videos and will be pushing the changes
> asap.
Great stuff.
I have made a start, setting the durations for the first three videos.
If you pull the changes you can check the inner timings as well. The
sum of the sleep commands should now be correct for th
Hi!
> Great. These are the same, my timings expressed in seconds yours in
> minutes and seconds.
Oh, didn't notice that.
> So we should be able to finish from here without major obstacles.
> However, I suspect that the cli timings that you did previously will
> need to be re-checked as we will no
Hi Ricardo,
> Are you saying you want to take snapshots in larger intervals and pad
> the intermediate frames with duplicates of previous frames?
Thank you for writing the snap! procedure. It is writing the output as
intended.
The problem we ran into was to do with the timing. If you go back
Paul Garlick writes:
> I think we are seeing a difference between wall-clock time and cpu
> time. In the screen file I can see there is a snap! procedure that
> writes a frame to disk after each interval. It looks as if the disk
> i/o is interrupting the sleep counter and introducing a delay
Hi Laura,
> My good news are that I get the 10 secs difference, the bad ones that
> the timing is different:
> 00:01:18.40800
> and
> 00:01:28.40700
> Any clue?
Great. These are the same, my timings expressed in seconds yours in
minutes and seconds.
I think we can live the millisecond d
Hi Paul!
> I have implemented the repeat procedure and pushed the commit to the
> repository.
>
> > I definitely HAVE TO learn Guile.
>
> This is a good example.
>
> There is some arithmetic needed to convert the sleep durations, in
> milliseconds, to frames, using the frame rate. If you have see
Hi Laura,
> I like testing (and trying to break) stuff - I
> wished this worked well though :/
I have a new version to test. It's unbreakable though, this one!
I have implemented the repeat procedure and pushed the commit to the
repository.
> I definitely HAVE TO learn Guile.
This is a good
Hi Paul!
> Thank you for testing. The results are different from my system.
You are welcome :) I like testing (and trying to break) stuff - I
wished this worked well though :/
>
> I think we are seeing a difference between wall-clock time and cpu
> time. In the screen file I can see there is a
Hi Laura,
> firstCli originally gives me a length of 00:01:54.84700
> Then, adding the sleep metacommand I get 00:02:18.24800
>
> As regards secondCli, originally: 00:00:59.60800
> And adding the sleep metacommand: 00:01:11.64800
Thank you for testing. The results are different
Hi Paul :)
I ran made the videos for 02dalyuse1 with the cli session files
untouched, using the new screen script.
Then I added :#sleep 1 in the end of each cli file and got weird timings :$
firstCli originally gives me a length of 00:01:54.84700
Then, adding the sleep metacommand I get 0
Hi Paul!
> In my case I was noticing erratic intervals produced by the sleep
> commands. So '#:sleep 1000' gave a 6 s pause and '#:sleep 13000' gave
> a 26 s pause, for example. After the changes the commands produce the
> expected results
I am creating the videos with the cli session as it was,
Hi Laura,
> With the new changes, right?
Yes.
In my case I was noticing erratic intervals produced by the sleep
commands. So '#:sleep 1000' gave a 6 s pause and '#:sleep 13000' gave
a 26 s pause, for example. After the changes the commands produce the
expected results.
Best regards,
Paul.
Hi!
> It would be great if you can test the accuracy on your system too. If
> you add '#:sleep 1' to one of the session files, for example, does
> it make the cli video 10 seconds longer?
With the new changes, right?
Regards!
Laura
Hi Laura,
> I see. I was testing with the current screen file. Please, let me
> know when you push the changes so that I make all the videos again
> and adjust what is necessary.
Many thanks. I have pushed the changes to the repository.
It would be great if you can test the accuracy on your sy
Hi Paul!
> Working on the timings for 02-daily-use1 I have found that I have
> needed to make a couple of changes to the 'hesitate' procedure in the
> screen script. I have been finding that the pause introduced by the
> sleep command is not accurate, making it difficult to set the right
> value
Hi Laura,
> > I have made a start with the 01-installation-from-script video. I
> > am using Firefox version 66.0.3 to test.
> Ok I will go on with the followings then!
Working on the timings for 02-daily-use1 I have found that I have
needed to make a couple of changes to the 'hesitate' procedu
Hi! :)
On Fri, Apr 26, 2019 at 7:01 PM Paul Garlick
wrote:
>
> Hi Laura and All,
>
> I have determined the cause of the playback problems with Firefox and
> pushed a fix to the videos.git repository.
Great :)
>
> Essentially, a limitation of the treatment of opus audio streams in
> Firefox mea
Hi Laura and All,
I have determined the cause of the playback problems with Firefox and
pushed a fix to the videos.git repository.
Essentially, a limitation of the treatment of opus audio streams in
Firefox means that videos with gaps in the audio stream are not played
properly.
There were two
Hi Laura,
> I deleted all the videos and made them again
> and now I don't see that issue anymore.
Ah, good news!
> For this, what I could do is generate the cli sesison video with the
> "silence1.mp3" to have duration1, and then compare it with the
> duration of cli1.mp3 (for instance). Then,
Hi Paul!
> This plays at the right speed for me in Videos/Totem (version 3.26).
Don't know what happened. I deleted all the videos and made them again
and now I don't see that issue anymore.
>
> duration1 (video stream): 1 minute 29 seconds
> duration2 (audio stream): 1 minute 18 seconds
>
> Th
Hi Laura,
> Now, as regards the colours, it works with totem too :)
> But the cli sessions are at kind of super speed now, it happens
> watching the full video, or the separate cli session videos. I've
> tried it with totem, mvp and vlc. Any clue about it?
I have not seen this effect on the play
Hi everybody!
These days I will be migrating my VM since I am running out of space,
so sorry for the delay :/
I am testing right now.
> Commit 4bd2e78b893fef5ce1f12bec895ee8234cabaf1f fixes the colors.
> ffmpeg needed a different pixel format to set the chroma subsampling
> correctly [1].
>
> I
Hi,
Ludovic Courtès writes:
>> I have tested Parole and Videos media players and Firefox and Midori
>> browsers. All work except Firefox, which gives the message:
>>
>> 'Video can't be played because the file is corrupt'
>
> Ricardo and I encountered that problem before… but I don’t remember ho
Hi Laura and Ludo,
> the colours are changed. Ie: the dark gray turns
> green, and the white turns somewhat pink.
Commit 4bd2e78b893fef5ce1f12bec895ee8234cabaf1f fixes the colors.
ffmpeg needed a different pixel format to set the chroma subsampling
correctly [1].
I have been able to play the ne
Hi Paul!
Sorry, I've got up to date with this.
> Is Firefox the browser you are testing with?
Yes, I tested both with Firefox and Icecat and get the same message,
that it is corrupt :/
You mentioned you tried totem, right? In my case it runs and I can
watch the video but the colours are changed. I
Hi Paul,
Paul Garlick skribis:
>> Can you tell me which players work for you? I tried with my browser
>> and it still tells me that the file is corrupt :/
>
> I have tested Parole and Videos media players and Firefox and Midori
> browsers. All work except Firefox, which gives the message:
>
> '
Hi Laura,
> Can you tell me which players work for you? I tried with my browser
> and it still tells me that the file is corrupt :/
I have tested Parole and Videos media players and Firefox and Midori
browsers. All work except Firefox, which gives the message:
'Video can't be played because the
Hi Paul!
Sorry fot the delay.
> I have been able to match the aspect ratio of the cli videos to the
> nocli videos. With ffmpeg there is a filtergraph that can be added to
> pad the images. The result is a smooth transition between the two
> types. There is no longer flickering or crashing in t
Hi Laura,
> Thank you so much for fixing this. It was in my TODO list, but it is
> GREAT and if you can share your knowledge we can work and make the
> videos available asap :)
I have been able to match the aspect ratio of the cli videos to the
nocli videos. With ffmpeg there is a filtergraph
Hi Paul :)
O is fixed in commit
> 7180fff4ecb46cfed41c6214579a53af6a636a21.
>
> The new frame rate is 25 fps. This is the European standard for PAL/HD
> video.
>
> The file sizes are not dramatically affected by the change. The first
> video is reduced in size from 11MB to 10 MB, for example.
T
Hi Ricardo,
> This is probably my mistake. I didn’t pay much attention to frame
> rates when I first built the scripts for generating the CLI videos.
>
Ok, thanks. This is fixed in commit
7180fff4ecb46cfed41c6214579a53af6a636a21.
The new frame rate is 25 fps. This is the European standard fo
Laura Lazzati writes:
>> Was there a reason for the difference?
> My honest answer is: i don't know.
This is probably my mistake. I didn’t pay much attention to frame rates
when I first built the scripts for generating the CLI videos.
--
Ricardo
Hi Paul!
> I have pushed all of the new audio recordings to guix/videos.git.
Yeah :) I saw them, that is why I didn't answer back, was planning to
see the matching of the other these days :)
> There were two extra svg images needed (for 02-daily-use2 and 04-
> packaging1) to match up with the audi
Hi All,
> Yes! I am working on them to have the best match we can :)
Nice, thanks Laura!
I have pushed all of the new audio recordings to guix/videos.git.
There were two extra svg images needed (for 02-daily-use2 and 04-
packaging1) to match up with the audio. I have added templates for
them.
Hi!
> I had help from a sound engineer who is familiar with the microphone
> set-up and the recording process.
>
GREAT!
>
>
> For the cli sessions we used the timings in your recordings as a guide
> to synchronize my voice with the screen. I notice that there are
> 'sleep' commands in the session
El 3/04/19 a las 9:05 a. m., Paul Garlick escribió:
Hi Laura,
The recording session went very well yesterday. We were able to make
all the recordings in a studio without having to worry about background
noise.
I had help from a sound engineer who is familiar with the microphone
set-up and the
Hello Paul,
Paul Garlick ezt írta (időpont: 2019.
ápr. 3., Sze 16:05):
> Hi Laura,
>
> The recording session went very well yesterday. We were able to make
> all the recordings in a studio without having to worry about background
> noise.
>
That's wonderful. Thanks so much. I will listen to th
El 3/04/19 a las 9:05 a. m., Paul Garlick escribió:
Hi Laura,
The recording session went very well yesterday. We were able to make
all the recordings in a studio without having to worry about background
noise.
I had help from a sound engineer who is familiar with the microphone
set-up and the
Hi Laura,
The recording session went very well yesterday. We were able to make
all the recordings in a studio without having to worry about background
noise.
I had help from a sound engineer who is familiar with the microphone
set-up and the recording process.
> Great! :) Let me know when you
Hi Paul!
> Thank you for uploading the cli audios for the packaging3 video. That
> completes the set!
Yeah!
>
> I will be going to the studio in half an hour (11.00am UTC). They have
> a space with low background noise. However, I will ask for a short
> 'silence' recording too, so that we can
Hi :)
> Sorry, I am late to the party. To clarify things, the following is
> happening here:
> 1. at first guix is built from source, in a guix environment guix
> 2. the package is added
> 3. the package build is tested using pre-inst-env guix build package
>
> So, the environment is not for r-asp
Hello,
Laura Lazzati ezt írta (időpont: 2019.
ápr. 1., H, 20:02):
>
> Hi Paul!
>
>
> > I have finished updating the transcripts and I am preparing to do the
> > recordings tomorrow.
> Great! Could you remind me in UTC at which time of the day? Because I
> generally have to record them at 00 UTC t
Hi Laura,
> Great! Could you remind me in UTC at which time of the day? Because I
> generally have to record them at 00 UTC to reduce the environmental
> noise. And then match them.
>
Thank you for uploading the cli audios for the packaging3 video. That
completes the set!
I will be going to t
Hi Paul!
> I have finished updating the transcripts and I am preparing to do the
> recordings tomorrow.
Great! Could you remind me in UTC at which time of the day? Because I
generally have to record them at 00 UTC to reduce the environmental
noise. And then match them.
>
> One question about the
Hi Laura,
I have finished updating the transcripts and I am preparing to do the
recordings tomorrow.
One question about the makefile: am I right in thinking that the
makefile automatically adjusts the duration of each slide according to
the duration of the corresponding audio file? In other word
Hi Laura,
I am working on the 04-packaging2 transcript. I have a question on
Slide 2.
Shouldn't the 'guix environment' step be later in the list of steps?
If I was packaging the aspi package I would do:
$ guix environment --pure r-aspi
after defining the package first. Then I would attempt t
Hi Paul!
> Shouldn't the 'guix environment' step be later in the list of steps?
> If I was packaging the aspi package I would do:
>
> $ guix environment --pure r-aspi
The environment was set up in the first packaging video. As far as I
am concerned, the idea is to have a clean guix environment an
Hi Paul!
> I am 4/7ths of the way through the transcripts :)
Great! I am recording the audios in the late evening to have the less
environmental noise as possible.
>
> On the latest one , 02-daily-use2, line 9, there is the URL:
>
> https://audio.video.gnu.org/guix/everyday-use-part1.webm
>
> Is
Hi Laura,
I am 4/7ths of the way through the transcripts :)
On the latest one , 02-daily-use2, line 9, there is the URL:
https://audio.video.gnu.org/guix/everyday-use-part1.webm
Is this correct? The output in the videos subdirectory is '02-daily-
use1.webm'
Best regards,
Paul.
Hi Paul!
> I have found that the flickering is caused by the change in aspect
> ratio as the video moves from the slide view to the screen view (and
> back). Parole and Videos have a default 'Auto' setting for aspect
> ratio that re-sets the aspect ratio during playback. If I change to a
> cons
Hi Laura,
> If others could test with their own players that may give us clue.
> Sure, as many players, the better.
I have found that the flickering is caused by the change in aspect
ratio as the video moves from the slide view to the screen view (and
back). Parole and Videos have a default 'Au
El 25/03/19 a las 5:49 p. m., Laura Lazzati escribió:
[...]
The question about flickering could take some investigation. Do we
know yet whether this is consistent across all players? or are there
examples where flickering does not happen?
With VLC and mpv they are fine. Please, try them ant l
Hi :)
Sorry for my late response today, have just arrived home.
> Yes, sounds a good plan. I will aim to work through the videos to
> build each one, then listen to the playback and then edit the
> transcript at a rate of one-per-day this week. That should mean
> finishing them all by the end o
Hi Laura,
> I have just thought, may you see the transcripts of all the videos,
> and arrange them if you find a better way of saying things in native
> English, and then I record the CLI session videos and create
> subtitles for them? Do you find this workflow fine?
Yes, sounds a good plan. I w
Hi :)
Sorry Gábor for not asking all of you, noticed were ccd's after
sending the mail. Miss having both of you as mentors :/
> I believe if the timing is not disturbed to much by this, then the narration
> and
> fixing the video can go on in parallel. Wdyt?
It's true, they are separate things.
Hello,
Laura Lazzati ezt írta (időpont: 2019.
márc. 24., V, 4:48):
>
> Hi Paul and Ricardo
>
> > Have you seen this too?
> We have been using mpv and VLC, don't know, Ricardo, WDYT? should we
> fix this or go on with the narration?
>
I belive if the timing is not disturbed to much by this, then
Hi Paul and Ricardo
> Have you seen this too?
We have been using mpv and VLC, don't know, Ricardo, WDYT? should we
fix this or go on with the narration?
I have just thought, may you see the transcripts of all the videos,
and arrange them if you find a better way of saying things in native
English
Hi Laura,
> Which player are you using?
I have tried with Parole (XFCE) and Videos (GNOME). The flicker seems
to display something like slide-screen-slide-screen in rapid
succession. I would expect a simple slide->screen jump at the
beginning of the session and a screen->slide jump at the end.
Hi Paul!
> I have updated the transcript for the 03-help video and the changes are
> ready to view in the repo.
This is GREAT!!! :)
>
> Next I have built the 01-installation-from-script video. I notice that
> there is no sound for the cli sessions. Will you adding transcripts
> for these?
Yes,
Hi Laura,
I have updated the transcript for the 03-help video and the changes are
ready to view in the repo.
Next I have built the 01-installation-from-script video. I notice that
there is no sound for the cli sessions. Will you adding transcripts
for these?
Also, there is a brief flicker in t
Hi!
> Excellent!
Yeah! That's really GREAT! And I git pulled without any issue :),
thank you! And let me know how we can do with the cli session videos,
since they don't have a reference.
>
> @Laura, Are the texts for the narrations already finalized? I don’t
> remember if they have been discusse
Paul Garlick writes:
> Also, I have provisionally booked next Friday 29th March to do the
> recordings. I will be getting some help from a sound engineer to use
> the gear in the studio. All being well it should be possible to do all
> the recordings in one session :)
Excellent!
@Laura, Are
Hi Laura,
> I have just pushed the last video.
> Please, let me know if everything is fine.
'git pull' and 'git push' are working for me. I have updated the
README file as an initial test commit. Please check that you are happy
with the changes.
Also, I have provisionally booked next Friday 29
Hi Paul!
I have just pushed the last video.
Please, let me know if everything is fine.
Regards :)
Laura
Hi Paul ;)
> Thank you. I will also check through the transcripts and make any
> slight changes needed to make the narration more-natural-for-me to
> speak. I will be careful not to alter the timings or meanings.
Thank you. The transcripts have a timing as an idea, but speak
spontaneously, like
Hi Laura,
> I have realized that I have a typo and have to make a minor change in
> 04-packaging2, that will affect the audio and of course the
> transcript. Just wanted to let you know. Will push it ASAP.
Thank you. I will also check through the transcripts and make any
slight changes needed to
HI Paul!
I have realized that I have a typo and have to make a minor change in
04-packaging2, that will affect the audio and of course the
transcript. Just wanted to let you know. Will push it ASAP.
Regards :)
Laura
Hi Laura,
> If you want, you can build them by cloning
> git.savannah.gnu.org/git/guix/videos.git.
I have cloned the repository and built the first video with:
$ ./build-video.sh 03-help
This generates 03-help.webm which I can play with Parole, for example.
Very nice work!
I can see that ther
Hi Paul!
> This generates 03-help.webm which I can play with Parole, for example.
> Very nice work!
Thank you and great! We have another player that plays our videos fine :)
> I can see that there is an 'audios' subdirectory with one audio file
> per svg file. So my task, if I understand correct
Hi!
> Sure. Can you give me a few more details about what is required:
Oh, that is really great, thank you very much :)
> i) how many videos are there?
Up to now, six (I have to upload the last one). But we can try with 03-help.
If you want, you can build them by cloning
git.savannah.gnu.org/git
Hi Laura,
> I just wanted to ask you if you are still interested in contributing
> being the narrator of our videos.
Sure. Can you give me a few more details about what is required:
i) how many videos are there?
ii) are there two types of video, one for command line sessions and one
for slides?
Hi Paul!
How are you?
I just wanted to ask you if you are still interested in contributing
being the narrator of our videos.
They have my voice now, and a transcript. Of course that I will
mention the timing, and arrange the subtitles for the command line
session videos, so that you just have to
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