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01:18 schestowitz; I have just tested the two-file script combo
01:18 schestowitz; it worked great the first time around!
01:18 schestowitz; I was surprised
01:18 schestowitz; now, it still gave me this:
01:18 schestowitz; stat: cannot stat 'test-video.webm': No such file or directory
01:18 schestowitz; and no date in the resultant file
01:18 schestowitz; the script is in git master
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07:52 Techrights-sec; looking at the ffmpeg converson process and whether it can launch rsync,
07:52 Techrights-sec; the size of the new file is tracked as it grows:
07:52 Techrights-sec; ffmpeg -y -progress - -nostats -i ...
07:52 Techrights-sec; That can be piped into awk with no buffers and processed, but in the case
07:52 Techrights-sec; of transcoding the source file will be a very different size than the destination
07:52 Techrights-sec; file. And in the case of only adding metadata there is no need to transcode
07:52 Techrights-sec; so the copy option can be used instead.
07:52 Techrights-sec; ffmpeg -y -progress - -nostats -i old.webm -c copy -metadata title="something" n
07:52 Techrights-sec; ew.webm
07:52 Techrights-sec; That should just take a few seconds.
07:52 Techrights-sec; So would inserting the following at line 222 speed things up
07:53 Techrights-sec; -c copy \
07:53 Techrights-sec; as in
07:53 Techrights-sec; $ git diff preview.sh
07:53 Techrights-sec; diff --git a/Desktop-Utils/preview.sh b/Desktop-Utils/preview.sh
07:53 Techrights-sec; index 9ca7e53..98b1c28 100644
07:53 Techrights-sec; --- a/Desktop-Utils/preview.sh
07:53 Techrights-sec; +++ b/Desktop-Utils/preview.sh
07:53 Techrights-sec; @@ -219,6 +219,7 @@ echo ' ================================================='
07:53 Techrights-sec; set -e
07:53 Techrights-sec; nice ffmpeg \
07:53 Techrights-sec; + -c copy \
07:53 Techrights-sec; -f concat \
07:53 Techrights-sec; -i ./recipe.txt \
07:53 Techrights-sec; -metadata title="$VIDEO_NAME" \
08:29 schestowitz-TR; it would be nice to speed it up
08:29 schestowitz-TR; but woulkd copy work when combining 3 files?
08:29 schestowitz-TR; testing...
08:32 schestowitz; [mov,mp4,m4a,3gp,3g2,mj2 @ 0x5644e4342700] Auto-inserting h264_mp4toannexb bitstream filter
08:32 schestowitz; Unknown decoder 'copy'
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08:44 schestowitz-TR; I mfound the bug!!
08:47 Techrights-sec; It might work when combining three files, but I haven't tried it that way.
08:47 schestowitz-TR; they are also of different dimension
08:47 schestowitz-TR; the commonality: audio rates, ratio, format
08:49 Techrights-sec; Then reecoding must happen and that will be slow.
08:49 schestowitz-TR; it is VERY slow indeed, but last year I researcher this and it looked like there was no other way, it's not a simple conversion like the first pass
08:55 schestowitz-TR; see git
08:56 Techrights-sec; Maybe it would be best to standardize the dimensions and so on for all the
08:56 Techrights-sec; included files in advance. Then reencoding would not need to happen to merge
08:56 Techrights-sec; them.
08:57 schestowitz-TR; From what I vaguely recall, any time you merge files with different palettes and all, depending on format, the encoding stream needs to be redone
08:59 Techrights-sec; ack
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09:07 Techrights-sec; Just checked, if the appended and prepended files can be made the same specs
09:07 Techrights-sec; as the main video, then -c copy works well
09:07 schestowitz-TR; the hard part is video dimension, not aspect ratio, as that used to vary a lot
09:12 Techrights-sec; Hard to say, I have no samples which are not 1920x1080
09:12 schestowitz-TR; if we do tons of tidying up with those scripts maybe we can have a generalised framework for self-hosting videos with simple manuals. But it would take tons of work.
09:16 schestowitz-TR; the videos I make are not always the same dims
09:16 Techrights-sec; The videos listed in outro.list ought to be normalized to the same specs
09:16 Techrights-sec; as the video you record. That way the processing is done just the once
09:16 Techrights-sec; and then when you concatenate the files, ffmpeg can do it easily. Same for
09:16 Techrights-sec; intro.list.
09:16 Techrights-sec; Ah, why not?
09:17 schestowitz-TR; depends which view it starts with, screen, face, external webcam (different aspect ratio)
09:18 Techrights-sec; It'd save a lot of time, CPU, electicity, disk wear and tear, etc
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09:31 Techrights-sec; The size of the files can be estimated but not calculated until the processing
09:31 Techrights-sec; actually is finished. Similar for counting frames, ffprobe has to go through
09:31 Techrights-sec; the files linearly to get the frame count. But if the file sizes are used as an
09:31 Techrights-sec; approximation for progress, then the size field from ffmpeg -progress - -nostats
09:31 Techrights-sec; can be extracted using an AWK or Perl one liner and used to trigger an upload,
09:31 Techrights-sec; if SSH keys are used.
09:31 Techrights-sec; ack
09:33 schestowitz-TR; see latest push
09:33 schestowitz-TR; one other option I had in mind was running a timer for upload
09:33 Techrights-sec; Hmm. How do make sure that ffmpeg has enough of a head start?
09:33 Techrights-sec; You could use 'at' for upload. Or just let it go automatically when
09:33 Techrights-sec; ffmpeg is done and then launch a popup notification when it is complete.
09:33 Techrights-sec; But that's the current
09:34 schestowitz-TR; it is not at all evident from the code, but atm what happens is,
09:34 schestowitz-TR; I occasionalkly check the output and then drag and drop from dolphin
09:34 schestowitz-TR; when the timing seems roughly right
09:35 Techrights-sec; rsync or sftp could handle that automatically so you don't need to waste effort
09:35 Techrights-sec; and can turn your attention to other things until the upload-complete notificatio
09:35 Techrights-sec; n
09:36 schestowitz-TR; the goal is to serialise things a little. it can save as much as an hour sometimes
09:41 schestowitz-TR; ok, dumb question
09:41 schestowitz-TR; can I mrate-limit an upload?
09:41 schestowitz-TR; like, with scp or similar?
09:42 Techrights-sec; yes with rsync or sftp, --bwlimit= in rsync and -l in sftp
09:43 schestowitz-TR; that would still leave leave the challenge of correctly estimating the speed of upload, based on speed of size generation and its growth
09:43 schestowitz-TR; *file generation
09:45 Techrights-sec; ffmpeg -y -progress - -nostats -i old^Cebm -metadata title="so
09:45 Techrights-sec; mething" new.webm | awk '{print $1,$6} END { print "111103897"}' RS='progress=co
09:45 Techrights-sec; ntinue' OFS="\t"
09:48 schestowitz-TR; trying this now on a real file
09:49 schestowitz; z
09:49 schestowitz; nice ffmpeg -y -progress - -nostats \
09:49 schestowitz; -f concat \
09:49 schestowitz; -i ./recipe.txt \
09:49 schestowitz; -metadata title="$VIDEO_NAME" \
09:49 schestowitz; -metadata creator="Techrights" \
09:49 schestowitz; -metadata \
09:49 schestowitz; license="Creative Commons Attribution-No Derivative Works 4.0" \
09:49 schestowitz; -metadata author="Roy Schestowitz" \
09:49 schestowitz; -metadata date="$(stat --printf='%y' $VIDEO_FILE.orig.webm \
09:49 schestowitz; | cut -d ' ' -f1)" $VIDEO_FILE.webm | awk '{print $1,$6} END { print "111103897"}' RS='progress=continue' OFS="\t"
09:49 Techrights-sec; that just shows it's possible. working on something more practical...
10:02 Techrights-sec; no need to run that one to completion, the AWK part adds nothing. It just shows
10:02 Techrights-sec; that the running file size can be captured.
10:03 schestowitz-TR; ok, gif parallelism works ok now
10:03 schestowitz-TR; I suppose being able to trigger a function at 50% progress would help
10:16 Techrights-sec;
10:16 Techrights-sec; yes. testing atm
10:16 Techrights-sec; unfortunately I chose a too long segment to test on, off-by-factor-of-one error
10:16 Techrights-sec; ffmpeg -y -progress - -nostats -i x.webm \
10:16 Techrights-sec; -metadata title="someting" file.webm 2>/dev/null \
10:16 Techrights-sec; | awk -v f=$(stat -c "%s" file.webm) '
10:16 Techrights-sec; BEGIN {
10:16 Techrights-sec; cutoff=int(f/10);
10:16 Techrights-sec; print "Start uploading at ",cutoff;
10:16 Techrights-sec; }
10:16 Techrights-sec; !skip {
10:16 Techrights-sec; split($6,size,"=");
10:16 Techrights-sec; print size[2];
10:16 Techrights-sec; if(size[2]>=cutoff) {
10:16 Techrights-sec; skip++;
10:17 Techrights-sec; system("upload-script.sh &");
10:17 Techrights-sec; }
10:17 Techrights-sec; }' RS='progress=continue' OFS="\t"
10:17 Techrights-sec; the command subsitution part needs to return an integer which contains the
10:17 Techrights-sec; approximate size in bytes of the combined files.
10:17 Techrights-sec; Works with GNU Awk 5.1.0, untested in others
10:17 schestowitz-TR; is this ready to integrate and test, or still in progress?
10:18 Techrights-sec; Adjust the f/10 to f/2 or whatever fraction desired but it should work ok.
10:23 Techrights-sec; The file name is hardcoded twice and ffmpeg concat and other options are missing,
10:23 Techrights-sec; but it does trigger the script when the fraction is reached. So it will take
10:23 Techrights-sec; a little to integrate it on your end, but hopefully not much.
10:23 Techrights-sec; Are all the intros and outros more or less the same size? Or do they need to be
10:23 Techrights-sec; measured each time?
10:23 schestowitz-TR; they are 3 to 22 seconds, but compared to main "body" that's a fraction
10:24 Techrights-sec; Ok but an integer needs to get fed to AWK
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10:51 Techrights-sec; filesize=$(
10:51 Techrights-sec; awk '
10:51 Techrights-sec; /^file/ {
10:51 Techrights-sec; cmd="stat -c \"%s\" " $2;
10:51 Techrights-sec; cmd | getline s;
10:51 Techrights-sec; close(cmd);
10:51 Techrights-sec; size=size+s
10:51 Techrights-sec; }
10:51 Techrights-sec; END {
10:51 Techrights-sec; print size
10:51 Techrights-sec; }' ./recipe.txt
10:51 Techrights-sec; );
10:51 Techrights-sec; ffmpeg -y -progress - -nostats -i x.webm \
10:51 Techrights-sec; -metadata title="someting" file.webm 2>/dev/null \
10:51 Techrights-sec; | awk -v f=$filesize '
10:51 Techrights-sec; BEGIN { ...
10:52 schestowitz-TR; thanksd!!
10:56 schestowitz; roy@vonick:~$ filesize=$(
10:56 schestowitz; awk '
10:56 schestowitz; /^file/ {
10:56 schestowitz; cmd="stat -c \"%s\" " $2;
10:56 schestowitz; cmd | getline s;
10:56 schestowitz; close(cmd);
10:56 schestowitz; size=size+s
10:56 schestowitz; }
10:56 schestowitz; END {
10:56 schestowitz; print size
10:56 schestowitz; }' ./recipe.txt
10:56 schestowitz; );
10:56 schestowitz; roy@vonick:~$ echo $filesize
10:56 schestowitz; 2615970
11:04 Techrights-sec; np
11:04 schestowitz-TR; I will push to git before testing
11:05 schestowitz-TR; though I do wonder how rsync behaves when it handles an open and growing file, so I might need to add a new function
11:07 schestowitz-TR; ok, pushed, not tested yet
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11:28 Techrights-sec; ack
11:33 schestowitz-TR; testing now...
11:33 schestowitz-TR; no error, I efresh server end to see progress as it went alon g
11:33 schestowitz-TR; will test with a bigger file
11:33 schestowitz-TR; will record somsething
11:34 Techrights-sec; good
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12:20 Techrights-sec; good
12:20 Techrights-sec; Current regulations regarding product liability seem to focus around goods sold
12:20 Techrights-sec; and explicitly exclude services. An increasing amouunt of software is tied
12:20 Techrights-sec; or run on remote servers, putting them into a hybrid category. As these lean tow
12:20 Techrights-sec; wards becoming services (e.g. MSOffice) how much of that is being done as a
12:20 Techrights-sec; dodge from product liability regulations? Softare is covered, technically, but
12:20 Techrights-sec; ignored so far. Products, thus softwatre, are covered in particularly when they
12:20 Techrights-sec; are used as advertised. Therefore when M$ victims use M$ products as adverstized
12:20 Techrights-sec; and still get harmed, M$ is technically liable, even if the laws have not
12:20 Techrights-sec; yet been enforced that way.
12:20 Techrights-sec; See https://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELEX:52018SC0157&from=EN
12:22 schestowitz; sh: 1: uploadvideo: not found
12:22 schestowitz; I think a variable scope issue
12:22 schestowitz; when called from system()
12:22 schestowitz; what's the simplest fix?
12:24 Techrights-sec; See also: https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:52021PC0206&from=EN
12:24 -TechrightsBN/#boycottnovell-eur-lex.europa.eu | NO TITLE
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12:33 Techrights-sec; sounds like a matter of the right path, try putting
12:33 Techrights-sec; set -xv
12:33 Techrights-sec; before the lines in question and then
12:33 Techrights-sec; set +xv
12:33 Techrights-sec; after them to show what thr sccript is looking for and the evaluate that in
12:33 Techrights-sec; the context of the working directory to see if maybe the script should
12:34 Techrights-sec; use paths diferently (e.g. set $PAtH at the top or else use absolute paths)
12:36 schestowitz-TR; ok, see git
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12:51 Techrights-sec; ack
12:51 Techrights-sec; It's problem of quoting. Rather than fiddling with escaping the double
12:51 Techrights-sec; quotes toedeal with a shell variable inside AWK, it would be easier to pass
12:51 Techrights-sec; the shell variable into AWK using another -v, just a sec.
12:51 Techrights-sec; yes, adding .... ok in git, but untested
12:51 schestowitz-TR; can you push that in?
12:51 schestowitz-TR; next i will do a pluton video
12:55 schestowitz-TR; thanks, will record, then test
12:56 Techrights-sec; ack
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13:23 Techrights-sec; back in a bit
13:56 schestowitz-TR; I got the same error message as before the changes
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14:14 Techrights-sec; back in a bit
14:14 Techrights-sec; Does the script "uploadvideo" exist, if so is it in the $PATH?
14:14 schestowitz-TR; it's inside the sourced file, which contains the function
14:19 Techrights-sec; Ah, the system() function must not have the same material. I'll have to think
14:19 Techrights-sec; a bit about how to get a function into that.
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14:27 Techrights-sec; Ok. AWK's system() uses sh instead of your interactive shell. I see a way
14:27 Techrights-sec; to get it to use a function, but it must call the function file once again.
14:27 Techrights-sec; Working...
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14:37 Techrights-sec; ok a little complicated but try what's in Git
14:37 schestowitz-TR; thanks!
14:40 Techrights-sec; np
14:40 schestowitz-TR; i will do a kristall video to test the changes with
14:42 Techrights-sec; ack
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15:50 schestowitz-TR; the latest version (git, identical) seems to have worked, but it's still in progr
15:50 schestowitz-TR; ess, so no leaping to celebration just yet
15:51 Techrights-sec; ack
15:51 Techrights-sec; if it gets too much more complicated, then perl would be the next step.
15:51 Techrights-sec; Length is not so much a problem as complexity.
15:51 schestowitz-TR; it is harder for me to cope with perl
15:52 Techrights-sec; Ok, so incentive to keep
15:52 Techrights-sec; the scripts simpler :)
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17:19 Techrights-sec; back in a few hours
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21:59 Techrights-sec; back
21:59 Techrights-sec; afk
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