Re: [FFmpeg-user] How to filter time dependent
Am 24.04.2021 um 19:24 schrieb Michael Koch: Am 23.04.2021 um 23:19 schrieb Ulf Zibis: Am 23.04.21 um 08:31 schrieb Gyan Doshi: On this topic generally, see https://superuser.com/q/1632998/ Much thanks for this hint. I was successful with this approach: ffmpeg -i 'Stille Tage in Clichy.mpg' -vf "split=3[a][b][c];[a]trim=0:2888.36,setpts=PTS-STARTPTS,crop=352:496:0:36[a];[b]trim=2888.36:3293.96,setpts=PTS-STARTPTS,crop=352:496:0:42[b];[c]trim=3293.96,setpts=PTS-STARTPTS,crop=352:496:0:38[c];[a][b][c]concat=n=3:v=1:a=0",scale=iw:ih/2,hqdn3d=2:1.5:12 -preset slow -movflags +faststart 'Stille Tage in Clichy_c_3_scale_1_2_hqdn3d_2_1_12_slow.mp4' You can simplify this by using sendcmd: ffmpeg -i input.mp4 -vf "sendcmd=f=test.cmd,crop@1=352:496:0:36,scale=iw:ih/2,hqdn3d=2:1.5:12 out.mp4 I forgot the quotation mark " at the end of the filter chain: ffmpeg -i input.mp4 -vf "sendcmd=f=test.cmd,crop@1=352:496:0:36,scale=iw:ih/2,hqdn3d=2:1.5:12" out.mp4 "@1" can be omitted if there is only one crop filter in the filter chain. Michael ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] How to filter time dependent
Am 23.04.2021 um 23:19 schrieb Ulf Zibis: Am 23.04.21 um 08:31 schrieb Gyan Doshi: On this topic generally, see https://superuser.com/q/1632998/ Much thanks for this hint. I was successful with this approach: ffmpeg -i 'Stille Tage in Clichy.mpg' -vf "split=3[a][b][c];[a]trim=0:2888.36,setpts=PTS-STARTPTS,crop=352:496:0:36[a];[b]trim=2888.36:3293.96,setpts=PTS-STARTPTS,crop=352:496:0:42[b];[c]trim=3293.96,setpts=PTS-STARTPTS,crop=352:496:0:38[c];[a][b][c]concat=n=3:v=1:a=0",scale=iw:ih/2,hqdn3d=2:1.5:12 -preset slow -movflags +faststart 'Stille Tage in Clichy_c_3_scale_1_2_hqdn3d_2_1_12_slow.mp4' You can simplify this by using sendcmd: ffmpeg -i input.mp4 -vf "sendcmd=f=test.cmd,crop@1=352:496:0:36,scale=iw:ih/2,hqdn3d=2:1.5:12 out.mp4 The file "test.cmd" contains these two lines: 2888.36 crop@1 y 42; 3293.96 crop@1 y 38; The above example is untested. There is a similar example at the end of chapter 2.86 in my book: http://www.astro-electronic.de/FFmpeg_Book.pdf Michael ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] drawtext timecode from metadata
Hmm,
I’m pretty sure I saw a reply from Gyan, stating ’not possible, how are you
capturing, i’ll look into something’
few seconds later that was gone. (Or I really need to up my medicine…)
Anyways, I’m dong a BM capture, with TC coming in embedded over SDI.
(I must admit I have not yet tested it with BM capture, just with a local file.
The TC as metadata in a Qt atom works just fine.
Bouke
> On 24 Apr 2021, at 13:26, Bouke wrote:
>
> trying to capture and burn in TC at the same time.
> Burn in TC works if I specify the start TC, but I can’t probe and then
> record, as that takes time so the TC will be off.
> So I’m hoping to set the drawtext filter on the fly, I tried:
> drawtext=timecode=%{metadata\\\:timecode}:
>
> -filter_complex
> "[0:0]drawtext=timecode=%{metadata\\\:timecode}:fontfile='/Volumes/Data/fonts/courbd.ttf':r=25:x=(w-tw)
> - (w * 0.02): y=h-(2*lh):fontsize=54.0:fontcolor=white”
>
> This does not work, gives me:
> [Parsed_drawtext_0 @ 0x7ff9fbe0cb40] Unable to parse timecode, syntax:
> hh:mm:ss[:;.]ff
>
> Is there a way to do this?
>
> thx,
> Bouke
>
>
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Re: [FFmpeg-user] drawtext timecode from metadata
On 2021-04-24 16:56, Bouke wrote:
trying to capture and burn in TC at the same time.
Burn in TC works if I specify the start TC, but I can’t probe and then record,
as that takes time so the TC will be off.
So I’m hoping to set the drawtext filter on the fly, I tried:
drawtext=timecode=%{metadata\\\:timecode}:
-filter_complex
"[0:0]drawtext=timecode=%{metadata\\\:timecode}:fontfile='/Volumes/Data/fonts/courbd.ttf':r=25:x=(w-tw)
- (w * 0.02): y=h-(2*lh):fontsize=54.0:fontcolor=white”
This does not work, gives me:
[Parsed_drawtext_0 @ 0x7ff9fbe0cb40] Unable to parse timecode, syntax:
hh:mm:ss[:;.]ff
Is there a way to do this?
Not possible. Let me see if it's possible to get it from frame metadata.
How are you capturing?
Gyan
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[FFmpeg-user] drawtext timecode from metadata
trying to capture and burn in TC at the same time.
Burn in TC works if I specify the start TC, but I can’t probe and then record,
as that takes time so the TC will be off.
So I’m hoping to set the drawtext filter on the fly, I tried:
drawtext=timecode=%{metadata\\\:timecode}:
-filter_complex
"[0:0]drawtext=timecode=%{metadata\\\:timecode}:fontfile='/Volumes/Data/fonts/courbd.ttf':r=25:x=(w-tw)
- (w * 0.02): y=h-(2*lh):fontsize=54.0:fontcolor=white”
This does not work, gives me:
[Parsed_drawtext_0 @ 0x7ff9fbe0cb40] Unable to parse timecode, syntax:
hh:mm:ss[:;.]ff
Is there a way to do this?
thx,
Bouke
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Re: [FFmpeg-user] Odd video output, playing RTSP on RPI
On Fri, 23 Apr 2021 10:01:21 -0400, schrotty wrote: >my RPI is running a headless raspian installation. ... >i see the RTSP stream in the lower left corner of the screen at a very >low frame rate (1 frame /10s) and then i also see a mouse pointer above >the RTSP stream area. If the RPi computer is headless how can you view the output? -- Bo Berglund Developer in Sweden ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] Can ffmpeg be set to wait if a stream stop happens?
On Thu, 22 Apr 2021 14:22:17 +0200, Moritz Barsnick wrote: >Hej Bo, > >On Wed, Apr 21, 2021 at 16:59:10 +0200, Bo Berglund wrote: >> But what I have noticed lately is that sometimes the stream it downloads from >> stops feeding data for a few seconds (don't know for how long) and it seems >> like >> ffmpeg at that times finishes up the output file and exits. > >ffmpeg shouldn't interrupt if the input stream just "stalls". It will >interrupt if the stream server actually closes the connection. With >HLS, where the URLs to open continuously change, ffmpeg will retry a >certain number of times (IIRC) before giving up. > >> Is there a way to tell ffmpeg to stay online for that full amount even if the >> stream pauses for some reason? > >I suspect it isn't "pausing". It would be practical to see a complete >log output, of course. (You can generate them by using the "-report" >option, but they may become large, unless you reduce the default report >log level.) > I don't really know what happens but the hourly downloads are supposed to end at about 4 min after the hour (using the -t argumant to ffmpeg) and the problem videos end anywhere inside the hour. It can happen after 5 min or 55 min into the recording... The shortened videos are playable but suddenly end without warning. I extended my download script so it will check after ffmpeg exits if the set time has been reached or if it is more than 2 min short. If it is short it modifies the output file name by adding extension .x.mp4 instead of .mp4, then it waits for 60 s and re-launches the ffmpeg command. I log it too so I can see that it has triggered but no video file appears from this call so I assume that the problem persists for longer than the minute I wait... In my log I see that the extra ffmpeg call has been executed 5 times since April 22, when I modified the script. But no "rescue" video appeared so I guess at these times the outage was longer than 60 seconds. When the next recording started the following hour it usually worked. Since I am unable to simulate the problem I think I have just to give up for the moment... -- Bo Berglund Developer in Sweden ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
