BtbN changed the topic of #ffmpeg to: Welcome to the FFmpeg USER support channel | Development channel: #ffmpeg-devel | Bug reports: https://ffmpeg.org/bugreports.html | Wiki: https://trac.ffmpeg.org/ | This channel is publically logged | FFmpeg 7.0 is released
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<mitsudori>
Hello.
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<johnjaye>
is there a way to use different flite voices?
<johnjaye>
the festival webpage has at least a dozen
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<MisterMinister>
Greetings and Salutations! Would there be a method to apply smooth animated scaling of overlay video, triggered by ZMQ for a live feed please? Something similar to this, but for a live stream: `./ffmpeg -i bkg.mov -i top.mov -filter_complex "[0:v]scale=1280:720,setpts=PTS-STARTPTS[bkg];[1:v]setpts=PTS-STARTPTS+2/TB,scale=-1:'320+400*abs(sin((t-2)*2*PI/8))':eval=frame[top];[bkg][top]overlay"
<MisterMinister>
out.mp4`
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<BtbN>
Are you sure you aren't looking for OBS instead?
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<jeromey>
hello all .... got pat the `ffnvcodec not found` issue (thanks JEEB)... i encountered a new one `ERROR: amf requested but not found` when i added `--enable-amf`.... help
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<jeromey>
i didnt know that i got disconnected... please resend if anyone replied to my question
<hjckr>
there has been no response, so nothing you've missed
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<ePirat>
BtbN, you would be surprised what ffmpeg filter incantations are out there
<BtbN>
Just because you CAN doesn't mean you neccesarily want to :D
<ePirat>
MisterMinister, I am not sure thats possible right now as you would need the pts of when your overlay was triggered
<ePirat>
maybe try capture the pts in a variable if its not set and use that but I am not sure if that gets eval'd even when the overlay is not enabled yet
<ePirat>
also getting things perfectly smooth with most ffmpeg CPU-based filters is a bit of a challenge as they only operate on whole pixels or multiples of them even
<ePirat>
so in some cases to get something somewhat acceptable involves scaling the input up, applying the filters and then scaling it down
<ePirat>
which of course has quite the performance impact
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<johnjaye>
to be clear, if I use -map that disables all the default rules for ffmpeg?
<johnjaye>
meaning. if i do -map 1:a say then i'll get no video unless I map that also?
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<furq>
right
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<MisterMinister>
ePirat: thnaks! I'll see if I can push PTS via zmq.
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<ePirat>
I dont think so
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<ePirat>
variables are per-expression not per filtergraph
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<jeromey>
hello
<jeromey>
how do i fix the error `ERROR: amf requested but not found`? i ran `amdgpu-install -y --accept-eula` to install the `amd` drivers but it does not seem to fix it