> > I build ffmpeg with x265 and svt-hevc. I can do transcoding via
> > ffmpeg command. But how to use svt-hevc in x265 via ffmpeg
> > command?
>
> I don't understand what you mean by "use svt-hevc in x265". svt-hevc
> is an HEVC/H.265 encoder. (lib)x265 is an HEVC/H.265 encoder. You
> would use
> The thing I am trying to achieve is a compromise between these two
> extremes, eg. a method which gives less cropping at the LH & RH
> picture edges for the price of a little padding above and below the
> picture. I'm presuming this (ideally) involves scaling, padding and
> cropping together in
> I am making animations in html5 canvas. I am able to get frames from
> canvas using requestAnimationFrame() and convert them to png dataurl.
> I want to send these frames to an ffmpeg running on localhost for
> live encoding (I want to send the encoded video to rtmp server
> afterward).
>
> Does
> Hi,
>
> I'm new to this list.
>
> I'm seeking for a tool to remove the start and end sections of a movie
> recorded from TV, plus sections on the middle (commercials), in
> Linux. I have tried several GUI tools and they are either too complex
> or lack some crucial feature (like handling two la
> > The '+' sign in front of the flags is not going to work? I disagree.
> > ffmpeg's command line parser doesn't care whether the first flag is
> > prepended with a '+' or not:
>
> Actually, I found this comment
> (http://stackoverflow.com/questions/23419351/ffmpeg-using-movflags-faststart#comm
> when using -vf "deshake" a black frame is coming separating the
> original frame from the "interpolated" pixels along the boders.
> More like a line than a frame actually !
> Is there a way I can turn off these black lines ?
As far as i know you have to "zoom in" to get rid of the artifacts at
t
> The error message says...
>
> /home/user/build/lib/libmp3lame.a(takehiro.o):(.rodata+0x0): multiple
> definition of
> `slen2_tab' /home/user/build/lib/libshine.a(tables.o):(.rodata+0xc80):
> first defined
> here /home/user/build/lib/libmp3lame.a(takehiro.o):(.rodata+0x40):
> multiple definition
> > What processing do you want to do with ffmpeg?
>
> At a minimum I foresee concatenating input files with it. My current
> project has 350+ video files. Avisynth cannot work with more than 25
> - 35 without crashing. I have not found an Avisynth mechanism for
> concatenating files that preserve
> I hope to reach an expert familiar with both ffmpeg and Avisynth! Im
> looking to perform some processing in ffmpeg, and then to continue in
> Avisynth. For a number of reasons, including disk space, Id like to
> avoid intermediate files. Which, if any, of the ffmpeg server
> protocols are comp
> > > Does seeking in the original file works with ffplay?
>
> > I cannot answer your question because I do
> > not know how to try "seeking" from a console.
>
> (I don't understand what you are saying here.)
>
> Did you try playing your input file with ffplay?
> Does it play? Did you try to se
> >> I use the below command to place one image on one video:ffmpeg
> >> -i ./file1.mp4 -i ./file2.jpg -filter_complex overlay ./file3.mp4
> >>
> >> But there is no transparent effect in resulting file, i.e.
> >> file3.mp4. What is the command to use alpha channel to make
> >> transparent effect?
>
> I use the below command to place one image on one video:ffmpeg
> -i ./file1.mp4 -i ./file2.jpg -filter_complex overlay ./file3.mp4
>
> But there is no transparent effect in resulting file, i.e. file3.mp4.
> What is the command to use alpha channel to make transparent effect?
Have a look at the
Hi,
> I used the command of 'ffmpeg -i ./file1.mp4 ./file2.mp4' to
> trancode. But I found moov box is behind mdat box in file2.mp4.
>
>
> How to how to make moov box before mdat box in mp4 file?
See format documentation:
https://ffmpeg.org/ffmpeg-formats.html#mov_002c-mp4_002c-ismv
Either run
> I am stil looking around for other solutions, but the idea is to
> combine 30 images of 500x500 to a combined total image of 2500x3000
> pixels. The reason I would like to use ffmpeg for is the batchfile
> automation. The smaller images change content so the new total map
> needs to be updated wh
> How to scale watermark proportionally video frame size (to width and
> to height of video frame)?
>
> Now I use the following command:
>
> ffmpeg -i input.mkv -i logo.png -filter_complex
> "[1:v]scale=w=iw/3:h=ih/3[watermark_scaled];[0:v][watermark_scaled]overlay=x=main_w-overlay_w-main_w/20:y=
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