Re: [FFmpeg-user] Question about 2 pass encoding

2024-04-01 Thread Laine Lee
> On Apr 1, 2024, at 9:35 AM, Aditya Dandavate > wrote: > > But according to H.264 guide : > > Warning: When using option -an, you may eventually get a segfault or a > broken file. If so, remove option -an and replace by -vsync cfr to the > first pass. > > When I put `vsync cfr` then it

Re: [FFmpeg-user] Question about 2 pass encoding

2024-04-01 Thread Laine Lee
> On Apr 1, 2024, at 5:40 AM, Aditya Dandavate > wrote: > > > So, I had a question : > > > Can I use `-c:a` copy for audio codec instead of `-an` Keeping “-an” for first pass, then using “-c:a copy” for second pass makes sense to me, or am I completely wrong? Yours ‘til I never am, L.

Re: [FFmpeg-user] Possible to speed up/down video while keeping audio pitch?

2024-03-24 Thread Laine Lee
> On Mar 24, 2024, at 5:31 PM, Bo Berglund wrote: > > I know how to use ffmpeg to adjust the video/audio sync and that is a real > simple command not requiring any remuxing or such. This is what I use in my > audiosync script and it runs very fast: > > ffmpeg -i $SOURCEFILE -itsoffset $DELAY

Re: [FFmpeg-user] Trying to remember how I did this.....

2023-10-04 Thread Laine Lee
On Oct 4, 2023, at 10:59 AM, Mark Dm wrote: > > Thanks Laine and Andrew . I do believe that yadif=1 is what I am looking > for. After googling it I see so many others that express their love for it > so that sounds right! > > Thanks > Yadif = Yet Another DeInterlacing Filter. :) L. Lee

Re: [FFmpeg-user] How to convert video.ts to video.mp4 efficiently?

2021-04-14 Thread Laine Lee
> On Apr 14, 2021, at 8:16 AM, Bo Berglund wrote: > > On Tue, 13 Apr 2021 12:27:34 -0500, Laine Lee wrote: > >> Could you provide an example .ts video? > > These 20 per day videos are each 1.3 GB for a 1 hour show... > Hard to provide to a mail list. > >

Re: [FFmpeg-user] How to convert video.ts to video.mp4 efficiently?

2021-04-13 Thread Laine Lee
, but what? How do I specify an output format? I did not do that in the original command where the size was also changed and it still made the mp4 format... Maybe you would benefit from using “h264_videotoolbox” rather than “libx264”. Could you provide an example .ts video?

Re: [FFmpeg-user] Using Homebrew to install FFmpeg, But having wired problems.

2021-04-05 Thread Laine Lee
On 4/4/21, 9:39 PM, "ffmpeg-user on behalf of Kosei Seki" wrote: (base) XXX-MacBook-Air ~ % brew install ffmpeg --HEAD Updating Homebrew... ==> Installing ffmpeg from homebrew-ffmpeg/ffmpeg ==> Searching for similarly named formulae... Error: No similarly named formulae found. Error: No

Re: [FFmpeg-user] Cropdetect in ffmpeg version 4.1.4_1

2019-07-25 Thread Laine Lee
On 7/25/19, 10:23 PM, "ffmpeg-user on behalf of Ted Park" wrote: Seems to work fine, you could try removing the piped commands from the end to see where it goes wrong (try getting rid of tail, then awk, and the output redirection, and so on.) Thanks. I’m not having any trouble with it

[FFmpeg-user] Cropdetect in ffmpeg version 4.1.4_1

2019-07-25 Thread Laine Lee
Is there a change to cropdetect in ffmpeg v.4.1.4_1? I've been using “ffmpeg -i input -t 1 -vf cropdetect -f null - 2>&1 | awk '/crop/ { print $NF }' | tail -1” for a long time, and now it appears to yield no output. Thanks. llee782 ___

Re: [FFmpeg-user] Pullup old MPEG-2

2015-12-20 Thread Laine Lee
On 12/20/15, 5:01 PM, "ffmpeg-user on behalf of Carl Eugen Hoyos" <ffmpeg-user-boun...@ffmpeg.org on behalf of ceho...@ag.or.at> wrote: >Laine Lee sbcglobal.net> writes: > >> >> BTW, -vf pullup -r 24000/1001, doesn’t work >> >> on the clip &

Re: [FFmpeg-user] Pullup old MPEG-2

2015-12-19 Thread Laine Lee
BTW, -vf pullup -r 24000/1001, doesn’t work on the clip (https://dl.dropboxusercontent.com/u/42718751/2024_telecine_source.zip), either, when I used "ffmpeg -i 2024_telecine_source.mpg -vf pullup -r 24000/1001 2024_ffmpeg_detelecine.m4v.” Laine Lee On 12/18/15, 7:05 PM, "f

Re: [FFmpeg-user] apple-friendly timestamps with -c copy

2015-12-19 Thread Laine Lee
ble from MacUpdate. When I saw a similar issue in Mencoder output, I discovered that "-lavfopts format=mp4” appeared to solve it, but even with an ffmpeg equivalent, it would mean re-encoding, of course. Laine Lee ___ ffmpeg-user mailing list ffm

[FFmpeg-user] Pullup old MPEG-2

2015-12-18 Thread Laine Lee
in=8:qpmax=28:qpstep=4 '2023ffmpeg_telecine..m4v’”: https://dl.dropboxusercontent.com/u/42718751/2023_ffmpeg_detelecine.m4v.zip Please tell me how ffmpeg may be used to correctly detelecine the source so that the output compares favorably with the mencoder output

Re: [FFmpeg-user] Pullup old MPEG-2

2015-12-18 Thread Laine Lee
Thanks. On 12/18/15, 7:05 PM, "ffmpeg-user on behalf of Carl Eugen Hoyos" <ffmpeg-user-boun...@ffmpeg.org on behalf of ceho...@ag.or.at> wrote: Laine Lee sbcglobal.net> writes: -vf "fieldmatch=order=tff:combmatch=full,fps=24000/1001" Where did you find this?