Re: [FFmpeg-user] How does ffmpeg decides how many threads to use for vmaf

On Mon, Oct 21, 2024 at 11:39 PM tarun singhal wrote: > I have specified thread count as 32 > > For 20 min video duration - I was able to get 1x speed > > But for 2.2hr video duration it took 12 hrs, hence lesser speed using same > ffmpeg command and same underlying infrastructure > > > Hence I a

Re: [FFmpeg-user] How to download and transcode video stream to mp4 and save the TS stream to file at the same time?

On Sun, Sep 29, 2024 at 9:19 PM Gyan Doshi wrote: > > > On 2024-09-30 01:29 am, Bo Berglund wrote: > > I have created a script that downloads Internet video streams (basically > news > > programs) and transcodes to mp4 format with a fixed windows size. > > As soon as the video stream recording en

Re: [FFmpeg-user] Piped processes result in glitches/dropouts

On Sat, Sep 28, 2024 at 11:26 AM Anders Bjerkén wrote: > SOLVED! Here's an update from me, that might help someone with a similar > problem in the future: > > My problem turned out to be mainly hardware related. The "ALSA buffer > xrun." messages indeed came every time I experienced a glitch in t

Re: [FFmpeg-user] IDR frames v non-IDR frames

On Fri, Jul 5, 2024 at 4:49 AM Mark Filipak wrote: > > Has anyone figured out how to discern IDR frames v non-IDR frames in either > FFmpeg or FFprobe? > > --Mark. > ___ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > https://ffmpeg.org/mailman/li

Re: [FFmpeg-user] key frame

If you have unlimited funds the I recommend you get Elecard StreamEye for inspecting your ts and elementary streams. On Sat, Jun 29, 2024 at 8:27 AM Richard Bartczak via ffmpeg-user < ffmpeg-user@ffmpeg.org> wrote: > Mark an american, stupi.., like possible. > > Where a medicine, no. > > Gloste

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

On Mon, Apr 1, 2024 at 11:15 AM Aditya Dandavate wrote: > > okay. > > thank you sir. > > But, I had one more problem coming frequently while encoding in two-pass. > The problem says `File Ended Prematurely`. > > What could be the reason for this frequent issue ? > > On Mon, 1 Apr, 2024, 11:42 pm L

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

On Mon, Apr 1, 2024 at 3:40 AM Aditya Dandavate wrote: > > and then > > ffmpeg -y -i Capture.mp4 -pix_fmt yuv420p -c:v libx264 -pass 1 -an > -b:v 2600k -f mp4 NUL > > ffmpeg -y -i Capture.mp4 -pix_fmt yuv420p -c:v libx264 -pass 2 -an > -b:v 2600k myVideo.mp4 > > > Source : > > > https://video.st

Re: [FFmpeg-user] Calculating VMAF of two mkv format videos.

For future reference include the full unedited output when asking for help. On Thu, Dec 21, 2023 at 9:05 AM Aditya Dandavate < adityadandavat...@gmail.com> wrote: > Its working fine now. > > I saw I missed '-' after null so it was giving me an error. > > Thank you anyways. 🙏 > > > > _

Re: [FFmpeg-user] Calculating VMAF of single videos.

On Mon, Dec 18, 2023 at 1:56 AM Nicolas Gaullier wrote: > > >oops sorry: > > > >dsda-doom.exe -timedemo nameofdemo -viddump video.mp4 > > > >this was the command sorry for the mistake. > > It seems you don't read my answer : you won't get any support here. > Also top posting has to be avoided here

Re: [FFmpeg-user] Seeking Efficient Video Redaction Using FFMPEG with Limited Memory Usage

On Mon, Nov 6, 2023 at 9:13 AM sreekar manchukonda wrote: > > Hello, > > I'm seeking help on how to utilize ffmpeg to apply an extensive number of > filters—specifically over 2000, each filter including a crop, boxblur, and > overlay—to a video over an hour long. The intention is to redact certain