[FFmpeg-user] The efficacy of speed up a .ts file

Hi ffmpeg members, Recently, I have a job to make a speed up mp4 file, and I'm lack of video knowledge, so I suffer some issue, below is the command I used: [1] trim ts file ffmpeg -ss 2 -i input.ts -t 5 -vcodec copy -acodec copy output.ts [2] merge ts file ffmpeg -i

Re: [FFmpeg-user] Feeding FFMPEG from buffer in c code RAW H264 to MP4 wrapping, or named fifo?

-report is very cool, sorry for wasting your attention, and mine, with terrible logs. i have piped the raw h264 to a file and this command converts is successfully. ffmpeg -report -re -framerate 30 -y -f h264 -i orbi_0148.cam1.h264 -c:v copy -an -video_size 1920x1080 -f mp4 orbi_0148.cam1-1.mp4

[FFmpeg-user] Video and audio desync when recording screen

Hello I am trying to record my screen on Xubuntu 16.04.2. While I can record both video and audio, on some software the video and audio are out of sync. When watching the video in VLC, the audio and the video are in sync, but when editing with Kdenlive or uploading directly the video to

Re: [FFmpeg-user] differences between -vf and -filter_complex

Le primidi 21 floréal, an CCXXV, Paul B Mahol a écrit : > ffmpeg -f lavfi -i testsrc2=r=1:d=5,format=yuv422p10le -f framemd5 - This is still suboptimal. ffmpeg -lavfi testsrc2=r=1:d=5,format=yuv422p10le -f framemd5 - No need to wrap the frames in packets. Regards, -- Nicolas George

Re: [FFmpeg-user] differences between -vf and -filter_complex

On 5/10/17, Dave Rice wrote: > >> On May 10, 2017, at 2:13 PM, Paul B Mahol wrote: >> >> On 5/10/17, Dave Rice > wrote: >>> Hi ffmpeg-user, >>> >>> In some cases I've been using -vf and -filter_complex

Re: [FFmpeg-user] differences between -vf and -filter_complex

> On May 10, 2017, at 2:13 PM, Paul B Mahol wrote: > > On 5/10/17, Dave Rice > wrote: >> Hi ffmpeg-user, >> >> In some cases I've been using -vf and -filter_complex interchangeability but >> notice that some behavior is unexpectedly

Re: [FFmpeg-user] differences between -vf and -filter_complex

On 5/10/17, Dave Rice wrote: > Hi ffmpeg-user, > > In some cases I've been using -vf and -filter_complex interchangeability but > notice that some behavior is unexpectedly different. > > For instance if I use format=yuv422p10le within -vf and within > -filter_complex the output

[FFmpeg-user] gst-ffmpeg on ARM Linux: GNU assembler not found, install/update gas-preprocessor

I've been trying to compile the latest GStreamer for the Raspberry Pi running Raspbian (Debian). When I try to build gst-ffmpeg, it fails with the message: GNU assembler not found, install/update gas-preprocessor I've downloaded gas-preprocessor.pl file [1] and put it in my $PATH, with the

Re: [FFmpeg-user] differences between -vf and -filter_complex

> On May 10, 2017, at 11:55 AM, Gyan wrote: > > On Wed, May 10, 2017 at 9:08 PM, Gyan wrote: > >> >> >> On Wed, May 10, 2017 at 8:17 PM, Dave Rice wrote: >> >>> >>> For instance if I use format=yuv422p10le within -vf and within

Re: [FFmpeg-user] differences between -vf and -filter_complex

On Wed, May 10, 2017 at 9:08 PM, Gyan wrote: > > > On Wed, May 10, 2017 at 8:17 PM, Dave Rice wrote: > >> >> For instance if I use format=yuv422p10le within -vf and within >> -filter_complex the output is different. Is there something else I should >> add

Re: [FFmpeg-user] differences between -vf and -filter_complex

On Wed, May 10, 2017 at 8:17 PM, Dave Rice wrote: > > For instance if I use format=yuv422p10le within -vf and within > -filter_complex the output is different. Is there something else I should > add to the filterchain to get consistent results. > > Best Regards, > Dave Rice >

[FFmpeg-user] differences between -vf and -filter_complex

Hi ffmpeg-user, In some cases I've been using -vf and -filter_complex interchangeability but notice that some behavior is unexpectedly different. For instance if I use format=yuv422p10le within -vf and within -filter_complex the output is different. Is there something else I should add to the

Re: [FFmpeg-user] No video only audio in the output file

On Tue, May 09, 2017 at 20:59:13 +0530, richard nirmal singh wrote: > Added -pix_fmt yuv420p but it creates video with watermarkimage and audio > but actual video content is not available. > > ffmpeg.exe -y -i MHPDV000195.mpg -i DAL_WaterMark642x342_new.png > -filter_complex "overlay=W-w-0:H-h-0"

Re: [FFmpeg-user] Feeding FFMPEG from buffer in c code RAW H264 to MP4 wrapping, or named fifo?

On Tue, May 09, 2017 at 22:23:29 +, abraxas1 wrote: > ok, i removed the opening and the closing of the files that ffmpeg is > opening in it's own process. (they were legacy...) They were wrong. ffmpeg does that just fine. ;-) > now it seems to proceed through the recording nicely, with no

Re: [FFmpeg-user] Feeding FFMPEG from buffer in c code RAW H264 to MP4 wrapping, or named fifo?

2017-05-09 20:08 GMT+02:00 abraxas1 : > yes, thanks carl, i went on to do just that. > first i fed the buffer output to the fifo and piped that to a file. The ffmpeg command line tool should be able to read from the fifo to allow you testing without the call to exec(). >

Re: [FFmpeg-user] ffmpeg: gif to video conversion does not keep gif time delay between frames.

2017-05-07 18:16 GMT+02:00 Email Me : > ffmpeg -f gif -i test.gif -pix_fmt yuv420p -c:v libx264 -f mp4 out1.mp4 > ffmpeg -f gif -i test.gif -f mp4 out2.mp4 Complete, uncut console output missing. > The input gif has variable frame delays: > > Frame 1 - no delay >

Re: [FFmpeg-user] ffmpeg: gif to video conversion does not keep gif time delay between frames.

2017-05-07 18:16 GMT+02:00 Email Me : > ffmpeg -f gif -i test.gif -f mp4 out2.mp4 ​It's hard to tell without seeing the full output from ffmpeg, but there's a distinct possibility you need to specify a framerate for the output using -r.