Re: [FFmpeg-user] JPGs->video1 ; MOV -> Mp4 video2 ; Concatenate - video2 audio OK but video is slow . .

Carl, There has been some improvement - I will top-post for clarity but the slow motion video has disappeared and the only remaining problem is that the audio and video are out of sync: I stuck with concat because it alllows me to specify image files more conveniently in the

Re: [FFmpeg-user] JPGs->video1 ; MOV -> Mp4 video2 ; Concatenate - video2 audio OK but video is slow . .

Carl, Thanks for responding! - see inline comments: On 2019-03-27 07:22, Carl Eugen Hoyos wrote: 2019-03-26 21:15 GMT+01:00, Philip Rhoades : I converted 21 JPGs to a video with: Usually, converting jpgs with the image2 input works better than concat. Right - I will try that.

Re: [FFmpeg-user] Encode in "intra-only"

On Tue, Mar 26, 2019 at 21:41:38 +0100, Mohammed Bey Ahmed Khernache wrote: > Can we check with *ffprobe/ffmpeg* whether a video sequence is encoded in > intra-only? > > I didn't succeed to get such information using those tools. You can show each frame's properties with "ffprobe -show_frames",

Re: [FFmpeg-user] Encode in "intra-only"

Thank you for your reply. Can we check with *ffprobe/ffmpeg* whether a video sequence is encoded in intra-only? I didn't succeed to get such information using those tools. ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org

Re: [FFmpeg-user] JPGs->video1 ; MOV -> Mp4 video2 ; Concatenate - video2 audio OK but video is slow . .

2019-03-26 21:15 GMT+01:00, Philip Rhoades : > I converted 21 JPGs to a video with: Usually, converting jpgs with the image2 input works better than concat. >ffmpeg -f concat -i concat_demuxer1.txt -vf scale=1024:576 -r 29.97 This framerate is never correct, a possible frame rate is

[FFmpeg-user] JPGs->video1 ; MOV -> Mp4 video2 ; Concatenate - video2 audio OK but video is slow . .

People, I converted 21 JPGs to a video with: ffmpeg -f concat -i concat_demuxer1.txt -vf scale=1024:576 -r 29.97 output1.mp4 I then added a silent audio track with: ffmpeg -ar 44100 -acodec pcm_s16le -f s16le -ac 2 -channel_layout 2.1 -i /dev/zero \ -i output${i}.mp4 \ -vcodec

Re: [FFmpeg-user] Encode in "intra-only"

2019-03-26 19:44 GMT+01:00, Mohammed Bey Ahmed Khernache : > how to encode a video sequence into hevc with "intra-only" mode using ffmpg? > I tried the following command but it seems not working: > ffmpeg.exe -f rawvideo -vcodec rawvideo -s 1920x1080 -r 25 -pix_fmt yuv420p > -frame_type if -i

[FFmpeg-user] Encode in "intra-only"

Hello, how to encode a video sequence into hevc with "intra-only" mode using ffmpg? I tried the following command but it seems not working: ffmpeg.exe -f rawvideo -vcodec rawvideo -s 1920x1080 -r 25 -pix_fmt yuv420p -frame_type if -i pedestrian_area_375.yuv -c:v libx265 -x265-params

Re: [FFmpeg-user] where to find paper about swri_resampler

2019-03-26 9:53 GMT+01:00, qw : > I want to know deeply about swri_resampler, and where to find its paper? I am not convinced there is a specific paper about libswresample but I suspect the principles are similar for every resampling library (there are a few). Carl Eugen

[FFmpeg-user] where to find paper about swri_resampler

Hi, I want to know deeply about swri_resampler, and where to find its paper? Thanks! Regards Andrew ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email