[FFmpeg-user] ffmpeg chromakey with v4l2 loopback device

2019-01-12 Thread Steven Varga
Hello, when running the following ffmpeg chain I can't set the output psudo device (/dev/video1) format. What am I doing wrong? best steven error message: [v4l2 @ 0x55e5418ddee0] Unknown V4L2 pixel format equivalent for yuva420p Could not write header for output file #0 (incorrect codec

Re: [FFmpeg-user] Is there a way to speed up to make partial transcoding of a video file.

2019-01-12 Thread Carl Eugen Hoyos
2019-01-13 0:48 GMT+01:00, shirish शिरीष : >> 2019-01-12 19:29 GMT+01:00, shirish शिरीष : >> >>> I usually find it takes quite some time when trying to partially >>> trancode/copy a file. I am concerned with the startup time. It takes >>> anywhere between 3-5 minutes before transcoding/copying

Re: [FFmpeg-user] Is there a way to speed up to make partial transcoding of a video file.

2019-01-12 Thread shirish शिरीष
addition at bottom :- On 12/01/2019, shirish शिरीष wrote: > At bottom :- > > On 12/01/2019, Kieran O Leary wrote: >> Carl never cc'd you >> >> -- Forwarded message - >> From: Carl Eugen Hoyos >> Date: Sat, 12 Jan 2019, 23:27 >> Subject: Re: [FFmpeg-user] Is there a way to speed

Re: [FFmpeg-user] Is there a way to speed up to make partial transcoding of a video file.

2019-01-12 Thread shirish शिरीष
At bottom :- On 12/01/2019, Kieran O Leary wrote: > Carl never cc'd you > > -- Forwarded message - > From: Carl Eugen Hoyos > Date: Sat, 12 Jan 2019, 23:27 > Subject: Re: [FFmpeg-user] Is there a way to speed up to make partial > transcoding of a video file. > To: FFmpeg user

Re: [FFmpeg-user] Is there a way to speed up to make partial transcoding of a video file.

2019-01-12 Thread Carl Eugen Hoyos
2019-01-12 19:29 GMT+01:00, shirish शिरीष : > I usually find it takes quite some time when trying to partially > trancode/copy a file. I am concerned with the startup time. It takes > anywhere between 3-5 minutes before transcoding/copying starts. Command line and complete, uncut console output

Re: [FFmpeg-user] Meaning of ffprobe output

2019-01-12 Thread Carl Eugen Hoyos
2019-01-12 22:32 GMT+01:00, Ulf Zibis : > Am 11.01.19 um 01:47 schrieb Carl Eugen Hoyos: >> 2019-01-11 0:39 GMT+01:00, Ulf Zibis : >> >>> tbn >> This is the container timebase, 90k for mpeg streams. > > For what stands 90k? For 90,000 milli seconds? It stands for a timebase of 1/9 which is

Re: [FFmpeg-user] Meaning of ffprobe output

2019-01-12 Thread Ulf Zibis
Thanks Carl Eugen ... Am 11.01.19 um 01:47 schrieb Carl Eugen Hoyos: > 2019-01-11 0:39 GMT+01:00, Ulf Zibis : > >> tbn > This is the container timebase, 90k for mpeg streams. For what stands 90k? For 90,000 milli seconds? >> -movflags +faststart -c copy CYD_copy.vob > Sadly, output option

[FFmpeg-user] Is there a way to speed up to make partial transcoding of a video file.

2019-01-12 Thread shirish शिरीष
Dear all, Thank you for making the awesome software ffmpeg. I am not subscribed to the archives so please CC me in case somebody answers it one way or the other. I usually find it takes quite some time when trying to partially trancode/copy a file. I am concerned with the startup time. It

Re: [FFmpeg-user] problems consuming live single file hls

2019-01-12 Thread Carl Eugen Hoyos
2019-01-12 11:44 GMT+01:00, Daniel Oberhoff : >>> Since hls is a streaming format i would actually expect this to work. >> It does work for "multi file" which is what hls is meant to be. > > Byte-range is part of the standard (see >

Re: [FFmpeg-user] problems consuming live single file hls

2019-01-12 Thread Daniel Oberhoff
(sorry, i keep miss-sending this to your personal address) >> Since hls is a streaming format i would actually expect this to work. > It does work for "multi file" which is what hls is meant to be. Byte-range is part of the standard (see