Search found 332 matches

by llogan
Fri May 20, 2016 5:41 pm
Forum: FFmpeg Examples
Topic: Convert TV series for mp4 and embed legend
Replies: 1
Views: 1977

Re: Convert TV series for mp4 and embed legend

What kind of legend? Image overlay, text, subtitles?

Please show info about the avi.

Code: Select all

ffmpeg -i input.avi
by llogan
Fri May 20, 2016 5:38 pm
Forum: Usage
Topic: How to save series of JPEG frames from 4K video
Replies: 2
Views: 1689

Re: How to save series of JPEG frames from 4K video

Please show the complete console output from your command (and use the code button to format it).
by llogan
Thu May 05, 2016 5:47 pm
Forum: FFmpeg Examples
Topic: How can I get better quality video output
Replies: 9
Views: 5708

Re: How can I get better quality video output

Which Windows version(s)?
by llogan
Wed May 04, 2016 9:48 pm
Forum: FFmpeg Examples
Topic: How can I get better quality video output
Replies: 9
Views: 5708

Re: How can I get better quality video output

fester13579 wrote:The only requirement I have is that it be playable via windows media player without the need of the user to install any other codex.
Which Windows version(s)?

Code: Select all

ffmpeg version N-62699-gc7b0890 Copyright (c) 2000-2014 the FFmpeg developers
This is old. Please update before doing anything else.
by llogan
Tue May 03, 2016 9:26 pm
Forum: Usage
Topic: ffmpeg: avi convert to flv - trouble with quality of output flv
Replies: 1
Views: 1137

Re: ffmpeg: avi convert to flv - trouble with quality of output flv

Code: Select all

ffmpeg version N-32754-g936d4d4-Sherpya, Copyright (c) 2000-2011 the FFmpeg developers
This is ancient and unsupported. Why are you using such an old ffmpeg?
by llogan
Tue May 03, 2016 9:22 pm
Forum: FFmpeg Examples
Topic: command-line sample for demuxing audio from mpeg2/vob
Replies: 1
Views: 1898

Re: command-line sample for demuxing audio from mpeg2/vob

You need to show the info from the input and let us know which audio stream(s) you want since VOB often contains multiple audio streams (various languages, commentary, etc).

Show the complete output of:

Code: Select all

ffmpeg -i input.vob
And use the code button to format it properly.
by llogan
Tue May 03, 2016 9:20 pm
Forum: FFmpeg Examples
Topic: How can I get better quality video output
Replies: 9
Views: 5708

Re: How can I get better quality video output

Possibly due to chroma subsampling, but it is not possible to tell without the complete console output. Also, probably due to the lack of adding any rate control options for video quality.

Why are you using mpeg1video?
by llogan
Thu Mar 31, 2016 3:05 am
Forum: FFmpeg Examples
Topic: Lossless Frame Grabbing
Replies: 8
Views: 6242

Re: Lossless Frame Grabbing

I'm not a Windows user, but I guess you would use dshow input device . Generic example: ffmpeg -f dshow -i video="Camera" -q:v 2 img_%04d.jpg Resulting in output files named img_0001.jpg, img_0002.jpg, img_0003.jpg, etc. For jpeg, the -q:v controls the quality. Effective range is a linear scale of 2...
by llogan
Thu Mar 17, 2016 6:01 pm
Forum: Other
Topic: Trying to convert mov to exr sequence
Replies: 1
Views: 3994

Re: Trying to convert mov to exr sequence

FFmpeg does not have a EXR encoder. For a list of decoders and encoders:

Code: Select all

ffmpeg -codecs
For a list of encoders:

Code: Select all

ffmpeg -encoders
by llogan
Thu Mar 03, 2016 3:59 am
Forum: Usage
Topic: Calculating b:v in command line?
Replies: 2
Views: 1457

Re: Calculating b:v in command line?

Swidgen wrote:Is it possible to use expressions to calculate the b:v value?
No.
Swidgen wrote:...would like to calculate the bitrate value as trunc(ow*oh*1.8)
Why, and how did you come up with that particular value?
'