[FFmpeg-user] image2 examples missing `-f image2`, can that be right?

Hello, all: I'm reading the documentation for the image2 demuxer[1]. It has three examples, in section 20.9.1 Examples. ffmpeg -framerate 10 -i 'img-%03d.jpeg' out.mkv ffmpeg -framerate 10 -start_number 100 -i 'img-%03d.jpeg' out.mkv ffmpeg -framerate 10 -pattern_type glob -i "*.png" out.mkv

[FFmpeg-user] Combine 2 small GIF images to small animated GIF, fails with "Decoder (codec none) not found for input stream #0:0"

Hello, FFMPEG folks: I have two simple GIF images, and I want to combine them into a 2-frame animated GIF. This is to give me a reduced input file to diagnose another FFMpeg issue. However, when I do the obvious command, I get an error, "Decoder (codec none) not found for input stream #0:0".

Re: [FFmpeg-user] essence MD5 for still images

2018-01-06 20:38 GMT+01:00 *** : > Somewhere I discovered that ffmpeg will create essence > MD5s for supported still image formats. And audio and video. (From FFmpeg's pov, an image format is a video format.) > I began using the following command to verify that > the image essence did not change

[FFmpeg-user] essence MD5 for still images

Hello Somewhere I discovered that ffmpeg will create essence MD5s for supported still image formats. I began using the following command to verify that the image essence did not change in photos after their IPTC metadata is revised. Because there is no documentation of such a use case on the f

[FFmpeg-user] Video scaling, padding and cropping together question

I am attempting to down-convert HD video (1280x720 with 16:9 aspect ratio) to 720x576 for use on an old PAL 4x3 display. I found two days of doing this, using, (1) -filter:v scale=iw*min(720/iw\,576/ih):ih*min(720/iw\,576/ih), pad=720:576:(720-iw*min(720/iw\,576/ih))/2:(576-ih*min(720/iw\,576

Re: [FFmpeg-user] Transport Stream Error Correction & Cleanup possible?

2018-01-06 1:35 GMT+01:00 georg2...@t-online.de : >> I often used ProjectX (even for H264) > > It is said that HDTV-streams are MPEG-4 AVC (aka H264) We have MPEG-2 and HEVC HDTV samples. > which is incompatible with ProjectX (bug still open Not sure if it makes sense to repeat this claim... >

[FFmpeg-user] QSV Decoding and QSV Encoding Live Stream

QSV Decoder in FFMPEG needs video stream to start with an I Frame. Live Streams usually does not get an I Frame at the begging, and FFMPEG using QSV Decoder returns error. I've get to decode and encode a Live Stream using QSV using a workaround (copying the live stream into a pipe, and then trans