#Ffmpeg mov to avi uncompressed mp4#

(I think) I also tested with my hardware scaler: $ ffmpeg -i out.m2v -f xv -vf crop=100:100:0:0,scale=1000:1000,format=yuyv422 -ДЄnd the output looks essentially gray here. $ ffmpeg -i out.m2v -sws_flags lanczos+accurate_rnd+full_chroma_int+full_chroma_inp -vf crop=100:100:0:0,scale=1000:1000 -qscale 2 -vframes 1 out2.jpgДЄnd I have difficulties seeing systematic artefacts visible in out.jpg and even less in out2.jpg indicating you are reporting a scaler issue in your decoding application. Here is an example of the ffmpeg command I use:ДЇfmpeg -i HD_uncompressed422_10bit.mov -vcodec mpeg2video -aspect -an OUTPUT.m2vД®xample Picture. So it seems that there is a bug in ffmpeg. One theory is that FFmpeg uses an intermediate pix format that differs from the source when interpolating the pixels.ДЇrom other encoding softwareвЂ™s if I mimic the settings, all the encodings looks nice in all cases. On SD encodings вЂќ-dc9вЂќ will give you bad compression and color artifacts that look very systematic. But gradients and shading will suffer and be rougher. On SD encodings вЂќ-dc8вЂќ will give you nice clean solid colors without artifacts. On HD encodings вЂќ-dc11вЂќ will give you bad compression and color artifacts that look very systematic as you can see in the picture in the link.

On HD encodings вЂќ-dc8вЂќ will give you nice clean solid colors without artifacts. I have tried different combinations and these are my results. From what I can see, the problem lies in the 'dc precision' command '-dc'. It also exploits temporal and spatial redundancy common in video to achieve better data compression than would be possible otherwise.When encoding from a 10 bit source file or Prores 422 or 4444, compression / color artefacts appear. It reduces or completely discards information in certain frequencies and areas of the picture that the human eye has limited ability to perceive fully. MPEG-1 Video exploits perceptual compression methods to reduce the data rate required by a video stream significantly. In addition, each track contains a digitally-encoded media stream (using a specific format) or a data reference to the media stream located in another file. The format specifies a multimedia container file that contains one or more tracks, each of which stores a particular type of data: audio, video, or text (e.g., for subtitles). It is designed to compress VHS-quality raw digital video and CD audio down to 1.5 Mbit/s (26:1 and 6:1 compression ratios respectively) without excessive quality loss, making video CDs, digital cable/satellite TV, and digital audio broadcasting (DAB) possible.

MPEG-1 is a standard for lossy compression of video and audio.

#Ffmpeg mov to avi uncompressed mp4#

Because both the QuickTime and MP4 container formats can use the same MPEG-4 formats, they are mostly interchangeable in a QuickTime-only environment.

The International Organization for Standardization approved the QuickTime file format as the basis of the MPEG-4 file format. QuickTime File Format (QTFF) is a computer file format used natively by the QuickTime framework. MPEG - Motion Picture Experts Group file interchange format (version 1)