How to change the inherent aspect ratio of a video?
by grumpyskeptic from LinuxQuestions.org on (#598QA)
I would like to change the aspect ratio of a video file so that I can play it on my tv without it being distorted.
I have already succeeded in changing the DAR aspect ratio using ffmpeg, but the tv ignores this and plays it distorted. So I need to change the pixels themselves - SAR I think it is called. The tv does not have any user controls to change the aspect ratio of the image displayed.
I have tried doing this with ffmpeg but just get messages saying that the commands are wrong.
The file itself is an old black and white movie, currently 1280x720 pixels, which is too wide. I want to convert it to a 4:3 aspect ratio. The size is about 750MB. The codec is H.264/AVC. The container is "ISO MP4/M4A".
The version of ffmpeg I have is 2.8.11. I also have mkvmergeGUI installed. MP4box could be installed if necessary.
I tried an online converter but nothing happened.
Using Linux Mint 17.3 Rosa Cinnamon.
If anyone can suggest a method, I would be interested to know if the conversion process takes seconds, minutes, or several hours.
Thanks
I have already succeeded in changing the DAR aspect ratio using ffmpeg, but the tv ignores this and plays it distorted. So I need to change the pixels themselves - SAR I think it is called. The tv does not have any user controls to change the aspect ratio of the image displayed.
I have tried doing this with ffmpeg but just get messages saying that the commands are wrong.
The file itself is an old black and white movie, currently 1280x720 pixels, which is too wide. I want to convert it to a 4:3 aspect ratio. The size is about 750MB. The codec is H.264/AVC. The container is "ISO MP4/M4A".
The version of ffmpeg I have is 2.8.11. I also have mkvmergeGUI installed. MP4box could be installed if necessary.
I tried an online converter but nothing happened.
Using Linux Mint 17.3 Rosa Cinnamon.
If anyone can suggest a method, I would be interested to know if the conversion process takes seconds, minutes, or several hours.
Thanks