Converting multiple BMPs to an AVI without compression

[wujj123456]

Hello everyone,

I am trying to convert hundreds of BMPs into a single AVI file, without compression. Since every pixel matters in my case, I don't want any kind of compression. It's fine if the output file is extremely large.

I'd like to know if it's possible to achieve this with packages coming with Ubuntu 11.04. I have tried ffmpeg/mencoder, but they either compressed the output file, or the output file is not playable in totem. I am a new user for both tools. Please correct me if there is actually a way to get uncompressed avi from these tools.

"BMP to AVI Sequencer" (http://sourceforge.net/projects/bmpseq/) does the job perfectly. I successfully converted 180 1080P BMPs into a 1G avi, running at 30 fps. Unfortunately I need a command line tool this time.

Thanks.

[FakeOutdoorsman]

You can use the huffyuv encoder to create a lossless output:

ffmpeg -i img%d.jpg -vcodec huffyuv output.avi
or rawvideo:

ffmpeg -i img%d.jpg -vcodec rawvideo output.avi
By default this will assume your input frame rate is 25, so you can add an option to change it:

ffmpeg -r 30 -i img%d.jpg -vcodec huffyuv output.avi
By default the output will inherit the input frame rate. You can apply the same option to the output. By changing the frame rates you can achieve a certain duration. For example, if I have 900 images and want the output duration to be 60 seconds with an output frame rate of 30, then 900/60=15.

ffmpeg -r 15 -i img%d.jpg -r 30 -vcodec huffyuv output.avi
Note that your images must be named in a sequence starting with 1, and although some encoders are lossless there can be some loss due to colorspace conversion. See FFmpeg FAQ: How do I encode single pictures into movies? (http://ffmpeg.org/faq.html#SEC14) for more info.

[wujj123456]

Thank you very much! You saved my day.

Your commands worked perfectly. With huffyuv, the file size is reduced by 80% with perfect quality.