Please visit the new Mac-Forums Facebook page:
https://www.facebook.com/macforums1




Results 1 to 5 of 5
  1. #1
    video file conversions.
    lori5060's Avatar
    Member Since
    Jan 14, 2015
    Location
    BC Canada
    Posts
    600
    Your Mac's Specs
    MBP 2017 running Sierra, iPhone 7, iPad 6th generation
    Rep Power
    5
    video file conversions.
    recently I had occasion to convert avi and dmv files to mp4...I used app "total video converter-lite".
    I have used this several times before and have had no problems.

    I have a question about the Codec and bitrate differences between these files.
    the avi file showed in conversion screen:
    Video Codec: cinepak
    Audio Codec: ppm_s16le
    W;600 H:400
    Bitrate: 9035kbps

    once converted to mp4
    Video codec: libx264
    Audio Codec: libbfaac
    W:480 H:320
    Bitrate: 758kbps

    I have no knowledge a bout these things:
    can anyone tell me if I need to be concerned as far as the quality of the newly converted avi to mp4 file.

  2. #2
    video file conversions.
    lclev's Avatar
    Member Since
    Jul 24, 2013
    Location
    Ohio (USA)
    Posts
    4,098
    Your Mac's Specs
    2017 13" MBPro, 2010 MacPro, iPhone Xs Max
    Rep Power
    12
    First - how does the converted video look when you play it? Does it look good for the purposes that you want it for? If so - all is good.

    Now for what is important. You're taking a video shot at 600x400 using an uncompressed avi format and shrinking it to 480x320 using a compressed mp4 format. This results in a Reduced bitrate rate which shrinks the size of the file and reduce the quality of the video if it will be shown on large screens. The smaller size - both of the video and it's file, is actually a better for posting on facebook or sending to someone's phone.

    It really depends on what you plan to use the video for. When I capture videos I am using a mac so it uses an uncompressed file format (.mov). That way I get the best quality I can. Then I edit it and the file that gets posted to YouTube will be in an mp4 format. This greatly reduces the file size from something like 12Gb to 2Gb. All of it will be the same size - width and height. Most people will never see the difference.

    I hope this helps. BTW: my favorite converting program is Handbrake. It is highly customizable.

    Lisa
    Recommend using Onyx to clean your Mac.
    If you have been helped, please add to their reputation by clicking on the icon in the lower left hand corner of the post.

  3. #3
    video file conversions.
    lori5060's Avatar
    Member Since
    Jan 14, 2015
    Location
    BC Canada
    Posts
    600
    Your Mac's Specs
    MBP 2017 running Sierra, iPhone 7, iPad 6th generation
    Rep Power
    5
    thnx.....both .mov and .mp4 look okay and will do for my purposes.

    helpful info on using .mov files first for editing if need be for uploading to internet etc.
    for me, I just wanted to be able to put on thumb drive to show friends....

  4. #4
    video file conversions.
    lori5060's Avatar
    Member Since
    Jan 14, 2015
    Location
    BC Canada
    Posts
    600
    Your Mac's Specs
    MBP 2017 running Sierra, iPhone 7, iPad 6th generation
    Rep Power
    5
    and is the link to download handbrake....handbrake.fr...open source?

  5. #5
    video file conversions.
    lclev's Avatar
    Member Since
    Jul 24, 2013
    Location
    Ohio (USA)
    Posts
    4,098
    Your Mac's Specs
    2017 13" MBPro, 2010 MacPro, iPhone Xs Max
    Rep Power
    12
    Yes handbrake is open sourced. This is the link: HandBrake: Open Source Video Transcoder

    Lisa
    Recommend using Onyx to clean your Mac.
    If you have been helped, please add to their reputation by clicking on the icon in the lower left hand corner of the post.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Final Cut Studio & File Conversions
    By whitakt1 in forum Movies and Video
    Replies: 8
    Last Post: 04-13-2012, 01:54 PM
  2. UK/US Conversions
    By Nighthawk4 in forum iPhone Hardware and Accessories
    Replies: 22
    Last Post: 06-15-2010, 02:40 PM
  3. Replies: 7
    Last Post: 08-19-2009, 11:17 PM
  4. video file conversions
    By andy_mac in forum Movies and Video
    Replies: 2
    Last Post: 08-01-2009, 10:36 PM
  5. And the Conversions Keep Coming
    By Dillinger-63 in forum Switcher Hangout
    Replies: 4
    Last Post: 09-26-2007, 09:35 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •