I like to use the mp4 format because it is supported by HTML5 and I can
embed it in a web page for streaming. mkv isn't as easy.
On Thu, Apr 7, 2022 at 10:51 AM Brian Cluff via PLUG-discuss <
plug-discuss@lists.phxlinux.org> wrote:
> MP4, AVI, MOV, FLV...etc...etc are container formats. Think of them as
> specialty file systems that hold the various "files" that make up of the
> video. Those parts can include the video, the audio, subtitles, thumbnail
> images, meta data... etc...etc.. and often time multiple versions of any
> combination of those.
>
> The various containers can usually hold a number of different types of
> video formats inside them such as h.264, h.264/HEVC, MPEG4, Theora, VP8,
> VP9, AV1. Then there are different audio formats and they can usually use
> just about anything you can think of as an audio codec, such as MP2, WAV
> but often times they use formats that you don't usually see outside of a
> video pairing like AC3, AAC, but there's no reason you couldn't just have
> an stand alone audio file in any format that can be encoded into a video.
>
> So just looking at the suffix of the video file won't tell you anything
> about if your computer can play it back or not. What you really need to
> know is the CODECS that make up various parts of the video are and the
> resolution that the video is stored at. Your computer will have an easier
> time of with some video formats than others. You'll find that your
> computer will usually have an easier time with older video formats that are
> much larger because the hardware decompressing support for that format is
> baked into the GPU or the CPU, so you'll find that putting a newer
> generation video card into even an old computer can make it instantly be
> able to play back the most modern 4K video simply because all the
> decompressing is happening on the GPU and the CPU has little to do with it.
>
> If you have VLC, you can go to "Tools -> Codec Information" and "Tools ->
> Media Information" and it will give you a rough breakdown of what makes up
> your particular video.
> Another really nice tool is mediainfo ( apt install mediainfo ). Just run
> that with your video file name as the argument and it will spit out info
> about all the various parts that make up your video (or audio) file.
>
> Brian Cluff
> PS
> My personal favorite container format is MKV since it seems to be able to
> hold just about anything you throw at it without limitation.
>
>
> On 4/7/22 08:46, Michael via PLUG-discuss wrote:
>
> about converting it to x264..... is this going to be an mp4 file?
>
> On Thu, Apr 7, 2022 at 10:53 AM Bob Elzer via PLUG-discuss <
> plug-discuss@lists.phxlinux.org> wrote:
>
>> ok now try
>>
>> ffmpeg -i input.mp4 -codec:v libtheora -qscale:v 3 -codec:a libvorbis -qscale:a 3 -f ogv output.ogg
>>
>>
>> you might also want to try converting it to x264 just google convert video to ffmpeg x264
>>
>>
>>
>> On Wed, Apr 6, 2022 at 4:22 PM Michael via PLUG-discuss <
>> plug-discuss@lists.phxlinux.org> wrote:
>>
>>> forgot to mention the ones that would not load
>>>
>>> On Wed, Apr 6, 2022 at 7:19 PM Michael <bmike1@gmail.com> wrote:
>>>
>>>> I meant 1080 not 1099.
>>>>
>>>> On Wed, Apr 6, 2022 at 7:16 PM Michael <bmike1@gmail.com> wrote:
>>>>
>>>>> I did. Those ones stuttered. The other ones had 2 hour downloads. The
>>>>> 1099 ogg file stuttered.
>>>>>
>>>>> On Wed, Apr 6, 2022 at 7:10 PM Bob Elzer via PLUG-discuss <
>>>>> plug-discuss@lists.phxlinux.org> wrote:
>>>>>
>>>>>> I would try the mp4 versions too
>>>>>>
>>>>>>
>>>>>> On Wed, Apr 6, 2022, 3:07 PM Michael via PLUG-discuss <
>>>>>> plug-discuss@lists.phxlinux.org> wrote:
>>>>>>
>>>>>>> After further investigation I found 720p_stereo.ogg
>>>>>>> <https://download.blender.org/peach/bigbuckbunny_movies/big_buck_bunny_720p_stereo.ogg>
>>>>>>> and 480p_stereo.ogg
>>>>>>> <https://download.blender.org/peach/bigbuckbunny_movies/big_buck_bunny_720p_stereo.ogg>
>>>>>>> work. So I need to convert it to one of those formats.
>>>>>>>
>>>>>>> I assume you want me to convert it to 720.
>>>>>>> --
>>>>>>> :-)~MIKE~(-:
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>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> :-)~MIKE~(-:
>>>>>
>>>>
>>>>
>>>> --
>>>> :-)~MIKE~(-:
>>>>
>>>
>>>
>>> --
>>> :-)~MIKE~(-:
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>
>
> --
> :-)~MIKE~(-:
>
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