NON(!)-EXE FFPlay4Laz

[metis]

@aradeonas

I checked it and I cant feel any changes

Differences in Sound, like SDL/Portaudio, ASIO/not ASIO, fine Clicks, etc. may be only audible with
according Equipment - with PC-Speakers or low Quality AudioAmps for sure not.
For not spending too much Money for a HiEnd-PA-Amp+LoudSpeakers (and not killing my Neighbours), I use: 
SoundCard: SoundBlaster Audigy 24bit -> Headphone-Amp -> AKG-Headphone (-> good Ears).
-> THEN You really get Differences in Sound ! It's like looking through a dirty/clean Window.

it still has suddenly close problem

= Known Issue - I'm on it. The current File ran max. 2,5h on my PC with MPG.
My Impression is, that it plays Movies longer than MusicClips (don't ask me why).    
The Seek as well seems to work better with Movies than with MusicClips.
I got Files, where the Seek works perfectly, whilst it fails totally with others.

Thanks for Your Mail. I really appreciate, that You try to help an Internet-Dinosaur, like me.

[aradeonas]

= Known Issue - I'm on it. The current File ran max. 2,5h on my PC with MPG.
My Impression is, that it plays Movies longer than MusicClips (don't ask me why).    
The Seek as well seems to work better with Movies than with MusicClips.
I got Files, where the Seek works perfectly, whilst it fails totally with others.

It just randomly crash in small or large files and Im sure you will solve it soon.

Thanks for Your Mail. I really appreciate, that You try to help an Internet-Dinosaur, like me.

My pleasure to help 

[metis]

@aradeonas

Here is the next Release: see FFPlay4Laz_07.12.15 - 12.16, Changes:
- Some CodeCleaning and -Restructuring done
   -> Now, it should run stable (went all through a 13GB MPG-File, 3h45Min., until EOF).
- VideoImage pauses a bit faster.
- EOF-Handling started.
> Known Bugs: - AV-Sync gets lost, after Seeking to EOF.
                         - Seek is still weak: with some Files it works, with others it's erroneous.
                         - Slight Clicks when Seeking, and when UnPausing.

[aradeonas]

Yes you are right it now play very good and easy.Well done.
If you add a key down seeking it can be very good so when you push key down and keep it in that way it forward fastly .

Looking forward for the next version

[metis]

@aradeonas

when you push key down and keep it

Putting a 'SDL_EnableKeyRepeat()' would be the easiest Way to achieve this, but
without additional Code, ALL KeyDowns (e.g. <Space> to Pause/Unpause) are affected, as well.

At the Moment, I try to work out a GENERAL FFmpeg-Core, or -Engine for FPC;
Stuff like 'KeyRepeat' is better done outside of it.

In the Meantime, I've ported the updated C-File from DrangerTutorial (= 'tutorial07.c') to FPC.
It opens even faster, runs more stable, and first of all: it works with much more recent FFmpeg-DDLs.
I still got some minor Problems to be solved, but X-Mas is coming, so be patient with the first Release.


Speaking of X-Mas: Here is my X-Mas-Present for aradeonas & mercury:

In the Attachement You'll find my Port of the Dranger-C-File 'tutorial08.c' (= BEFORE being "up to date as of February 2015").
-> Any Suggestion, Correction, Improvement, BugNotice, etc. on this Code is appreciated.
But, keep in Mind:
it's NOT a complete AV-Player;
it's only the MINIMUM of Code You need to open, sync and output the Video-, and AudioStream (and to do a Seek), and
it's kept "as near as possible" to the original C-File, so that everyone can easily compare the two Languages.

-> Everyone may feel free to build up his own FFmpeg-MediaPlayer out of it.


Merry X-Mas to all. 

[aradeonas]

@metis thank you and very good.
Have a good XMas.

[metis]

@aradeonas

see my Dropbox -> 'FFPlay4Laz\FFPlay4Laz_01_29.12.15 - 15.42'
to get the next Release of my FFPlay4Laz-ConsoleVersion #1
-> No big Differences; only some minor Changes done.

AND:

see my Dropbox -> 'FFPlay4Laz\FFPlay4Laz_02_29.12.15 - 15.44'
to get the FIRST Release of my FFPlay4Laz-ConsoleVersion #2 with UPDATED FFmpeg-DLLs,

Note: ALL Files and DLLs have changed (except of the the PortAudio-DLL),
      therefore You'll only find a ZIP-File in the Directory to get started with the new Version.

ConsoleVersion #2 of FFPlay4Laz is based(!) on the tutorial07.c-File from Dranger Tutorial
(http://dranger.com/ffmpeg/). It's using up to Date FFmpeg-Functions, like
'avformat_open_input()', 'avcodec_decode_video2()' and 'avcodec_decode_audio4()';
the FFmpeg-Wrapper are taken from 'FFVLC' (http://www.delphiffmpeg.com/headers/).

@Brian_ch
Finally I took the FFmpeg-Wrapper from 'FFVLC' to get started with updated FFmpegs, because
one FFmpeg-Funktion, that is essential for this Kind of Player, is missing in the newer
'USDX'-Wrapper (or, I didn't find it): 'av_gettime()'.

ConsoleVersion #2 should do quite the same like the first one, only with much more Codecs.

One tiny, but grave Problem left:
AudioDecoding does not always work well yet; in this Case, You'll get a nice Video with some noisy Sound.

-> ToDo in 2016. 

[aradeonas]

Hi metis and happy new year.
I checked the new version and : Oh a lot of noise! noisssse
But no crash or problem in video just as before.
I hope in this year we make a good Player.

[metis]

@aradeonas

I hope in this year we make a good Player.

First Step done: FFmpeg-AudioResampler added -> 'avcodec_decode_audio4()' works ! 
-> Check my DropBox: FFPlay4Laz_02_21.01.16 - 14.22

Have a Look at the current State of the UltraStar-Project
https://github.com/skerit/ultrastardx/, and go to:
'src\media\UAudioDecoder_FFmpeg.pas' -> 'TFFmpegDecodeStream.DecodeFrame()'
  -> "{$IF LIBAVCODEC_VERSION >= 53025000}" ...
You'll see, that You'll see nothing: No 'avcodec_decode_audio4()' implemented yet. 

Notes:
- 'FFPlay4Laz_Console_01' is depreciated; use 'FFPlay4Laz_Console_02' instead.
- Pausing for a longer Time still causes AV-Sync-Problems.
- The Seek is faster and more stable with PortAudio (= 'FFPlay4Laz_Console_02_Pa.exe').
- All README-Files revised, and moved to 'FFPlay4Laz - DOCS'.

[aradeonas]

@metis!
Excellent.
 Sound is very good and I got no problem in my tests. Still problem in forwading and moving in video but changes you amde for audio make it very good.

Waiting for next one

[metis]

@aradeonas

Still problem in forwading and moving in video

Please, describe this "problem" more detailed.
In my Tests, the Version with SDL-AudioOutput crashes quite often on the FIRST Seek after Opening; once it got over this, it works. The Version with Pa-AudioOutput opens&seeks fine.
-> I'm on it, to get this fixed, but finally I'm more interested in Portaudio.

changes you amde for audio make it very good

These Changes have to be done, when using 'avcodec_decode_audio4()'.
(BTW: Decoding AudioFrames was much more simple with 'avcodec_decode_audio2()'.)

The AudioResampler still needs some more WorkOut, but obviously it already runs quite well.
For those, who are interested in, how it's done, have a Look here:
https://github.com/FFmpeg/FFmpeg/blob/release/0.10/ffplay.c
-> go to "static int audio_decode_frame(VideoState *is, double *pts_ptr)"
    -> What's still to be worked out, is: "swr_set_compensation(".
This is (mainly), what I translated to FPC, to make 'avcodec_decode_audio4()' work.

Waiting for next one

Coming soon. 

[aradeonas]

Please, describe this "problem" more detailed.

It doesnt support fast forward so I can keep key down and it goes fast, it actually write logs and reach to the end of the file and keep saying its the end of the file

[Frank]

@metis
  Hi ! It appears we have been working on similar projects. Currently I have been working at implementing MP4/AAC for uos for my own Delphi converted to Lazarus projects. I also have projects (Delphi Win32) that use ffmpeg.exe that I want to convert to Lazarus/Fpc3.0. If it would be possible to assist/build on your efforts, I would be glad to assist. My goal is code for both Win/Linux. It makes more sense to work on unified result than several going in different directions...
  Let me know if I can help...

[metis]

Sorry for answering so late, but last Week my really hard working HDD deceased (-> R.I.P.).
Before going on with this Project, I have to recover, restore and reinstall my entire System.
One and only Benefit: I took the Opportunity to update to Lazarus v1.4.4.

Anyway, get the last Version before my Disk failed from my DropBox: FFPlay4Laz_02_15.02.16 - 13.51:
> Seek revised
  -> Now, the Seek is stable with SDL-Audio, too; Audio is slightly muted, when Seeking.

@aradeonas

It doesnt support fast forward so I can keep key down and it goes fast

I see, You really insist on the KeyRepeat-Feature. Though it is not projected at the Moment, I'll implement it for You - or maybe, Frank does...


@Frank

I have been working at implementing MP4/AAC for uos for my own Delphi converted to Lazarus

Initially, I intended to do the same, but then I decided to do something different.

I also have projects (Delphi Win32) that use ffmpeg.exe

For PascalCode to Transcode & Play via FFmpeg-EXEs, see e.g. 'WinFF':
http://www.winff.org

If it would be possible to assist/build on your efforts + Let me know if I can help...

Any Assistance is appreciated -> Take the Code, I published in the Attachment of my Thread, Dec. 21, 2015.
Though the current 'FFPlay4Laz' suffered some "slight Modifications" by me, the basic Structure, specially the Way, how the AV-Synchronization is done, did not change - Here some Ideas for You:
- Add KeyRepeat
- Add Pause/Unpause
  I already did (or better started) that, but up to now, it's not really satisfying, because:
  when Unpausing after a longer Period, the Audio-Sync gets lost - may be, You'll find a better Solution.
- Write a FFmpeg-Wrapper for 'FFPlay4Laz', like 'OvoPlayer' did for Audio only, see:
  https://github.com/varianus/ovoplayer/tree/master/src/import-engines, and
  open 'src\import-engines\ffmpeg.pas'.

And last, but not least:
'FFPlay4Laz' works quite fine, but in Order to turn it to a real "FFPlay for Lazarus",
the SDL-Threads, -Timers, and -Events could/should be replaced by Lazarus-Components.

Looking forward to Your Reply.

[Frank]

@metis  Thank you for your reply.

I used "DrangerTutorial08.c2FPC.lpr.zip" and with header files from "ultrastardx-1.1-src.tar.gz" the program compiled.
It, however, required the use of your version 1 dll's (avcodec-52.dll, etc).
I took a look at your source & found it interesting (I always enjoy studying/learning from others).
I would be glad to assist (as soon as I'm finished with Uos).

  1/ I agree, that Dynamic Lib Header files are needed,
  2/ then "FFPlay4Laz" becoming a thread(/file) to be used in program with,
  3/ the ability to pass THandle of window to thread, & video being displayed on that window.
  4/ "Pause/UnPause", I''ll attempt to make it just part of my learning curve 

  If you are in agreement, I could start the above modifications, albeit after my work with Uos.