Windows 8 Error

[ghost]

I am reporting here by Zulko's permission.

http://zulko.github.io/blog/2014/01/23/making-animated-gifs-from-video-files-with-python/#comment-1342388341

I use below code:

import os
from moviepy.editor import *
files = sorted( os.listdir("clips/") )
clips = [ VideoFileClip('clips/%s'%f) for f in files]
video = concatenate(clips)
video.to_videofile("demos.mp4",fps=25, codec="mpeg4")

If there is only one mp4 in clips folder, script works ok and demos.mp4 created. But if there are two mp4 videos in clips folder, script throws error. Output is below:

MoviePy: building video file demos.mp4
----------------------------------------
Writing audio in TEMP_MPY_to_videofile_SOUND_demos.ogg

|----------| 0/952   0% [elapsed: 00:00 left: ?, ? iters/sec]
|#---------| 113/952  11% [elapsed: 00:00 left: 00:05, 165.93 iters/sec]
|##--------| 214/952  22% [elapsed: 00:01 left: 00:04, 181.20 iters/sec]
|###-------| 300/952  31% [elapsed: 00:01 left: 00:03, 177.51 iters/sec]
|####------| 420/952  44% [elapsed: 00:02 left: 00:02, 191.78 iters/sec]
|#####-----| 551/952  57% [elapsed: 00:02 left: 00:01, 204.68 iters/sec]
|#######---| 672/952  70% [elapsed: 00:03 left: 00:01, 210.39 iters/sec]
|########--| 797/952  83% [elapsed: 00:03 left: 00:00, 215.41 iters/sec]
|#########-| 920/952  96% [elapsed: 00:04 left: 00:00, 218.74 iters/sec]

Done writing Audio in TEMP_MPY_to_videofile_SOUND_demos.ogg !

Writing video into TEMP_MPY_to_videofile_demos.mp4

|----------| 0/1078   0% [elapsed: 00:00 left: ?, ? iters/sec]
|----------| 38/1078   3% [elapsed: 00:00 left: 00:14, 72.66 iters/sec]
|----------| 83/1078   7% [elapsed: 00:01 left: 00:12, 80.74 iters/sec]
|#---------| 130/1078  12% [elapsed: 00:01 left: 00:11, 84.75 iters/sec]
|#---------| 173/1078  16% [elapsed: 00:02 left: 00:10, 84.97 iters/sec]
|##--------| 216/1078  20% [elapsed: 00:02 left: 00:10, 84.91 iters/sec]
|##--------| 263/1078  24% [elapsed: 00:03 left: 00:09, 86.31 iters/sec]
|##--------| 312/1078  28% [elapsed: 00:03 left: 00:08, 87.96 iters/sec]
|###-------| 351/1078  32% [elapsed: 00:04 left: 00:08, 86.62 iters/sec]
|###-------| 399/1078  37% [elapsed: 00:04 left: 00:07, 87.58 iters/sec]
|####------| 434/1078  40% [elapsed: 00:05 left: 00:07, 85.77 iters/sec]
|####------| 475/1078  44% [elapsed: 00:05 left: 00:07, 85.39 iters/sec]
|####------| 514/1078  47% [elapsed: 00:06 left: 00:06, 84.72 iters/sec]
Traceback (most recent call last):
  File "C:\Users\slome\Desktop\text.py", line 6, in <module>
    video.to_videofile("demos.mp4",fps=25, codec="mpeg4")
  File "C:\Python27\lib\site-packages\moviepy-0.2.1.7.15-py2.7.egg\moviepy\video\VideoClip.py", line 282, in to_videofile
    verbose=verbose)
  File "C:\Python27\lib\site-packages\moviepy-0.2.1.7.15-py2.7.egg\moviepy\video\io\ffmpeg_writer.py", line 136, in ffmpeg_write_video
    frame = clip.get_frame(1.0*i/fps)
  File "C:\Python27\lib\site-packages\moviepy-0.2.1.7.15-py2.7.egg\moviepy\video\compositing\concatenate.py", line 64, in gf
    return clipslist[i].get_frame(t - tt[i])
  File "C:\Python27\lib\site-packages\moviepy-0.2.1.7.15-py2.7.egg\moviepy\video\io\VideoFileClip.py", line 66, in <lambda>
    self.get_frame = lambda t: self.reader.get_frame(t)
  File "C:\Python27\lib\site-packages\moviepy-0.2.1.7.15-py2.7.egg\moviepy\video\io\ffmpeg_reader.py", line 156, in get_frame
    result = self.read_frame()
  File "C:\Python27\lib\site-packages\moviepy-0.2.1.7.15-py2.7.egg\moviepy\video\io\ffmpeg_reader.py", line 118, in read_frame
    assert len(s) == nbytes
AssertionError

Could you look into this please?

[Zulko]

You don't need authorization to raise an issue :)

Thanks for the feedback, this is a real bug. Looks like my last changes in the program messed things a little. It looks like an easy fix, I'll see that tonight (in circa 10 hours).

[ghost]

Thank you so much Zulko for looking into this. You have a great coding skills. I am sure you will fix it easily.

[Zulko]

I think I have solved the problem (at least it works fine on my computer). Try reinstalling the module and tell me if it works.

[ghost]

Hi Zulko,

Thank you very much for your time on this.

I am so sorry to say, it is not working. I used same script above and it throwed below output:

MoviePy: building video file demos.mp4
----------------------------------------
Writing audio in demosTEMP_MPY_to_videofile_SOUNDogg

|----------| 0/476   0% [elapsed: 00:00 left: ?, ? iters/sec]
Traceback (most recent call last):
  File "C:\Users\slome\Desktop\text.py", line 6, in <module>
    video.to_videofile("demos.mp4",fps=25, codec="mpeg4")
  File "C:\Python27\lib\site-packages\moviepy-0.2.1.7.16-py2.7.egg\moviepy\video\VideoClip.py", line 275, in to_videofile
    verbose)
  File "<string>", line 2, in to_audiofile
  File "C:\Python27\lib\site-packages\moviepy-0.2.1.7.16-py2.7.egg\moviepy\decorators.py", line 60, in requires_duration
    return f(clip, *a, **k)
  File "C:\Python27\lib\site-packages\moviepy-0.2.1.7.16-py2.7.egg\moviepy\audio\AudioClip.py", line 104, in to_audiofile
    codec, bitrate, verbose)
  File "<string>", line 2, in ffmpeg_audiowrite
  File "C:\Python27\lib\site-packages\moviepy-0.2.1.7.16-py2.7.egg\moviepy\decorators.py", line 60, in requires_duration
    return f(clip, *a, **k)
  File "C:\Python27\lib\site-packages\moviepy-0.2.1.7.16-py2.7.egg\moviepy\audio\io\ffmpeg_audiowriter.py", line 101, in ffmpeg_audiowrite
    writer.write_frames(sndarray)
  File "C:\Python27\lib\site-packages\moviepy-0.2.1.7.16-py2.7.egg\moviepy\audio\io\ffmpeg_audiowriter.py", line 62, in write_frames
    self.proc.stdin.write(frames_array.tostring())
IOError: [Errno 32] Broken pipe

Just as a note, previous version were working fine for one video but this version does not work one video file, too. I hope it helps track the bug.

Cheers

[Zulko]

Ah, I made a typo just before pushing the code, sorry for that. Could you please try it again (reinstall and retry the same code). There are good chances that it will work now.

[ghost]

no worries,

it stucks at some percentage without throwing any error

MoviePy: building video file demos.mp4
----------------------------------------
Writing audio in demosTEMP_MPY_to_videofile_SOUND.ogg

|----------| 0/5001   0% [elapsed: 00:00 left: ?, ? iters/sec]
|----------| 113/5001   2% [elapsed: 00:00 left: 00:26, 185.55 iters/sec]
|----------| 228/5001   4% [elapsed: 00:01 left: 00:23, 202.85 iters/sec]
|----------| 323/5001   6% [elapsed: 00:01 left: 00:23, 197.19 iters/sec]
|----------| 448/5001   8% [elapsed: 00:02 left: 00:21, 208.08 iters/sec]
|#---------| 549/5001  10% [elapsed: 00:02 left: 00:21, 206.94 iters/sec]
|#---------| 669/5001  13% [elapsed: 00:03 left: 00:20, 212.18 iters/sec]
|#---------| 779/5001  15% [elapsed: 00:03 left: 00:19, 212.44 iters/sec]
|#---------| 898/5001  17% [elapsed: 00:04 left: 00:19, 214.78 iters/sec]
|##--------| 1011/5001  20% [elapsed: 00:04 left: 00:18, 215.29 iters/sec]
|##--------| 1129/5001  22% [elapsed: 00:05 left: 00:17, 216.66 iters/sec]
|##--------| 1269/5001  25% [elapsed: 00:05 left: 00:16, 221.62 iters/sec]
|##--------| 1386/5001  27% [elapsed: 00:06 left: 00:16, 222.12 iters/sec]
|###-------| 1508/5001  30% [elapsed: 00:06 left: 00:15, 223.24 iters/sec]
|###-------| 1661/5001  33% [elapsed: 00:07 left: 00:14, 228.47 iters/sec]
|###-------| 1768/5001  35% [elapsed: 00:07 left: 00:14, 227.10 iters/sec]
|###-------| 1900/5001  37% [elapsed: 00:08 left: 00:13, 228.50 iters/sec]
|####------| 2020/5001  40% [elapsed: 00:08 left: 00:13, 228.77 iters/sec]
|####------| 2135/5001  42% [elapsed: 00:09 left: 00:12, 228.46 iters/sec]
|####------| 2264/5001  45% [elapsed: 00:09 left: 00:11, 229.61 iters/sec]
|####------| 2403/5001  48% [elapsed: 00:10 left: 00:11, 231.64 iters/sec]
|#####-----| 2546/5001  50% [elapsed: 00:10 left: 00:10, 234.14 iters/sec]
|#####-----| 2631/5001  52% [elapsed: 00:11 left: 00:10, 231.03 iters/sec]
|#####-----| 2751/5001  55% [elapsed: 00:11 left: 00:09, 231.41 iters/sec]
|#####-----| 2877/5001  57% [elapsed: 00:12 left: 00:09, 231.94 iters/sec]
|######----| 3005/5001  60% [elapsed: 00:12 left: 00:08, 232.64 iters/sec]
|######----| 3141/5001  62% [elapsed: 00:13 left: 00:07, 233.84 iters/sec]
|######----| 3263/5001  65% [elapsed: 00:13 left: 00:07, 233.96 iters/sec]
|######----| 3363/5001  67% [elapsed: 00:14 left: 00:07, 232.56 iters/sec]
|######----| 3464/5001  69% [elapsed: 00:14 left: 00:06, 231.54 iters/sec]
|#######---| 3578/5001  71% [elapsed: 00:15 left: 00:06, 231.20 iters/sec]
|#######---| 3704/5001  74% [elapsed: 00:15 left: 00:05, 231.64 iters/sec]
|#######---| 3831/5001  76% [elapsed: 00:16 left: 00:05, 232.11 iters/sec]
|#######---| 3973/5001  79% [elapsed: 00:17 left: 00:04, 233.43 iters/sec]
|########--| 4081/5001  81% [elapsed: 00:17 left: 00:03, 232.73 iters/sec]
|########--| 4209/5001  84% [elapsed: 00:18 left: 00:03, 233.20 iters/sec]
|########--| 4300/5001  85% [elapsed: 00:18 left: 00:03, 231.63 iters/sec]
|########--| 4435/5001  88% [elapsed: 00:19 left: 00:02, 232.45 iters/sec]

can you upload your video files so that i can try and make sure bug is not about my videos and codecs?

[Zulko]

Some people had the same problem with the video generation and it seems that we fixed it. Apparently your problem is now with the audio generation, so I just made similar changes to the audio section of the code, and now there are good chances that it will work. Could you try reinstalling moviepy and rerunning the script ?

Thanks for your feedbacks, it's really appreciated.

[ghost]

hi Zulko, works perfect now. thank you for your time on this.

[Zulko]

Very cool. The program is still young but it is getting better, most bugs come (came ?) from reading and writing video/audio but they are fixed after one another. Have fun.

Cheers,