CalledProcessError - DAIN Google Colab

[heraldob]

Hello, how are you, I get this error, I don't know how to solve it, what am I doing wrong?

Create output video

%cd {FRAME_OUTPUT_DIR}
%shell ffmpeg -y -r {60} -f image2 -pattern_type glob -i '*.png' '/content/gdrive/My Drive/{OUTPUT_FILE_PATH}'

/content/DAIN/output_frames
ffmpeg version 3.4.11-0ubuntu0.1 Copyright (c) 2000-2022 the FFmpeg developers
built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
configuration: --prefix=/usr --extra-version=0ubuntu0.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
libavutil 55. 78.100 / 55. 78.100
libavcodec 57.107.100 / 57.107.100
libavformat 57. 83.100 / 57. 83.100
libavdevice 57. 10.100 / 57. 10.100
libavfilter 6.107.100 / 6.107.100
libavresample 3. 7. 0 / 3. 7. 0
libswscale 4. 8.100 / 4. 8.100
libswresample 2. 9.100 / 2. 9.100
libpostproc 54. 7.100 / 54. 7.100
[image2 @ 0x55c2d93c8000] Could not open file : .png
[image2 @ 0x55c2d93c8000] Could not find codec parameters for stream 0 (Video: png, none(pc)): unspecified size
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, image2, from '.png':
Duration: 00:00:00.02, start: 0.000000, bitrate: N/A
Stream #0:0: Video: png, none(pc), 60 tbr, 60 tbn, 60 tbc
Output #0, mp4, to '/content/gdrive/My Drive/DAIN/output.mp4':
Output file #0 does not contain any stream

CalledProcessError Traceback (most recent call last)
in
1 # Create output video
2 get_ipython().run_line_magic('cd', '{FRAME_OUTPUT_DIR}')
----> 3 get_ipython().run_line_magic('shell', "ffmpeg -y -r {60} -f image2 -pattern_type glob -i '*.png' '/content/gdrive/My Drive/{OUTPUT_FILE_PATH}'")

2 frames
/usr/local/lib/python3.7/dist-packages/google/colab/_system_commands.py in check_returncode(self)
133 if self.returncode:
134 raise subprocess.CalledProcessError(
--> 135 returncode=self.returncode, cmd=self.args, output=self.output)
136
137 def repr_pretty(self, p, cycle): # pylint:disable=unused-argument

CalledProcessError: Command 'ffmpeg -y -r 60 -f image2 -pattern_type glob -i '*.png' '/content/gdrive/My Drive/DAIN/output.mp4'' returned non-zero exit status 1.

[AlphaGit]

Hi! I've seen this happening when it cannot find the frame files (png files) to generate the final video.

You can try interpolation again, making sure you're using the latest notebook (at this location), or:

• download the png files and execute the ˋffmpegˋ command yourself
• download the png files and use another software to recreate the final video

[heraldob]

Thank you very much for your answer, I was able to understand the problem. I solved it by moving the "outup_frames" folder to /content/drive/MyDrive/output_frames. I then ran the command:

%cd /content/drive/MyDrive/output_frames

next:

%shell ffmpeg -y -r {TARGET_FPS} -f image2 -pattern_type glob -i '*.png' '/content/drive/MyDrive/output_frames/output.mp4'

and I was able to get the video.