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visits member for 2 years, 7 months
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I attempt to help users with media related questions; especially those involving .

You can contact me via hungryhungryhobos at gmail.


Mar
20
answered Stop the recording after some period of time
Mar
13
answered How to prevent the recorded video using ffmpeg get corrupt
Mar
10
comment Is there a build of Audacity for Ubuntu that can use a local version of FFMpeg?
@RolandiXor You can always use ffmpeg (the real one, not the fake one) to stream copy the audio: ffmpeg -i input -codec:a copy -map 0:a output or re-encode it ffmpeg -i input output.wav.
Mar
3
suggested rejected edit on When streaming / recording my desktop, how do I also record the audio?
Feb
16
awarded  Citizen Patrol
Feb
13
revised ffmpeg batch convert files
added 71 characters in body
Feb
13
comment ffmpeg batch convert files
@Levan My examples assume that you start in the directory that contains your files that you want to convert. I'll update it to make it more clear.
Feb
13
answered ffmpeg batch convert files
Feb
13
comment ffmpeg batch convert files
What format are the files? Are they all the same format? Please show the complete ffmpeg console output of: ffmpeg -i one_of_the_input_files
Feb
10
awarded  Caucus
Jan
31
comment How to generate a MOV-file from PNG images?
Default frame rate for input is -r 25, so if you choose a different value for output then ffmpeg will drop or duplicate frames to compensate. Sometimes this is desired by the user. If not then use -r as an input option instead.
Jan
20
answered How to play MSS2 encoded video files
Jan
14
answered Deshaking videos using script
Jan
11
comment FFMPEG preset question
Whoever made the script does not know what they are doing. They use -qscale but libx264 ignores that option. Even if it did support -qscale this option is mutually exclusive with -b:b. -b 64KB is used but -b is ambiguous and -b:v or -b:a should be used instead if you want to declare a specific bitrate. 64k is very low for video.
Jan
10
comment Convert “H264 MP4 AVC (part 10) (avc1)”/“MPEG AAC 48kHz” 1080p 23.976000fps videos to 720p, as complete quality as possible
@Rautamiekka Filtering requires re-encoding, and usage of a lossy encoder will introduce quality loss (even if you do not notice it). Using a lossless encoder will, in most cases, result in a huge file.
Jan
9
comment Convert “H264 MP4 AVC (part 10) (avc1)”/“MPEG AAC 48kHz” 1080p 23.976000fps videos to 720p, as complete quality as possible
@Rautamiekka Also, quality is subjective so no "one answer" is perfect.
Jan
9
comment Convert “H264 MP4 AVC (part 10) (avc1)”/“MPEG AAC 48kHz” 1080p 23.976000fps videos to 720p, as complete quality as possible
@Rautamiekka You can choose the answer as "accepted" if you found it acceptable so others know it has been answered.
Jan
9
comment Convert “H264 MP4 AVC (part 10) (avc1)”/“MPEG AAC 48kHz” 1080p 23.976000fps videos to 720p, as complete quality as possible
@Rautamiekka placebo is a waste of time (hence the name). It helps at most ~1%. That is why I did not list it in the answer.
Jan
8
comment Convert “H264 MP4 AVC (part 10) (avc1)”/“MPEG AAC 48kHz” 1080p 23.976000fps videos to 720p, as complete quality as possible
@Rautamiekka As mentioned in the answer you should use the highest crf value that still gives you an acceptable quality. Start with 23 and go up or down. You don't have to encode the whole thing to get an idea of the output (see -t and -ss options).
Jan
7
comment Convert “H264 MP4 AVC (part 10) (avc1)”/“MPEG AAC 48kHz” 1080p 23.976000fps videos to 720p, as complete quality as possible
@Rautamiekka -crf 0 means lossless, and lossless creates huge files.