[BUG] Compressed video is larger than original

[kevin970712]

screen-20260123-121541.mp4

[JoshAtticus]

Hi @kevin970712 ! May I ask if the video is from a social media platform or a screen recording? Furthermore, can you please fill out these questions for me, the ones marked with an asterisk (*) are required but to try answer all of them

• Device Model* (e.g. Galaxy S10):
• Android Version* (e.g. 12):
• Compressor Version* (e.g. 1.1.0):
• Where did you get Compressor from?* (GitHub Releases, IzzyOnDroid/F-Droid, Google Play Store):
• Device Chipset (e.g. Exynos 9820):
• Device Model Number (e.g. SM-G973F):

And if possible, could you please get a logcat (filter to package:compress.joshattic.us) while compressing the video so I can see what encoder Media3 is using?

[kevin970712]

@JoshAtticus
This video is downloaded from YouTube.
Device Model* (e.g. Galaxy S10):Galaxy A52s 5G
Android Version* (e.g. 12):Android 14(LineageOS 21)
Compressor Version* (e.g. 1.1.0):1.1.1
Where did you get Compressor from?* (GitHub Releases, IzzyOnDroid/F-Droid, Google Play Store):Droidify(IzzyOnDroid source)
Device Chipset (e.g. Exynos 9820):Snapdragon 778G
Device Model Number (e.g. SM-G973F):SM-A528B

[JoshAtticus]

Ah, Qualcomm's hardware encoders on clean AOSP builds are very literal, they will hit the target bitrate requested, even if it's higher than the source.

Since your source video likely already had a very low bitrate (~1.5-2 Mbps), my 'High Quality' preset (which uses a higher fixed target) caused the encoder to 'inflate' the file. Because of this, it is very hard to further compress the video at a low bitrate and original resolution, I recommend trying to lower the resolution from 1080p to 720p in Advanced Settings first, and set the target size slider to the lowest possible value. Could you let me know if that worked and if so, I'll close the issue as completed.

I am working on a 'Source-Aware' update for v1.1.2. This will ensure that the target bitrate never exceeds the original file's bitrate, preventing 'upsized' videos.

[kevin970712]

@JoshAtticus Yes, your inference is correct; the video's bitrate is only 1.4 Mbps. Furthermore, this is the original file of the video.
https://limewire.com/d/an5AR#qd2M2jaRlj

[kevin970712]

I tried setting the resolution to 720p and adjusting the slider to the lowest setting; it was indeed smaller than the original file, but the compression effect was very limited.

[JoshAtticus]

I see, since the bitrate was indeed very low, the video really cannot be compressed any further unless you are either

A. Physically getting rid of pixels by compressing to a lower resolution
or B. Reduce the bitrate even lower, which will result in a very low quality video.

Since you've already reached the smallest possible size for the bitrate, there is nothing more that Compressor can do